Sharp VL-C8000S Technical information

i
Note
Before using this information and the product it supports, be sure to read the general information under
Appendix E, “Product Warranties and Notices” on page 255.
First Edition (March 1995)
The following paragraph does not apply to the United Kingdom or any country where such provisions are
inconsistent with local law:
INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION “AS IS” WITHOUT ANY
WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE LIMITED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow
disclaimer or express or implied warranties in certain transactions, therefore, this statement may not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the
information herein; these changes will be incorporated in new editions of the publication. IBM may make
improvements or changes in the products and the programs described in this publication at any time.
It is possible that this publication may contain references to, or information about, IBM products (machines and
programs), programming, or services that are not announced in your country. Such references or information must not
be construed to mean that IBM intends to announce such IBM products, programming, or services in your country.
Requests for technical information about IBM products should be made to your IBM authorized dealer or your IBM
marketing representative.
IBM may have patents or pending patent applications covering subject matter in this document. The furnishing of this
document does not give you any license to these patents. You can send license inquiries, in writing, to the IBM
Director of Licensing, IBM Corporation, 500 Columbus Avenue, Thornwood, NY 10594, U.S.A.
Copyright International Business Machines Corporation 1995. All rights reserved. Note to US Government
Users – Documentation related to restricted rights – Use, duplication or disclosure is subject to restrictions set forth in
GSA ADP Schedule Contract with IBM Corp.
Thank You for Selecting
an IBM ThinkPad 755CX Computer
The IBM ThinkPad 755CX
is one of the most advanced and versatile notebook computers.
With such innovative features as audio, telephony,
infrared ports, a long-life battery,
and a brilliant color display,
the ThinkPad 755CX will satisfy
all of your mobile computing needs.
iii
Distinctive System Features
Mwave DSP Audio, Telephony, and
Data/Fax Modem Features
11 Long-Life Battery Pack
2 Infrared Communication
PCMCIA Support
Support
1
10
TrackPoint III
9
3
Easy-Setup
8
ThinkPad Features
Program
Thinkpad Features
Config
Restart
7
TFT Color LCD Screen
6
iv
Fn Key Function
IBM ThinkPad 755CX User's Guide
4
5
Power Management
Security Features
1
Mwave DSP audio, telephony, and fax/modem features
The ThinkPad Mwave digital signal processor (DSP) provides high-quality audio, telephony and modem/fax
functions. With a built-in speaker and a microphone, they complete your multimedia computing solution.
(See page 75.)
Note: In some countries, the Mwave telephony functions are available only after the DAA/Telephony Kit
option is installed.
2
Infrared communication support
Two infrared ports supplied with your computer make wireless serial communication possible.
(See page 72.)
3
ThinkPad Features program
The ThinkPad Features program allows you to set various parameters either with a graphical user interface
or with commands. (See page 35.)
4
Power management
Power management sets the computer to different modes to save battery power when you are not using the
computer. It also provides a resume function, which quickly returns you to your previous operation. (See
page 50.)
5
Security features
The computer provides security passwords for the computer and hard disk drive. Lock security and a
personalization utility are also provided. (See Chapter 5.)
6
Fn key function
The combination of this Fn key and a function key controls display modes, battery power-saving modes, or
other functions. (See page 48.)
7
TFT color LCD screen
A brilliant TFT color LCD screen supports 65 536 colors with the following display resolution for each model:
The 755CX SVGA model supports SVGA (800-by-600 resolution) video mode besides VGA (640-by-480)
mode.
The 755CX VGA model supports VGA (640-by-480) mode.
8
Easy-Setup
The built-in system programs in Easy-Setup makes the basic setup of your computer easy.
(See page 42.)
9
TrackPoint III
With TrackPoint III, pointing, selecting, and dragging all become part of a single process without your lifting
your hands from the keyboard. (See page 23.)
1
11
PCMCIA** support
The computer provides two Personal Computer Memory Card Association (PCMCIA) slots. PCMCIA
software is also provided, so that you can use PC Card** more easily and conveniently. (See page 61.)
Long-life battery pack
The operating time of the computer is extended with the long-life battery pack.
(See page 20.)
v
vi
IBM ThinkPad 755CX User's Guide
About This Book
This User's Guide contains information that will help you operate the
IBM ThinkPad 755CX computer (hereafter called 755CX or
computer).
Chapter 1, “Getting Started,” describes the Product Map and
explains how to set up your computer.
Chapter 2, “Getting Familiar with Your Computer,” acquaints you
with additional features of your computer.
Chapter 3, “Operating Your Computer,” explains how to use the
various features of your computer.
Chapter 4, “Using Battery Power,” provides battery information
and describes how to operate your computer with the battery pack.
Chapter 5, “Protecting Your Computer,” provides information on
how you can secure your computer and internal devices against
unauthorized use.
Chapter 6, “Installing and Removing Options,” describes how to
install or remove IBM options.
Chapter 7, “Installing Software,” explains how to install operating
systems, device drivers, and other support software.
Chapter 8, “Solving Computer Problems,” describes what to do if
you detect a problem.
Appendix A, “Avoiding Hardware Conflicts,” describes how you
can avoid problems when you add or remove options.
Appendix B, “Advanced Information for PC Cards,” provides
advanced technical information when using PC Cards.
Appendix C, “Additional Information for Mwave DSP Features,”
provides technical information about the ThinkPad Mwave DSP
functions, audio, and telephony.
Appendix D, “Features and Specifications,” describes the
features and specifications associated with your computer.
Appendix E, “Product Warranties and Notices,” contains the
warranty statements of your computer and notices for this book.
“Glossary,” includes terms appearing in this User's Guide and their
definitions.
Copyright IBM Corp. 1995
vii
Information Notices
This User's Guide contains notices that relate to specific information or text.
Caution:
Note:
Provides important hints,
tips, guidance, or advice.
Usild Lke Sejk
Providing Power
Note:
Tlke lkj rlij r foije ljc oijf, lekjr soif eijfs
Rlkefldsksokdfskj
Nkfjelkaselkdsfi,
kjfadslkejfsa.
lkjf aliej lksf. Hlkj lkjer a sf iejr lksfj
Warning:
Tjhasfladkeaoiufsa leaf. Easd je k:
Oilek alk sadkjsf ke.
Dksjfelksd, ksjf ek
kjsfylkefsdfoisefl.
lksf leifjas elk, oir lkej fasifj.
Indicates situations that
are potentially hazardous
to you. It appears in text
before the instruction or
situation that could be
hazardous.
- Lkje salkiaoue.
- Yoeksfalkje slasdjea.
Dang er:
Lk lksda eilsad d asfij elkjs afdy dfsa. Tka
lksadf diyl ekj assfa df oiuasf.
Olkesaduyelksfaksayoisdalkjsfoiudlfek.
Warning:
Indicates possible damage
to programs, devices,
system, or data. It appears
before the related instruction
or situation in which possible
damage could occur.
Danger:
sakjeoi alkfsdoiueksafdlkjefasdoiy:
1Tklksfoialkthkes elksdfkoiasfue.
Chapter2. YoekfBlksdLekjf
109
Indicates situations that
are potentially lethal or
extremely hazardous to you.
It is indicated by the
symbol
and appears
in text before the instruction
or situation that could be
dangerous.
Treatment of Icons
This User's Guide contains the following icons (symbols) representing procedures or information unique
to the operating system installed in your computer, or pointing you to other information.
OS/2
WIN
viii
Information for IBM Operating
System/2 (OS/2) users.
Information for Microsoft**
Windows** users.
IBM ThinkPad 755CX User's Guide
Information for DOS users.
DOS
Where to go for other information.
Electrical Safety Notice
DANGER:
Electrical current from power, telephone, and communication
cable is hazardous. To avoid shock hazard, connect and
disconnect cables as shown below when installing, moving, or
opening the covers of this product or attached the devices.
The power cord must be used with a properly grounded outlet.
To Connect
To Disconnect
Turn everything OFF.
Turn everything OFF.
First, attach all cables to devices.
First, remove the power cord from
the outlet.
Remove signal cables from
receptacles.
Attach the signal cables to
receptacles.
Remove all cables from devices.
Attach the power cord to an outlet.
Turn the device ON.
Note: In the U.K., by law, the
telephone line cable must be
connected after the power cord.
Note: In the U.K., by law, the
power cord must be disconnected
after the telephone line cable.
About This Book
ix
CAUTION:
Do not disassemble, incinerate, or short-circuit the rechargeable
battery pack. Do not put it in refuse that is disposed of in
landfills. Dispose of it as required by local ordinances or
regulations.
CAUTION:
The lithium battery (IBM P/N 84G6426, UL** recognized
component—File No. MH12210), attached by the speaker under
the keyboard can be replaced only by your IBM authorized
reseller or IBM marketing representative. It contains lithium and
can explode if not properly used, handled, or disposed of. Do
not: (1) throw or immerse into water, (2) heat to more than
100°C (212°F), or (3) repair or disassemble. Dispose of it as
required by local ordinances or regulations.
CAUTION:
The nickel metal hydride rechargeable battery attached under
the diskette drive, can be replaced only by your IBM authorized
reseller or IBM marketing representative. Do not disassemble,
incinerate, or short-circuit it. The battery can cause burns or
release toxic chemicals. Do not put it in refuse that is disposed
of in landfills. Dispose of it as required by local ordinances and
regulations.
CAUTION:
The fluorescent lamp in the liquid crystal display (LCD) contains
mercury. Do not put it in refuse that is disposed of in landfills.
Dispose of it as required by local ordinances or regulations.
The LCD is made of glass, and rough handling or dropping the
computer can cause the LCD to break. If the LCD breaks and
the internal fluid gets into your eyes or on your hands,
immediately wash the affected areas with water for at least 15
minutes; then get medical care if any symptoms are present
after washing.
x
IBM ThinkPad 755CX User's Guide
Contents
About This Book . .
Information Notices . .
Treatment of Icons . .
Electrical Safety Notice
. . . .
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Chapter 2. Getting Familiar with Your Computer . . .
Locations and Functions . . . . . . . . . . . . . . . . . . . .
System-Status Indicators . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
Providing Power
AC Adapter . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . .
Car Battery Adapter . . . . . . . . . . . . . . . . . . . . .
Operating with the TrackPoint III . . . . . . . . . . . . . . .
Changing the Cap . . . . . . . . . . . . . . . . . . . . . .
Operating the Numeric Keypad . . . . . . . . . . . . . . . .
Using the Display . . . . . . . . . . . . . . . . . . . . . . . .
Using a DOS Application with Your 755CX SVGA Model
Using the Online Book . . . . . . . . . . . . . . . . . . . . .
Starting for OS/2 or Windows . . . . . . . . . . . . . . .
Starting for DOS . . . . . . . . . . . . . . . . . . . . . . .
Keeping the Computer from Being Damaged . . . . . . . .
Carrying the Computer . . . . . . . . . . . . . . . . . . . . .
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11
12
16
18
18
20
22
23
25
26
27
28
29
29
29
30
31
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33
34
35
36
41
42
42
47
48
50
52
53
57
61
61
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61
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Chapter 3. Operating Your Computer . . . . . . . . . . .
What Happens When Power Is Turned On? . . . . . . . . .
Using the ThinkPad Features Program . . . . . . . . . . . .
Using the Program for OS/2 and Windows
. . . . . . . .
Using the PS2 Program
. . . . . . . . . . . . . . . . . . .
Using Easy-Setup
. . . . . . . . . . . . . . . . . . . . . . . .
Starting Easy-Setup . . . . . . . . . . . . . . . . . . . . . .
Using the Selectable Drive-Startup Sequence . . . . . . .
Using the Fn Key Function . . . . . . . . . . . . . . . . . . .
Using Power Management . . . . . . . . . . . . . . . . . . .
Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . .
Suspend Mode
. . . . . . . . . . . . . . . . . . . . . . . .
Hibernation Mode . . . . . . . . . . . . . . . . . . . . . . .
Using PC Cards
. . . . . . . . . . . . . . . . . . . . . . . . .
About PC Cards . . . . . . . . . . . . . . . . . . . . . . . .
Limitations of Operation during Suspend and Hibernation
Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Copyright IBM Corp. 1995
vii
viii
viii
ix
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Chapter 1. Getting Started . . .
About the Product Map . . . . . .
Checking Your Items . . . . . . . .
Other Symbols on the Product Map
Setting Up Your Computer . . . .
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1
2
2
4
6
xi
Using the PC Card Director Program .
Using the Infrared Communication Feature
Considerations for Communication . .
Using the Mwave DSP Features . . . . .
Using the Audio Function
. . . . . . .
Using the Telephony Function . . . . .
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62
72
74
75
78
84
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91
92
92
93
94
95
96
96
98
103
104
104
105
106
Chapter 5. Protecting Your Computer . . . . . . .
Using Passwords . . . . . . . . . . . . . . . . . . . . .
Power-On Password . . . . . . . . . . . . . . . . .
Hard-Disk Password . . . . . . . . . . . . . . . . .
Supervisor Password . . . . . . . . . . . . . . . . .
Using the Hard-Disk and Power-On Passwords . .
Using the Supervisor and Hard-Disk Passwords .
Using Several Hard Disk Drives with the Supervisor
Password . . . . . . . . . . . . . . . . . . . . . . .
Using the Personalization Utility Program . . . . . . .
Using Locks . . . . . . . . . . . . . . . . . . . . . . . .
Using the Lock on the Hard Disk Drive . . . . . . .
Using the Security Lock
. . . . . . . . . . . . . . .
Using the PC Card Lock . . . . . . . . . . . . . . .
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109
110
110
114
118
122
122
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123
125
130
130
131
132
Chapter 6. Installing and Removing Options . .
Installing and Removing PC Cards . . . . . . . . . .
Inserting the PC Card . . . . . . . . . . . . . . . .
Removing the PC Card . . . . . . . . . . . . . . .
Increasing Memory Capacity . . . . . . . . . . . . .
Installing an IC DRAM Card and DIMM . . . . .
Removing the IC DRAM Card and DIMM . . . .
Replacing the Hard Disk Drive . . . . . . . . . . . .
Installing Options in the Diskette Drive Compartment
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133
134
134
136
137
138
143
148
150
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Chapter 4. Using Battery Power . . . . .
Operating Time with the Battery Pack . . .
. . . . . . . . .
Charging the Battery Pack
Charging with the AC Adapter . . . . . .
Charging with the Travel Quick Charger
Replacing the Battery Pack . . . . . . . . .
Monitoring the Battery-Power Status . . . .
Using the Battery-Power Status Indicator
Using the Fuel-Gauge Program . . . . .
Preserving Battery-Pack Life . . . . . . . .
Maximizing Battery-Powered Operation . .
.
Using Advanced Power Management
Decreasing LCD Brightness . . . . . . .
Using Power-Saving Modes . . . . . . .
xii
IBM ThinkPad 755CX User's Guide
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Reinstalling the Option Cover and Front Bezel . . . . . . . .
Installing the DAA/Telephony Kit . . . . . . . . . . . . . . . . . .
Attaching an External Numeric Keypad or a Mouse . . . . . . .
Using the Mouse and Other Pointing Devices . . . . . . . . .
Using a Mouse on the IBM ThinkPad Space Saver Keyboard
Attaching an External Keyboard . . . . . . . . . . . . . . . . . .
Attaching a Printer . . . . . . . . . . . . . . . . . . . . . . . . . .
Attaching an External Display . . . . . . . . . . . . . . . . . . . .
Changing the Display Mode . . . . . . . . . . . . . . . . . . .
Setting the Monitor Type and the Display Driver . . . . . . .
Connecting the External Display to the Computer
. . . . . .
Changing the Screen Resolution or Color Depth . . . . . . .
Using SVGA Display Drivers . . . . . . . . . . . . . . . . . . .
Attaching the IBM Dock I or Dock II . . . . . . . . . . . . . . . .
153
155
159
160
161
163
164
165
166
167
169
170
171
172
Chapter 7. Installing Software . . . . . .
What You Need for Your Computer . . . .
Installing the Operating System
. . . . . .
. . . .
IBM OS/2 Warp or Version 2.11
IBM DOS Version 7.0 or Later . . . . . .
Microsoft Windows Version 3.11 or Later
Installing the ThinkPad Features Program
Installing for OS/2 . . . . . . . . . . . . .
Installing for DOS . . . . . . . . . . . . .
Installing for Windows
. . . . . . . . . .
Installing the PCMCIA Device Driver . . . .
Installing for OS/2 . . . . . . . . . . . . .
Installing for DOS . . . . . . . . . . . . .
Installing for Windows
. . . . . . . . . .
Installing the ThinkPad Display Driver . . .
Installing for OS/2 Warp . . . . . . . . .
Installing for OS/2 V.2.11 . . . . . . . . .
Installing for Windows
. . . . . . . . . .
Installing the Mwave Support Software . .
Installing for OS/2 . . . . . . . . . . . . .
Installing for DOS . . . . . . . . . . . . .
Installing for Windows
. . . . . . . . . .
Installing the Infrared Device Driver . . . .
Installing for OS/2 . . . . . . . . . . . . .
Installing for Windows
. . . . . . . . . .
Chapter 8. Solving Computer Problems
Commonly Asked Problems and Actions .
Testing the Computer . . . . . . . . . . . .
Troubleshooting Charts . . . . . . . . . . .
LCD Problems . . . . . . . . . . . . . . .
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173
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199
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Contents
xiii
Screen Messages . . . . . . . . . . . . . . . . . . . . . . .
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . .
General Problems . . . . . . . . . . . . . . . . . . . . . . .
What If Testing Cannot Find the Problem? . . . . . . . . . .
Battery Power Problems . . . . . . . . . . . . . . . . . . .
Diskette Drive Problems . . . . . . . . . . . . . . . . . . .
Mwave DSP Feature Problems . . . . . . . . . . . . . . .
Infrared Communication Problems . . . . . . . . . . . . .
Software Problems . . . . . . . . . . . . . . . . . . . . . .
Option Problems . . . . . . . . . . . . . . . . . . . . . . . .
Keyboard, External Numeric Keypad, and Pointing Device
Problems . . . . . . . . . . . . . . . . . . . . . . . . . . .
External Display Problems . . . . . . . . . . . . . . . . . .
Printer Problems . . . . . . . . . . . . . . . . . . . . . . . .
Intermittent Problems . . . . . . . . . . . . . . . . . . . . .
Listing Installed Options . . . . . . . . . . . . . . . . . . . . .
Recording Identification Numbers
. . . . . . . . . . . . . . .
Getting Service . . . . . . . . . . . . . . . . . . . . . . . . . .
The IBM HelpClub: Another Great Choice (for European
Countries) . . . . . . . . . . . . . . . . . . . . . . . . . . .
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206
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216
218
220
220
221
222
223
. .
224
. . . . . . . . . .
227
Appendix B. Advanced Information for PC Cards . . . . . .
Auto Configurator for the PC Card Director Program . . . . . .
Example When a Modem Card Is Used . . . . . . . . . . . .
Example When the Auto Configurator Is Not Used . . . . . .
Example of the Memory Area for the Card Services and 3270
Operational Considerations for PCMCIA
. . . . . . . . . . . . .
Software Considerations for OS/2 . . . . . . . . . . . . . . . .
Software Considerations for DOS . . . . . . . . . . . . . . . .
Software Considerations for Windows . . . . . . . . . . . . .
231
231
232
232
233
234
234
235
242
Appendix C. Additional Information for Mwave DSP
Features . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Information . . . . . . . . . . . . . . . . . . . . . .
Sound . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mwave MIDI Overview . . . . . . . . . . . . . . . . .
Telephony Information . . . . . . . . . . . . . . . . . . .
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243
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243
244
247
Appendix D. Features and Specifications
Features . . . . . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . .
IBM Power Cords . . . . . . . . . . . . . . . .
Diskette Standards . . . . . . . . . . . . . . .
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249
249
251
252
254
Appendix A. Avoiding Hardware Conflicts
xiv
IBM ThinkPad 755CX User's Guide
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Appendix E. Product Warranties and Notices
Notices . . . . . . . . . . . . . . . . . . . . . . . .
Trademarks
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Electronic Emission Notice . . . . . . . . . . . .
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255
261
261
263
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269
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273
Glossary
Index
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Contents
xv
xvi
IBM ThinkPad 755CX User's Guide
Chapter 1. Getting Started
Welcome to the world of ThinkPad computers!
The IBM ThinkPad 755CX is one of the most advanced computers
for your mobile computing needs. It can used both inside and
outside your office.
This chapter describes the Product Map and the steps for setting up
the computer.
About the Product Map . . . . . .
Checking Your Items . . . . . . . .
Other Symbols on the Product Map
Setting Up Your Computer . . . .
Copyright IBM Corp. 1995
. . .
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2
2
4
6
1
Getting Started
About the Product Map
The Product Map is a foldout diagram that you will see first when
you unpack the computer. Using the Map will help you become
familiar with your computer. When you physically place the shipping
items and options on the Map, you will be able to check that all items
were shipped to you.
Checking Your Items
Remove the Product Map from the box and spread it on a desk or
flat surface. Next, remove each item and place it on the Map in the
position indicated by the numbers in the following figure. If any item
is missing or damaged, contact your place of purchase.
2
IBM ThinkPad 755CX User's Guide
Getting Started
1
The keyboard template shows
function-key assignments when
placed on the keyboard.
†
6
The Utility Diskette contains the
various system programs.
†
7
2
The power cord connects the AC
Adapter to the electrical outlet.
The PCMCIA Features
Diskette contains the
programs for the PCMCIA
function.
3
The AC Adapter plugs into an
electrical outlet and supplies power
to the computer.
The Video Features Diskette
for OS/2 and Video Features
Diskette for Windows
contain the video system
programs for the different
operating systems.
4
The User's Guide is this book. It
provides the installing and operating
information about your computer.
5
The battery pack supplies power to
the computer for mobile operation.
†
8
Miscellaneous items are supplied
in an envelope that contains:
Spare caps for TrackPoint III
Wallet for telephone cable
PCMCIA slot cover with cable
opening
PC Card lock
Adhesive strap
Application envelope (for some
countries)
Other items
The Infrared Features
Diskette contains the infrared
communication support
programs.
The Mwave DSP Features
Diskettes contain the DSP
(digital signal processor)
support programs.
For some countries, the shipment contains no diskettes.
Therefore, you cannot place items on the diskette icons when checking the items shipped with your computer.
You can either create the diskettes yourself or you can purchase them. You can create diskettes with the Diskette Factory program, which is
preinstalled in your computer. Follow the prompts that appear when the computer is turned on for the first time. You can also purchase the
diskettes; call 1-800-772-2227 for purchasing information in the U.S., or contact your IBM authorized reseller or IBM marketing representative.
Follow the instructions on “Building System Diskettes” in the Preload Guide.
Chapter 1. Getting Started
3
Getting Started
Other Symbols on the Product Map
This section describes the slots, connectors, and options that are
shown on the Product Map. To install options, refer to Chapter 6.
4
IBM ThinkPad 755CX User's Guide
Getting Started
1
The serial connector is where you
connect a 9-pin, serial-device cable.
2
The parallel connector is where
you usually connect a
parallel-printer signal cable.
3
The external-display connector is
where you connect the signal cable
of a video graphics adapter (VGA),
super video graphics adapter
(SVGA), or compatible display.
4
The infrared ports are used to
make point-to-point communication
with other devices with an infrared
port.
5
The system expansion connector
is used to connect the Dock I, Dock
II, or Port Replicator option.
6
The mouse connects directly to the
external input-device connector or is
used with the external numeric
keypad.
7
The external keyboard connects
to the external input-device
connector through the
keyboard/mouse connector.
8
The external numeric keypad
connects to the external
input-device connector.
9
The PCMCIA slots accept one or
two cards based on Personal
Computer Memory Card
International Association
(PCMCIA).
1
The security keyhole is used
with the Kensington**
MicroSaver** Security System
(hereafter called Kensington lock)
or a compatible lock to protect the
devices inside of the computer.
11
The memory slot, which is under
the removable diskette drive,
accepts an integrated-circuit
dynamic random-access memory
(IC DRAM) card or a dual inline
memory module (DIMM) adapter
with one or two DIMM memory
options.
12
The modem/fax port is where you
connect a telephone connector or
attachment.
Note: This is offered as an option
in some countries.
13
The microphone/line-in jack, a
1/8-inch (3.5-mm) diameter jack, is
where a stereo microphone or
external audio device is connected.
An externally powered dynamic
microphone or condenser
microphone, or an equivalent audio
device, can be used.
14
The headphone jack, a 1/8-inch
(3.5-mm) diameter jack, is where
you connect a stereo headphone or
external speakers.
Warning:
To avoid possible loss of
hearing, do not put on the
headphones until after you have
turned on the computer or
connected the headphones to
this jack.
Chapter 1. Getting Started
5
Getting Started
Setting Up Your Computer
You are now ready to assemble and start your computer. The
following steps will guide you through the process.
The following conventions are used in the illustrations appearing in
this chapter:
1 Indicates a main sequence of actions.
Indicates a subsequence of actions in a main action. An arrow
accompanying the number shows the direction of movement.
1 Slide the latches on the sides of the computer
halfway toward the front; then open the liquid crystal
display (LCD).
2 Slide the same two latches forward again all the way
toward the front; then raise the keyboard.
Some pressure might be needed to slide these latches if they
are tight.
3 Install the battery pack into the middle compartment
and firmly press it in to make sure of the electrical
connection; then close the keyboard.
Sliding the latches forward while closing the keyboard makes it
easier to close the keyboard.
CAUTION:
The battery pack provided with your computer contains a
small amount of harmful substances. To avoid possible
injury:
Do not touch the battery terminals to any metal
objects.
Keep the battery pack away from fire.
Do not soak the battery pack in water or expose it to
rain.
Do not attempt to disassemble the battery pack.
Avoid mechanical shocks to the battery.
Always use battery packs recommended by IBM.
Keep the battery pack away from children.
6
IBM ThinkPad 755CX User's Guide
Getting Started
Right Side View
1
2
1
2
2
1
3
2
3
1
Chapter 1. Getting Started
7
Getting Started
4 Connect the AC Adapter as shown.
5 Position the speaker volume control to “3.”
6 Push and release the power switch to turn on the
computer.
The power switch automatically returns to its original position
after you push and release it.
7 Position the LCD so that it is convenient for viewing;
) as shown.
then position the brightness (
8 After a single beep, one of the following screens
appears, confirming that the system is operating
correctly.
(In some countries, the demonstration program runs
automatically and its associated screen appears.) If any other
screen appears, see “Screen Messages” on page 206.
An Operating System screen
Date and Time menu
1995 .03.31
Year
Month
Day
23:59:59
Hour
If you purchased a computer with a preinstalled
operating system, the startup screen of the
operating system appears. (The screen shown is
an example of an operating system screen.)
Install your application programs by following
the instructions in the documentation that
came with the programs.
IBM ThinkPad 755CX User's Guide
Second
This screen instructs you to set the initial date and
time.
Note: For the 755CX SVGA model, the screen
image might look smaller than this sample.
To set the date and time, see “Using
Easy-Setup” on page 42.
Congratulations!
You have successfully completed the basic setup of your computer!
8
Month
Getting Started
4
1
3
2
5
6
7
Chapter 1. Getting Started
9
Getting Started
10
IBM ThinkPad 755CX User's Guide
Chapter 2. Getting Familiar with Your Computer
This chapter provides general information about your computer.
Locations and Functions . . . . . . . . . . . . . . . . . . . .
System-Status Indicators . . . . . . . . . . . . . . . . . . .
Providing Power
. . . . . . . . . . . . . . . . . . . . . . . .
AC Adapter . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . .
Car Battery Adapter . . . . . . . . . . . . . . . . . . . . .
Operating with the TrackPoint III . . . . . . . . . . . . . . .
Changing the Cap . . . . . . . . . . . . . . . . . . . . . .
Operating the Numeric Keypad . . . . . . . . . . . . . . . .
Using the Display . . . . . . . . . . . . . . . . . . . . . . . .
Using a DOS Application with Your 755CX SVGA Model
Using the Online Book . . . . . . . . . . . . . . . . . . . . .
Starting for OS/2 or Windows . . . . . . . . . . . . . . .
Starting for DOS . . . . . . . . . . . . . . . . . . . . . . .
Keeping the Computer from Being Damaged . . . . . . . .
Carrying the Computer . . . . . . . . . . . . . . . . . . . . .
Copyright IBM Corp. 1995
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12
16
18
18
20
22
23
25
26
27
28
29
29
29
30
31
11
Locations and Functions
Locations and Functions
This section provides additional useful information about your
computer.
Front View
1
16
15
2
14
13
3
10
4
12
5
6
11
10 9
12
IBM ThinkPad 755CX User's Guide
8
7
Locations and Functions
1
The color LCD screen, which
uses a thin film transistor (TFT)
technology, displays the
computer output and can be
moved to any desired viewing
angle.
4
The indicator panel consists
of the system-status indicators
and their associated symbols.
These indicators show the
current status of the computer.
(See page 16.)
The external input-device
connector is used to attach a
mouse, external keyboard, or
external numeric keypad to the
computer.
(See page 159–163.)
11 The click buttons are used
with the TrackPoint III.
12 The front infrared port allows
the computer to communicate
with other devices that have
the same capability.
(See page 72.)
755CX SVGA model
supports SVGA
(800-by-600 resolution)
video mode besides VGA
(640-by-480) with 65 536
colors.
5
755CX VGA model
supports only VGA mode
with 65 536 colors.
6
PCMCIA slots accept one or
two PC Cards.
(See page 134.)
14 TrackPoint III is a built-in
pointing device that provides a
function similar to that of a
mouse.
(See page 23.)
7
The PC Card eject buttons
eject the PC Card from the
upper or lower PCMCIA slot.
15 The volume control adjusts
the sound level for the built-in
speaker.
8
The keyboard is used to enter
data into the computer. To use
the numeric keypad, see 26.
9
The security keyhole is used
with a Kensington lock or a
compatible lock to protect your
computer.
(See page 131.)
16 The built-in speaker
reproduces computer sounds
such as beeps, music, or
voices.
(See page 75.)
1
The release latches release
the LCD or keyboard so they
can be opened.
A 1024-by-768 resolution video
at maximum can be produced
on any attached external
display that supports the
resolution mode.
(See page 165.)
2
The built-in microphone
captures sound and voice
when it is used with an
application program capable of
handling an audio or telephony
function.
(See page 75.)
3
The brightness control moves
up or down to adjust the
brightness of the display.
13 The Fn key is used to activate
the Fn key functions.
(See page 48.)
Chapter 2. Getting Familiar with Your Computer
13
Locations and Functions
Inside View
Bottom View
6
Rear View
14
IBM ThinkPad 755CX User's Guide
Locations and Functions
Inside View
1
The modem/fax port release
latch releases the modem/fax
port from the computer.
(See page 155.)
2
The removable diskette drive
reads data from or writes data
to a diskette. One 3.5-inch,
1.44MB or 2.88MB diskette
drive can be installed.
The 2.88MB drive supports
the following diskettes (the
formatted capacities are
shown in parentheses):
1MB (720KB), 1.6MB
(1.2MB), 2MB (1.44MB), or
4MB (2.88MB).
The 1.44MB drive supports
the following diskettes:
1MB (720KB) or 2MB
(1.44MB).
Rear View
1
The rear door covers the
connectors at the rear of the
computer.
2
The connector door allows
the connection of a cable to
the system-expansion
connector when the rear
door is closed.
3
The power switch turns the
computer on and off.
4
The headphone jack, a
1/8-inch (3.5-mm) diameter
jack, is where you connect a
stereo headphone or external
speakers.
(See page 76.)
5
(For installing options in the
diskette drive compartment:
see page 150.)
The memory slot, which is
under the removable diskette
drive, accepts an IC DRAM
card or a dual inline memory
module (DIMM) adapter with
one or two DIMM memory
options.
(See page 137.)
6
4
The diskette-eject button
ejects a diskette from the
diskette drive.
7
5
The battery pack allows you
to operate the computer when
ac power is not available.
(See page 20.)
3
6
The removable hard disk
drive can be replaced with one
with a different capacity.
(See page 148.)
8
The microphone/line-in
jack, a 1/8-inch (3.5-mm)
diameter jack, is where a
stereo microphone or
external audio device is
connected.
(See page 76.)
The modem/fax port is
where you connect a
telephone connector or
attachment. This is offered
as an option in some
countries.
(For using: see page 76. For
installing: see page 155.)
The option cover can be
removed when options are
used in the diskette-drive
compartment.
(See page 153.)
9
The power shutdown switch
is used to turn the computer off
when the application locks up
or the computer will not accept
any input. Use the tip of a pen
to press this switch.
1
The rear infrared port
(See “Front Infrared Port” on
page 13.)
11 The external-display
connector is where you
connect the signal cable of a
video graphics adapter (VGA),
super video graphics adapter
(SVGA), or compatible display.
(See page 165.)
12 The parallel connector is
where you usually connect a
parallel-printer signal cable.
(See page 164.)
13 The serial connector is where
you connect a 9-pin,
serial-device cable.
14 The power jack is where the
AC Adapter cable is
connected.
Bottom View
1
The locking lever is used with
a chain to lock and prevent the
keyboard from being opened.
It secures the internal devices
under the keyboard.
(See page 130.)
2
The legs are used to adjust
the keyboard angle.
The system-expansion
connector is used to
connect the IBM Dock I,
Dock II, or Port Replicator.
(See page 172.)
Chapter 2. Getting Familiar with Your Computer
15
System-Status Indicators
System-Status Indicators
The system-status indicators show the current status of your
computer by their on or off states or by their colors (green, yellow,
and orange). Each indicator is identified by a symbol.
The following figure and table show the location of each symbol and
the meaning of each indicator:
Symbol
1 Speaker
2 Battery power status
3 Battery charging
16
Color
Blinking green
Green
Yellow
Orange
Blinking orange
Green
Blinking green
Meaning
When enabled by the ThinkPad Features program, this indicator
blinks when the speaker sounds. It turns off when any key is
pressed. (To enable this indicator, see “Using the ThinkPad
Features Program” on page 35.)
Shows the condition of the battery pack.
Green or yellow
Orange
Blinking orange
Enough power remains for operation.
Some power remains for operation.
The battery pack needs charging.
Indicates that the battery pack is being charged.
Indicates that the battery pack is being discharged before being
charged.
4 PC card active
Orange
Turns on when power is supplied to the PCMCIA slot. Refer to the
PC Card manual to see if the PC Card can be removed without
turning the computer off.
5 Diskette drive in use
Orange
Turns on when data is read from or written to a diskette. Do not
enter suspend mode or eject the diskette when this indicator is on.
6 Hard disk in use
Orange
Turns on when data is read from or written to the hard disk. Do not
enter suspend mode or turn off the computer when this indicator is
on.
IBM ThinkPad 755CX User's Guide
System-Status Indicators
Symbol
7 Numeric lock
Color
Green
Meaning
Indicates that the numeric keypad on the keyboard is enabled. The
keypad is enabled and disabled by pressing and holding the Shift
key, and pressing the NumLk key. For more information about the
numeric keypad, see “Operating the Numeric Keypad” on page 26.
8 Caps lock
Green
Indicates that the Caps Lock mode is enabled. All alphabetic
characters (A-Z) are entered in capital letters without the use of the
Shift key. The Caps Lock mode is enabled and disabled by
pressing the Caps Lock key.
9 Scroll lock
Green
Alternately turns on and off each time the ScrLk key is pressed.
1
Suspend mode
Green
Blinking green
11 Power on
Green
While this indicator is on, the Arrow keys are used as screen-scroll
function keys. In this state, the cursor cannot be moved with the
Arrow keys. Not all application programs support this function.
Indicates that the computer is in suspend mode. See page 50 for
more information about suspend mode.
Indicates that the computer is entering suspend or hibernation
mode, or is resuming normal operation.
Indicates that the computer is operational. This indicator is on
when the computer is on and not in suspend mode.
Chapter 2. Getting Familiar with Your Computer
17
Providing Power
Providing Power
Your computer can be operated with the AC Adapter, battery pack,
or Car Battery Adapter (available as an option).
AC Adapter
Note:
When the AC Adapter is connected,
and the remaining power of the
installed battery pack is less than a
certain amount, discharging and
then charging of the battery pack
starts automatically.
The AC Adapter is an alternating-current-to-direct-current (ac-to-dc)
converter that supplies power for the computer. The AC Adapter
also charges the battery pack when the battery pack is installed in
the computer. The input rating for the AC Adapter is 100–240 V ac,
50/60 Hz.
CAUTION:
Do not attempt to open the AC Adapter case. The AC Adapter
is permanently sealed and cannot be repaired.
Warning:
Always use the AC Adapter
certified by IBM in the country
where you will be using the
computer. Operating the
computer with an incorrect AC
Adapter can cause damage to the
battery pack and to the computer.
18
IBM ThinkPad 755CX User's Guide
If you turn on the computer when the battery pack is installed, you
will hear a short beep when you connect or disconnect the AC
Adapter from the computer. This short beep means that the power
source has been changed.
When the AC Adapter cable is disconnected from the computer with
a battery pack installed, the LCD brightness decreases slightly to
conserve battery power.
Providing Power
To Wrap and Fasten the AC Adapter Cable
When you carry the AC Adapter with your computer, you can
wrap and fasten the cable as follows:
1
1
2
3
Chapter 2. Getting Familiar with Your Computer
19
Providing Power
Battery Pack
The battery pack is an internal power source for the computer when
the AC Adapter is not available. The battery pack can be recharged
with the AC Adapter or the battery charger (available as an option).
Battery packs are shipped from the factory in an almost discharged
state, so you must charge them before use.
To operate your computer with the battery pack, see Chapter 4.
You can use the following battery packs for the ThinkPad 755CX.
Lithium Ion Battery Pack
The following table shows the operating time of the computer with a
fully charged lithium ion battery pack:
Note:
* The operating time depends on
the options used with the computer,
the frequency of key input,
applications, and the configuration
of the system, so it might be shorter
or longer than the following time.
20
IBM ThinkPad 755CX User's Guide
Model
755CX SVGA model
755CX VGA model
Battery Operating Time
3.0 — 9.0 hours *
3.2 — 10.0 hours *
Providing Power
Nickel Metal Hydride Battery Pack
The following table shows the operating time of the computer with a
fully charged nickel metal hydride battery pack (hereafter called
NiMH battery pack):
Note:
* The operating time depends on
the options used with the computer,
the frequency of key input,
applications, and the configuration
of the system, so it might be shorter
or longer than the following time.
Model
755CX SVGA model
755CX VGA model
Battery Operating Time
2.4 — 7.0 hours *
2.6 — 8.0 hours *
Before Using the NiMH Battery Pack
This battery pack has an internal microprocessor to send the
battery status to the computer. The storage switch 1 on the
battery pack sets this microprocessor on or off. When you use
this battery pack for the first time, set the switch to the on ( | )
position.
Do not slide the storage switch to the off position ( O ) after you
set it to the on position at the time of purchase. If you set this
switch to the off position by mistake, slide the switch to the on
position ( | ); then discharge and recharge it to make sure the
microprocessor sends the correct status of the battery to the
computer.
Chapter 2. Getting Familiar with Your Computer
21
Providing Power
For Your Information
Standby Battery: Your computer has another rechargeable
battery, called the standby battery. It supplies the necessary
power to save data when a battery pack is replaced during
suspend mode. The standby battery can be replaced only by
your IBM authorized reseller or IBM marketing representative. To
charge the standby battery, connect the AC Adapter to the
computer. When using the computer for the first time, let the
battery charge for at least 8 hours to allow it to become fully
charged.
Car Battery Adapter
The Car Battery Adapter, available as an option, plugs into the
cigarette lighter socket of a car and supplies power to your computer.
See the manual supplied with the Car Battery Adapter for more
information.
22
IBM ThinkPad 755CX User's Guide
Using the TrackPoint III
Operating with the TrackPoint III
Note:
No other software is required for the
TrackPoint III; it works with the
PS/2 mouse driver.
The keyboard contains a unique cursor-pointing device called the
TrackPoint III. Pointing, selecting, and dragging all become part of
a single process, without moving your fingers from their typing
position.
The TrackPoint III consists of a stick 1 on the keyboard and a pair
of click buttons 2 below the keyboard. The motion of the cursor
on the screen is controlled by the amount of pressure applied to the
nonslip cap stick in any direction parallel to the keyboard; the stick
does not move. The speed at which the cursor moves corresponds
to the amount of pressure on the stick. The function of the click
buttons depends on the software that is used.
Chapter 2. Getting Familiar with Your Computer
23
Using the TrackPoint III
If you are not familiar with the TrackPoint III, these instructions will
help you get started:
Note:
Remember that the stick does not
move, and your finger should not
move on it.
Note:
The mouse cursor may drift in some
computer conditions. It is not a
defect. Do not use the TrackPoint
III until the pointer stops moving.
1 Place your hands in the typing position and press gently
on the stick with either index finger in the direction in
which you want the cursor to move.
Pressing the stick away from you moves the cursor up the
screen; pressing it toward you moves the cursor down the
screen. You can also move the cursor side to side by
pressing sideways.
2 Press the click buttons with either thumb to select and
drag as required by your software, as with any other
pointing device.
Hints and Tips
You can easily drag an item across the screen without constantly
pressing the click buttons of the TrackPoint III. To drag and drop an
object, press the click button and slide it toward the front of the
computer. The click button locks in place; you can now drag the object
across the screen with the TrackPoint III stick without holding down the
click button.
To release the latch, press it from the front side of the click button.
24
IBM ThinkPad 755CX User's Guide
Using the TrackPoint III
Changing the Cap
The cap 1 on the end of the TrackPoint III is removable. You can
replace it with one of the spares shipped with your computer.
Chapter 2. Getting Familiar with Your Computer
25
Operating the Numeric Keypad
Operating the Numeric Keypad
The keyboard has some keys that, when enabled, work as if they
were a 10-key numeric keypad. (The numeric keypad on the
keyboard is not active when the external numeric keypad is attached
to the computer.)
To enable the numeric keypad, press and hold Shift and then press
NumLk.
NumLk
7
8
9
4
5
1
/
*
6
2
.
0
Note:
The keys are functional, but the
function of the key is not printed on
the keytop.
-
3
+
When the keypad is enabled, press and hold Shift to temporarily
use the cursor- and screen-control keys.
NumLk
PgUp
Home
/
*
End
Ins
PgDn
Del
+
To disable the numeric keypad, press and hold Shift; then press
NumLk again.
26
IBM ThinkPad 755CX User's Guide
Using the Display
Using the Display
The LCD of your computer supports the following video mode for
each model:
The 755CX SVGA model supports VGA (640-by-480 resolution)
video mode and SVGA (800-by-600) video mode.
The 755CX VGA model supports VGA (640-by-480) video mode
only.
Both models can display the computer output with up to 65 536
colors.
To attach the external
display:
Page 165.
When you attach the external display that supports higher resolution
than VGA, you can get a 1024-by-768 resolution video at maximum.
To change the display mode:
Page 166.
To display the computer output on the external display, you need to
set the display mode appropriately. You can select one of the
following display modes:
LCD only: The computer output is displayed only on the LCD.
CRT only: The computer output is displayed only on the
attached external display.
When no external display is attached to the computer, the
output is displayed on the LCD.
Both: The computer output is displayed on both the LCD and
the external display.
When no external display is attached to the computer, the
output is displayed only on the LCD.
Chapter 2. Getting Familiar with Your Computer
27
Using the Display
Using a DOS Application with Your 755CX SVGA Model
When you use a DOS application that supports only VGA mode
(640-by-480 resolution) with your 755CX SVGA model, the screen
image might appear smaller than the display size shown in the
following table. This is to maintain compatibility with DOS
applications.
Note:
* When you select Both, do not
attach the external display that
supports only VGA mode
(640-by-480 resolution). Otherwise,
the screen of the external display is
disordered and the output is not
displayed.
Display Mode
Both
LCD only
CRT only
640 x 480
On the LCD
640 x 480
On the
external
display *
640 x 480
640 x 480
The screen
image appears
in the center
of LCD and
looks smaller
than the actual
LCD size.
28
IBM ThinkPad 755CX User's Guide
The screen
image is the
same size as
the actual
screen size.
The screen
image appears
in the center
of LCD and
looks smaller
than the actual
LCD size.
—or—
640 x 480
Using the Online Book
Using the Online Book
Notes:
The online book is not available
in all countries.
You can view this User's Guide online to retrieve information when
the hardcopy book is not available. The online book provides a very
easy way of getting needed information when you are traveling.
The online book is available
only when the operating system
is installed at the time of
purchase.
OS/2
WIN
Starting for OS/2 or Windows
Click on the Online Book icon.
DOS
Starting for DOS
1 Type CD\READIBM at the command prompt and press
Enter.
2 Type READIBM and press Enter.
The menu for the online book appears. Choose any subject
from the menu.
Hints and Tips
You can leave a “bookmark” or write notes as you read through the
online book:
To leave the book with a bookmark, select Place closing bookmark
when you exit the online book.
To write notes:
1. Position the cursor at the place where you want to write a note.
2. Select Notes from the action bar; then select Create... from the
pull-down menu.
3. Write any note; then save it.
A symbol (>) is placed next to where you left the note. To read the
note, select Display/Edit... from the Note pull-down menu.
Chapter 2. Getting Familiar with Your Computer
29
Keeping the Computer from Being Damaged
Keeping the Computer from Being Damaged
Your computer is a delicate device that requires careful handling. To
keep it from being damaged, keep these precautions in mind:
Do not apply shock to your computer.
Do not place anything heavy on your computer.
Do not pour liquid into your computer.
Do not leave any objects (especially metal objects) in the
computer.
Keep the computer at least 13 cm (5 in.) away from any
electrical appliance that generates a strong magnetic field such
as a motor, magnet, TV, refrigerator, or large audio speakers.
Use your computer when temperatures are between 5°C to 35°C
(41°F to 95°F).
Do not disassemble the computer.
Do not scratch, twist, hit, or push the surface of the LCD.
Remove the battery pack and keep it in a cool place if you will
not be using the computer for a long period of time.
The removable hard disk drive and diskette drive are also very
delicate devices that need careful handling. To avoid damage, do
not press on them, drop them, or apply any shock to them when they
are removed from the computer.
Do not press on the middle part of the diskette drive.
Insert a diskette straight into the diskette drive. Inserting it at an
angle can damage the front of the diskette drive.
Do not place more than one diskette label on a diskette. Two or
more labels can cause a label to tear apart inside the drive and
cause damage to the diskette drive.
Occasionally clean your computer as follows:
Use a soft cloth moistened with nonalkaline detergent to wipe the
exterior of the computer.
Gently wipe the LCD with a dry, soft cloth. Do not use alcohol or
detergent.
30
IBM ThinkPad 755CX User's Guide
Carrying the Computer
Carrying the Computer
When carrying your computer, follow these instructions to prevent
possible damage to your computer and data:
Note:
To reduce the weight of the
computer when traveling, remove
the diskette drive if you will not be
using it.
To remove the diskette drive:
Page 150.
1 Remove any diskette from the diskette drive.
2 Turn off all attached devices.
3 Turn off the computer and close the LCD.
4 Unplug all external cables and cords connected to the
computer.
5 Make sure all computer doors and covers are closed.
For Your Information
1. You should occasionally back up data from the hard disk to
diskettes or tapes.
2. To use the AC Adapter outside your home country, you need
an ac power cord that is certified for the country you are
visiting. You can purchase one through IBM authorized
reseller or IBM marketing representative in that country. For
information about power cords, see “IBM Power Cords” on
page 252.
3. A carrying case is available from your IBM authorized reseller
or IBM marketing representative.
Chapter 2. Getting Familiar with Your Computer
31
Carrying the Computer
32
IBM ThinkPad 755CX User's Guide
Chapter 3. Operating Your Computer
This chapter provides information about the use of your computer.
What Happens When Power Is Turned On? . . . . . . . . .
Using the ThinkPad Features Program . . . . . . . . . . . .
Using the Program for OS/2 and Windows
. . . . . . . .
. . . . . . . . . . . . . . . . . . .
Using the PS2 Program
Using the Batch File . . . . . . . . . . . . . . . . . . . .
Using Easy-Setup
. . . . . . . . . . . . . . . . . . . . . . . .
Starting Easy-Setup . . . . . . . . . . . . . . . . . . . . . .
Selecting Easy-Setup Items
. . . . . . . . . . . . . . .
Using the Selectable Drive-Startup Sequence . . . . . . .
Changing the Startup Sequence . . . . . . . . . . . . .
Using the Fn Key Function . . . . . . . . . . . . . . . . . . .
Using Power Management . . . . . . . . . . . . . . . . . . .
Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . .
Suspend Mode
. . . . . . . . . . . . . . . . . . . . . . . .
Safe Suspend
. . . . . . . . . . . . . . . . . . . . . . .
Considerations for Suspend Mode . . . . . . . . . . . .
Hibernation Mode . . . . . . . . . . . . . . . . . . . . . . .
Creating the Hibernation File . . . . . . . . . . . . . . .
Considerations for Hibernation Mode . . . . . . . . . .
Using PC Cards
. . . . . . . . . . . . . . . . . . . . . . . . .
About PC Cards . . . . . . . . . . . . . . . . . . . . . . . .
Limitations of Operation during Suspend and Hibernation
Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the PC Card Director Program . . . . . . . . . . . .
Understanding the Meaning of Icons . . . . . . . . . .
Starting PC Card Director for OS/2 . . . . . . . . . . .
Starting PC Card Director for DOS
. . . . . . . . . . .
Starting PC Card Director for Windows . . . . . . . . .
Using the Infrared Communication Feature . . . . . . . . . .
Considerations for Communication . . . . . . . . . . . . .
Using the Mwave DSP Features . . . . . . . . . . . . . . . .
Using the Audio Function
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
For OS/2
For DOS . . . . . . . . . . . . . . . . . . . . . . . . . . .
For Windows or WIN-OS/2 . . . . . . . . . . . . . . . .
Using the Telephony Function . . . . . . . . . . . . . . . .
Connecting the Telephone Cable . . . . . . . . . . . .
Using the Mwave Modem . . . . . . . . . . . . . . . . .
Mwave Data Modem . . . . . . . . . . . . . . . . . . . .
Using the Country Selection . . . . . . . . . . . . . . .
Mwave Call Discriminator . . . . . . . . . . . . . . . . .
Mwave Fax Modem . . . . . . . . . . . . . . . . . . . .
Mwave Telephone Answering Machine . . . . . . . . .
Copyright IBM Corp. 1995
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33
What Happens after Power-On?
What Happens When Power Is Turned On?
One of the following prompts appears when the computer is turned on:
An operating system screen appears when the computer is operating
correctly. The screen appearance may differ depending on your operating
system.
An operating system screen
F1
F2
F10
This screen appears when an operating system is not found. It instructs you
to insert a self-starting diskette into the diskette drive and press F1 to start
the diskette. The order in which the computer checks the drives for an
operating system is set in the drive-startup sequence. See “Using the
Selectable Drive-Startup Sequence” on page 47 for more information.
This screen instructs you to set the date and time for the first time. Enter the
date and time (see page 44); then press Enter.
1995 .03.31
Year
Month
Day
23:59:59
Hour
Month
Second
This screen indicates that a failure occurred during the power-on self-test
(POST). See page 207 for the necessary actions.
This icon appears when a power-on password is set. To start the computer,
enter the correct password.
This icon appears when a hard-disk password is set. To unlock the hard disk
drive, enter the correct password.
34
IBM ThinkPad 755CX User's Guide
Using the ThinkPad Features Program
Using the ThinkPad Features Program
To install the ThinkPad
Features program:
Page 180.
ThinkPad Features is a program that allows you to select various
features for your computer. The following shows the structure of the
ThinkPad Features program:
ThinkPad Features
XX XXXXX
X XX XXX
Power
Alarm
Power Mode Device Power More...
Settings...
Display
Monitor
Suspend/Hibernation
/Resume Options
Device
Driver
Fuel
ThinkPad Setup
System Information
Personalization
Other Devices
IRQ/DMA/Memory
Assignment
The way you start the ThinkPad Features program depends on which
operating system is installed.
Chapter 3. Operating Your Computer
35
Using the ThinkPad Features Program
OS/2
WIN
Using the Program for OS/2 and Windows
When you use OS/2 or Windows, a graphical presentation is
available in the ThinkPad Features program.
Note:
The screen might be different from
the actual one.
ThinkPad Features
PC Card Director
Power
Display
Alarm
ThinkPad
Setup
?
Fuel
?
XX XXXXX
X XX XXX
Personalization
ThinkPad
Features Help
Docking
Control
Docking
Control Help
Hints and Tips
You also can use ThinkPad Features Program through the PS2
program from the DOS full-screen command prompt in OS/2 or
Windows. For more information, see “Using the PS2 Program” on
page 41.
A Help button is available on most menu screens. For additional
information on each menu item, click on this button.
36
IBM ThinkPad 755CX User's Guide
Using the ThinkPad Features Program
Power Menu
Power
When you select this icon, you can set power-saving options:
Power Mode for battery operation and AC Adapter operation.
You can select one of the following power modes:
Note:
* The values for both High
Performance mode and Automatic
mode are preset and cannot be
changed.
Power Mode
Power-Saving
Option
Standby timer
Suspend timer
Screen off
timer
HDD stop
timer
Processor
speed
High
Performance*
0
60 minutes
60 minutes
0
15 minutes
5 minutes
Your choice.
Your choice.
Your choice.
20 minutes
10 minutes
Your choice.
Maximum
Automatic
clock control
Your choice.
Automatic*
Customized
Customizing power mode
To customize the power mode, such as the processor speed,
select Settings.... The power mode settings window appears
on the screen. The values can be customized for each the
battery-powered operation and the AC Adapter operation.
Power for devices
When you do not use such internal devices as the serial port or
infrared port, you can save power by deleting the X in front of
the device list.
Suspend, hibernation, and
resume functions:
Page 50.
Suspend, hibernation, and resume options
You can select suspend, hibernation, or resume options by
clicking on the More... button.
Chapter 3. Operating Your Computer
37
Using the ThinkPad Features Program
Display Menu
Display
The display menu allows you to make selections for the computer
display.
Display devices
You can select the LCD, an external display, or both to use with
the computer.
Device driver
You can select display resolution and color depth. You can also
use the following function:
Virtual screen on the LCD and the external display: When
you are using Windows, the virtual screen function is
available. You can use it to display a part of the
high-resolution screen image that is produced by the
computer. Other parts can be seen by moving the screen
using the TrackPoint III or another pointing device.
Note:
When the color depth is set to
65 536 or 32 768, the available
virtual screen size is 800-by-600
resolution at maximum. To get a
virtual screen with a 1024-by-768
resolution, set the color depth to
256.
755CX SVGA model
1024x768
755CX VGA model
1024x768
800x600
640x480
Monitor
You can select the display type and refresh rate of the external
display.
For more information, see “Attaching an External Display” on
page 165.
Alarm Menu
Alarm
Note:
You can adjust the volume with the
volume control. See page 12.
38
IBM ThinkPad 755CX User's Guide
You can set the speaker to sound when the power status or the
power mode is changed, or when battery power is low. You can
also enable or disable the speaker indicator (see page 16) when the
speaker sounds.
Using the ThinkPad Features Program
ThinkPad Setup Menu
This menu allows you to view or set the following:
ThinkPad
Setup
System Info
This shows you the system specifications and assigned
resources (interrupt levels, DMA channel, and memory
assignment) in the system.
Keyboard/Pointing Device
This allows you to enable the TrackPoint III. It also enables the
sticky Fn key function, so Fn key functions are entered without
your pressing and holding the Fn key.
For Windows users: You can also select the repeat-action
speed of the keyboard and have a trailing cursor or select the
shape and color of the pointing cursor.
Parallel
This allows you to enable the parallel port, select the port
address (LPT1–LPT3), or set the direction of transfer and
operating mode and view the interrupt levels.
Note:
You cannot use more than two
serial devices at the same time.
Serial devices include a device
connected to the serial port, a
modem in the diskette drive
compartment, the infrared ports, the
Mwave modem/fax (available as an
option in some countries), and
PCMCIA modem cards.
Serial
This allows you to enable the serial port, select the port address
(COM1–COM4), and view the interrupt levels.
DSP
This allows you to enable the DSP device for the Mwave
functions, or view the I/O address, IRQ level, or DMA channel.
Infrared
This allows you to enable the infrared port or set the operating
mode.
Video Controller
This allows you to set the memory address for the video BIOS.
Option Devices
This allows you to set I/O address, IRQ level, DMA channel,
and memory address of the adapter information in the Dock I or
II or other options.
Chapter 3. Operating Your Computer
39
Using the ThinkPad Features Program
The Fuel-Gauge program shows you the following battery-power
information:
Fuel
Fuel-Gauge program:
Page 98.
Remaining power percentage
Current power mode
Discharge options
The Personalization Utility program allows you to display personal
data, such as your name and address, on the screen when the
computer is turned on. These appear only when a password is set.
Personalization
Personalization Utility
program:
Page 125.
The Docking Control Utility program allows you to attach the IBM
Dock II to the computer without turning off the power.
Docking
Control
Note:
For more information about the
Docking Control Utility program,
refer to the Dock II User's Guide.
40
IBM ThinkPad 755CX User's Guide
Using the ThinkPad Features Program
OS/2
DOS
WIN
Note:
To use the PS2 program in OS/2,
you need to install the program
using the same procedure as when
installing for DOS. See page 181.
Note:
The screen might be different from
the actual one.
Using the PS2 Program
To start the PS2 program, type PS2 or PS2 ? at the command
prompt; the press Enter. The following help screen appears:
C:\> PS2 ?
(C)Copyright IBM Corp. 1993,1995. All rights reserved.
US Government Users Restricted Rights - Use, duplication
or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.
Command Syntax:
PS2
[Parameter1] [Parameter2] [Parameter3]
Following are available [Parameter1].
For the complete command syntax, type 'PS2 ? [Parameter1]'.
1.Power Management related
PMode,
SErial,
DDC,
CARD,
DSP,
IR,
POwer,
LCd,
DISK,
SPeed,
STandby, DISCHARGE, DEFAULT, Cover,
You can select an item from the menu and follow the instructions on
the screen to set any of the features.
Using the Batch File
You also can specify features by entering appropriate commands, or
you can create a batch file and set your unique operational
environment with the commands.
Note:
Refer to the manuals supplied with
the operating system for more
information on batch files.
The following sample batch file would provide an operational
environment suitable for traveling, and could result in a
longer-battery operation time.
@Echo Off
Rem
Rem
SAMPLE: Set the parameters to provide maximum power utilization.
================================================================
PS2 PMode Custom
> Nul
PS2 LCd 3 minutes
> Nul
PS2 DISK 3 minutes
> Nul
PS2 POwer 5 minutes
> Nul
PS2 SPeed Fixed MIN
> Nul
PS2 IR OFf
> Nul
PS2 CARD OFf
> Nul
PS2 DDC OFf
> Nul
Chapter 3. Operating Your Computer
41
Using Easy-Setup
Using Easy-Setup
Warning:
Do not enter suspend mode when
using Easy-Setup.
The computer has a built-in system setup function called
Easy-Setup. Easy-Setup allows you to set the date and time,
passwords, the startup sequence of the drives, and various
hardware configurations, such as keyboard speed and serial- and
parallel-port addresses. Easy-Setup also runs the diagnostics.
Starting Easy-Setup
To start Easy-Setup, do the following:
Note:
You can change the screen color of
the Easy-Setup menu with
Ctrl+PgUp or Ctrl+PgDn. Use
Ctrl+Home to restore the original
screen color.
1 Turn off the computer.
2 Remove any diskette from the diskette drive.
3 Press and hold F1; then turn on the computer.
Hold F1
until the Easy-Setup menu appears.
Easy-Setup
Config
Date/Time Password
Start
Test
Restart
Selecting Easy-Setup Items
To select an item from the Easy-Setup menu, move the pointer with
a pointing device to the item and click on the item or use the
keyboard as follows:
Arrow keys (↑↓←→
): Highlight the item from the menu.
Spacebar: Selects the item.
Enter key: Enters the next menu, or saves the changes and
exits the menu.
Esc key: Returns to the previous menu, or cancels the
changes.
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IBM ThinkPad 755CX User's Guide
Using Easy-Setup
Config contains the following:
Config
Memory Keyboard
Serial
Parallel SystemBoard
Initialize
Exit
Memory shows the amount of installed memory and available
memory remaining.
Memory
Keyboard enables you to set the repeat-action (typematic) speed
and enables or disables the TrackPoint III.
Keyboard
Serial
Parallel
Serial enables you to select the port address for a serial device
connected to the serial port, or for the internal serial device in the
diskette-drive compartment.
Parallel enables you to select the port address for a device, such
as a printer, that is connected to the parallel connector. When you
select Bidirectional, the data transfer between the selected port
and the device is in both directions. When you select
Unidirectional, the data transfer is in only one direction: from the
computer to the device.
SystemBoard provides information about the installed system
board.
System
Board
Initialize sets all items in the Config menu to their original values.
Initialize
After verifying the selections, click on OK or press Enter. To cancel
the selections, press Esc.
Chapter 3. Operating Your Computer
43
Using Easy-Setup
Date/Time is used to set the current date and time.
1995 .03.31
Date/Time
23:59:59
Select any field (Year, Month, Date, Hour, Minute, or Second) with
the Arrow key or pointing device; then type or click on the
or
icon to change the setting. Clicking on the
or
icon changes
the setting more quickly.
After verifying the selection, click on OK or press Enter. To cancel
the setting, click on Cancel or press Esc.
Password is used to set:
Password
Power-on password
Hard-disk password
Supervisor password
Power-On
OK
Hard-Disk
Supervisor
Cancel
For more information about the passwords, see Chapter 5.
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IBM ThinkPad 755CX User's Guide
Using Easy-Setup
Start up is used to change the startup sequence of your computer.
1
2
3
Start
3
HDD-3
Note:
For more information about the
startup sequence, see “Using the
Selectable Drive-Startup Sequence”
on page 47.
4
HDD-4 PCMCIA
The HDD-1 icon represents the internal hard disk drive of the
computer. The other numbered HDD icons are the hard disk drives
of external devices. FDD-1 represents the first diskette drive found
during system startup. When no diskette drive is installed and the
attached expansion unit (Dock I or II) has a diskette drive, the
diskette drive in the Dock I or Dock II will be the first drive.
Select Test to test the computer hardware.
Test
Start
Note:
The FDD-1 and HDD-1 icons
represent the diskette drive and
hard disk drive of the computer,
respectively. Other numbered icons
are the diskette drive and hard disk
drives of external devices.
Restart
1
1
1
SystemBoard Memory Display HDD-1 FDD-1 PCMCIA-1 Parallel
2
Serial
DSP
CD-ROM
2
2
HDD-2 FDD-2 PCMCIA-2
For more information, see “Testing the Computer” on page 202.
Chapter 3. Operating Your Computer
45
Using Easy-Setup
Click on Restart to restart the computer after you have made your
selections. Then press Enter or click on OK.
Restart
46
IBM ThinkPad 755CX User's Guide
Using Easy-Setup
Using the Selectable Drive-Startup Sequence
Warning:
If you change your startup
sequence, you must be extremely
careful when you do write
operations (such as copying,
saving, or formatting). Your data
or programs can be overwritten if
you select the wrong drive.
Selectable drive startup (selectable boot) allows you to control the
startup sequence of the drives in your computer. The order in
which the computer searches the drives for your operating system is
the drive-startup sequence. If you are working with multiple
operating systems, you might want to change the drive-startup
sequence to load the operating system from the hard disk or the PC
Card without checking the diskette drive, or to do a remote program
load (RPL).
Changing the Startup Sequence
To change the startup sequence, do the following:
To start Easy-Setup:
Page 42.
1 Start Easy-Setup and select the Start up icon.
2 Move the cursor to the Reset icon; then press the
Spacebar.
The sequence is reset, and all available device icons appear
at the bottom of the screen. For the meaning of icons, see
page 45.
Note:
You cannot set a hard disk drive
before the PC Card in the startup
sequence.
3 Move the cursor to the icon of the first device for the
startup sequence; then press the Spacebar.
Repeat this step to set the other devices for the startup
sequence. You can set up to four devices.
4 Click on OK or press Enter to save the change.
Chapter 3. Operating Your Computer
47
Using the Fn Key Function
Using the Fn Key Function
The Fn key function allows you to change operational features
instantly. When you use the following functions, press and hold the
Fn key 1 ; then press the appropriate function key 2 .
Note:
To use the sticky Fn key function,
select Keyboard/Pointing Device
from the Setup menu of the
ThinkPad Features program window
or PS2 FNS E command.
Key Combination
Fn
+
F1
Fn
+
F2
Hints and Tips
Using Sticky Fn Key Function: Once you press the Fn key, you get the
same effect as when you press and hold the Fn key until you press any
function key.
Feature
Reserved
Meaning
—
Fuel-Gauge
program display on
or off
The Fuel-Gauge program must be activated before you can use this key
combination.
When the this key combination is pressed:
For OS/2 or Windows users: The window for the battery-power status
appears or disappears. Parameters for power status can be set.
Fn
+
F3
Fn
+
F4
Fn
+
F5
Fn
+
F6
Fn
+
F7
Standby mode
For DOS users: Power status information appears or disappears at the
top-right corner of the screen.
Places the computer in standby mode. For more information about this
mode, see page 52.
Suspend mode
Places the computer in suspend mode. For more information about this
mode, See page 53.
Reserved
—
Reserved
—
LCD/external
display switching
Displays the computer output in the following order when an external display
is attached.
External
Display
LCD
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IBM ThinkPad 755CX User's Guide
Both
Using the Fn Key Function
Key Combination
Fn
+
F8
Fn
+
F9
Fn
+
Fn
+
Feature
Reserved
Meaning
—
Reserved
—
Reserved
—
Power mode
switching
When this key combination is pressed during battery-power operation, the
power-management (power-saving) mode changes as follows. See page 37.
High
Auto
Customize
Hibernation mode
The AC mode is used when the AC Adapter is attached. The Fuel-Gauge
program displays the current-power option.
Places the computer in hibernation mode. See “Hibernation Mode” on
page 57 for more information.
Fn
+
Fn
+
PgUp
Dock I speaker
volume up
Increases the speaker volume of the Dock I attached to the computer.
Fn
+
PgDn
Dock I speaker
volume down
Decreases the speaker volume of the Dock I attached to the computer.
Chapter 3. Operating Your Computer
49
Using Power Management
Using Power Management
To use the ThinkPad
Features program:
Page 35.
Note:
When installing the operating
system, install the ThinkPad
Features program to use Power
Management.
To install the ThinkPad
Features program:
Page 180.
The computer supports the following power-saving modes as a
built-in power-saving functions:
Operation Mode
You can choose one of the following to operate your computer.
(See page 37 for more information.)
– High Performance
The computer performance is considered first, although
power is automatically saved.
– Automatic
The power-saving parameters are automatically set to save
as much power as possible.
– Customized
You can customize all parameters to save power.
Standby Mode
Enter standby mode for short idle times—for example, when you
are having a short conversation with someone. (See page 52
for more information.)
Suspend Mode
Enter suspend mode for short periods of time away from your
computer. (See page 53 for more information.)
Hibernation Mode
Enter hibernation mode when you leave your office and then
return the following day. (See page 57 for more information.)
In addition to these, you can use the resume function. When
resuming normal operation from one of the power-saving modes
such as standby mode, suspend mode, or hibernation mode, the
computer returns to where it was when it entered the mode.
Because the operating system is already loaded, the resume
function is faster than when turning on power.
A comparison of the power conserved and the time required to return
to operation mode is shown in the following figure:
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IBM ThinkPad 755CX User's Guide
Using Power Management
Power-savingmodes→
Time required
to return to
normal
operation.
Amount of
power
consumption.
Standby
Suspend
Hibernation
The following figure shows the operations required when the
computer moves from a power-off condition to an operational mode,
and vice versa. The battery shows the amount of battery power
used in each stage.
To set the timer:
Page 35.
Operation Mode
Power
Shutdown
Switch
High Performance
Fn + F11 Automatic
Customized
Fn key
Timer
Open LCD
Close Keyboard
Power
Switch
Power Switch
Fn+F12
Low Battery
Timer
Fn+F4
Timer
Low Battery
Close LCD
Open Keyboard
Fn + F3
Timer
Any key
Standby Mode
Fn + F4
Suspend Mode
Safe Suspend
Fn+F12
Timer
Low Battery
Timer
0%
Hibernation Mode
Power-off
Chapter 3. Operating Your Computer
51
Using Power Management
Standby Mode
In standby mode, the hard disk drive stops and the LCD turns off to
save power. When any key is pressed, the computer immediately
resumes normal operation.
The following shows what causes the computer to enter standby
mode and resume normal operation:
Fn key function:
Page 48.
ThinkPad Features program:
Page 35.
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IBM ThinkPad 755CX User's Guide
To Standby Mode
Fn+F3 key combination is
pressed.
No activity occurs during
the time specified by the
Standby timer of the
ThinkPad Features
program.
To Normal Operation
Any key is pressed.
Pointing device activity
occurs.
Using Power Management
Suspend Mode
In suspend mode, all tasks are stopped and stored in memory to
save power. When the computer resumes normal operation, the
tasks are automatically restored.
The following shows what causes the computer to enter suspend
mode and to resume normal operation:
Fn key function:
Page 48.
ThinkPad Features program:
Page 35.
PS2 command:
Page 41.
To Suspend Mode
The Fn+F4 key
combination is pressed.
The LCD is closed.
The PS2 command to
enter suspend mode is
used.
The suspend button is
pressed in the
Fuel-Gauge program.
No activity occurs during
the time specified by the
Suspend timer of the
ThinkPad Features
program.
A low-battery condition is
detected.
To Normal Operation
The Fn key is pressed.
Any key is pressed when
the AC Adapter is being
used.
The LCD is opened.
The PS2 command to
resume is used.
The Resume on timer
option is set in the
ThinkPad Features
program.
The ring indicator is
received through the
communication interface.
The keyboard is closed.
The keyboard is opened.
Chapter 3. Operating Your Computer
53
Using Power Management
The current status of the computer is shown by the following
indicators:
Indicators
Current Status
In suspend mode
Entering or resuming
suspend
Normal operation
Suspend Mode
Green
Blinking green
Off
Off
Power-On
Off
Green
Safe Suspend
Warning:
Do not move the computer when
it is entering safe suspend mode.
Note:
Before using safe suspend mode,
you need to create a hibernation
file. See page 59.
If battery power is exhausted during suspend mode, the indicated
status before entering suspend mode will be lost. To avoid this, you
can use safe suspend. In safe suspend mode, whenever the
computer enters suspend mode the current memory data is stored
on the hard disk, so that you can get the same status after
resuming normal operation. And if battery power is exhausted
during suspend mode, you can get the same status by turning on
the computer. To use this function, do the following:
ThinkPad Features program:
Page 35.
For OS/2 or Windows:
OS/2
WIN
1 Start the ThinkPad Features program.
2 Select Power; then select the More... button.
3 If a hibernation file has not been created, click the
Enable hibernation button and create the file on the
internal hard disk.
4 Click on the Safe suspend box.
5 Select the OK button.
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IBM ThinkPad 755CX User's Guide
Using Power Management
DOS
For DOS:
1 If a hibernation file has not been created on the hard
disk, type PS2 HFILE X; then press Enter to create a
hibernation file.
PS2 command:
Page 41.
2 Type PS2 SA E at the command prompt; then press
Enter to enter safe suspend mode.
Considerations for Suspend Mode
Consider the following before using suspend mode:
Attached devices, such as a printer or serial device, stop
running when the computer enters suspend mode. When
normal operation is resumed, the output can differ from what
you expect, because the device might be reset or lose its
configuration settings.
When a power-on or hard-disk password is set, you must enter
your password to resume normal operation.
The computer can enter suspend mode when used with the
following operating systems:
– DOS Version 7.0 or later
– OS/2 Version 2.11 or later
– Microsoft Windows Version 3.11 with DOS Version 7.0 or
later
Important
When you use Windows Version 3.11, ensure that Advanced
Power Management (APM) is installed according to the
instructions in “Microsoft Windows Version 3.11 or Later” on
page 177.
Note:
When the computer enters standby
mode, you will hear a beep that is
different from the one that sounds
when entering suspend mode.
When the computer is powered with ac power and is using one
of the following IBM PC Cards, it enters standby mode:
–
–
–
–
IBM
IBM
IBM
IBM
3270 Emulation Credit Card Adapter
5250 Emulation Credit Card Adapter
Token-Ring 16/4 Credit Card Adapter
Credit Card Adapter for Ethernet
When other PC Cards are used, all application programs stop,
and for some of these PC Cards the power to the PC Cards
might also turn off.
Chapter 3. Operating Your Computer
55
Using Power Management
When the computer is powered with battery power, it turns
power off to the PC Card, so the duration of suspend mode is
longer. When resuming normal operation, if the PC Card or
computer does not operate, restart the application or computer.
When the computer is using one of the following IBM modem
cards and detects an incoming call while in suspend mode, it
automatically resumes normal operation:
– IBM PCMCIA Data/FAX Modem
– IBM High Speed PCMCIA Data/FAX Modem
While the communication link is active, the computer will not
enter suspend mode.
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IBM ThinkPad 755CX User's Guide
Using Power Management
Hibernation Mode
Before using hibernation mode, you must create a hibernation file.
See page 59 for instructions.
Note:
Using the Dock I, Dock II or a
particular PC Card disables
hibernation mode.
During hibernation mode, all tasks are stopped, and memory data
and the current status of the computer are stored on the hard disk
drive; then the power is turned off. When power is turned on again,
the computer automatically restores the tasks and resumes normal
operation. No battery power is used when the computer is in
hibernation mode.
Note:
The time to enter or exit hibernation
mode depends on the size of
computer memory.
It takes approximately 10 seconds to enter hibernation mode, and
18 seconds to resume normal operation (with a base memory of
8MB). When the computer is entering hibernation mode, you
receive a screen message, the computer sounds one short beep,
and the suspend indicator blinks. You also will hear one short beep
when the hibernation process is completed.
Chapter 3. Operating Your Computer
57
Using Power Management
The following shows what causes the computer to enter hibernation
mode and to resume normal operation:
Fn key function:
Page 48.
ThinkPad Features program:
Page 35.
PS2 command:
Page 41.
To Hibernation Mode
The Fn+F12 key
combination is pressed.
The PS2 HIB command is
used.
The hibernation button is
pressed in the
Fuel-Gauge program.
The time specified by the
hibernate option after the
expiration of suspend
mode.
No activity occurs during
the time specified by the
Suspend timer of the
ThinkPad Features
program.
A low-battery condition is
detected.
The power switch is
pressed, when the
Hibernate by power
switch option is set.
58
IBM ThinkPad 755CX User's Guide
To Normal Operation
The power switch is
pressed.
Using Power Management
Creating the Hibernation File
Warning:
The hibernation file must not be
created in a compressed data
area of the hard disk or external
drive.
When installing the operating system, or if you have expanded the
computer memory, you must create a hibernation file on the hard
disk drive to use hibernation mode.
The size of the hibernation file will be greater than total memory.
For example, if base memory is 8MB and you have installed an
optional 4MB IC DRAM card, the hibernation file is 13MB: (8MB
plus 4MB) plus 1MB.
The following describes how to create a hibernation file for your
operating system.
For OS/2 or Windows:
OS/2
WIN
1. Turn on the computer and start the ThinkPad Features program.
2. Select Power; then select More....
To start the ThinkPad
Features Program:
Page 36.
3. Click on the Enable Hibernation button in the Suspend Options
menu.
4. Make sure the hard disk drive in the computer is selected; then
click on the OK button to create the hibernation file.
The computer can now enter hibernation mode.
DOS
PS2 command:
Page 41.
For DOS:
1. Turn on the computer.
2. Type PS2 HFILE C at the command prompt and press Enter.
C can be any drive letter up to Z.
The computer can now enter hibernation mode.
Chapter 3. Operating Your Computer
59
Using Power Management
Considerations for Hibernation Mode
Consider the following before using hibernation mode:
Do not run any tasks while the hibernation file is being created.
Create the hibernation file only on the hard disk drive installed
in the computer.
The hibernation file is hidden and cannot be accessed.
The computer uses battery power to enter hibernation mode.
Therefore, it reserves some battery power when it is set to enter
hibernation mode at a low-battery condition. This can cause the
battery operating time to be shorter than the time shown on
page 20 and 21.
When the computer is powered with ac power and is using one
of the following IBM PC Cards, it does not enter hibernation
mode:
–
–
–
–
–
–
IBM
IBM
IBM
IBM
IBM
IBM
PCMCIA Data/FAX Modem
High Speed PCMCIA Data/FAX Modem
3270 Emulation Credit Card Adapter
5250 Emulation Credit Card Adapter
Token-Ring 16/4 Credit Card Adapter
Credit Card Adapter for Ethernet
This prevents possible problems from occurring with
communication application programs after the computer returns
to normal operation.
Note:
If communication does not restart
automatically, remove the PC Card
and insert it again; then restart the
application or computer.
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IBM ThinkPad 755CX User's Guide
When the computer is powered with battery power, it turns
power off to the PC Card. When you resume normal operation,
if the PC Card or computer does not operate, restart the
application or computer.
Using PC Cards
Using PC Cards
To insert the PC Card:
Page 134.
Your computer has two slots that allow you to install one or two
credit-card-size PC Cards. With a PC Card, you can communicate
via a network, or you can store data.
About PC Cards
The slots conform to PCMCIA Standard Release 2.1 (or later), which
is defined as the hardware layer of the PCMCIA standard. Your
computer comes with the following basic set of device drivers for PC
Card support:
Socket Services Release 2.1
Card Services Release 2.1
PC Card Director
PC Card Director:
Page 62.
Card Services and Socket Services are the basic drivers required
for all PC Cards. The PC Card Director sets up the PC Cards so
they are ready to be used as soon as you insert them in the
PCMCIA slot of the computer.
The PCMCIA slots support Type I, Type II, and Type III PC Cards.
You can use two Type I or Type II PC Cards or one Type III PC
Card in the PCMCIA slots. However, because the Type III PC Card
is thicker than Type I or Type II PC Cards, you cannot use other
types of PC Cards when using the Type III PC Card. Ask your IBM
authorized reseller or IBM marketing representative for more
information about the different types of PC Cards.
For more information about PC Cards, see Appendix B.
Limitations of Operation during Suspend and Hibernation
Modes
Suspend mode:
Page 53.
Hibernation mode:
Page 57.
Some PC Cards can be installed or removed without turning off the
computer (refer to the instructions that came with the PC Card), but
you cannot remove or install PC Cards during suspend mode.
Some PC Card types do not support hibernation mode.
Chapter 3. Operating Your Computer
61
Using PC Cards
Using the PC Card Director Program
The PC Card Director is an advanced IBM program that makes it
easy to use PC Cards by:
Auto Configurator:
Page 231.
Turning on and setting up a PC Card when you plug it in (by
using Auto Configurator program).
Showing what types of PC Cards are in your computer.
Notifying you with a pop-up message, a beep, or icons
whenever a card is inserted or removed.
Allowing you to register an application program for a particular
PC Card and starting the program automatically when the card
is inserted.
To install PC Card Director:
Page 183.
PC Card Director is on the PCMCIA Features Diskette and must be
installed before you can use it.
PC Card Director requires the Socket Services and Card Services
drivers.
Note:
The PCMCIA.CRD file does not
always list the latest PC Cards. If
your PC Card is not listed, try using
it with PC Card Director anyway.
Some PC Cards come with their own drivers that will set the cards
up just as PC Card Director does. However, if these cards are
supported by PC Card Director, you will not need their drivers. The
supported PC Cards are listed in the PCMCIA.CRD file on the
PCMCIA Features Diskette.
If your PC Card is not supported by PC Card Director, you must
install the driver that came with your card. The card driver must be
compatible with PCMCIA Card Services Standard, Release 2.0 or
2.1. Follow the instructions in the card driver's manual to install the
driver.
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IBM ThinkPad 755CX User's Guide
Using PC Cards
Understanding the Meaning of Icons
The PC Card Director uses various icons to show you the status of
the PCMCIA slots and the type of PC Card installed.
A Help button is available on most PC Card Director menu screens.
To obtain additional information for each screen, click on this button.
Status Icons
Icon
DOS Message
Empty
Meaning
No PC Card is installed in the
slot.
—
A PC Card is installed.
Ready
The PC Card in the slot is ready
to be used.
Not Ready
The PC Card is not ready and
cannot be used.
Non Removal
The PC Card cannot be removed.
OK
Chapter 3. Operating Your Computer
63
Using PC Cards
Card-Type Icons
Icon
DOS Message
Memory
Meaning
Memory card
Hard Disk
Hard disk card
LAN
Communication card
Modem
Modem card
(Depends on
the type of
your PC Card.)
I/O card
Boot
DOS was booted from the PC
Card that is installed.
Boot
OS/2 was booted from the PC
Card that is installed.
DOS
OS2
64
IBM ThinkPad 755CX User's Guide
Using PC Cards
OS/2
Starting PC Card Director for OS/2:
Click on the PC Card Director icon on the OS/2 Desktop.
PC Card Director
The following screen appears. “No. 1” is for the upper PCMCIA
slot, and “No. 2” is for the lower slot.
Descriptions of the icons are on page 63.
PC Card Director
View Options
Help
PCMCIA Socket - Detail View
No.
Status
Card Type
Card Information
1
2
OK
X: XXXXX XXXXX, XXX XX-XX-XX XX
>
To view the details of a PC Card, select the slot with a pointing
device, or use the Arrow keys and press Enter.
Chapter 3. Operating Your Computer
65
Using PC Cards
The following choices appear in the View pull-down menu:
PC Card Director
Options Help
View
Details
PCMCIA Socket - Detail View
Icon
No.
Status
Card Type
Card Inform
Details shows the current status of the PCMCIA slots and
provides information about the installed PC Cards.
Icon shows the slot information with the slot number and the PC
Card type. You can minimize the screen and keep it on the
OS/2 Desktop to view the slot information.
PC Card Director
View Options Help
1
2
Modem
>
If you select Options, the following choices appear:
PC Card Director
View Options Help
Customize... PCMCIA Socket - Detail View
Register...
No. Status Card Type
Card Inform
Customize... sets beeps on or off or activates pop-up windows
when a PC Card is inserted or removed.
Register... registers, updates, or deletes the PCMCIA
application program installed for the PC Card.
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IBM ThinkPad 755CX User's Guide
Using PC Cards
Register Object
Select a card type
Memory
V
OK
Help
Object List
Drag and drop Workplace objects below.
IBM AntiVirus/2
Program
Launch
Remove
Launch...
Automatically as card is inserted,
Automatically as card is ready.
By manual operation.
After you register an application program, you can set it to start
automatically when you insert the PC Card by selecting
Automatically as card is inserted. You can register more than
one application program for a PC Card. When you insert the
card, the application programs are listed on the screen so you
can select the one you want.
Chapter 3. Operating Your Computer
67
Using PC Cards
To register a PCMCIA application program, do the following:
1. Select the type of PC Card on which the application program is
to run.
2. Type the application name in the Object List box or drag and
drop the icon of a program in the workplace of the Object List.
Register Object
Select a Card Type
Memory
OK
V
Help
Object List
Drag & Drop Workplace Object below.
Launch
Remove
Launch...
Automatically as Card is Ready.
Automatically as Card is Inserted.
By Manual Operation.
3. Select a choice from the Launch... box to run the application
program automatically or manually.
Help is available on most menu screens for additional information.
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IBM ThinkPad 755CX User's Guide
Using PC Cards
DOS
Starting PC Card Director for DOS
To start PC Card Director, type C:\THINKPAD\EZPLAY at the DOS
prompt; then press Enter. The following screen appears. “Socket
1” is for the upper PCMCIA slot, and “Socket 2” is for the lower one.
PC Card Director
(c) Copyright IBM Corp. 1995, Version x.xx
Card Services
DOS Card Services Driver, Version x.xx PCMCIA Card Services
Release
x.xx
Revision
x.xx
Socket Information
Socket
->
Status
1
Empty
2
Ready
Card Type
Memory
Card Information
x:xxxx xxxx, xxx xx-xx-xx xx
To view more information about an installed PC Card, highlight the
item with the Arrow keys (↑ , ↓ ); then press Enter.
Chapter 3. Operating Your Computer
69
Using PC Cards
Starting PC Card Director for Windows
WIN
Note:
PC Card Director for Windows runs
only in Enhanced mode of Windows
3.11 or later version.
Select PC Card Director in the ThinkPad window.
ThinkPad Features
PC Card Director
Power
Display
Alarm
ThinkPad
Setup
?
Fuel
?
XX XXXXX
X XX XXX
Personalization
ThinkPad
Features Help
Docking
Control
Docking
Control Help
The following screen appears. “No. 1” is for the upper PCMCIA
slot, and “No. 2” is for the lower one.
PC Card Director
Options
Help
PC Cards Summary
No. Status Card Type
1
2
Card Information
Empty
OK
Ready
Card Info...
X: XXXXX XXXXX, XXX XX-XX-XX XX
Memory
Appl. Register...
PC Card Director
Card Info... shows details of a PC Card installed in a PCMCIA
slot. To view information about a PC Card, highlight the item
with the Arrow keys (↑ , ↓ ) or pointing device; then click on this
button. You also can register a PC Card type, when a card type
appears as unknown.
Appl. Register... registers, changes, or deletes a PC Card
application program. An application can run automatically
according to the PC Card type, if you specify the Run Automatic
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IBM ThinkPad 755CX User's Guide
Using PC Cards
option. If you register more than one application for each type of
PC Card, select the application you want to run from the list that
appears when the PC Card is installed.
If you select Options from the menu bar, the following choices
appear:
Options
Help
Customize...
Register...
Customize... sets beeps on or off or activates pop-up windows
when the details of an installed PC Card change. It also sets
whether a single icon or multiple icons are used when the PC Card
Director screen is minimized. The following shows the two types of
minimized PC Card Director icons:
This icon temporarily changes when a PC
Card is removed or installed if the Pop up
Main Window option is not specified.
Single icon
PC Card Director
Multiple icons
1
These icons show the card status of both PC
Cards installed in the slots.
2
PC Card Director
Register...
The icon for each slot temporarily changes
when a PC Card is removed or inserted if
the Pop up Main Window option is not
specified.
does the following:
Register Applications registers, changes, or deletes an
application program according to the PC Card type, even when a
PC Card is not installed in the slot.
Change Card Type changes a registered PC Card type to
another type.
Help is available on most menu screens for additional information.
Chapter 3. Operating Your Computer
71
Communicating with the Infrared Port
Using the Infrared Communication Feature
Note:
When installing an operating
system, you must install the infrared
device driver to use the ThinkPad
mode.
To install infrared device
driver:
Page 196.
Notes:
Your computer is equipped with an infrared (IR) communication
feature that allows point-to-point communication with other ThinkPad
computers or systems equipped with an infrared port. The
computer has two infrared ports, one in the front of the computer
below the diskette drive and another on the rear of the computer.
The infrared feature supports three modes with the following
communication speed in bits per second (bps):
ThinkPad (1.15 Mbps)
Mbps: Million bits per second
Kbps: Kilobits per second
This mode is used when communicating with another 755
series computer with an infrared port or other systems
supporting ThinkPad mode.
Generic (up to 115 Kbps)
This mode is used when communicating with other IBM
ThinkPad computers, Hewlett-Packard** 100LX**, 200LX**,
Omnibook**, or other systems with infrared ports supporting
Generic mode.
Sharp (9600 bps)
This mode is used when communicating with the Sharp**
Wizard** or other systems with infrared ports supporting
Sharp mode.
The ThinkPad Features program contains a utility program that
enables the front or rear infrared port and the communication speed.
If you are using OS/2 or Windows: See page 39.
PS2 command:
Page 41.
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IBM ThinkPad 755CX User's Guide
If you are using DOS: Type PS2 ? IR at the command prompt;
then press Enter for more information.
Communicating with the Infrared Port
During communication with rear infrared ports, the infrared ports
must face directly with each other at a communicating distance.
It is recommended that the communicating ThinkPad computers
use their rear infrared port to communicate with each other.
When communicating between a front infrared port and an
infrared port on another computer, the infrared ports on the
computers must face directly each other at a communicating
distance.
Chapter 3. Operating Your Computer
73
Communicating with the Infrared Port
Communication can be affected by the light from the LCD of the
computer. To avoid this, open the LCD of the computer to a wide
angle:
Side View
Considerations for Communication
Consider the following when communicating with the infrared ports.
You need to run the same communication application to
communicate between your computer and the other computer or
device. Refer to the application manuals for more information.
Run only one application at a time to communicate with the
infrared ports.
When using applications that use a conventional serial port and
serial cable to exchange data, your computer infrared ports are
used as a replacement for the serial port and cable. In this
case, the ThinkPad mode cannot be used.
The communicating distance might be less if:
– The other system is not the same model as your computer.
– There is interference from the ambient light. It is
recommended not to use infrared communication during
bright sunshine or artificial light conditions.
– The infrared port is not directly facing the other
communicating port.
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IBM ThinkPad 755CX User's Guide
Using the Mwave DSP Audio Features
Using the Mwave DSP Features
Note:
In some countries, the Mwave
telephony functions are available
only after the DAA/Telephony Kit
option is installed.
The computer provides an Mwave system, which is based on the
digital signal processor (DSP). It gives you the best performance
when you use it for audio and telephony functions, and it supports a
more natural way of communicating with your computer.
The Mwave DSP system supports a full complement of audio and
telephony functions including the following:
Note:
You can use an electric condenser
microphone (with battery) for sound
recording.
Note:
For more information about MIDI,
see “Mwave MIDI Overview” on
page 244.
Audio functions:
– Supports the wave audio record and playback up to 16-bit,
stereo and 44 kHz sampling
– Provides a high-quality MIDI wave table synthesizer with
128 instruments and up to 32 voices
– Supports DOS games by using the Sound Blaster**
interface
Telephony functions:
–
–
–
–
Supports
Supports
Supports
Supports
data modem up to 14 400 bps
fax modem up to 14 400 bps
speaker phone function
telephone answering machine function
Chapter 3. Operating Your Computer
75
Using the Mwave DSP Audio Features
Note:
In some countries, the Mwave
telephony functions are available
after the DAA/Telephony Kit option
is installed.
The following shows the connection between the computer and the
external cables or devices:
Microphone/Line-in
Jack
Modem/Fax Port
Headphone
Jack
Headphone
Jack
Microphone/Line-in
Jack
Modem/Fax Port
When the DAA /Telephony Option Kit is installed:
Microphone/Line-in
Jack
Modem/Fax Port
Headset
Note:
The headset is available as an option
in some countries.
76
IBM ThinkPad 755CX User's Guide
Headphone
Jack
Data Access
Arrangement
Using the Mwave DSP Audio Features
To install the Mwave DSP
support software:
Page 192.
The Mwave DSP supports the following functions for each operating
system.
For OS/2:
OS/2
–
–
–
–
DOS
Wave audio record and playback
MIDI synthesizer
Sound Blaster support in the DOS session
Data modem
For DOS:
– Sound Blaster support
– Data modem
For Windows:
WIN
–
–
–
–
–
–
–
Wave audio record and playback
MIDI synthesizer
Sound Blaster support in the DOS session
Data modem
Fax modem
Speaker phone
Telephone answering machine
Chapter 3. Operating Your Computer
77
Using the Mwave DSP Audio Features
Using the Audio Function
Use the Mwave audio functions according to your operating system.
OS/2
For OS/2
The Mwave feature supports the audio function in the OS/2
environment through Multimedia Presentation Manager/2 (MMPM/2).
To use the Mwave audio functions with OS/2, refer to the MMPM/2
manuals.
For Your Information
To play the audio files in the MMPM/2 environment:
When you play the wave audio files, select the Digital
Audio icon.
When you play the MIDI sequencer files, select the MIDI
icon.
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IBM ThinkPad 755CX User's Guide
Using the Mwave DSP Audio Features
DOS
For DOS
The Mwave feature supports the audio for DOS games through the
Sound Blaster support.
To enable Sound Blaster support for DOS games:
Type MWGAMES ON at the DOS prompt; then press
Enter.
Note:
If you have exited Windows and
returned to DOS, you might have to
run MWGAMES ON again to enable
the Sound Blaster support.
To disable the Sound Blaster support for DOS games:
Type MWGAMES OFF at the DOS prompt; then press
Enter.
Creating a Boot Diskette
To have enough memory for your games, you should make a boot
diskette before starting the DOS games. To make a boot diskette,
do the following:
1. Turn on the computer and start DOS.
2. Insert a blank diskette into the diskette drive.
3. Type MAKEBOOT at the DOS prompt; then press Enter.
A boot diskette has started to be created. Before starting your
games, restart your computer with this boot diskette inserted
into the diskette drive.
Some sample files, such as CONFIG.SYS file, will be created on the
boot diskette. You might need to modify these files by referring to
the manuals that came with your game.
Default Values for DOS Games Audio
Most games automatically determine the I/O address, interrupt level
(IRQ), and DMA channel settings for the audio for DOS games. If
the game asks for this information, specify the default settings of the
Sound Blaster as follows:
I/O Address
Interrupt Level (IRQ)
DMA Channel
PS2 command:
Page 41.
ThinkPad Features setup
menu:
Page 39.
220
5
1
If you need to change these settings, do the following:
For DOS, use the PS2 command (PS2 SB command).
For the DOS session of OS/2 and Windows, select DSP from
the ThinkPad Setup window.
Chapter 3. Operating Your Computer
79
Using the Mwave DSP Audio Features
For Windows or WIN-OS/2
WIN
Note:
To use the Mwave audio features in
WIN-OS/2, install the Mwave DSP
support software for Windows in the
full-screen WIN-OS/2 session.
To use Mwave audio functions in Windows or WIN-OS/2,
double-click on the Mwave ThinkPad icon in the Windows Program
Manager.
A window similar to the following appears:
Mwave ThinkPad
To install Mwave support
software:
Page 195.
FAX
Modem 14400
Country
Selection
Discriminator
Modem
Command
Reference
MIDI
Recorder
Select
Synthesizer
Audio Control
View
Connectors
Record and Playback the Wave Audio Files
Recorder
When you double-click on the Recorder icon, the following window
appears:
Mwave Recorder
File Edit Options Help
Mono 11.025 kHz 8 Bit
Position: 00:00.00
Marker A
Record
Clear A
0 bytes
Length: 00:00.00
Marker B
Play Rewind Fast-F
Clear B
Stop
This window allows you to record and playback the wave audio files.
Note:
You can use an electric condenser
microphone (with battery) for sound
recording.
80
IBM ThinkPad 755CX User's Guide
This window is similar to the Windows Sound Recorder, which
provides wave recording and playback functions; however, this
window has additional features for controlling the record quality and
file size.
Using the Mwave DSP Audio Features
Audio Control
Audio Control
When you double-click on the Audio Control icon, the following
window appears:
Mwave Audio Control
Record Control
Level
Source
Output Control
MIDI Synth Wave Audio
Aux
Master
Mic
Line
CD+Line
Audio
L
Options..
R
Mute
L
R
Mute
L
R
Mute
L
R
L
Mute
R
Mute
This window allows you to control the audio volume as follows:
Record control
This section enables you to select which source you want to
use, adjust the record level, monitor the input signal, and select
an options menu for additional control.
Output control
This section allows you to adjust the balance and sound levels,
and control the mute. And, it can be considered a stereo
amplifier with three input signals, controls to mix the input
signals, and a volume control for the output.
Audio button
This is used to enable the following audio features:
– Audio/Image Synch in the Options menu
– Aux Source
Important
Disable the Audio button before you use a speaker phone
application.
If the Audio button is enabled, the speaker phone
application does not operate correctly and displays an error
message on the screen.
Chapter 3. Operating Your Computer
81
Using the Mwave DSP Audio Features
Note:
Selecting the Audio/Image Synch
on the Options menu improves the
response speed; however, the
increase in DSP resources can
effect your ability to concurrently
use some Mwave applications.
Note:
If you enable Aux Source, the
computer will consume more battery
power. Disable Aux Source when
you do not use it.
Options button
– Audio Mode
If you are using some applications with sounds and
animation (for example, games or screen saver programs),
try this option to make the application work more quickly.
– Aux Source
Select the source you want to listen to by the computer
speaker or headphones.
Playing the MIDI Sequencer Files
Note:
When you play the MIDI files in the
WIN-OS/2 environment, see
“Considerations for the WIN-OS/2
Environment” on page 83.
To play the MIDI sequencer files in Windows, use the Windows
Media Player as follows:
1 Start Windows; then open the Accessories group.
2 Double-click on the Media Player icon.
3 When the Media Player window appears, select the
Device on the menu bar; then select MIDI Sequencer...
from the pull-down menu.
Media Player
File Device Scale Help
Sound...
MIDI Sequencer...
4 Click on the File on the menu bar; then select Open...
from the pull-down menu.
5 Highlight your favorite MIDI file with your pointing
device; then click on OK.
6 To begin playing the MIDI file, click on the Play (
button.
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IBM ThinkPad 755CX User's Guide
)
Using the Mwave DSP Audio Features
Select Synthesizer
Note:
When you use wave audio and Aux
at the same time, select 24 voices
(the default value).
MIDI
When you select the
icon in the Mwave ThinkPad window,
you can change the number of voices supported by the MIDI
synthesizer.
Sound Blaster support
Note:
Volume of the Sound Blaster sound
can be controlled by using the
following key combinations:
Ctrl+Alt+U (volume up) and
Ctrl+Alt+D (volume down).
For Windows, Mwave supports the Sound Blaster support in a DOS
session. It is not necessary to type MWGAMES ON to enable the
support, this is done automatically. Simply open a DOS session
and start the game.
Considerations for the WIN-OS/2 Environment
Note:
When you use the WIN-OS/2
environment, see “For Windows or
WIN-OS/2” on page 80.
The following are considerations when playing MIDI files in the
WIN-OS/2 environment.
To play MIDI files in the WIN-OS/2 environment from the OS/2
Desktop, the Audio Mode in the Mwave Audio Options menu
must be set to Normal (not Audio/Image Synch).
The MWS.EXE program must be running in the same session
as the program that runs the MIDI file. If you use multiple
WIN-OS/2 sessions, MWS.EXE must be started in each
session. To run MWS.EXE, migrate it to the OS/2 Desktop and
start it before starting the MIDI application programs. To
migrate MWS.EXE to the OS/2 Desktop, refer to the OS/2
manuals.
Chapter 3. Operating Your Computer
83
Using the Mwave DSP Telephony Features
Using the Telephony Function
In some countries, the Mwave telephony functions are available after
the DAA/Telephony Kit option is installed. To install DAA/Telephony
Kit on the computer, see “Installing the DAA/Telephony Kit” on
page 155 and the documentation that came with the option.
Connecting the Telephone Cable
To use the telephony functions, you need to connect a telephone
line to your computer.
DANGER
To avoid shock hazard, do not connect the telephone
cable to or disconnect it from the telephone outlet on
the wall during electrical storms.
Note:
If you use both the computer and a
telephone with one telephone cable,
use the wallet supplied with your
computer.
When your computer has a modem/fax port with a square
receptacle, connect the connector 1 of the ferrite-core end of the
telephone cable to the modem/fax port; then connect the other end
2 to the telephone outlet on the wall.
Note:
When you use the DAA/Telephony
Kit (available as an option), see
page 158.
Core
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IBM ThinkPad 755CX User's Guide
Using the Mwave DSP Telephony Features
Using the Mwave Modem
The Mwave data modem can be used with the Windows terminal
emulator to access your favorite bulletin board or online system
(PRODIGY**, CompuServe**, America Online**, or other online
systems).
Important
Before you start the communication by using your communication
program, start the Mwave modem.
For OS/2 and Windows
OS/2
WIN
To start the Mwave modem, do the following:
1 Select the following according to your operating system:
For OS/2, open the Mwave for OS/2 folder on the
OS/2 Desktop.
For Windows, open the Mwave ThinkPad window.
Note:
The screen might be different from
the actual one.
The following screen appears:
Mwave ThinkPad
FAX
Modem 14400
Discriminator
Country
Selection
Modem
Command
Reference
MIDI
Recorder
Audio Control
Select
Synthesizer
View
Connectors
Chapter 3. Operating Your Computer
85
Using the Mwave DSP Telephony Features
2 Double-click on the Modem 14400 icon.
The Mwave modem starts automatically, and the following
modem window appears:
Mwave Modem 14400
Actions
Help
Ready
MR
DTR
SD
RD
OH
CD
AA
HS
3 Start your communication program.
Stopping the Modem:
When you finish using the communication programs, turn off the
modem to free the Mwave DSP resources for other functions. To
turn off the modem, do the following:
1 If the modem window is minimized, double-click on the
icon to maximize it.
2 Select Close from the window pull-down menu.
DOS
For DOS
To start the Mwave modem, do the following:
Type MWMODEM ON at the DOS prompt; then press
Enter.
Stopping the Modem:
When you finish using the communication programs, turn off the
modem to free the Mwave DSP resources for other functions. To
turn off the modem:
Type MWMODEM OFF at the DOS prompt; then press
Enter.
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IBM ThinkPad 755CX User's Guide
Using the Mwave DSP Telephony Features
Mwave Data Modem
Modem 14400
The Mwave telephony features support direct attachment to the
public switched telephone network. The Mwave data modem
supports the standard COM port interface and can be used with the
communication application programs that use the Hayes** AT
command set.
The Mwave data modem provides the following features:
Standard asynchronous COM port interface (NS16550A UART
compatible) operation
Bell**–103/212A, CCITT–V.21/V.22, V.22bis protocols with data
from 50 to 2400 bps
CCITT–V.32 protocols with data rates of 4800, 9600 uncoded,
and 9600 bps Trellis coded (optional)
CCITT–V.32bis protocols with data rates of 4800, 7200, 9600,
12 000, and 14 400 bps (optional)
Hayes AT command set compatibility
Call progress monitor
Automatic dialing
Dual-tone modulation frequency (DTMF) and Pulse dialing
Asynchronous error-recovery protocol
Error correction via MicroCom** Network Protocol (MNP**)
classes 1–4
MNP class 5 for up to 2x data compression
Functional upgrades via software
CCITT V.42bis for up to 4x data compression
Chapter 3. Operating Your Computer
87
Using the Mwave DSP Telephony Features
Using the Country Selection
Important
Country Selection
Note:
In some countries, the Mwave
telephony functions are available
after the DAA/Telephony Kit option
is installed.
FAX
Discriminator
88
IBM ThinkPad 755CX User's Guide
Each country has restrictions to communicate when using
telephone lines. Use this window whenever you travel to other
countries.
The Country Selection window allows you to change the country
name currently supported by the Mwave telephony features. When
you travel to other countries and use the Mwave telephony function,
you need to change the country name from the country list in this
window.
Mwave Call Discriminator
The Mwave Call Discriminator provides voice and fax discrimination
by monitoring incoming calls for fax signal characteristics. This
feature automatically starts a fax, speaker phone, or answering
machine application programs.
Using the Mwave DSP Telephony Features
Mwave Fax Modem
The Mwave telephony features offer you the following fax functions:
Call progress monitor
Automatic-dialing feature
Support for a Windows MCI** FAX application interface
Use of direct memory access (DMA) instead of a COM port to
increase performance
DTMF and pulse dialing
G3 transfers
T.4/T.30 operations
V.27ter — 2400/4800 bps send/receive
V.29 — 7200/9600 bps send/receive
V.17 — 14400/14400 bps send/receive
Chapter 3. Operating Your Computer
89
Using the Mwave DSP Telephony Features
Mwave Telephone Answering Machine
Note:
When you use the telephone
answering machine function, refer to
the manual that came with the
application program package.
The Mwave telephony features allow you to use the computer as a
telephone answering machine as follows:
Record greetings and messages through the microphone
Play back greetings and messages through the speaker or
headphones
Play back greetings and messages to a remote telephone with
password
Use a full-duplex speaker phone with the microphone and
speaker
Record multiple greetings
Log both incoming and outgoing phone calls
Start recording your greeting after being alerted by a beep
Alert your caller with a beep to start recording a message
Place the phone on or off hook and dial phone numbers
Redial from the message log and from the keyboard
Use both tone (DTMF) and pulse dialing from the keyboard
Maintain a log of incoming and outgoing phone calls and
messages
Use voice compression to minimize disk space for stored
greetings and messages
Use a Windows MCI Telephony application program interface
Use a high-performance DMA interface
Speed up or slow down played messages without affecting their
pitch (TDHS)
Detect DTMF digits received from the phone line
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IBM ThinkPad 755CX User's Guide
Chapter 4. Using Battery Power
This chapter provides information about battery-pack operations.
Operating Time with the Battery Pack . . . . . . . . . . . .
Charging the Battery Pack
. . . . . . . . . . . . . . . . . .
Charging with the AC Adapter . . . . . . . . . . . . . . .
Charging with the Travel Quick Charger . . . . . . . . .
Replacing the Battery Pack . . . . . . . . . . . . . . . . . .
Monitoring the Battery-Power Status . . . . . . . . . . . . .
Using the Battery-Power Status Indicator . . . . . . . .
Low-Battery Condition . . . . . . . . . . . . . . . . . .
Using the Fuel-Gauge Program . . . . . . . . . . . . . .
Fuel-Gauge Program for OS/2 and Windows
. . . .
Discharging the Battery Pack for OS/2 and Windows
Fuel-Gauge Program for DOS . . . . . . . . . . . . .
Discharging the Battery Pack for DOS . . . . . . . .
Preserving Battery-Pack Life . . . . . . . . . . . . . . . . .
Maximizing Battery-Powered Operation . . . . . . . . . . .
. . . . . . . . . .
Using Advanced Power Management
Decreasing LCD Brightness . . . . . . . . . . . . . . . .
Using Power-Saving Modes . . . . . . . . . . . . . . . .
Using Power-Saving Options . . . . . . . . . . . . . .
Copyright IBM Corp. 1995
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91
Battery-Powered Operation
Operating Time with the Battery Pack
The battery pack is an internal power source for the computer.
Note:
* The operating time depends on
the options used with the computer,
the frequency of key input,
applications, and the configuration
of the system, so it might be shorter
or longer than the stated time.
The following tables show the operating times of the computer with
a fully charged battery pack.
When you use the lithium ion battery pack:
Model
755CX SVGA model
755CX VGA model
Battery Operating Time
3.0 — 9.0 hours *
3.2 — 10.0 hours *
When you use the NiMH battery pack:
Model
755CX SVGA model
755CX VGA model
Battery Operating Time
2.4 — 7.0 hours *
2.6 — 8.0 hours *
Charging the Battery Pack
Note:
While you operate your computer,
the NiMH battery pack cannot be
charged with the optional Car
Battery Adapter.
You can charge the battery pack with either the AC Adapter or the
Travel Quick Charger (available as an option). You must charge the
battery pack when any of the following conditions exists:
You are setting up your computer.
A new battery pack was purchased.
The battery status indicator
(orange) stays on.
The battery status indicator
(orange) blinks for less than 1
minute; then the suspend mode indicator
92
IBM ThinkPad 755CX User's Guide
turns on.
Battery-Powered Operation
Charging with the AC Adapter
The following procedure describes how to recharge the battery pack
with the AC Adapter when the computer is turned off.
Note:
Make sure the locking lever for the
hard disk drive is unlocked.
1 Turn off the computer and open the keyboard.
Note:
When you use the NiMH battery
pack, make sure the storage switch
is set to the on position ( | ).
2 Install the new or discharged battery pack into the
computer.
Storage switch position on
the NiMH battery pack:
Page 21.
Notes:
When you charge the lithium ion
battery pack, its temperature
must be at least 10°C (50°F).
When the AC Adapter is
connected, and the remaining
power of the installed battery
pack is less than a certain
amount, discharging and then
charging of the battery pack
starts automatically.
3 Connect the AC Adapter to the computer.
The system-status indicators show the following:
Indicator
Color
Battery
Charging
On
(green)
Blinking
(green)
Battery
Power
Status
Other
indicators
On
(yellow)
Off (blank)
Meaning
The battery pack is being charged. This
indicator turns off when the battery is
fully charged.
The battery pack is being discharged
before charged.
The battery pack is being charged.
—
Chapter 4. Using Battery Power
93
Battery-Powered Operation
The following tables show the approximate charging times for the
battery pack.
When you use the lithium ion battery pack:
Conditions
Operational charging
Power-off charging
Suspend-mode charging
Charging Time
2.0–2.5 hours
1.5–2.0 hours
1.5–2.0 hours
When you use the NiMH battery pack:
Conditions
Operational charging
Power-off charging
Suspend-mode charging
To discharge the battery:
Page 98.
Charging Time
1.7 hours
1.2 hours
1.2 hours
If the NiMH battery pack is new or has not been used for a long
period of time, it will not reach full charge with only a single
charging. You must discharge and recharge it from three to six
times to maximize battery operating time.
Charging with the Travel Quick Charger
You can charge the battery pack with the Travel Quick Charger
(available as an option). For the charging procedure, refer to the
instructions supplied with the Travel Quick Charger.
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IBM ThinkPad 755CX User's Guide
Replacing the Battery Pack
Replacing the Battery Pack
Warning:
If you are using PC Cards, either
connect the AC Adapter, or stop
the PC Card application and
remove the PC Cards before
doing these steps.
Note:
Make sure the locking lever for the
hard disk drive is unlocked.
A spare battery pack is available as an option. Replace the current
battery pack when its power becomes low.
The battery pack can be replaced with computer power on or off.
To replace the battery pack without turning off the computer, do the
following:
1 Open the LCD; then open the keyboard.
The computer
automatically enters suspend mode and:
One beep is heard.
The suspend indicator
blinks; then glows steadily.
2 When the computer has entered suspend mode, pull the
battery pack toward the front of the computer; then
remove it.
2
1
Note:
If the computer does not resume
normal operation, press the Fn key.
3 Quickly install a fully charged battery pack.
4 Close the keyboard.
The computer resumes normal operation.
Chapter 4. Using Battery Power
95
Using the Battery-Power Status Indicator
Monitoring the Battery-Power Status
You can determine the battery condition through the battery-power
status indicator and the Fuel-Gauge program.
Using the Battery-Power Status Indicator
Fuel-Gauge program:
Page 98.
Compare the battery-power status indicator
with the status in
the following table to determine the battery condition.
Status
Green
Yellow
Orange
Blinking
orange
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IBM ThinkPad 755CX User's Guide
Condition
Fully charged.
Usable.
Some power
remains.
You will hear
three beeps
when the
indicator turns
orange.
Almost
discharged
(low-battery).
See “Low-Battery
Condition” on
page 97.
Action Required
Continue your work.
The AC Adapter should be connected
to the computer to charge the battery
pack.
Within 1 minute, either:
Connect the AC Adapter to the
computer; leave the battery pack
installed, or
Replace the battery pack with a
fully charged spare (see
“Replacing the Battery Pack” on
page 95).
Using the Battery-Power Status Indicator
Status
Off
Condition
The battery
pack is not
installed.
The
computer is
turned off.
The
computer is
in suspend
mode when
the AC
Adapter is
not
connected.
Action Required
You should take the necessary
actions when the blinking orange
condition occurs, before the computer
enters suspend mode because of a
low-battery condition.
If suspend mode is caused by a
low-battery condition, data in memory
can be lost. Take either of the
following actions immediately:
To continue your work with the
AC Adapter:
1. Connect the AC Adapter to
the computer.
2. Press the Fn key.
To continue your work with a fully
charged battery pack:
1. Connect the AC Adapter to
the computer.
2. Replace the battery pack with
a fully charged one.
3. Press the Fn key.
4. Disconnect the AC Adapter
from the computer.
Low-Battery Condition
Warning:
Do not leave the computer in this
condition for an extended period
of time. Data in memory will be
lost.
When the battery pack is low in power, the computer sounds three
consecutive beeps, and the battery-power status indicator starts
blinking. The battery pack needs to be charged immediately. You
must take the actions described under the “Blinking orange” status
on page 96. If the actions are not taken within 1 minute, the
computer will enter suspend mode.
Chapter 4. Using Battery Power
97
Using the Fuel-Gauge Program
Using the Fuel-Gauge Program
Note:
When you install an operating
system, you must also install the
ThinkPad Features program before
you can use the Fuel-Gauge
program.
To install the ThinkPad
Features program:
Page 180.
The Fuel-Gauge program displays the battery-pack condition on the
screen.
The Fuel-Gauge program appears on the screen with the following
information about the battery pack:
Power mode
Battery status
Suspend or hibernation options
Discharge option
Refer to the Fuel-Gauge program instructions that are appropriate
for your operating system.
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IBM ThinkPad 755CX User's Guide
Using the Fuel-Gauge Program
OS/2
WIN
Notes:
Fuel-Gauge Program for OS/2 and Windows
When you press the Fn+F2 key combination with OS/2 or Windows,
the Fuel-Gauge program appears, as shown in the following
illustrations:
When the AC Adapter is connected:
1. The power source (AC Adapter
or battery) and power mode
alternately appear when the
program is minimized:
Minimized
Size
Maximized Size
Power source
AC AC Adapter
BT Battery
Power mode
HI High Performance
AU Automatic
CU Customized
2. “Duration of Remaining Power”
does not appear when the AC
Adapter is connected.
Fuel
When operated with battery:
Maximized Size
Minimized Size
70 %
[1:30]
Chapter 4. Using Battery Power
99
Using the Fuel-Gauge Program
Discharging the Battery Pack for OS/2 and Windows
Note:
The battery charging indicator starts
blinking when discharging starts.
Power-on password:
Page 110.
When the battery pack needs to be discharged, the computer
prompts you with a message. To discharge the battery, connect the
AC Adapter to the computer and click on the Discharge button ( )
on the Fuel-Gauge program screen. The discharge-in-progress
symbol ( ) appears above the gauge symbol, and the Charge
button ( ) appears in place of the Discharge button.
You can use the computer while the battery pack is discharging;
however, do not enter suspend mode or turn off the computer until
the discharge is complete.
Hints and Tips
If you have to leave the computer while the battery pack is
discharging, you can use the power-on password to secure the
computer. Close the LCD; then open it and leave the computer
at the power-on password prompt while you are away.
When the battery pack is completely discharged, charging starts
automatically.
To cancel discharging, click on the Charge button (
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IBM ThinkPad 755CX User's Guide
).
Using the Fuel-Gauge Program
DOS
Fuel-Gauge Program for DOS
When you press the Fn+F2 key combination with DOS, the
Fuel-Gauge program appears at the top-right corner of the screen
as shown in the following.
When the AC Adapter is connected:
When the AC Adapter is connected to the computer, the following
messages alternately appear:
Power source
– AC Charge: charging
battery pack.
AC Charge
– AC Discharge:
discharging battery
pack.
– AC: battery pack is fully
charged. (Neither
charging nor
discharging.)
Power mode
– High
(for High Performance
mode)
High
– Auto
(for Automatic mode)
– Custom
(for Customized mode)
Percentage of charging
completed
6 %
Chapter 4. Using Battery Power
101
Using the Fuel-Gauge Program
When operated with battery:
When the computer is operating with battery power, the following
messages alternately appear:
Power mode:
Page 37.
Power mode
– High
(for High Performance
mode)
– Auto
(for Automatic mode)
– Customized
(for Customized mode)
Custom
Remaining Power
– Percentage of
remaining power
– Duration of remaining
power
5 % (1:4 )
Discharging the Battery Pack for DOS
Note:
The battery charging indicator starts
blinking when discharging starts.
When the AC Adapter is being used and the battery pack needs to
be discharged, the computer prompts you with an asterisk (*) next
to the fuel-gauge message.
AC Charge
When you see this message, enter the following command to
discharge the battery pack:
PS2 DISCHARGE E
The battery pack starts to discharge. When the discharge is
complete, recharging starts automatically.
To cancel discharging, enter PS2 DISCHARGE D.
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IBM ThinkPad 755CX User's Guide
Preserving Battery-Pack Life
Preserving Battery-Pack Life
To preserve the life of the battery pack:
Do not charge it until all of its power is used.
Once you have started charging the battery pack, do not use it
until it is fully charged.
Turn off the computer whenever it is not in use.
Warning:
When you use the NiMH battery pack, make sure the battery pack
power is completely used before you recharge it. Recharging a
battery pack that is not completely discharged can shorten battery life.
When you use the NiMH battery pack, discharge the battery
pack occasionally by using the Fuel-Gauge program.
Chapter 4. Using Battery Power
103
Maximizing the Battery-Powered Operation
Maximizing Battery-Powered Operation
To save battery power effectively:
Use Advanced Power Management (APM)
Decrease the LCD brightness
Use power-saving modes
Use power-saving options
Using Advanced Power Management
Note:
If you have purchased the computer
with a preinstalled operating system,
the APM is already installed
correctly.
The computer has power-management functions built-in. No special
power-management drivers have to be installed before you use the
computer. However, the computer is able to conserve more power
when APM is used.
APM allows you to reduce power consumption when your
applications and devices are idle. Each operating system comes
with its own APM.
OS/2
DOS
When you use OS/2 with your computer, APM is automatically
installed when the installation program detects that your
computer has the power-management function.
When you use DOS with your computer, APM is automatically
installed when the installation program detects that your
computer has the power-management function. To verify that
the computer has APM installed correctly, type power at the
command prompt and press Enter. If a screen similar to the
following appears, APM is successfully installed.
Power Management Status
----------------------Setting = ADV: REG
CPU: idle 32% of time.
AC Line Status : OFFLINE
Battery status : High
If such a screen does not appear, add the following line to your
CONFIG.SYS file, using a text editor:
DEVICE=C:\DOS\POWER.EXE
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IBM ThinkPad 755CX User's Guide
Maximizing the Battery-Powered Operation
WIN
When you use Windows, do the following to check and install
APM for Windows:
1. Start the system. Make sure that the current directory has
Windows (usually C:\WINDOWS>).
2. Type SETUP at the command prompt and press Enter.
The following screen appears.
Windows Setup
=============
If your computer or network appears on the Hardware Compatibility List
with an asterisk next to it, press F1 before continuing.
System Information
Computer:
MS-DOS System
Display:
WD9 C24 64 x48 256 colors small fonts
Mouse:
Microsoft, or IBM PS/2
Note:
If “MS-DOS System with APM”
appears for the item “Computer:”,
APM is already installed. Press F3
to exit the setup.
3. Using the Arrow keys (↑ , ↓ ), position the highlighted cursor
over MS-DOS** System and press Enter.
4. Position the highlighted cursor over MS-DOS System with
APM and press Enter.
5. Verify that the item Computer has changed to
MS-DOS System with APM on the screen. If not, return to
step 3.
Windows Setup
=============
If your computer or network appears on the Hardware Compatibility List
with an asterisk next to it, press F1 before continuing.
System Information
Computer:
MS-DOS System with APM
Display:
WD9 C24 64 x48 256 colors small fonts
Mouse:
Microsoft, or IBM PS/2
6. Press Enter to install APM.
7. Restart the system to make APM effective.
Decreasing LCD Brightness
Adjust the brightness control on the LCD to the lowest level possible
that allows you to comfortably view the screen. This is an effective
way of conserving battery power.
Chapter 4. Using Battery Power
105
Maximizing the Battery-Powered Operation
Using Power-Saving Modes
For other ways to enter:
Standby mode:
Page 52.
Suspend mode:
Page 53.
Enter standby mode or suspend mode whenever you are not using
the computer. One of the easiest ways to enter the modes is to use
the Fn key function:
To enter standby mode:
press and hold Fn; then press F3.
To enter suspend mode:
press and hold Fn; then press F4.
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IBM ThinkPad 755CX User's Guide
Maximizing the Battery-Powered Operation
Using Power-Saving Options
Note:
If you have installed an operating
system, make sure you also install
the ThinkPad Features program.
To install the ThinkPad
Features program:
Page 180.
Note:
These power modes allow
immediate setting of all
power-saving options to their
optimum values for each mode.
Power mode:
Page 37.
PS2 command:
Page 41.
The power-saving options specified in each power mode save
battery power and make it possible to use the battery pack longer
before another recharge is needed. You should select Automatic
or Customized when you travel, because Automatic mode saves
power automatically, and you can select values that use the least
power by using Customized mode.
To select a power mode:
Press and hold Fn; then press F11. The power option (High
Performance, Automatic, or Customized) changes each time
you press this key combination.
Enter PS2 ? at the command prompt; then select the
appropriate PS2 command.
Click on the Power icon of the ThinkPad Features program
menu; then select Automatic or Customized.
If you use Windows or OS/2, press and hold Fn; then press F2.
The fuel-gauge window appears on the screen. Double-click
the power mode icons.
Chapter 4. Using Battery Power
107
Maximizing the Battery-Powered Operation
The following figure helps you determine how much power is
normally required for each computer feature, and how much is
required when the feature is controlled by the power-management
function:
Legend:
100%
Require Power in
No Power-Saving Mode
Saving Power
Amount of Required Power
LCD Off
Processor
Brightness at Minimum
Maximum
Medium
Slow
External Serial Off
Minimum
Internal Serial Off
Power-Saving Mode
Suspend Mode
Standby Mode
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IBM ThinkPad 755CX User's Guide
Mwave DSP Off
Hard Disk Off
Infrared Off
Chapter 5. Protecting Your Computer
This chapter provides information about how to protect your
computer and its internal devices.
Using Passwords . . . . . . . . . . . . . . . . . . . . . . . . . .
Power-On Password . . . . . . . . . . . . . . . . . . . . . .
Setting a Power-On Password . . . . . . . . . . . . . . .
Changing a Power-On Password
. . . . . . . . . . . . .
Removing a Power-On Password . . . . . . . . . . . . .
Hard-Disk Password . . . . . . . . . . . . . . . . . . . . . .
Setting a Hard-Disk Password . . . . . . . . . . . . . . .
. . . . . . . . . . . . .
Changing a Hard-Disk Password
Removing a Hard-Disk Password . . . . . . . . . . . . .
Supervisor Password . . . . . . . . . . . . . . . . . . . . . .
Considerations When Using Easy-Setup . . . . . . . . .
Setting a Supervisor Password . . . . . . . . . . . . . . .
Changing a Supervisor Password . . . . . . . . . . . . .
Removing a Supervisor Password . . . . . . . . . . . . .
Using the Hard-Disk and Power-On Passwords . . . . . . .
Using the Supervisor and Hard-Disk Passwords . . . . . .
Using Several Hard Disk Drives with the Supervisor
Password . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting a Supervisor Password when Using Several Hard
Disk Drives . . . . . . . . . . . . . . . . . . . . . . . . .
Changing or Removing the Supervisor Password when
Using Several Hard Disk Drives . . . . . . . . . . . . .
Using the Personalization Utility Program . . . . . . . . . . . .
Using Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Lock on the Hard Disk Drive . . . . . . . . . . . .
Using the Security Lock
. . . . . . . . . . . . . . . . . . . .
Using the PC Card Lock . . . . . . . . . . . . . . . . . . . .
Removing the PC Card Lock . . . . . . . . . . . . . . . .
Copyright IBM Corp. 1995
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109
Using the Passwords
Using Passwords
There are three types of passwords you can use to protect your
computer and the removable hard disk drive:
The power-on password protects your computer from being used
by unauthorized persons.
The hard-disk password protects the data on your removable
hard disk drive from being accessed by unauthorized persons.
The supervisor password protects the system information in
Easy-Setup and your removable hard disk drive from being used
by unauthorized persons.
Power-On Password
Note:
Do not press the Spacebar after
you enter the password; this action
removes the password.
Note:
If Default in the Config menu,
Password, or Start up functions
cannot be selected when using
Easy-Setup, the supervisor
password is set. You must enter
the supervisor password instead of
the power-on password to use all
Easy-Setup functions.
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IBM ThinkPad 755CX User's Guide
The power-on password helps protect your computer from being
used by unauthorized persons. If a power-on password is set, the
password prompt (
) reminds you to enter the password each
time you turn on the computer. The password prompt also appears
when you open the LCD or press the Fn key to return to normal
operation from suspend mode. When the password is entered
correctly, OK appears.
When you enter the password incorrectly, X appears. If you fail to
enter the correct password after three tries, you must turn the
computer off, wait at least 5 seconds and turn it on to try again.
When typing your password, release each key quickly. If you hold a
key down too long, the same letter can be entered repeatedly.
If the return to normal operation is caused by the timer or an
incoming call through the modem, the password prompt does not
appear. Type the correct password on the blank screen.
Using the Passwords
Setting a Power-On Password
To set power-on password, do the following:
Easy-Setup:
Page 42.
1 Start Easy-Setup and select the Password icon.
2 Select the Power-On icon ( ).
3 Type your desired power-on password; then press
Enter.
You can use any combination of up to seven characters. All
alphabets (A to Z and a to z) and numbers (0 to 9) are
allowed to use. Uppercase letter (for example, A) and
lowercase one (a) are regarded as same letter.
4 Type your power-on password again to verify it; then
press Enter.
Do Not Forget Your Power-On Password
If you forget your power-on password, you cannot reset it. You
have to take the computer to IBM authorized reseller or IBM
marketing representative have the password canceled. Proof of
purchase is required, and an additional charge might be required
for the service.
Once you set the password, you cannot change or remove it from
Easy-Setup. See “Changing a Power-On Password” on page 112 or
“Removing a Power-On Password” on page 113.
Chapter 5. Protecting Your Computer
111
Using the Passwords
Changing a Power-On Password
You must change your power-on password at the password prompt.
You cannot change it after normal operation is resumed. To change
a power-on password, do the following:
Important
Do not press Enter until you have finished all the steps to
change the power-on password.
1 Turn off the computer and wait at least 5 seconds; then
turn it on.
2 When the password prompt (
) appears, type your
current power-on password; then press the Spacebar.
3 Type the new password; then press the Spacebar.
Use no more than seven characters.
4 Type the new password again to verify it; then press
Enter.
Do Not Forget Your Power-On Password
If you forget your power-on password, you cannot reset it. You
have to take the computer to IBM authorized reseller or IBM
marketing representative to have the password canceled. Proof
of purchase is required, and an additional charge might be
required for the service.
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IBM ThinkPad 755CX User's Guide
Using the Passwords
Removing a Power-On Password
You must remove your power-on password at the password prompt.
You cannot remove it after normal operation is resumed. To remove
a power-on password, do the following:
1 Turn off the computer and wait at least 5 seconds; then
turn it on.
2 When the password prompt (
) appears, type your
current password; then press the Spacebar.
3 Press Enter.
Chapter 5. Protecting Your Computer
113
Using the Passwords
Hard-Disk Password
The hard-disk password helps protect the information stored on your
removable hard disk drive. When this password is set, the
information stored on your hard disk drive cannot be accessed
without it.
Note:
Do not press the Spacebar after
you enter the password; this action
removes the password.
If a hard-disk password is set, the hard-disk password prompt
(
) appears:
When you turn on the computer.
When you start entering Easy-Setup (with no supervisor
password set).
When the computer returns to normal operation from suspend
or hibernation mode.
When the password is entered correctly, OK appears. When the
hard-disk password is set, activation of the resume function by the
timer or an incoming calling suspend mode is disappeared. (To use
the resume function with the hard-disk password, see “Using the
Hard-Disk and Power-On Passwords” on page 122)
When you enter the password incorrectly, X appears. If you fail to
enter the correct password after three tries, you must turn the
computer off, wait at least 5 seconds, and turn it on to try again.
When typing your password, release each key quickly. If you hold a
key down too long, the same letter can be entered repeatedly.
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IBM ThinkPad 755CX User's Guide
Using the Passwords
Setting a Hard-Disk Password
To set a hard-disk password, use Easy-Setup and do the following:
To start Easy-Setup:
Page 42.
1 Start Easy-Setup; then select the Password icon.
2 Select the Hard-Disk icon ( ).
3 Type your desired hard-disk password; then press
Enter.
You can use any combination of up to seven characters. All
alphabets (A to Z and a to z) and numbers (0 to 9) are
allowed to use. Uppercase letter (for example, A) and
lowercase one (a) are regarded as same letter.
4 Type your hard-disk password again for verification; then
press Enter.
Do Not Forget Your Hard-Disk Password
Note the password and keep it in a safe place.
If you forget your hard-disk password, there is no way to reset it
or recover data from the hard disk. Neither IBM authorized
reseller nor IBM marketing representative can make the hard disk
drive usable.
Once you set the password, you cannot change or remove it from
Easy-Setup. See “Changing a Hard-Disk Password” on page 116 or
“Removing a Hard-Disk Password” on page 117.
Chapter 5. Protecting Your Computer
115
Using the Passwords
Changing a Hard-Disk Password
The procedure to change a hard-disk password depends on whether
or not it is set the same as the power-on password.
When the hard-disk password is set the same as the power-on
password, remove the hard-disk password by following the
steps in “Removing a Power-On Password” on page 113. The
hard-disk password is removed when you remove the power-on
password. After that, reset the hard-disk password. If the
power-on password is needed, reset it also.
Note:
To make the hard-disk password
the same as the power-on
password, you must change the
power-on password, see “Changing
a Power-On Password” on
page 112.
When the hard-disk password and the power-on password are
different, or the power-on password has not been set:
1 Turn off the computer and wait at least 5 seconds; then
turn it on.
2 If you have set a power-on password, type it; then press
Enter.
3 When the hard-disk password prompt (
) appears,
type your current hard-disk password; then press the
Spacebar.
4 Type the new password; then press the Spacebar.
Use no more than seven characters.
5 Type the new password again for verification; then press
Enter.
Do Not Forget Your Hard-Disk Password
Note the password and keep it in a safe place.
If you forget your hard-disk password, there is no way to reset it
or recover data in the hard disk drive. Neither IBM authorized
reseller nor IBM marketing representative can make the hard disk
drive usable.
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IBM ThinkPad 755CX User's Guide
Using the Passwords
Removing a Hard-Disk Password
The procedure to remove a hard-disk password depends on whether
or not it is set the same as the power-on password.
When the hard-disk password is set the same as the power-on
password, remove the hard-disk password by following the steps
in “Removing a Power-On Password” on page 113. The
hard-disk password is removed when you remove the power-on
password. If the power-on password is needed, reset it.
When the hard-disk password and the power-on password are
different, or a power-on password is not set:
1 Turn off the computer and wait at least 5 seconds; then
turn it on.
2 If you have set the power-on password, type it; then
press Enter.
3 When the hard-disk password prompt (
) appears,
type your current password; then press the Spacebar.
4 Press Enter.
Chapter 5. Protecting Your Computer
117
Using the Passwords
Supervisor Password
The supervisor password helps protect classified information. It:
Secures the system information stored in Easy-Setup.
Prohibits modification to the hardware.
Stops the computer after a POST error to restrict access to the
system information.
Overrides the power-on password.
If a supervisor password is set, you are prompted with a power-on
icon (
) to enter the supervisor password when entering the
Easy-Setup program. When the password is entered correctly, an
OK appears.
When you enter the password incorrectly, X appears. If you fail to
enter the correct password after three tries, you must turn the
computer off, wait at least 5 seconds, and turn it on to try again.
When typing your password, release each key quickly. If you hold a
key down too long, the same letter can be entered repeatedly.
Considerations When Using Easy-Setup
The correct supervisor password must be entered to use all
Easy-Setup functions. When accessing Easy-Setup, if Enter is
pressed without entering the supervisor password or if the power-on
password is entered instead, Default in the Config menu, Password,
and Start up functions cannot be used. To use these functions, you
must enter the correct supervisor password at the password prompt.
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IBM ThinkPad 755CX User's Guide
Using the Passwords
Setting a Supervisor Password
To set a supervisor password, do the following:
To start Easy-Setup:
Page 42.
1 Start Easy-Setup; then select the Password icon.
2 Select the Supervisor icon ( ).
3 Type your desired supervisor password; then press
Enter.
You can use any combination of up to seven characters. All
alphabets (A to Z and a to z) and numbers (0 to 9) are
allowed to use. Uppercase letter (for example, A) and
lowercase one (a) are regarded as same letter.
4 Type your supervisor password again for verification;
then press Enter.
Do Not Forget Your Supervisor Password
Note the password and keep it in a safe place.
If you forget your supervisor password, you have to take the
computer to IBM authorized reseller or IBM marketing
representative to have the system board replaced. Proof of
purchase is required, and an additional charge might be required
for the service.
There is no way to reset the password or recover data from the
hard disk. Neither IBM authorized reseller nor IBM marketing
representative can make the hard disk drive usable.
If you are using more than one hard disk drive, see page 123.
Chapter 5. Protecting Your Computer
119
Using the Passwords
Changing a Supervisor Password
Do the following to change your supervisor password:
1 Turn off the computer and wait at least 5 seconds; then
turn it on.
To start Easy-Setup:
Page 42.
2 Start Easy-Setup.
Type your current supervisor
password at the power-on prompt ( ); then press
Enter.
3 Select the Password icon from the Easy-Setup menu.
4 Select the Supervisor icon; then type your current
supervisor password and press the Spacebar.
A window appears to enter the new password.
5 Type the new password; then press Enter.
6 Type the new password again for verification; then press
Enter.
Do Not Forget Your Supervisor Password
Note the password and keep it in a safe place.
If you forget your supervisor password, you have to take the
computer to IBM authorized reseller or IBM marketing
representative to have the system board replaced. Proof of
purchase is required, and an additional charge might be required
for the service.
There is no way to reset the password or recover data from the
hard disk. Neither IBM authorized reseller nor IBM marketing
representative can make the hard disk drive usable.
If you are using more than one hard disk drive, see page 124.
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IBM ThinkPad 755CX User's Guide
Using the Passwords
Removing a Supervisor Password
Do the following to remove the supervisor password:
1 Turn off the computer and wait at least 5 seconds; then
turn it on.
To start Easy-Setup:
Page 42.
2 Start Easy-Setup.
When the power-on prompt ( )
appears, type your current supervisor password; then
press Enter.
3 Select the Password icon from the Easy-Setup menu.
4 Select the Supervisor icon; then type your current
password and press the Spacebar.
5 Press Enter at the blank box.
6 Press Enter again at the verification screen.
When the supervisor password is removed, the lock in the
) and the Hard-Disk icon can be
Supervisor icon is unlocked (
selected.
If you are using more than one hard disk drive, see page 124.
Chapter 5. Protecting Your Computer
121
Using the Passwords
Using the Hard-Disk and Power-On Passwords
You can use a hard-disk password with a power-on password.
When you turn on the computer, you are prompted to enter first the
power-on password and then the hard-disk password.
The hard-disk password can be the same as the power-on password.
If both passwords are the same:
You are prompted only once with the power-on password prompt
when the computer is turned on. Both passwords are changed
or removed at the power-on password prompt.
The resume function caused by the timer or an incoming call can
be used. The hard-disk password prompt will not appear when
normal operation is activated from the suspend mode by the
timer or an incoming call. Enter the hard-disk password at the
blank screen. The LCD remains blank until the correct password
is entered.
Using the Supervisor and Hard-Disk Passwords
When a supervisor password is set, the same password is
automatically set for the hard-disk password. Before setting a
supervisor password, make sure that you do not have a hard-disk
password set. If you do, removed it.
When you change or remove the supervisor password, the hard-disk
password also is changed or removed. Even though a hard-disk
password is set by the supervisor password, you are not prompted to
enter the hard-disk password when the computer is turned on; you
cannot change or remove the hard-disk password set by the
supervisor password.
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Using the Passwords
Using Several Hard Disk Drives with the Supervisor Password
Because the supervisor password automatically sets a hard-disk
password, you must set a supervisor password for each hard disk
drive you are using.
To change or remove a supervisor password when you are using
several hard disk drives, you must change or remove the hard-disk
password for each hard disk drive.
Setting a Supervisor Password when Using Several Hard Disk
Drives
Do the following to set a supervisor password when you are using
more than one hard disk drive on your computer:
To set a supervisor
password:
Page 119.
1 Set a supervisor password on your computer.
To install the hard disk drive:
Page 148.
2 Install the hard disk drive in which you want to set the
supervisor password.
3 Turn on the computer. A 158 error appears.
4 Press Enter.
5 Type your supervisor password at the power-on
password prompt and start Easy-Setup.
6 Select the Password icon.
7 Select the Hard-Disk icon; then press Enter.
The supervisor password sets the hard-disk password on the
hard disk drive.
8 Turn off the computer.
Repeat steps 2 through 8 to set
the supervisor password for each hard disk drive.
Chapter 5. Protecting Your Computer
123
Using the Passwords
Changing or Removing the Supervisor Password when Using
Several Hard Disk Drives
To change or remove the supervisor password when using more
than one hard disk drive on your computer, do the following:
To change the supervisor
password:
Page 120.
1 Change or remove your supervisor password on your
To remove the supervisor
password:
Page 121.
2 Install the hard disk drive with the old supervisor
To install the hard disk
password:
Page 148.
computer.
password set.
3 Turn on the computer.
The hard-disk password prompt
appears.
4 Do one of the following:
If you removed the supervisor password, type the old
supervisor password; then press the Spacebar.
If you changed the supervisor password, change the
old password on the hard disk drive to the new supervisor
password by typing:
old (space) new (space) new
5 Press Enter.
6 Turn off the computer.
Repeat steps 2 through 5 to
change or remove the supervisor password for each
hard disk drive.
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Using the Personalization Utility Program
Using the Personalization Utility Program
OS/2
WIN
You can display personal information, such as your name or
address, every time the computer is turned on with a power-on or
hard-disk password set. This can help you when you misplace your
computer. Because the password is set, your data is secured and
cannot be accessed, but the personal information is displayed and
identifies the owner of the computer. The Personalization Utilities
include the Personalization editor to create your own image to be
displayed with the text information you create, and the
personalization update utility to store your personal data in the
nonvolatile memory of your system.
Company Name: IBM Corporation
Address:
Phone Number:
Fax Number:
Message: In case you find this
computer, please contact
at the above address.
Note:
For the detail of bitmap graphics,
see page 269.
To create a personal message for your password-prompt screen,
first edit the text and convert it into a bitmap file; then imbed it onto
the password-prompt screen by using the Personalization editor. To
create your personal data, do the following:
1 Turn on the computer and start Windows or OS/2.
2 Make a backup copy of the Utility Diskette using your
operating system's diskcopy command.
3 Insert the backup copy of the Utility Diskette into the
diskette drive.
Chapter 5. Protecting Your Computer
125
Using the Personalization Utility Program
Notes:
1. Do not use the tab key when
typing your information. Use
the Spacebar instead to insert
space between text.
2. You can use any type of font or
font size.
3. A sample file (PERSSAMP.WRI) is
available on the Utility Diskette.
4 Create your text information using Write and Paintbrush
of Windows as follows:
a) Double-click on the Write icon in the Accessories window;
then type your personal information.
b) Double-click on the Paintbrush icon in the Accessories
window.
c) Select Options; then select Image Attributes... from the
pull-down menu.
Options
Help
Image Attributes...
Brush Shapes...
Edit Colors...
d) Specify a Width of 320 and Height of 200; then select
pels under “Units” and Black and White for “Colors.”
Select OK.
Image Attributes
Units
Width:
320
Height:
200
in
cm
OK
Cancel
pels
Default
Colors
Black and White
Colors
Note:
When closing the Write window, you
can save the text for future use.
e) Return to the Write window. Save the text to the
clipboard by selecting Edit and then Copy; then return to
the Paintbrush window.
Note:
A cursor ( | ) appears indicating
where the text will be placed.
f) Click on the text tool ( abc ); then click on the position
where the text is to be placed.
g) Paste the text by selecting Edit and then Paste, then
save it as a bitmap file to the backup copy of the Utility
Diskette.
h) Close Write and Paintbrush.
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IBM ThinkPad 755CX User's Guide
Using the Personalization Utility Program
5 Create the background of your password-prompt screen
as follows:
a) Select the Paintbrush icon.
b) Select Options; then Image Attributes... from the
pull-down menu.
c) Specify a Width of 160 and Height of 100; then select
pels under “Units” and Colors for “Colors.” Select OK.
Image Attributes
Units
Width:
160
Height:
100
OK
in
cm
Cancel
pels
Default
Colors
Black and White
Colors
Note:
A sample file (BACKSAMP.BMP) is
available on the diskette.
d) Draw an image or color the background; then save the
background as a 16 color bitmap file to the backup copy
of the Utility Diskette.
Save As
File Name:
Directories:
OK
a:\
a:\
Cancel
Info...
Save File as Type:
16 Color bitmap (*.BMP)
Drives:
a:
The background will contain 16 copies of your images and
the text information in the middle will cover four of the
images.
e) Close Paintbrush.
Chapter 5. Protecting Your Computer
127
Using the Personalization Utility Program
6 Save your data using the Personalization editor of
ThinkPad Features program as follows:
a) Select the Personalization icon in the ThinkPad Features
program.
The following screen appears:
Personalization Editor
File Help
Personal Data...
Background...
Convert
Preview
Exit
b) Select File from the Personalization Utility window; then
select Personal Data from the pull-down menu.
c) Select the bitmap file with the saved text on the backup of
the Utility Diskette; then click on OK or press Enter.
d) Select Convert; then select Save from the pull-down
menu.
e) Select File; then select Background from the pull-down
menu.
f) Select the bitmap file with the saved background on the
backup of the Utility Diskette; then click on OK or press
Enter.
Note:
Press the Spacebar to return to the
Personalization editor window.
g) To preview of your screen, select Preview from the
pull-down menu.
To change the screen, repeat the preceding steps.
h) Exit the Personalization Utility window.
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IBM ThinkPad 755CX User's Guide
Using the Personalization Utility Program
7 Close all applications; then turn off the computer.
8 Insert the backup copy of the Utility Diskette into the
diskette drive; then turn on the computer.
9 Select Update personalization data; then follow the
instructions on the screen.
Your data will be stored in the nonvolatile memory in the
system.
You have completed creating your personalized password-prompt
screen. It will appear when the password prompt appears. To
create a new screen, follow the same instructions.
Chapter 5. Protecting Your Computer
129
Protecting Your Computer and Internal Devices
Using Locks
Note:
You are responsible for the
evaluation, selection, and
implementation of the locking
devices and security features. IBM
makes no comments, judgments or
warranties about the functions,
quality or performance regarding
locking devices and security
features.
You can protect your computer and its internal devices with locks.
In addition, you can attach a chain to prevent the computer from
being removed without your permission.
To protect the internal devices under the keyboard and prevent
the removal of your computer, you can use the lock on the hard
disk drive, or you can purchase a Kensington lock or a
compatible lock.
To protect PC Cards, you can use a PC Card lock.
Using the Lock on the Hard Disk Drive
The hard disk drive locking lever, which is located on the bottom of
the computer, protects your computer and its internal devices.
To use this lock, slide the locking lever 1 as shown; then attach a
chain or cable to the opening 2 and a stationary object.
This also prevents the keyboard from opening and secures the
internal devices under the keyboard.
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IBM ThinkPad 755CX User's Guide
Protecting Your Computer and Internal Devices
Using the Security Lock
To prevent your computer from being removed without permission,
purchase a Kensington lock or a compatible lock and attach it to the
keyhole on the side of the computer; then secure the chain on the
lock to a stationary object.
This also prevents the keyboard from opening and secures the
internal devices under the keyboard.
Chapter 5. Protecting Your Computer
131
Protecting Your Computer and Internal Devices
Using the PC Card Lock
To prevent the PC Cards from being removed from the PCMCIA
slots, do the following.
Warning:
Make sure the locking lever for
the hard disk drive is unlocked.
To lock the keyboard:
Page 130.
1 Open the keyboard and insert the PC Card lock
1 as
shown.
2 Lock the keyboard.
Removing the PC Card Lock
To remove the PC Card lock, open the keyboard and insert the tip of
a pen into the opening 2 from the inner side of the computer; then
push the lock up.
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IBM ThinkPad 755CX User's Guide
Chapter 6. Installing and Removing Options
This chapter provides information about how to install or remove
external or internal devices and IBM options.
Installing and Removing PC Cards . . . . . . . . . . . . . . . . .
Inserting the PC Card . . . . . . . . . . . . . . . . . . . . . . .
Removing the PC Card . . . . . . . . . . . . . . . . . . . . . .
Increasing Memory Capacity . . . . . . . . . . . . . . . . . . . .
Installing an IC DRAM Card and DIMM . . . . . . . . . . . .
Removing the IC DRAM Card and DIMM . . . . . . . . . . .
Replacing the Hard Disk Drive . . . . . . . . . . . . . . . . . . .
Installing Options in the Diskette Drive Compartment . . . . . .
Reinstalling the Option Cover and Front Bezel . . . . . . . .
Installing the DAA/Telephony Kit . . . . . . . . . . . . . . . . . .
Attaching an External Numeric Keypad or a Mouse . . . . . . .
Using the Mouse and Other Pointing Devices . . . . . . . . .
Using a Mouse on the IBM ThinkPad Space Saver Keyboard
Using the ThinkPad Features Program . . . . . . . . . . .
Using the Device Driver on the Utility Diskette . . . . . . .
Attaching an External Keyboard . . . . . . . . . . . . . . . . . .
Attaching a Printer . . . . . . . . . . . . . . . . . . . . . . . . . .
Attaching an External Display . . . . . . . . . . . . . . . . . . . .
Changing the Display Mode . . . . . . . . . . . . . . . . . . .
Setting the Monitor Type and the Display Driver . . . . . . .
Connecting the External Display to the Computer
. . . . . .
Changing the Screen Resolution or Color Depth . . . . . . .
Using SVGA Display Drivers . . . . . . . . . . . . . . . . . . .
Attaching the IBM Dock I or Dock II . . . . . . . . . . . . . . . .
Copyright IBM Corp. 1995
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134
136
137
138
143
148
150
153
155
159
160
161
161
162
163
164
165
166
167
169
170
171
172
133
Installing and Removing PC Cards
Installing and Removing PC Cards
This section explains how to install and remove a PC Card. For
information about operating the computer with PC Cards, refer to
“Using PC Cards” on page 61.
Note:
When installing an operating
system, install the PCMCIA device
driver that is on the PCMCIA
Features Diskette before using the
PC Cards.
Type I and II PC Cards can be inserted into either the upper or
lower slot, or in both slots at the same time. The Type III PC Card,
however, must be inserted only in the lower slot 2 . You cannot
use a Type I or II PC Card in the upper slot 1 when a Type III PC
Card is used.
To install the PCMCIA
device driver:
Page 183.
Warning:
Do not insert IC DRAM cards into
the PCMCIA slots.
Inserting the PC Card
1 Insert the tip of a ballpoint pen into the end-cut of the
blank cover 1 ; then remove the cover from the
PCMCIA slot.
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IBM ThinkPad 755CX User's Guide
Installing and Removing PC Cards
2 Insert the PC Card into an appropriate slot according to
your PC Card type:
If you are using a Type I or Type II PC Card, insert it into
either the upper slot 1 or the lower slot 2 as shown.
Then press it firmly into the connector.
If you want to use another PC Card, insert it into the other
slot in the same way.
If you are using a Type III PC Card, insert the card into the
lower slot 2 as shown. Then press it firmly into the
connector.
3 Install the cover with the cable opening
1 .
Chapter 6. Installing and Removing Options
135
Installing and Removing PC Cards
You have completed the installation of the PC Card. Refer to the
following sections:
To use PC Cards, see “Using PC Cards” on page 61.
To use PC Cards with power-saving functions, see:
– “Considerations for Suspend Mode” on page 55.
– “Considerations for Hibernation Mode” on page 60.
To secure your PC Card with a lock, see “Using the PC Card
Lock” on page 132.
Removing the PC Card
Warning:
Make sure the PC Card lock is
removed.
1 Press the PC Card eject button,
1 or 2 , for the PC
Card you want to remove; then remove the PC Card.
To remove PC Card lock:
Page 132.
2 If you are not going to use the PCMCIA slot, remove the
cover with the cable opening; then install a blank cover.
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IBM ThinkPad 755CX User's Guide
Increasing Memory Capacity
Increasing Memory Capacity
Increasing memory capacity is an effective way to make programs
run faster. You can increase the amount of memory in your
computer by installing either an IC DRAM card or Memory Modules
(DIMMs). Because the computer has only one slot for a memory
card, you cannot use both an IC DRAM card and DIMMs at the
same time.
The computer has one slot that accepts an IC DRAM card with any
of four capacities: 2MB, 4MB, 8MB, and 16MB. Because your
computer comes with 8MB of memory, the maximum memory
capacity is 24MB if a 16MB IC DRAM card is installed.
IC DRAM card
DIMM
You might want to install more memory to maximize the capability of
your computer. Instead of using IC DRAM cards, you can install a
dual inline memory module adapter (DIMM adapter), with one or two
DIMMs, in the same slot you would install the IC DRAM card. The
memory capacity can be expanded up to 40MB. The DIMM adapter
has two sockets for future expansion. Three different capacities of
DIMMs (4MB, 8MB and 16MB) and the DIMM adapter are available
as options.
Chapter 6. Installing and Removing Options
137
Increasing Memory Capacity
Installing an IC DRAM Card and DIMM
1 Turn off the computer; then disconnect the AC Adapter
and all cables from the computer.
Warning:
Make sure the locking lever for
the hard disk drive is unlocked.
Warning:
To avoid damage to the diskette
drive, make sure the AC Adapter
is disconnected from the
computer.
2 Open the LCD; then open the keyboard.
3 Make sure there is no diskette in the diskette drive; then
lift the diskette drive handle by pulling the plastic tape
1 .
The diskette drive is a very
delicate device that needs careful
handling. Do not press on, drop,
or apply any shock to the
diskette drive while it is removed
from the computer.
4 Remove the diskette drive.
5 Which type of memory are you installing?
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IBM ThinkPad 755CX User's Guide
IC DRAM card
Go to the next step.
DIMM
Go to step 9 on page 140.
Increasing Memory Capacity
6 Place the adhesive strap
1 on the card as shown.
This strap is used to remove the card.
Warning:
Do not insert any PC Card into
the connector for the IC DRAM
card.
7 Insert the IC DRAM card as shown.
Press the card
firmly into the connector.
8 Go to step 12 on page
142.
Chapter 6. Installing and Removing Options
139
Increasing Memory Capacity
Note:
Be sure to save the base plate for
future use.
9 Pinch the levers
1 on the left side of the base plate
2 and pull the plate slightly toward the front; then raise
the rear portion of the base plate and remove it.
2
1
2
1
10 Insert the DIMM adapter
1 into the connector by
pressing on both edges as shown.
1
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IBM ThinkPad 755CX User's Guide
Increasing Memory Capacity
Warning:
To avoid damaging the DIMM, do
not touch its contact edge.
11 Insert the DIMM into either of the sockets on the DIMM
adapter.
a) Find the notch 1 on the side of the DIMM.
b) With the notched end of the DIMM toward the right side of
the socket 2 , insert the DIMM, at an angle of
approximately 35 degrees, into the socket; then press it
firmly.
c) Pivot the DIMM until it snaps into place.
If you have another DIMM to install, insert it into the other
socket in the same way.
1
2
2
1
Side View
1
2
35
Chapter 6. Installing and Removing Options
141
Increasing Memory Capacity
Warning:
The diskette drive is a very
delicate device. Do not press on
the middle of the diskette drive.
Otherwise, the drive head could
get damaged.
12 Reinstall the diskette drive.
Press on the shaded area
1 as shown until the drive snaps into the connector.
2
1
13 Close the keyboard and reconnect all cables.
You have completed the installation of the IC DRAM card or DIMMs.
If you plan to use the hibernation mode, see “Creating the
Hibernation File” on page 59.
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IBM ThinkPad 755CX User's Guide
Increasing Memory Capacity
Removing the IC DRAM Card and DIMM
1 Turn off the computer; then disconnect the AC Adapter
and all cables from the computer.
Warning:
Make sure the locking lever for
the hard disk drive is unlocked.
Warning:
To avoid damage to the diskette
drive, make sure the AC Adapter
is disconnected from the
computer.
2 Open the LCD; then open the keyboard.
3 Make sure there is no diskette in the diskette drive; then
lift the diskette drive handle by pulling the plastic tape
1 .
The diskette drive is a very
delicate device that needs careful
handling. Do not press on, drop,
or apply any shock to the
diskette drive while it is removed
from the computer.
4 Remove the diskette drive.
5 Which type of memory are you removing?
IC DRAM card
Go to the next step.
DIMM
Go to step 8 on page 145.
Chapter 6. Installing and Removing Options
143
Increasing Memory Capacity
6 Remove the IC DRAM card by pulling the adhesive
strap 1 .
7 Go to step 12 on page
144
IBM ThinkPad 755CX User's Guide
147.
Increasing Memory Capacity
Warning:
To avoid damaging the DIMM, do
not touch its contact edge.
8 Press the locks on both edges of the socket at the same
time and remove the DIMM.
9 While holding the strap
1 , pull the DIMM adapter 2
toward the front and remove it.
1
2
Chapter 6. Installing and Removing Options
145
Increasing Memory Capacity
Note:
The base plate should have been
removed and stored when you
installed the DIMM adapter.
10 Pinch the levers
1 on the left side of the base plate
2 and install it as shown.
2
1
2
1
11 Push the base plate forward to click it into place.
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IBM ThinkPad 755CX User's Guide
Increasing Memory Capacity
Warning:
The diskette drive is a very
delicate device. Do not press on
the middle of the diskette drive.
Otherwise, the drive head could
get damaged.
12 Reinstall the diskette drive.
Press on the shaded area
1 as shown until the drive snaps into the connector.
2
1
13 Close the keyboard and reconnect all cables.
Chapter 6. Installing and Removing Options
147
Replacing the Hard Disk Drive
Replacing the Hard Disk Drive
The capacity of the hard disk can be increased by replacing the
original hard disk drive with an optional one. This option can be
purchased through your IBM authorized reseller or IBM marketing
representative.
1 Turn off the computer; then disconnect the AC Adapter
and all cables from the computer.
Warning:
Make sure the locking lever for
the hard disk drive is unlocked.
Warning:
The hard disk drive is a very
delicate device that needs careful
handling. If it falls onto a hard
surface, severe damage can
occur.
Warning:
The metal area at the bottom of
the hard disk drive might become
hot, but it is not a defect.
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IBM ThinkPad 755CX User's Guide
2 Open the LCD; then open the keyboard.
3 Lift the hard disk drive handle by pulling the plastic tape
1 .
4 Remove the hard disk drive.
Be careful that you hold the drive as it comes out of the
compartment. Gently place it on a flat surface. After
removing the drive, keep it in the carrying case that contained
the replacement drive.
Replacing the Hard Disk Drive
5 Insert the replacement drive.
Press on the shaded area
1 as shown until the drive snaps into the connector;
then close the keyboard.
6 Connect the AC Adapter to the computer; then turn on
the computer.
You have completed the replacement of the hard disk drive. To
install your operating system and other necessary software, see
“What You Need for Your Computer” on page 174.
Chapter 6. Installing and Removing Options
149
Installing Options in the Diskette Drive Compartment
Installing Options in the Diskette Drive Compartment
You might need to remove the option cover and the diskette drive
bezel (on the front of the computer) when you install options in the
diskette drive compartment. To remove the option cover and bezel,
do the following:
Warning:
To prevent damage to the
diskette drive, make sure the AC
Adapter is disconnected from the
computer.
The diskette drive is a very
delicate device that needs careful
handling. Do not press on, drop,
or apply any shock to the
diskette drive while it is removed
from the computer.
1 Turn off the computer; then disconnect the AC Adapter
and all cables from the computer.
2 Open the LCD; then open the keyboard.
3 Make sure that no diskette is in the drive; then lift the
diskette drive handle with the plastic tape, and remove
the diskette drive.
4 Insert a coin between the option cover and computer.
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IBM ThinkPad 755CX User's Guide
Installing Options in the Diskette Drive Compartment
5 Push the option cover from the bottom of the computer
and remove it.
6 Insert a coin between the diskette drive bezel and
computer.
Chapter 6. Installing and Removing Options
151
Installing Options in the Diskette Drive Compartment
7 Push the bezel from the bottom of the computer and
remove it.
8 Refer to the manual that came with the option to install it
and its bezel in the compartment.
9 Close the keyboard and reconnect all cables.
10 If the option in the diskette drive compartment requires
power, start the ThinkPad Features program and set the
parameter to send power to it.
If you are using OS/2 or Windows,
OS/2
WIN
DOS
PS2 command:
Page 41.
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IBM ThinkPad 755CX User's Guide
1
2
Start the ThinkPad Features program.
Select Power; then select Diskette Drive Compartment
in the Power for devices menu.
If you are using DOS, use the PS2 command at the command
prompt.
Installing Options in the Diskette Drive Compartment
Reinstalling the Option Cover and Front Bezel
To reinstall the option cover (on the side of the computer), do the
following:
1 Insert the upper portion of the option cover into the
computer; then insert the lower portion.
The following figure shows the computer as seen from its
front side.
2 Push the upper portion of the cover down into the
computer until it snaps into place.
Chapter 6. Installing and Removing Options
153
Installing Options in the Diskette Drive Compartment
To reinstall the diskette drive bezel (on the front of the
computer), do the following:
Insert the lower portion of the diskette drive bezel into the
computer; then insert the upper portion. Push the upper
portion of the bezel down into the computer until it snaps
into place.
The following figure shows the computer as seen from its side.
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IBM ThinkPad 755CX User's Guide
Installing the DAA/Telephony Kit
Installing the DAA/Telephony Kit
Note:
In some countries, the Mwave
telephony functions are available
after the DAA/Telephony Kit option
is installed.
If the telephone plug on the left side of your computer is one with a
square receptacle, the computer can be used for telephony or
modem/fax functions without any changes. However, if a dummy
connector plug is attached, you need to install the DAA/Telephony
Kit into your computer to use the Mwave telephony functions.
To attach the DAA/Telephony Kit, do the following:
1 Turn off the computer; then open the port cover on the
left side of the computer.
Warning:
Make sure the locking lever for
the hard disk drive is unlocked.
2 Open the keyboard.
Chapter 6. Installing and Removing Options
155
Installing the DAA/Telephony Kit
3 Slide the latch
1 to the left-most position and release
the dummy plug.
4 Remove the dummy plug
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IBM ThinkPad 755CX User's Guide
2 from the computer.
Installing the DAA/Telephony Kit
5 Make sure the latch is at the left-most position; then
install the new plug with the round receptacle and firmly
press it into the connector.
Warning:
Do not leave the lever in its
middle position. Otherwise, you
cannot close the keyboard.
6 Slide the lever to its right-most position until it clicks into
place; then close the keyboard.
Chapter 6. Installing and Removing Options
157
Installing the DAA/Telephony Kit
7 Connect the cables:
DANGER
To avoid shock hazard, do not connect the
telephone cable to or disconnect it from the
computer during electrical storms.
Note:
Both ends of the DAA interface
cable are identical.
a) Connect one end of the DAA interface cable 1 to the
connector plug with the round receptacle.
b) Connect the other end of the DAA interface cable 2 to
the round receptacle of the DAA.
c) Connect the connector 3 of the ferrite-core end of the
telephone cable to the square receptacle of the DAA.
d) Connect the other end of the telephone cable to the
telephone outlet 4 on the wall.
DAA
Telephone
Outlet
Core
After you have completed attaching the modem/fax port, install the
necessary software by referring to the manual that came with the
option package.
Refer to “Using the Telephony Function” on page 84 for information
about how to use the Mwave telephony features.
158
IBM ThinkPad 755CX User's Guide
Attaching an External Numeric Keypad or a Mouse
Attaching an External Numeric Keypad or a Mouse
Warning:
When you connect a mouse other
than IBM PS/2 Miniature Mouse,
turn off the computer.
Note:
You can remove the keypad cover
1 and use it as a stand for the
keypad.
An external numeric keypad or a mouse can be attached directly to
the connector on the right side of the computer. You can use both
the IBM PS/2 Mouse and TrackPoint III as a pointing device. The
PS/2 Mouse is plugged into the external input device connector of
the computer and functions normally when the TrackPoint III is not
actually moving the cursor.
If you want to use the external numeric keypad and mouse at the
same time, first connect the keypad cable to the computer; then
connect the mouse cable 2 to the connector at the rear of the
keypad.
Chapter 6. Installing and Removing Options
159
Attaching an External Numeric Keypad or a Mouse
Using the Mouse and Other Pointing Devices
Note:
The appropriate software must have
been loaded already.
A serial mouse connected to the serial port, or a device, that is not
compatible with the PS/2 Mouse, can be connected to the external
input-device connector. Some mouse types require the TrackPoint
III to be set to Disable to use them. Do the following to disable the
TrackPoint III.
With OS/2 or Windows, do the following:
OS/2
WIN
1 Start the ThinkPad Features program.
2 Select Setup.
3 Select Keyboard/Pointing Device.
4 Find the TrackPoint; then click on Disable to disable the
TrackPoint III.
These changes will become effective when computer power is
turned off and then on again.
DOS
PS2 command:
Page 41.
Note:
You also can use Easy-Setup to
disable the TrackPoint III.
To start Easy-Setup:
Page 42.
160
IBM ThinkPad 755CX User's Guide
With DOS, use the PS2 command. Enter PS2 ? at the command
prompt; then select appropriate PS2 command.
Attaching an External Numeric Keypad or a Mouse
Using a Mouse on the IBM ThinkPad Space Saver Keyboard
You can use the IBM ThinkPad Space Saver Keyboard instead of
the keyboard of your computer. When you connect a mouse to the
Space Saver Keyboard, you must disable the TrackPoint III of your
computer. To disable the TrackPoint III, use either the ThinkPad
Features program or the Utility Diskette to install the device driver.
Using the ThinkPad Features Program
With OS/2 or Windows, do the following:
OS/2
WIN
1 Start the ThinkPad Features program.
2 Select Setup.
3 Select Keyboard/Pointing Device.
4 Find the TrackPoint; then click on Disable to disable the
TrackPoint III.
These changes will become effective when computer power is
turned off and then on again.
DOS
With DOS, use the PS2 command.
PS2 command:
Page 41.
Note:
You also can use Easy-Setup to
disable the TrackPoint III.
To start Easy-Setup:
Page 42.
Chapter 6. Installing and Removing Options
161
Attaching an External Numeric Keypad or a Mouse
Using the Device Driver on the Utility Diskette
OS/2
DOS
WIN
Note:
Do not install the device driver that
is supplied with the Space Saver
Keyboard.
When you use the Space Saver Keyboard, the device driver of the
Utility Diskette automatically disables or enables the TrackPoint III of
the computer when computer power is turned on. To install the
device driver, do the following:
1 Turn on the computer and start the operating system;
then insert the Utility Diskette into the diskette drive.
2 At the command prompt, type A:UINSTALL and press
Enter.
The following screen appears:
Installation Options
Installation Source Drive
Type the SOURCE drive leter (A-Z). When you install a program, the
SOURCE drive letter is the location you are installing FROM.
Source Drive ... [
Enter
]
F1=Help F3=Exit
3 Press Enter and follow the instructions on the screen
until the Installation Options menu appears.
4 Select the following according to your operating system:
If you are using OS/2, select Install IBM ThinkPad
Space Saver Keyboard Driver for OS/2.
If you are using DOS or Microsoft Windows, select Install
IBM ThinkPad Space Saver Keyboard Driver for DOS.
5 Follow the instructions on the screen.
6 After the installation has been successfully completed,
close all applications, remove the Utility Diskette, and
restart the system.
162
IBM ThinkPad 755CX User's Guide
Attaching an External Keyboard
Attaching an External Keyboard
You can connect an external keyboard to your computer through the
keyboard/mouse connector (separately available as an option).
Note:
The computer enters suspend mode
when the LCD is closed. If you
want to use the computer with the
LCD closed, set the suspend option
in the ThinkPad Features program
so the computer does not enter
suspend mode when the LCD is
closed.
The external keyboard must be connected through the
keyboard/mouse connector. It will not work if it is connected directly
to the computer.
The external numeric keypad and the numeric keypad on the
system keyboard cannot be used when the external keyboard is
used.
ThinkPad Features program:
Page 35.
Turn off the computer and attach the external keyboard.
2
1
Chapter 6. Installing and Removing Options
163
Attaching a Printer
Attaching a Printer
Most parallel printers with the standard Centronics** interface can be
attached to the 25-pin parallel connector (
computer.
) at the rear of the
1 Turn off the computer and attach the printer as shown.
1
2
3
2 Turn on the computer and the printer.
164
IBM ThinkPad 755CX User's Guide
Attaching and Replacing an External Display
Attaching an External Display
Note:
When installing an operating
system, you must install the display
driver before you can use the
external display.
To install the display driver:
Page 188.
Note:
When you use the 755CX SVGA
model and set the display mode to
Both:
Do not attach the external
display that supports only VGA
mode (640-by-480 resolution) to
the computer. Otherwise, the
screen of the external display is
disordered and the output is not
displayed.
The computer can display information on the LCD as follows:
755CX SVGA model supports SVGA (800-by-600 resolution)
video mode and VGA (640-by-480) with 65 536 colors.
755CX VGA model supports only VGA mode with 65 536 colors.
A 1024-by-768 resolution video at maximum can be produced on
any attached external display that supports the resolution mode.
When you attach an external display, do the following:
1. Change the display mode to CRT or Both. (See “Changing the
Display Mode” on page 166.)
2. Set your monitor type and display device driver. (See “Setting
the Monitor Type and the Display Driver” on page 167.)
3. Attach the external display to the computer. (See “Connecting
the External Display to the Computer” on page 169.)
The screen image on the
external display may appear
smaller than the actual display
size when you use the DOS
application that supports only
VGA mode.
Chapter 6. Installing and Removing Options
165
Attaching and Replacing an External Display
Changing the Display Mode
You can display information on the LCD, the external display, or both
by using the following commands.
OS/2
DOS
Using the Fn key function:
WIN
Press and hold the Fn key; then press the F7 key. The output
is displayed sequentially as follows:
External
Display
Both
LCD
Entering a PS2 command from the command prompt:
– Type PS2 SC BOTH to display information on both the LCD
and external display.
– Type PS2 SC CRT to display information on the external
display.
– Type PS2 SC LCD to display information on the LCD.
Using the ThinkPad Features program:
OS/2
WIN
1. Start the ThinkPad Features program and select the
Display icon.
2. Select:
– Both to display information on both the LCD and
external display.
– CRT to display information on the external display.
– LCD to display information on the LCD.
3. Click on the OK button.
166
IBM ThinkPad 755CX User's Guide
Attaching and Replacing an External Display
Setting the Monitor Type and the Display Driver
Before attaching the external display to your computer, set the
appropriate monitor type and device driver type as follows:
OS/2
WIN
1 Start the ThinkPad Features program.
2 Select the Display icon.
First, change Monitor settings by using the ThinkPad Features
program:
Note:
Refer to the specification of your
external display about supported
resolution and VSYNC.
3 Select Monitor.
4 Select your display type from the Monitor Selection list,
or click on the new resolution and VSYNC (refresh rate)
from the list.
5 Click on OK.
Next, change Device Driver settings as follows:
For OS/2 Warp:
1 Open the OS/2 System folder.
2 Double-click on the System Setup icon; then click
on the System icon.
3 Select the new resolution and the number of colors.
4 Restart Warp to make the changes effective.
For OS/2 V.2.11 and Windows, use the ThinkPad Features
program:
1 Select Device Driver.
2 Click on the new resolution and color depth; then
click on OK.
3 Restart OS/2 or Windows to make the changes
effective.
Chapter 6. Installing and Removing Options
167
Attaching and Replacing an External Display
Hints and Tips
When you are using Windows, the virtual screen function is available. It
is used to display a part of the high-resolution screen image that is
produced by the computer. Other parts can be seen by moving the
screen with the TrackPoint III or other pointing device. To do this, see
page 38.
168
IBM ThinkPad 755CX User's Guide
Attaching and Replacing an External Display
Connecting the External Display to the Computer
Warning:
Do not disconnect the external
display while the computer is in
suspend mode or hibernation
mode. If no external display is
attached when the computer
resumes, the LCD will remain
blank and the output will not be
displayed. It does not depend on
the resolution value.
To attach an external display to the computer, do the following:
1 Turn off the computer.
2 Attach the external display to the external display
connector (
) as shown.
1
2
3
3 Turn on the external display and the computer.
Chapter 6. Installing and Removing Options
169
Attaching and Replacing an External Display
Changing the Screen Resolution or Color Depth
To change the screen resolution or color depth of the external
display, do the following:
For OS/2 Warp:
OS/2
WIN
1 Open the OS/2 System folder.
2 Double-click on the System Setup icon; then click
on the System icon..
3 Select the new resolution and the number of colors.
4 Restart Warp to make the changes effective.
For OS/2 V.2.11 or Windows:
1 Start the ThinkPad Features program.
2 Select the Display icon.
3 Select Device Driver.
4 Click on the new resolution and color depth; then
click on OK.
5 Restart OS/2 or Windows to make the changes
effective.
170
IBM ThinkPad 755CX User's Guide
Attaching and Replacing an External Display
Using SVGA Display Drivers
The computer can display information on the attached SVGA display
according to your operating system:
For OS/2 V.2.11:
Color
256 colors
Resolution
640 by 480
800 by 600
1024 by 768
For Windows:
Color
256 colors or 64 gray
scale
32 768 colors or 65 536
colors
Resolution
640 by 480
800 by 600
1024 by 768
640 by 480
800 by 600
Chapter 6. Installing and Removing Options
171
Attaching the IBM Dock I or Dock II
Attaching the IBM Dock I or Dock II
Warning:
Do not use the Utility Diskette
that came with the IBM Dock II.
Note:
When you dock the IBM Dock I or
Dock II to the computer, see Dock I
User's Guide or Dock II User's
Guide.
To expand the ability of the computer, you can use an IBM
ThinkPad Dock I or Dock II expansion unit. Either unit offers you a
portable multimedia environment: CD-ROM compartment,
stereo-speakers, and adapter slots for various adapter cards.
The following shows the computer attached to the Dock II.
Warning:
When setting up the Dock I or
Dock II, avoid any hardware
conflicts.
To avoid hardware conflicts:
Page 227.
Hints and Tips
When the expansion unit is docked with the computer, you can adjust
the sound volume of the IBM Dock I by using the following key
combinations:
172
IBM ThinkPad 755CX User's Guide
When you press and hold Fn and then press PgUp (
sound volume increases.
), the
When you press and hold Fn and then press PgDn (
sound volume decreases.
), the
Chapter 7. Installing Software
This chapter provides information about the software installed in the
computer. It also describes how to install the necessary device
drivers when you are reinstalling the operating system or if the
operating system was not preinstalled at the time of purchase.
What You Need for Your Computer . . . .
Installing the Operating System
. . . . . .
IBM OS/2 Warp or Version 2.11
. . . .
IBM DOS Version 7.0 or Later . . . . . .
Microsoft Windows Version 3.11 or Later
Installing the ThinkPad Features Program
Installing for OS/2 . . . . . . . . . . . . .
Installing for DOS . . . . . . . . . . . . .
. . . . . . . . . .
Installing for Windows
Installing the PCMCIA Device Driver . . . .
Installing for OS/2 . . . . . . . . . . . . .
Installing for DOS . . . . . . . . . . . . .
. . . . . . . . . .
Installing for Windows
Installing the ThinkPad Display Driver . . .
Installing for OS/2 Warp . . . . . . . . .
Installing for OS/2 V.2.11 . . . . . . . . .
Installing for Windows
. . . . . . . . . .
Installing the Mwave Support Software . .
Installing for OS/2 . . . . . . . . . . . . .
Installing for DOS . . . . . . . . . . . . .
. . . . . . . . . .
Installing for Windows
Installing the Infrared Device Driver . . . .
Installing for OS/2 . . . . . . . . . . . . .
Installing for Windows
. . . . . . . . . .
Copyright IBM Corp. 1995
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174
176
176
176
177
180
180
181
182
183
185
186
187
188
189
189
191
192
192
194
195
196
196
197
173
Software Considerations
What You Need for Your Computer
The operating systems supported by the computer are:
IBM DOS Version 7.0 or later
IBM DOS Version J6.3/V or later
IBM Operating System/2 (OS/2) Warp Version 3.0
IBM Operating System/2 (OS/2) Version 2.11
Microsoft Windows Version 3.11 or later
Microsoft Windows for Workgroup Version 3.11 or later
When installing an operating system, you also must install the
following software in addition to the operating system for your
computer to operate correctly:
ThinkPad Features program
PCMCIA device driver
ThinkPad display driver
Mwave support software
Infrared support software
Important
If you will be installing Windows Version 3.11 or later, you must:
Install the ThinkPad display driver instead of the default
device drivers that came with Windows Version 3.11.
Type C to select Custom Setup when the Windows Setup
program asks you to select Express Setup or Custom
Setup.
Hints and Tips
If you are using DOS and do not use PC Cards, you can increase the
memory area for application programs by releasing the area used for PC
Cards. See “Releasing the PCMCIA Memory Area” on page 240 for
details.
174
IBM ThinkPad 755CX User's Guide
Software Considerations
The following figure shows what must be installed for each operating
system before you begin computer operation:
Page Numbers:
For OS/2:
1
2
3
4
5
6
7
Page
Page
Page
Page
Page
Page
Page
176.
180.
185.
192.
196.
189.
189.
For DOS:
8
9
1
11
Page 176.
Page 181.
Page 186.
Page 194.
For Windows:
12
13
14
15
16
17
18
19
Page
Page
Page
Page
Page
Page
Page
Page
176.
181.
194.
177.
182.
187.
195.
197.
PC DOS
Version 7.0
OS/2 Warp
or Version 2.11
Install OS/2
(Warp or Version 2.11)
1
Install the ThinkPad
Features Program
2
Install DOS
Install DOS
12
8
Install the ThinkPad
Features Program
9
Install the PCMCIA
device driver
3
Install the PCMCIA
device driver
10
Install the Mwave DSP
Support Software
4
Install the Mwave
DSP Support Software
11
Install the Infrared
Support Software
5
Install the
display driver
- OS/2 Warp
- OS/2 V.2.11
Microsoft Windows
Version 3.1
Install the ThinkPad
Features for DOS
13
Install the Mwave DSP
Software for DOS
14
Install
Microsoft Windows
15
Install with Advanced
Power Management
Select the ThinkPad
display driver
Install the ThinkPad
Features for Windows
16
Install the PCMCIA
device driver
17
6
7
Install the Mwave DSP
Software for Windows
18
Install Infrared the
Support Software
19
Start Computer Operation
Chapter 7. Installing Software
175
Installing the Operating System
Installing the Operating System
Refer to the appropriate section in the following to install your
operating system.
OS/2
IBM OS/2 Warp or Version 2.11
Follow the instructions in the operating-system documentation.
After OS/2 Warp has been successfully installed, go to “Installing
the ThinkPad Features Program” on page 180.
Important
When installing the operating system, select the choices so that
PCMCIA is supported. PCMCIA will not be supported if you
select Install Preselected Features.
DOS
IBM DOS Version 7.0 or Later
Follow the instructions in the operating-system documentation.
Go to “Installing the ThinkPad Features Program” on page 180. If
you are installing Microsoft Windows Version 3.11 or later, install the
ThinkPad Features program for DOS before you install Windows.
176
IBM ThinkPad 755CX User's Guide
Installing the Operating System
WIN
Microsoft Windows Version 3.11 or Later
Windows operates in a DOS environment. Install DOS Version 7.0
or later (see the DOS documentation); then install the ThinkPad
Features program for DOS (see page 181) before you install
Windows.
Do the following to install Windows Version 3.11 with Advanced
Power Management (APM) and to select the ThinkPad display
driver.
1 Install Windows Version 3.11 with the APM option as
follows:
Important
When the Windows Setup program asks you to select
Express Setup or Custom Setup, type C to select Custom
Setup.
a) Start the installation as specified in the Windows manual.
b) When the Windows Setup program asks you to select
Express Setup or Custom Setup, type C to select Custom
Setup.
If you have installed OS/2, the path to install Windows
might have been changed to: C:\OS2\MDOS\WINOS2 (C
is the drive on which you installed OS/2). If so, change
the path to: C:\WINDOWS.
c) Continue installing Windows Version 3.11 until the
following screen appears:
Windows Setup
===============
Setup has determined that your system includes the following hardware
and software components. If your computer or network appears on the
Hardware Compatibility List with an asterisk, press F1 for Help.
Computer:
Display:
Mouse:
MS-DOS System
VGA
Microsoft, or IBM PS/2
d) Using Up Arrow (↑ ), select MS-DOS System; then press
Enter.
e) Using Down Arrow (↓ ), select MS-DOS System with
APM; then press Enter.
Chapter 7. Installing Software
177
Installing the Operating System
Note:
Verify that Computer has changed
to MS-DOS System with APM. If
the item has not changed, return to
step 1d.
Windows Setup
===============
Setup has determined that your system includes the following hardware
and software components. If your computer or network appears on the
Hardware Compatibility List with an asterisk, press F1 for Help.
Computer:
Display:
Mouse:
MS-DOS System with APM
VGA
Microsoft, or IBM PS/2
2 Select your display resolution type:
a) Using Up Arrow (↑ ), select Display; then press Enter.
b) Select Other (Requires disk...) from the menu; then
press Enter.
c) Insert the Video Features Diskette for Windows into the
diskette drive; then type A: and press Enter.
d) Select your desired resolution from the menu; then press
Enter. (nnn×nnn is the resolution type of your display.)
Note:
Verify that Display has changed
to your desired resolution type.
If the item has not changed,
return to step 2a.
If you are not sure which
resolution to choose, choose
800x600 256 colors small
fonts for 755CX SVGA model,
or 640x480 256 colors small
fonts for 755CX VGA model.
178
IBM ThinkPad 755CX User's Guide
Windows Setup
===============
Setup has determined that your system includes the following hardware
and software components. If your computer or network appears on the
Hardware Compatibility List with an asterisk, press F1 for Help.
Computer:
Display:
Mouse:
MS-DOS System with APM
WD9 C24 nnn×nnn
Microsoft, or IBM PS/2
e) Press Enter to continue the installation.
Installing the Operating System
3 When you have completed the installation of Windows
Version 3.11, edit the AUTOEXEC.BAT file so that the
computer will use the correct mouse driver.
When Windows Version 3.11 is installed, the computer might
be automatically configured to use the mouse driver
(MOUSE.COM) provided by Windows Version 3.11. However,
for correct operation, your computer must use the mouse
driver that came with DOS.
a) At the DOS prompt (usually C:\>), type
E \AUTOEXEC.BAT; then press Enter.
b) Find the line with the MOUSE statement. If the line is as the
following, change it to: C:\WINDOWS\MOUSE.COM /Y
c) Change it to: C:\DOS\MOUSE.COM /Y
d) Save the file and restart the system.
Note:
When you start Windows from the
DOS prompt, do not close the LCD
while the program is loading; if you
do, the computer will stop running.
You have completed the installation of Windows.
Go to “Installing the ThinkPad Features Program” on page 180.
Chapter 7. Installing Software
179
Installing the ThinkPad Features Program
Installing the ThinkPad Features Program
When installing an operating system, you must install the ThinkPad
Features program that is on the Utility Diskette to set up the
programs used with your computer. Follow the instructions for your
operating system.
For OS/2, see “Installing for OS/2.”
For DOS, see “Installing for DOS” on page 181.
For Windows, see “Installing for Windows” on page 182.
OS/2
Installing for OS/2
To install the ThinkPad Features program for OS/2, do the following:
Note:
To open the OS/2 full screen:
1 Turn on the computer and start the operating system.
2 Install the ThinkPad System Management device driver.
1. Double-click on OS/2 System.
a) Insert the Utility Diskette into the diskette drive.
2. Double-click on Command
Prompts.
b) Open the OS/2 full screen command prompt.
3. Double-click on OS/2 Full
Screen.
d) Click on the Install... button.
c) Type DDINSTAL; then press Enter.
e) Click on ThinkPad System Management Device Driver;
then click on OK.
3 Open the OS/2 full-screen command prompt.
4 Go to the A: prompt and type INSTALL2; then press Enter.
PS2 command:
Page 41.
You have completed the installation of the ThinkPad Features
program.
Using PS2 command in OS/2 Environment
To use the PS2 command in the DOS session of OS/2, install the
program at the DOS full screen using the same procedure that you
used to install for DOS. (See page 181.)
Go to “Installing the PCMCIA Device Driver” on page 183.
180
IBM ThinkPad 755CX User's Guide
Installing the ThinkPad Features Program
DOS
Installing for DOS
To install the ThinkPad Features program for DOS, do the following:
1 Turn on the computer and start the operating system.
2 Insert the Utility Diskette into the diskette drive; then
type A:UINSTALL at the DOS prompt and press Enter.
The following screen appears.
Installation Options
Installation Source Drive
Type the SOURCE drive leter (A-Z). When you install a program, the
SOURCE drive letter is the location you are installing FROM.
Source Drive ... [
Enter
]
F1=Help F3=Exit
3 Press Enter.
4 Select Install DOS ThinkPad Features and
Fuel-Gauge Program from the Installation Options
menu; then follow the instructions on the screen.
You do not need to restart the computer when proceeding to
the installation of the PCMCIA device driver.
You have completed the installation of the ThinkPad Features
program.
Go to “Installing the PCMCIA Device Driver” on page 183 to install
the necessary software for PC Cards. If you do not plan to use PC
Cards, go to “Installing the ThinkPad Display Driver” on page 188.
Chapter 7. Installing Software
181
Installing the ThinkPad Features Program
WIN
Installing for Windows
If you are going to use Windows, install the ThinkPad Features
program for DOS first (see page 181); then do the following to
install the ThinkPad Features program for Windows.
1 Turn on the computer and start Windows.
2 Select File from the Program Manager window; then
select Run... from the pull-down menu.
Options
New...
Open
Move...
Copy...
Delete...
Properties...
File
Program
Windows Help
Enter
F7
F8
Del
Alt+Enter
Run...
Exit
3 Insert the Utility Diskette into the diskette drive.
4 Type A:\INSTALLW; then press Enter.
Follow the instructions on the screen.
PS2 command:
Page 41.
You have completed the installation of the ThinkPad Features
program.
Using PS2 command in the Windows Environment
To use the PS2 command in the DOS session of Windows, install the
program at the DOS full screen. (See page 181.)
Go to “Installing the PCMCIA Device Driver” on page 183.
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IBM ThinkPad 755CX User's Guide
Installing the PCMCIA Device Driver
Installing the PCMCIA Device Driver
Note:
Do not install the Phoenix**
PCMCIA support for IBM DOS 7.0.
PC Card Director for Windows runs
only in Enhanced mode of Windows
3.11 or later.
When installing an operating system, you must install the following
device drivers and software associated with PCMCIA before you
can use the PC Cards:
Card Services
Socket Services
Resource map utility
Power management utility
PC Card Director
PC Card client device drivers (only when PC Card Director does
not support the PC Card)
Use the following tables to determine the appropriate installation
instructions for the different operating systems.
For IBM OS/2 V.2.11:
Software
Card Services
Socket Services
Resource Map Utility
Power Management
Utility
PC Card Director
PC Card Client
device drivers
File Name
PCMCIA.SYS
IBM2SS01.SYS
ICRMU01.SYS
$ICPMOS2.SYS
EZPLAY2.DLL
EZPLAY2.HLP
AUTODRV2.SYS
AUTODRV2.INI
Varies among PC
Cards.
How to Install
Go to “Installing the
PCMCIA Device
Driver” for
installation.
Refer to the manual
that came with the
PC Card.
Chapter 7. Installing Software
183
Installing the PCMCIA Device Driver
For IBM DOS Version 7.0 or later:
Only for DOS.
Only for Windows.
Software
Card Services
Socket Services
Resource Map Utility
Power Management
Utility
PC Card Director
PC Card Client
device drivers
Auto Configurator for PC
Card Director:
Page 231.
184
IBM ThinkPad 755CX User's Guide
File Name
IBMDOSCS.SYS
IBMDSS01.SYS
DICRMU01.SYS
$ICPMDOS.SYS
EZPLAY.EXE
EZPLAYW.EXE
EZPLAYW.HLP
AUTODRV.SYS
AUTODRV.INI
DISKDRV.SYS
IBMVCD.386
Varies among PC
Cards.
How to Install
Installed with the
PCMCIA device
driver. (See
“Installing the
PCMCIA Device
Driver” on page 183
for installation.)
Refer to the manual
that came with the
PC Card.
With the PCMCIA device driver, you can use PC Card Director and
Auto Configurator to see the details about the PC Cards installed in
the PCMCIA slot.
Installing the PCMCIA Device Driver
OS/2
Installing for OS/2
To install the PCMCIA device driver for OS/2, do the following:
1 Turn on the computer and start the operating system.
2 Insert the PCMCIA Features Diskette into the diskette
drive.
3 Open the OS/2 full screen command prompt; then type
A:PCMINST2 and press Enter.
Note:
To restart the system:
1. Move the cursor to a blank part
of your OS/2 Desktop.
4 Follow the instructions on the screen.
5 After the installation has been successfully completed,
close all applications, remove the PCMCIA Features
Diskette from the diskette drive, and restart the system.
2. Press the right button of your
TrackPoint III or mouse.
3. Select Shut down.
Note:
Whenever you update the
CONFIG.SYS file, refer to “Software
Considerations for OS/2” on
page 234.
You have completed the installation of the PCMCIA device driver for
OS/2.
Go to “Installing the ThinkPad Display Driver” on page 188.
Chapter 7. Installing Software
185
Installing the PCMCIA Device Driver
DOS
Installing for DOS
To install the PCMCIA device driver for DOS, do the following:
1 Turn on the computer and start the operating system;
then insert the PCMCIA Features Diskette into the
diskette drive.
2 At the command prompt, type A:UINSTALL and press
Enter.
The following screen appears:
Installation Options
Installation Source Drive
Type the SOURCE drive leter (A-Z). When you install a program, the
SOURCE drive letter is the location you are installing FROM.
Source Drive ... [
Enter
]
F1=Help F3=Exit
3 Press Enter.
4 Select Install DOS PCMCIA Device Drivers from the
Installation Options menu; then follow the instructions on
the screen.
Note:
If you are using a software EMS
driver, such as EMM386.EXE, see
page 235. Whenever you update
the CONFIG.SYS file, see
page 238.
5 After the installation has been successfully completed,
close all applications, remove the PCMCIA Features
Diskette from the diskette drive.
You do not need to restart the computer when proceeding to
the installation of the ThinkPad display driver.
You have completed the installation of the PCMCIA device driver for
DOS.
Go to “Installing the ThinkPad Display Driver” on page 188.
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IBM ThinkPad 755CX User's Guide
Installing the PCMCIA Device Driver
WIN
Installing for Windows
To install the PCMCIA device driver for Windows, do the following:
1 Turn on the computer and start the operating system.
2 Select File from the Program Manager window; then
select Run... from the pull-down menu.
Options
New...
Open
Move...
Copy...
Delete...
Properties...
File
Program
Windows Help
Enter
F7
F8
Del
Alt+Enter
Run...
Exit
3 Insert the PCMCIA Features Diskette into the diskette
drive.
4 Type A:PCMINSTW; then press Enter.
5 Follow the instructions on the screen to complete the
installation.
You have completed the installation of the PCMCIA device driver for
Windows.
If you did not install the display driver when installing Windows, go
to “Installing the ThinkPad Display Driver” on page 188.
Chapter 7. Installing Software
187
Installing the ThinkPad Display Driver
Installing the ThinkPad Display Driver
The display driver provides a high-resolution mode for an attached
SVGA display.
Note:
For more information of the display
driver, see “Attaching an External
Display” on page 165.
The display driver also increases the performance for OS/2 or
Windows users. Follow the instructions for your operating system:
For OS/2, see “Installing for OS/2 V.2.11” on page 189 to install
OS/2 device drivers, including the WIN-OS/2 device drivers.
For Windows, if you did not install the display driver when
installing Windows, see “Installing for Windows” on page 191 to
install Windows device drivers.
Note:
You can change the refresh rate of
the external display with the PS2
command.
PS2 command:
Page 41.
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IBM ThinkPad 755CX User's Guide
For DOS, display drivers have already been prepared in the
computer as a basic function. You do not need to install them.
Installing the ThinkPad Display Driver
OS/2
Installing for OS/2 Warp
Refer to the documentation that came with the display driver
diskette for OS/2 Warp. Select the WD90C24 display driver when
installing the display driver.
OS/2
To install the ThinkPad
Features program:
Page 180.
ThinkPad Features program:
Page 35.
Installing for OS/2 V.2.11
You must do the following before you install the Display Driver:
Before You Begin
Using the ThinkPad Features program, set the display
device mode to LCD; select the Display icon; then LCD.
Or, at the command prompt, type PS2 SC LCD; then press
Enter.
Make sure you have the installation package for OS/2 2.11.
If you have installed OS/2 from CD-ROM, create display
driver diskette 1 and 2 by LOADDSKF.EXE before installing
the ThinkPad Display Driver.
1. Insert a blank diskette into the diskette drive; then type:
X:\DISKIMGS\LOADDSKF X:\DISKIMGS\OS2\35\DISP1.DSK A:
X is the drive for the CD-ROM drive.
2. Insert another blank diskette into the diskette drive; then
type:
X:\DISKIMGS\LOADDSKF X:\DISKIMGS\OS2\35\DISP2.DSK A:
X is the drive for the CD-ROM drive.
3. Refer to the README.TXT file on the Video Features
Diskette for information about the device driver.
Note:
To open the OS/2 full screen:
1. Select OS/2 System.
2. Select Command Prompts;
then select OS/2 Full Screen.
Note:
All necessary files are copied to
your hard disk drive in the following
subdirectory names: \OS2,
\OS2\DLL, \OS2\MDOS,
\OS2\INSTALL, and
\OS2\MDOS\WINOS2\SYSTEM.
1 Start OS/2 and open the OS/2 full screen.
2 Insert the Video Features Diskette for OS/2 into the
diskette drive.
3 At the command prompt, type A:; then press Enter.
4 Type INSTALL C and press Enter; then follow the
instructions on the screen.
C is the drive on which the device driver is to be installed; it
can be something different.
Chapter 7. Installing Software
189
Installing the ThinkPad Display Driver
Note:
To shut down OS/2:
1. Move the mouse pointer to a
blank part of your OS/2
Desktop.
2. Press the right button of your
TrackPoint III or mouse.
3. Select Shut down.
5 Remove the diskette from the diskette drive and shut
down OS/2; then restart the system.
6 Open the OS/2 full screen, type DSPINSTL; then press
Enter.
7 Follow the instructions on the screen.
When you are asked to enter the source directory, do the
following:
– If OS/2 has been preinstalled on your computer, use
the default directory on the screen. Do not change it.
– If OS/2 has not been preinstalled, enter A:\.
When you are asked to select the display type, select
Primary Display; then select Western Digital**
WD90C24, C24A on ThinkPad for the LCD of the
computer.
When you are asked to select the monitor configuration,
select Install Using Defaults for Monitor Type and
follow the instruction.
When you are asked to overwrite the target file, select
Yes.
8 After the installation has been successfully completed,
remove the diskette; then shut down OS/2 and restart
the computer.
You have completed the installation of the display driver for OS/2.
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IBM ThinkPad 755CX User's Guide
Installing the ThinkPad Display Driver
WIN
Installing for Windows
If you did not install the display driver when Windows was installed
(by following the procedures on page 177), install the display driver
for Windows:
1 Exit Windows and go to the DOS prompt if Windows is
running.
2 Go to the Windows subdirectory (C:\Windows>) and type
SETUP; then press Enter.
3 Select Display from the Windows Setup menu; then
select Other (Requires disk...) from the next menu.
4 Insert the Video Features Diskette for Windows into the
diskette drive; then type A:\ and press Enter.
Note:
If you are not sure which resolution
to choose, choose 800x600 256
colors small fonts for 755CX
SVGA model, or 640x480 256
colors small fonts for 755CX VGA
model.
5 Select your favorite resolution and colors from the menu
and follow the instructions on the screen.
You have completed the installation of the display driver for
Windows.
Chapter 7. Installing Software
191
Installing the Mwave Support Software
Installing the Mwave Support Software
Note:
If you have multiple operating
systems, you might need to install
multiple versions of the Mwave
support software. For example, to
enable DOS and Windows
applications for Mwave functions,
two separate Mwave support
software installations are required:
one for DOS and one for Windows.
When installing an operating system, you must install the Mwave
support software.
The Mwave support software is supplied in the Mwave DSP
Features Diskettes or in the hard disk drive of your computer.
If the Mwave DSP Features Diskettes were not supplied with
your computer, the support software is contained on the hard
disk drive. See the READ.ME file in the root directory of the
hard disk to install the Mwave DSP support software.
If the Mwave DSP Features Diskettes were supplied with your
computer, install the Mwave support software as follows:
– For OS/2, see “Installing for OS/2.”
– For DOS, see “Installing for DOS” on page 194.
– For Windows, see “Installing for Windows” on page 195.
OS/2
Installing for OS/2
Before installing the Mwave support software for OS/2, install
Multimedia Presentation Manager/2 (MMPM/2), which comes with
OS/2 V.2.11. Refer to the OS/2 Version 2.11 Installation Guide for
instructions.
To install the Mwave support software for OS/2, do the following:
Note:
To open the OS/2 full screen:
1. Select OS/2 System.
2. Select Command Prompts;
then select OS/2 Full Screen.
1 Turn on the computer; then start OS/2.
2 Open the OS/2 full screen.
3 Insert the Mwave DSP Features Diskette 1 for OS/2 into
the diskette drive.
4 Type A:SETUP; then press Enter.
The installation window appears on the screen.
5 Follow the instructions on the screen.
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IBM ThinkPad 755CX User's Guide
Installing the Mwave Support Software
Note:
To shut down OS/2:
1. Move the mouse pointer to a
blank part of your OS/2
Desktop.
2. Press the right button of your
TrackPoint III or mouse.
3. Select Shut down.
6 Restart OS/2 to make the Mwave features effective.
7 Install Mwave MMPM audio support software as follows:
a) Insert the Mwave DSP Features Diskette for OS/2 Audio
into the diskette drive.
b) Type A:SETUP at the command prompt; then press
Enter.
c) Follow the instructions on the screen.
8 After the installation is complete, remove any diskette
from the diskette drive; then restart OS/2 to activate the
Mwave support software.
You have completed the installation of the Mwave support software
for OS/2.
When You Use the WIN-OS/2 Environment
If you use the Mwave functions in the WIN-OS/2 environment, do
the following:
1 Install the Mwave support software for Windows in a
full-screen WIN-OS/2 environment with the procedure on
page 195.
2 Check your WIN-OS/2 Settings and modify them as
follows, referring to your OS/2 manuals:
WIN_RUN_MODE: 3.1 Enhanced Compatibility
HW_TIMER: ON
INT_DURING_IO: ON
DOS_BACKGROUND_EXECUTION: ON
Chapter 7. Installing Software
193
Installing the Mwave Support Software
DOS
Installing for DOS
To install the Mwave support software for DOS, do the following:
1 Turn on the computer.
2 Insert the Mwave DSP Features Diskette 1 for DOS into
the diskette drive.
3 At the command prompt, type A:INSTALL; then press
Enter.
The following screen, which enables you to specify the
directory location of Mwave support software, appears:
Please specify the directory for the
installation of Mwave products.
Destination Path
c:\MWD
OK
Cancel
4 If this directory is acceptable, press Enter.
Otherwise,
type the directory name; then press Enter.
5 Follow the instructions on the screen.
6 After the installation is complete, remove any diskette
from the diskette drive; then restart DOS to activate the
Mwave support software.
You have completed the installation of the Mwave support software
for DOS.
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IBM ThinkPad 755CX User's Guide
Installing the Mwave Support Software
WIN
Warning:
Before you install the Mwave
support software, close all open
applications.
Installing for Windows
To install the Mwave support software for Windows, do the
following:
1 Turn on the computer; then start Windows.
2 Select File from the Program Manager window; then
select Run... from the pull-down menu.
3 Insert the Mwave DSP Features Diskette 1 for Windows
into the diskette drive.
4 Type A:SETUP; then press Enter.
The following screen, which enables you to specify the
directory location of Mwave support software, appears:
Mwave Installation
Please enter the desired location for the Mwave files.
c:\MWW
OK
Cancel
5 If this directory is acceptable, press Enter.
Otherwise,
type the directory name; then press Enter.
6 Follow the instructions on the screen.
7 After the installation is complete, remove any diskette
from the diskette drive; then restart Windows to activate
the Mwave support software.
You have completed the installation of the Mwave Windows support
software.
Chapter 7. Installing Software
195
Installing the Infrared Device Driver
Installing the Infrared Device Driver
When installing an operating system, you must install the IR
(infrared) device drivers.
Follow the instructions for your operating system.
For OS/2, see “Installing for OS/2.”
For Windows, see “Installing for Windows” on page 197.
OS/2
Installing for OS/2
1 Turn on the computer and start OS/2.
2 If you have not installed DOS and WIN-OS/2 support for
OS/2, install it by referring to your operating systems
documents.
Note:
To go to the DOS command
prompt:
1. Select OS/2 System.
2. Select Command Prompts;
then select DOS Full Screen.
3 Go to the DOS command prompt.
4 Insert the Infrared Features Diskette into the diskette
drive.
5 Type A:UINSTALL; then press Enter.
The following screen appears:
Installation Options
Installation Source Drive
Type the SOURCE drive leter (A-Z). When you install a program, the
SOURCE drive letter is the location you are installing FROM.
Source Drive ... [
Enter
]
F1=Help F3=Exit
6 Press Enter; then follow the instructions on the screen.
You have completed the installation of the infrared device drivers.
Go to “Installing the ThinkPad Display Driver” on page 188.
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IBM ThinkPad 755CX User's Guide
Installing the Infrared Device Driver
WIN
Installing for Windows
1 Turn on the computer; then go to the DOS command
prompt.
2 Insert the Infrared Features Diskette into the diskette
drive.
3 Type A:UINSTALL; then press Enter.
The following screen appears:
Installation Options
Installation Source Drive
Type the SOURCE drive leter (A-Z). When you install a program, the
SOURCE drive letter is the location you are installing FROM.
Source Drive ... [
Enter
]
F1=Help F3=Exit
4 Press Enter; then follow the instructions on the screen.
You have completed the installation of the infrared device drivers.
Go to “Installing the ThinkPad Display Driver” on page 188.
Chapter 7. Installing Software
197
Installing the Infrared Device Driver
198
IBM ThinkPad 755CX User's Guide
Chapter 8. Solving Computer Problems
Computer problems can be caused by software, hardware, or both.
Many problems can be diagnosed and solved with the assistance of
self-tests and system programs. If a hardware problem is detected
by the self-tests, an error message is displayed.
The system programs can identify a problem or provide information
for the service representative. Make a note of all error codes and
give them to the service representative when you call for service. If
the system programs cannot be loaded, the troubleshooting charts
and other information will help you determine what corrective action
to take.
Important
Use this chapter to test only IBM products. Non IBM products
can cause misleading error information or incorrect computer
responses. When testing non IBM products, refer to the
instructions supplied with those products.
Commonly Asked Problems and Actions . . . . . . . . . . .
Testing the Computer . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Charts . . . . . . . . . . . . . . . . . . . . .
LCD Problems . . . . . . . . . . . . . . . . . . . . . . . . .
Screen Messages . . . . . . . . . . . . . . . . . . . . . . .
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . .
General Problems . . . . . . . . . . . . . . . . . . . . . . .
What If Testing Cannot Find the Problem? . . . . . . . . . .
Battery Power Problems . . . . . . . . . . . . . . . . . . .
Diskette Drive Problems . . . . . . . . . . . . . . . . . . .
Mwave DSP Feature Problems . . . . . . . . . . . . . . .
Infrared Communication Problems . . . . . . . . . . . . .
Software Problems . . . . . . . . . . . . . . . . . . . . . .
Option Problems . . . . . . . . . . . . . . . . . . . . . . . .
Keyboard, External Numeric Keypad, and Pointing Device
Problems . . . . . . . . . . . . . . . . . . . . . . . . . . .
External Display Problems . . . . . . . . . . . . . . . . . .
Printer Problems . . . . . . . . . . . . . . . . . . . . . . . .
Intermittent Problems . . . . . . . . . . . . . . . . . . . . .
Listing Installed Options . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .
Recording Identification Numbers
Getting Service . . . . . . . . . . . . . . . . . . . . . . . . . .
The IBM HelpClub: Another Great Choice (for European
Countries) . . . . . . . . . . . . . . . . . . . . . . . . . . .
Yours for a free trial period.
. . . . . . . . . . . . . . .
Join the HelpClub! . . . . . . . . . . . . . . . . . . . . .
Copyright IBM Corp. 1995
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199
What If Your Computer Does Not Work?
Commonly Asked Problems and Actions
This section provides a list of possible common problems that you
might have with their corresponding actions.
P:
A:
A memory shortage or memory error occurs.
Do one of the following:
Unload any unnecessary drivers from the CONFIG.SYS file.
If you are using DOS, use the multiple configuration setup
of DOS (refer to the documents supplied with the DOS
operating system).
P:
A:
The external display screen is blank.
Do the following:
1. Make sure the display device parameter of the ThinkPad
Features program is correctly specified to use the external
display.
2. Set the computer not to enter suspend mode when the
LCD is closed by using the ThinkPad Features program.
P:
The computer does not resume from suspend mode, or
the suspend indicator stays on and the computer does
not work.
A:
The computer automatically enters suspend or hibernation
mode when the battery pack is empty. Do one of the following:
Replace the battery pack with a fully charged one.
Connect the AC Adapter to the computer and charge the
battery pack.
P:
When using Windows, the cursor does not move after
normal operation is resumed from one of the
power-saving modes.
A:
Make sure you have installed Windows with the APM option by
following the procedures on page 177.
P:
The computer does not enter suspend or hibernation
mode.
A:
Do one of the following:
If the computer is attached to the Dock I, suspend mode is
disabled.
If the AC Adapter is used and the computer is
communicating, suspend and hibernation modes are
disabled.
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IBM ThinkPad 755CX User's Guide
What If Your Computer Does Not Work?
P:
A:
The PC Card modem does not work.
Do the following:
1. Start the PC Card Director and check the serial port name
(COM1–COM4) assigned to the modem card.
2. Open your PC Card application; then assign the serial port
name for the modem.
P:
A:
The battery pack loses power too soon.
P:
A:
The battery status indicator blinks.
P:
A:
Error 2XX appears (memory error).
Repeat the complete discharging and charging procedure two
to three times. See “Preserving Battery-Pack Life” on
page 103 for more information.
If you use the NiMH battery pack, slide the switch on the
battery pack to the on position ( | ) with a ballpoint pen.
Make sure your memory card is correctly installed.
Chapter 8. Solving Computer Problems
201
What If Your Computer Does Not Work?
Testing the Computer
1 Turn on the computer.
The power-on self-test (POST) runs automatically. If the test
ends without detecting an error, one of the following occurs:
The operating system or application screen appears.
A password prompt appears on the screen, if a password
has been set. Type the correct password and press Enter.
The Diskette and F1 prompts (shown below) appear.
F1
F2
F10
This means no operating system is installed in your
computer. Install it now.
Did one of these screens appear?
Yes Turn off the computer and continue with step 2.
No
Go to page 204.
2 Press and hold F1; then turn on the computer to start
Easy-Setup. Hold F1 until the following Easy-Setup
menu appears.
Easy-Setup
Config
Date/Time Password
Start
Test
Restart
3 Did the Easy-Setup menu appear on the screen?
Yes
202
IBM ThinkPad 755CX User's Guide
The computer has successfully completed the POST
(internal tests), and the system programs have been
loaded. To start the test programs, select the Test
icon; then select the Start icon or press Enter.
What If Your Computer Does Not Work?
Start
Restart
1
1
1
SystemBoard Memory Display HDD-1 FDD-1 PCMCIA-1 Parallel
2
Serial
DSP
CD-ROM
2
2
HDD-2 FDD-2 PCMCIA-2
If the computer did not beep, the speaker is not
working correctly. Have the computer serviced. If
you are not sure about the beep, turn off the
computer; then turn it on again and repeat step 2
on page 202.
If you cannot go beyond the first screen, have the
computer serviced.
If an error is detected, the character X appears at
the left of the affected device, and an error code
appears below it. Record the error code and have
the computer serviced.
If the test does not find a problem but one still
exists, find the problem in the troubleshooting
charts on page 204.
No
Return to step 2 on page 202 and start Easy-Setup
again. If you still cannot start Easy-Setup, find the
problem in the troubleshooting charts from page 204.
Chapter 8. Solving Computer Problems
203
What If Your Computer Does Not Work?
Troubleshooting Charts
In the charts, x can be any character.
LCD Problems
Problem
The screen is blank and
there are no beeps.
Note: If you are not sure
about the beeps, turn the
computer off; then turn it
on again, and listen for
the beep.
The screen is blank and
there is one beep.
Note: If you are using an
external display, go to
“External Display
Problems” on page 218.
The screen is blank and
there is a continuous
beep, or two or more
beeps.
Only the cursor appears.
xxxxx KB OK appears
and the computer halts.
The screen is unreadable
or distorted.
Action
Verify that:
The battery pack is correctly installed.
The AC Adapter is connected to the computer and the power cord is
plugged into a working electrical outlet.
The computer power switch is turned on.
If preceding items are correct and the screen remains blank, have the computer
serviced.
If a power-on password is set, type the correct password and press Enter (see
page 110).
If a power-on password is not set, verify that:
The brightness control on the computer is correctly adjusted.
The Display device parameter of the ThinkPad Features program is correctly
specified.
If the preceding items are correct and the screen remains blank, have the
computer serviced.
Have the computer serviced.
Have the computer serviced.
Have the computer serviced.
Verify that the ThinkPad display driver was installed correctly (see page
188).
Verify that Display in the Windows Setup screen is set to your display
resolution type (see page 177).
Incorrect characters
appear on the screen.
If these are correct, test the computer. If the test ends without an error, have
the computer serviced.
Verify that operating systems and application programs have been installed and
configured correctly.
If so, have the computer serviced.
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IBM ThinkPad 755CX User's Guide
What If Your Computer Does Not Work?
Problem
The screen image
appears smaller than the
LCD size (using a DOS
application on a 755CX
SVGA model only).
When you use DOS Shell
or some kind of
application in the DOS
environment, the lines on
the screen are disordered.
(755CX SVGA model
only)
Action
This is to maintain compatibility with the DOS application; it is not a problem.
Verify that:
If you are using DOS Shell and have set the screen mode 800-by-600
resolution with the PS2 MODE3X command, do the following:
1. At the DOS Shell screen, select Options from the menu bar; then select
Display....
2. Select Graphics 30 lines Medium Resolution 1; then select OK.
The screen will recover.
If you are using an application other than DOS Shell, do the following:
The screen stays on
although the power switch
is turned off.
The computer goes into
suspend mode
immediately after the
POST. (The suspend
mode indicator turns on.)
– At the DOS command prompt, type PS2 MODE3X OFF; then press
Enter.
Press the Power Shutdown switch on the rear of the computer with the tip of a
pen to turn off the computer; then turn the computer on again.
Verify that:
The battery pack is charged. (The battery power status indicator is green or
yellow.)
Keyboard is firmly closed.
When the external display is attached to the computer, the Will not
suspend even if LCD is closed option (in the Suspend/Resume options of
the ThinkPad Features program) is not enabled. (See page 35.)
The environmental temperature is in an acceptable range. Refer to
“Specifications” on page 251.
Error 190 appears and the
computer immediately
turns off.
Missing, discolored, or
bright dots appear on the
screen at all times.
If the preceding items are correct, have the computer serviced.
The battery pack is low in power. Connect the AC Adapter to the computer, or
replace the battery pack with a fully charged one.
The computer LCD contains more than 1 440 000 (for the 755CX SVGA model)
or 921 000 (for the 755CX VGA model) thin-film transistors (TFTs). A small
number of missing, discolored, or bright dots on the screen is an intrinsic
characteristic of TFT LCD technology and is not an LCD defect.
Chapter 8. Solving Computer Problems
205
What If Your Computer Does Not Work?
Screen Messages
Message
Diskette and F1 prompts.
Action
Verify that hard disk drive is correctly installed. Or, verify that the self-starting
diskette is inserted correctly (with the label up and metal-shutter end first) in the
diskette drive.
If so, press F1. If both prompts remain, have the computer serviced.
F1
F2
F10
Error 163 appearing with
the date and time screen.
Set the date and time by typing or clicking on the
then click on the OK button.
or
to set the numbers;
1995 .03.31
Year
Month
Day
23:59:59
Hour
Month
Second
The date and time screen
appears when neither the
date nor the time is set in
the computer.
Power-on password
prompt.
A power-on or supervisor password was set. To use the computer, type the
correct password and press Enter (see page 110).
If the power-on-password is not accepted, a supervisor password might have
been set. Type the supervisor password and press Enter.
If there is still a problem, have the computer serviced.
Hard-disk password
prompt.
A hard-disk password was set. To use the computer, type the correct password
and press Enter (see page 110).
If there is still a problem, have the computer serviced.
Test menu.
Select the Start icon and follow the instructions to test your system.
If you cannot go beyond the first screen, have the computer serviced.
If the computer stops during testing and does not continue, have the
computer serviced.
If testing does not find a problem but one still exists, find the problem in
“What If Testing Cannot Find the Problem?” on page 211.
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IBM ThinkPad 755CX User's Guide
What If Your Computer Does Not Work?
Message
POST error prompt.
Action
An error was found during the POST. Press Enter; then select Start from the
test menu to run the test.
If the test ends with an error, make a note of the error code and have the
computer serviced.
Error prompt.
Turn off the computer and start Easy-Setup; then select Test to test the
computer.
You can start the operating system by pressing F1 instead and ignore the error.
A screen or message that
is not listed.
Turn off the computer and start Easy-Setup; then select Test to test the
computer.
If you cannot start Easy-Setup, have the computer serviced.
Chapter 8. Solving Computer Problems
207
What If Your Computer Does Not Work?
Error Codes
Screen Message
I9990301
I9990302
I9990305
Note: Incorrect
connection of the hard
disk drive can cause
these error codes to
appear.
Action
The computer cannot find the startup drive.
Action:
1. Turn off the computer.
2. Press and hold F1; then turn on the computer to start Easy-Setup. Hold F1
until the Main Menu appears.
3. Select the Start up icon. If you are unable to set the startup sequence,
have the computer serviced.
4. Check the list of devices on the Set Startup Sequence screen. Is the
default drive in the startup sequence?
Yes Exit this screen, and turn off the computer.
No Select the Reset icon.
5. Is an operating system installed?
Yes Go to step 7.
No Install the operating system in your computer.
6. After the operating system is installed, turn off the computer.
7. Turn on the computer.
I99xxxxx
111
If the same screen message appears, have the computer serviced.
Have the computer serviced.
If you are using a Port Replicator or an expansion unit, disconnect it; then
reconnect it.
158
If there is still a problem, have the computer serviced.
A hard disk drive without a hard-disk password is installed when a supervisor
password is set.
Action:
1. Press Enter. The password menu in Easy-Setup appears.
2. Select the Hard-Disk icon.
3. Press Enter. The same password as the supervisor password is set for the
hard-disk password on the hard disk drive.
The hard-disk password differs from the supervisor password.
159
Action:
1. Turn off the computer; then turn it on again.
16x or 17x
174
2. Change the hard-disk password to the supervisor password at the hard-disk
password prompt.
Follow the instructions on the screen.
There is a device configuration error.
Check that the hard disk drive and the diskette drive are installed firmly in the
connectors.
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What If Your Computer Does Not Work?
Screen Message
184
190
Action
The entered password is invalid. Turn off the computer and wait at least 5
seconds; then turn it on again and type the correct password.
The computer has turned off because of a critically low-battery condition.
Action:
195
Connect the AC Adapter to the computer and charge the battery pack.
The system configuration before and after hibernation mode differs, and the
computer cannot resume normal operation.
Action:
Change the system configuration to what it was before the computer entered
hibernation mode.
196
2xx
30x
If the memory size is changed, re-create the hibernation file (see page 59).
The computer cannot read the hibernation file.
Have the computer serviced.
Verify that the IC DRAM card or DIMM option is correctly installed.
Turn off the computer and all attached devices. Turn on the computer first; then
turn on the attached devices.
If the computer has an external keyboard connected, verify that:
1. The external keyboard is connected to the correct side of the
keyboard/mouse connector (see page 163).
2. The keyboard/mouse connector is correctly connected to the computer.
If the preceding items are correct, disconnect the keyboard/mouse connector
from the computer and verify that the operation of the system keyboard is
correct. If the system keyboard works correctly, have the keyboard/mouse
connector or the external keyboard serviced.
Test the computer by selecting the Start icon.
– If the computer stops during testing and does not continue, have the
computer serviced.
– If the tests do not find a problem but one still exists, find the problem in
“What If Testing Cannot Find the Problem?” on page 211.
Chapter 8. Solving Computer Problems
209
What If Your Computer Does Not Work?
General Problems
Problem
The computer
performance is getting
worse in an environment
where the temperature is
higher than the product
specifications. (See
“Specifications” on
page 251.)
Problems such as a
broken keylock or an
indicator not working.
The computer does not
turn off with the power
switch.
The application locks up
or the computer does not
accept any input.
The computer does not
start from a diskette.
Keyboard cannot be
opened.
210
Cause or Action
Processor speed may decrease if the computer is used in a high-temperature
environment.
Have the computer serviced.
If the suspend indicator is turned on, connect the AC Adapter or install a fully
charged battery pack to the computer; then resume it.
If there is still a problem, press the Power Shutdown switch on the rear of the
computer with the tip of a pen to turn off the computer.
Press the Power Shutdown switch on the rear of the computer with the tip of a
pen to turn off the computer; then turn the computer on again.
Check that the startup sequence is set to start the computer from the diskette
drive (see page 47).
Check that the locking lever for the hard disk drive is unlocked or that the
Kensington lock is not used.
IBM ThinkPad 755CX User's Guide
What If Your Computer Does Not Work?
What If Testing Cannot Find the Problem?
If the test programs do not find the problem, use the following troubleshooting charts:
Battery Power Problems
Problem
The battery pack starts
discharging automatically,
even if the AC Adapter is
connected.
When you are using OS/2
or Windows, the message,
“Please discharge battery”
appears on the screen.
The computer does not
operate with a fully
charged battery pack.
A fully charged NiMH
battery pack discharges
too soon.
Action
When the AC Adapter is connected, and the remaining power of the installed
battery pack is less than a certain amount, discharging and then charging of the
battery pack starts automatically.
Discharge the battery pack; then recharge it (see page 100).
Discharge the battery pack; then recharge it (see page 98).
If there is still a problem, have the computer serviced.
The battery pack is either old or its operation time has been shortened by
repeatedly charging it when it was not completely discharged.
Action:
1. Check if the battery pack you are using has been charged for more than 2
hours by the power-off charging method.
2. If so, repeat the complete discharging and charging procedure three to six
times (see page 98).
Note: A fully charged battery gradually loses its power when not used for a
long period of time. If the battery pack is not used for a long period
of time, or if it is new, the battery does not reach full charge with
only one charging.
3. If the battery pack still discharges too soon, replace the battery pack with a
new one.
The battery-power status
indicator has turned off
although a fully charged
battery pack is installed in
the computer.
If there is still a problem, have the computer serviced.
The over-current protection device inside the battery pack has been activated.
Wait for several hours and try to use it again. If there is still a problem, replace
the battery pack or have the computer serviced.
Chapter 8. Solving Computer Problems
211
What If Your Computer Does Not Work?
Problem
The battery pack cannot
be fully charged in 3
hours by the power-off
charging method.
Action
The battery pack is over-discharged.
Action:
1. Turn off the computer.
2. Make sure that the over-discharged battery pack is in the computer.
3. Connect the AC Adapter to the computer and let it charge for approximately
7 hours.
The battery-charging
indicator is on, and the
battery-power status
indicator is blinking.
When you use the NiMH
battery pack, the
battery-power status
indicator blinks green,
yellow, orange, and then
green again.
If the Quick Charger (available as an option) is available, charge the
over-discharged battery pack.
A problem has occurred during the charging of the battery pack.
Check to see if the AC Adapter is correct for your computer.
Take the battery pack out of the compartment and let it cool for a while;
then charge it again.
If there is still a problem, have the computer serviced.
No battery status information is going from the battery pack to the computer.
Check that the storage switch on the battery pack is set to the on position
( | ). If it is set to the off position (O), slide it to on and repeat the
discharging and charging procedure several times (see page 98).
If the storage switch is set to the on position, take the battery pack out of
the compartment and let it cool for a while; then charge it again.
If the problem still occurs, slide the storage switch to the off position (O) and
then to the on position ( | ). Repeat the discharging and charging procedure
several times (see page 98).
Notes:
1. Use the tip of a ballpoint pen to slide the storage switch to the off
position (O) from the on position ( | ).
2. Do not slide the switch to the off position (O) for daily operations of your
computer. Otherwise, incorrect battery-power status will be reported.
If there is still a problem, have the computer serviced.
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What If Your Computer Does Not Work?
Diskette Drive Problems
Problem
The diskette drive in use
indicator stays on.
Action
If there is a diskette in the drive, verify that:
– There is nothing wrong with the diskette. Try a backup copy if you have
one.
– The diskette is inserted correctly (label up and metal-shutter end first) in
the diskette drive.
– The diskette contains the necessary files to start the system.
– There is nothing wrong with your application program (see page 215).
If the preceding items are correct, have the computer serviced.
If there is no diskette in the drive, have the computer serviced.
Mwave DSP Feature Problems
Problem
The Sound Blaster
support cannot be
enabled.
DOS games work slowly
in a Windows session.
The modem does not
work correctly.
Cause and action
It is probably because Mwave is being used for other functions, such as the
modem. Try disabling another function; then type MWGAMES ON MIN. The
MIN option will enable Sound Blaster support using the minimum possible
amount of Mwave resources.
Some DOS games run slower in a Windows DOS session than in native DOS.
Check the documentation of your game for special instructions about improving
performance. Configure Windows to use the VGA display driver rather than a
higher resolution or less efficient driver. Determine if your game allows you to
turn off “background music” and only play special effects.
Verify that:
The modem/fax port is securely installed.
The modem is correctly identified in your communication program.
A Windows error message
states that no MIDI device
is available.
A Windows error message
states that no WAV device
is available.
A modem error occurred.
A modem application is
not working.
A speaker phone
application does not work.
This is often caused by a conflict of the communication port address or
interrupt assignments or both.
This is often because of the DSP resources have been used up. Try stopping
some application that is using the DSP, and retrying the failing function.
This is often because of the DSP resources have been used up. Try stopping
some application that is using the DSP, and retrying the failing function.
Refer to the command reference in the Mwave ThinkPad window.
Verify that you have started your modem. Make sure you did not close it
instead of minimizing it. Verify that it was set to support the speed you are
trying to use.
Verify that you disabled the Audio button in the Audio Control.
Chapter 8. Solving Computer Problems
213
What If Your Computer Does Not Work?
Problem
Other problems.
Cause and action
The following is a list of failures that can cause other problems.
A compatibility problem exists between the Mwave feature and one or more
other adapters in the system.
To isolate a compatibility problem, remove other adapters from your system
and rerun the diagnostics while these adapters are removed.
The phone cabling configuration is not correct for your application.
The phone cabling is defective.
The phone is defective.
The audio cabling configuration is not correct for your application.
The audio cabling is defective.
The audio equipment is defective.
Infrared Communication Problems
Problem
The computer cannot
communicate with other
devices using the infrared
port on the computer.
Action
Verify that:
The infrared function is enabled and other choices are set correctly in the
ThinkPad Setup menu of the ThinkPad Features program (see page 35).
The communicating device is using an equivalent communication speed.
The infrared ports are cleaned and no spotty area exist.
No cable or electrical device is between the computer and the
communicating device.
Incorrect data is sent
between the computer
and device.
The distance and angle between the computer and the communicating
device are correct (see page 72).
Verify that:
The distance and angle between the devices are correct (see page 72).
The communicating device is using an equivalent communication speed.
There is no device radiating infrared rays, such as remote-controlled devices
or wireless headphones, near the computer or device.
Direct sunlight or fluorescent lamps are not near the computer or device.
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IBM ThinkPad 755CX User's Guide
What If Your Computer Does Not Work?
Software Problems
Problem
An application program
does not work correctly.
Action
To determine if a problem is caused by the software, verify that:
Your computer has the minimum memory required to use the software.
Refer to the manuals supplied with the software to verify this.
The software is designed to operate with your computer.
Other software works correctly with your computer.
The software you are using works correctly with another computer.
If you have received any error messages when using the application program,
refer to the manuals supplied with the software for a description of the
messages and a solution to the problem.
If the preceding items are correct and there is still a problem, contact your IBM
authorized reseller or IBM marketing representative for help.
Option Problems
Problem
An IBM option that was
just installed does not
work.
Action
Verify that:
The option is designed for the computer.
The option has been installed correctly by following the instructions supplied
with the option.
Other installed options or cables are not loose.
No I/O address or interrupt level conflict has occurred. Use the System
Info of the ThinkPad Features program.
An IBM option that used
to work no longer works.
If the test programs for the option did not find the problem, have the computer
and option serviced.
Verify that:
All the option hardware and cable connections are securely connected.
If the option came with its own test instructions, use those instructions to
test the option.
The serial port does not
work.
If the preceding items are correct and the test programs did not find the
problem, have the computer and option serviced.
Ensure that Serial port is set to Serial_1, Serial_2, Serial_3, or Serial_4 in the
ThinkPad Features program or Easy-Setup.
Chapter 8. Solving Computer Problems
215
What If Your Computer Does Not Work?
Problem
The PC Card does not
work.
Action
Verify that:
The serial addresses for the serial devices (serial port A, serial port B,
infrared ports, and Mwave telephony function) do not conflict with each
other. Check them in the ThinkPad Setup menu of the ThinkPad Features
program.
A serial address is reserved for the PC Card.
The PC Card is designed for the computer.
The software is suitable for use with the PC Card. See the instructions that
came with the PC Card.
If the PC Card has its own diagnostic instructions, use those instructions to test
it.
Keyboard, External Numeric Keypad, and Pointing Device Problems
Problem
All or some keys on the
system keyboard do not
work.
Action
If the problem occurs immediately after the computer returns to normal
operation from suspend mode, enter the power-on password. If a power-on
password is set, you must enter the password.
If the external keyboard is connected, the numeric keypad on the system
keyboard will not work.
If the external numeric keypad or the mouse is connected:
1. Turn off the computer.
2. Remove the external numeric keypad or the mouse.
3. Turn on the computer and try the keyboard operation again.
The pointer drifts when
the computer is turned on,
or after resuming normal
operation.
—or—
During computer
operation, the pointer
drifts when not using the
TrackPoint III.
216
If the keyboard problem is resolved, check the connection of the external
numeric keypad, external keyboard, or the mouse. If there is still a problem,
have the computer serviced.
Drifting is a characteristic of the TrackPoint III and is not a defect. The drifting
occurs for several seconds under the following conditions:
When
When
When
When
the computer is turned on.
resuming normal operation.
the TrackPoint III is pressed for a long period of time.
the environmental temperature changes.
Do not touch the TrackPoint III until the pointer stops moving.
IBM ThinkPad 755CX User's Guide
What If Your Computer Does Not Work?
Problem
The mouse or pointing
device does not work.
Action
Verify that the mouse or pointing-device cable is securely connected to the
computer.
Try using the TrackPoint III. If the TrackPoint III works, suspect the
externally attached pointing device.
If you are using Windows, make sure Computer is set as MS-DOS System
with APM. See page 177.
If you are using mouse that is not compatible with the IBM PS/2 Mouse,
disable the TrackPoint III using the ThinkPad Features program.
1. For OS/2 and Windows, see page 36. Select Setup,
Keyboard/Pointing Device; then click on disable for the TrackPoint III.
All or some keys on the
external numeric keypad
do not work.
All or some keys on the
external keyboard do not
work.
2. For DOS, see page 41.
Verify that the external numeric keypad is correctly connected to the computer.
Verify that:
The keyboard connector is connected to the correct side of the
keyboard/mouse connector.
The keyboard/mouse connector is correctly connected to the computer.
A number appears when
you type an alphabetic
character.
If the preceding items are correct, disconnect the keyboard/mouse connector
from the computer and verify that the operation of the system keyboard is
correct. If the system keyboard works, have the keyboard/mouse connector or
the external keyboard serviced.
The Numeric Lock indicator is on. Press and hold Shift; then press NumLk.
Chapter 8. Solving Computer Problems
217
What If Your Computer Does Not Work?
External Display Problems
Problem
The screen is blank.
Action
Verify that:
The power cord for the external display is plugged into a working electrical
outlet and into the external display.
The external display is turned on and the brightness and contrast controls
are adjusted.
The signal cable for the external display is plugged into the external-display
connector on the computer. Some signal cables might not fit into the
external-display connector because of the connector type.
The external display (CRT) is selected as the display device using the Fn
key function (see page 48) or the ThinkPad Features program (see
page 35).
The suspend option to enter suspend mode when the LCD is closed is
disabled. (See Power of ThinkPad Features program on page 37 or type
PS C D from the command prompt.)
Turn off the computer; then turn it on.
The screen is unreadable
or distorted.
If the preceding items are correct and the screen of the external display remains
blank, run the display tests described in the instructions supplied with the
external display. If the tests show the external display is OK, have the computer
serviced.
Verify that:
The ThinkPad display driver is installed correctly (see page 188).
The Display in the Windows Setup screen is set to your display resolution
type (see page 177).
To change or set up the external display, see “Attaching an External Display” on
page 165.
Wrong characters appear
on the screen.
When you use a DOS
application, the screen
image appears smaller
than the external display
size (755CX SVGA model
only).
218
If these are correct, run the tests described in the instructions supplied with the
external display. If the tests show the external display is OK, have the computer
serviced.
Verify that operating systems and application programs have been installed and
configured correctly.
If so, have the computer serviced.
This occurs to maintain the compatibility of DOS application. This is not a
problem.
IBM ThinkPad 755CX User's Guide
What If Your Computer Does Not Work?
Problem
When you use DOS Shell
or some kind of
application in the DOS
environment, the lines on
the screen are disordered.
(755CX SVGA model
only)
Action
Verify that:
If you are using DOS Shell and set the screen mode 800-by-600 resolution
by PS2 MODE3X command, do the following:
1. At the DOS Shell screen, select Options from the menu bar; then select
Display....
2. Select Graphics 30 lines Medium Resolution 1; then select OK.
The screen will recover.
If you are using other application than DOS Shell, do the following:
– At the DOS command prompt, type PS2 MODE3X OFF; then press
Enter.
Chapter 8. Solving Computer Problems
219
What If Your Computer Does Not Work?
Printer Problems
Problem
The printer does not work.
Action
Verify that:
The printer is turned on and ready to print.
The printer signal cable is connected to the correct connector on the
computer. (For the location of the printer connector, see “parallel connector”
on page 5.)
If the preceding items are correct and the printer still does not work, run the
tests described in the printer manual. If the tests show that the printer is OK,
have the computer serviced.
Intermittent Problems
Problem
The computer has an
intermittent problem.
Action
An intermittent problem can be difficult to find.
Check that all cables and cords are securely connected to the rear of the
computer and to the attached options.
If the problem occurs only when the computer is powered by a battery pack,
replace the battery pack with a fully charged one.
If the preceding items are correct and there is still a problem, make a note of
the problem and what the computer was doing when the problem occurred.
Then contact your IBM authorized reseller or IBM marketing representative for
help.
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IBM ThinkPad 755CX User's Guide
Getting Service
Listing Installed Options
When getting service, you might need to know which options you
have in your system. Check or write the names of your options
below.
IC DRAM Card
(2MB, 4MB, 8MB, or 16MB)
Option in the
Diskette Drive Compartment
DIMM
(4MB, 8MB, or 16MB)
DIMM Adapter
Internal Diskette Drive
Battery Pack
PC Cards
______MB Hard Disk Drive
Others
Chapter 8. Solving Computer Problems
221
Getting Service
Recording Identification Numbers
The following information is needed when obtaining repair services:
IBM Product Name
ThinkPad 755CX SVGA model
ThinkPad 755CX VGA model
Machine Type
Serial Number
The machine type and serial number 1 are located on the bottom
of the computer.
The machine type has a prefix of Type.
The serial number has a prefix of S/N.
1
222
IBM ThinkPad 755CX User's Guide
Getting Service
Getting Service
If you need further assistance, call your IBM authorized reseller or
IBM marketing representative.
When requesting service, describe the error message or problem to
the service representative. Error messages can help identify what
service action is required and help the service representative provide
quick and efficient service.
Important
During the warranty period, you may be responsible for repair
costs if the product damage was due to misuse, accident,
modification, unsuitable physical or operating environment, or
improper maintenance by you.
For your convenience, write the service phone numbers here.
Chapter 8. Solving Computer Problems
223
Getting Service
The IBM HelpClub: Another Great Choice (for European
Countries)
Yours for a free trial period.
Helpware
What's great about the HelpClub† is that once you're a member you
get Helpware†. If you intend to use your new ThinkPad at home or
for business, Helpware provides a complete range of services
designed to help you get the most out of your new computer. If you
work for a large company, Helpware can complement your own PC
support service—for example, by providing help after your company
service has closed down for the day.
When you register, Helpware offers you a full range of services,
including the following:
Helpline: helpful advice, day or night
First and foremost, that means you've got access to Helpline —
IBM's customer-friendly, round-the-clock technical support and
troubleshooting service, available just by your picking up the
phone. Complete peace of mind 24 hours a day, 7 days a week,
365 days a year.
Helpware Magazine: hints and tips for all
With your free membership of HelpClub you will receive a free
subscription to Helpware magazine. We like to say it's one of
the best PC magazines around, and you don't have to take our
word for it. It has already won two publishing awards and 8 out
of 10 HelpClub members tell us it's the only PC magazine they
need to read. It's attractively produced, packed with information,
and written in plain English, not technical gobbledegook.
HelpClub Privileges: lots of specials for members
HelpClub is an exclusive club for IBM users. You can become a
member for a free trial period to receive special offerings.
Helpware is also a source of special deals for IBM customers,
comprising an exclusive collection of offers and discounts.
†
Helpware and the HelpClub offer are subject to continued availability and may vary or may not be offered in all countries. Check with your local
IBM office for details.
224
IBM ThinkPad 755CX User's Guide
Getting Service
Join the HelpClub!
Call your country number below during office hours:
Austria
222 21145 7575
Belgium
02/542.5360
Denmark
45 93 45 45 lokal 4600
Finland
9800-6100
France
16-38 55 20 39
Germany
0231-9748-405
Italy
1678 36019
Luxembourg
02/542.5360
Netherlands
020 513 4700
Norway
66 99 95 95
Spain
(91) 563 10 01
Sweden
020-55 55 55
Switzerland
155 46 46
United Kingdom 0628 895222
For other countries: Contact your local IBM office for service
information.
Chapter 8. Solving Computer Problems
225
Getting Service
226
IBM ThinkPad 755CX User's Guide
Appendix A. Avoiding Hardware Conflicts
When options such as the AT adapter or application programs are
installed, the system might not operate correctly because of conflicts
in IRQ (interrupt level), I/O addresses, DMA channel, and memory
addresses.
To avoid these conflicts, you must be aware of hardware
requirements, such as IRQ and I/O addresses, for each option and
program as shown in their manuals. You also must check the
current resource allocations for the computer and the ThinkPad Dock
I or Dock II and select the available resource values.
If you are using OS/2 or Windows, do the following:
OS/2
WIN
1 Start the ThinkPad Features program.
2 Select ThinkPad Setup.
3 Select the icon you want to set up in the ThinkPad
Setup window.
4 Click on the appropriate resources (IRQ, DMA, or
Memory) to assign for the device.
These changes will become effective when computer power is
turned off and then on again.
DOS
When you are using DOS, do the following:
Use the PS2 command to change the values for devices.
Type PS2 ? at the command prompt; then press Enter.
PS2 command:
Page 41.
Copyright IBM Corp. 1995
227
Avoiding Hardware Conflicts
The following table summarizes the reserved system resources for
the computer and the ThinkPad Dock I or Dock II. Values in
parentheses are alternative values that are selectable in the
ThinkPad Features program, Easy-Setup, or application programs.
Memory
Address (Hex)
None
None
None
None
None
None
None
None
None
None
DMA
Channel
None
None
None
None
None
None
None
None
None
0 and 3
or
disable
System Resources
Timer
Keyboard
Serial port 1
Serial port 2
Serial port 3
Serial port 4
Parallel port 1
Parallel port 2
Parallel port 3
Infrared port
IRQ
0
1
4 (or disabled)
3 (or disabled)
4 (or disabled)
3 (or disabled)
7 (or disabled)
7 (or disabled)
5 (or disabled)
4 (or 3, 5, 10, 11,
15, disabled)
Diskette controller
Video controller
6
9
None
A0000–BFFFF
Mwave DSP device
5 (or 7, 10, 11,
15, disabled)
7 (or 5, 10, 11,
disabled)
None
3, 4, disabled
14
None
(Depends on the
type of PC Card)
8
12
None
I/O Address (Hex)
0040–0043
0060, 0064
03F8–03FF (or 02F8–02FF)
02F8–02FF (or 03F8–03FF)
03E8–03EE (or 02F8–02FF)
02E8–02EF (or 03F8–03FF)
03BC–03BE
0378–037A
0278–027A
01A0–01A7 (or 01B0–01B7,
01C0–01C7, 01D0–01D7)
02E8–02EF (or 03F8–03FF,
02F8–02FF, 03E8–03EF)
03F0–03F7
03B4–03B5, 03BA,
03C0–03C9, 03CA, 03CC,
03CE–03CF, 03D4–03D5,
03DA
2DF0, 2DF1, 46E8
0030, 4E30, BE30, CE30
None
0220, 0240
None
None
None
None
C0000–DFFFF
0300, 0330
03F8, 02F8, 03E8, 02E8
01F0–01F7, 03F6–03F7
03E0–03E3
None
0 (or 1,
6, 7)
0 (or 1,
6, 7)
None
None
None
None
None
None
None
0070–0071
0060, 0064
None
None
13
None
None
None
Sound Blaster
MIDI
Modem
Hard disk drive
PCMCIA controller
PC Card
Real-time clock
TrackPoint III or
mouse
Math coprocessor
exception
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IBM ThinkPad 755CX User's Guide
2
None
Avoiding Hardware Conflicts
System Resources
Options in Dock I or
Dock II
SCSI controller
IRQ
2, 3, 4, 5, 7, 9,
10, 11, 15
AD/VC adapter
Notes:
None
Memory
Address (Hex)
CA000–CBFFF
C8000–C9FFF
CE000–CFFFF
DE000–DFFFF
None
I/O Address (Hex)
(Depends on the installed
option device)
DMA
Channel
0, 1, 2,
3, 5, 6, 7
92E9
None
Selected values are assigned to a serial port and a parallel port of the computer.
Selectable in the ThinkPad Features program or PS2 command.
VL-Bus master is used.
The IRQ for PC Card depends on the PC Card type.
Selectable in the Resource Map Utility program. See “Software Considerations for DOS” on page 235.
Select an IRQ and the memory addresses with a jumper and switch on the main board of Dock I/Dock II.
See the Dock I User's Guide or Dock II User's Guide. Do not select Disabled when OS/2 is used.
The 755CX SVGA model does not support this option.
Appendix A. Avoiding Hardware Conflicts
229
Avoiding Hardware Conflicts
230
IBM ThinkPad 755CX User's Guide
Appendix B. Advanced Information for PC Cards
This appendix describes the Auto Configurator program, which
automatically enables the PC Card without the device driver supplied
with your PC Card being installed. It also explains some
considerations you should be aware of when using your PC Card.
Auto Configurator for the PC Card Director Program
To install the PCMCIA
device driver:
Page 183.
The Auto Configurator makes it possible for you to avoid installing
the device drivers for some PC Cards. When installing an operating
system, install the PCMCIA device driver that is on the PCMCIA
Features Diskette so you can use the Auto Configurator program.
When Auto Configurator is installed, the following line is added to
the CONFIG.SYS file:
For OS/2:
DEVICE=[DRIVE][PATH]AUTODRV2.SYS [DRIVE][PATH]AUTODRV2.INI
For DOS or Windows:
DEVICE=[DRIVE][PATH]AUTODRV.SYS [DRIVE][PATH]AUTODRV.INI
The basic structure of the data file for Auto Configurator,
AUTODRV2.INI for OS/2 or AUTODRV.INI for DOS or Windows, is
as follows:
[Card name]
CardID=card name
Keyword1=data1,Keyword2=data2,...
Keyword1=data1,Keyword2=data2,...
Keyword1=data1,Keyword2=data2,...
Keyword1=data1,Keyword2=data2,...
Copyright IBM Corp. 1995
231
Advanced Information for PC Cards
Example When a Modem Card Is Used
When a modem card is installed in the PC Card slot, the Auto
Configurator assigns interrupt request levels and I/O window from the
information in the following data file and tuple data of the modem
card:
[MODEM]
CardID=MODEM,MD24X
Port1=3F8,IRQ=4
Port1=2F8,IRQ=3
Port1=3E8,IRQ=3
Port1=2E8,IRQ=3
Starting from the first “Port1” line, the Auto Configurator tries to
assign the resources from I/O window X'3F8' and interrupt request
level 4 for the modem. If the Auto Configurator finds resources that
are not occupied by the system, it assigns them to the modem. If
I/O port address X'3F8' is already occupied by the system serial
port, Auto Configurator cannot assign the first “Port1” line
([Port1=3F8,IRQ=4]) to the modem. It would then try to assign the
next “Port1” line ([Port1=2F8,IRQ=3]) to the modem.
The CardID parameter is used to identify the modem card that does
not contain enough tuple data. If the Auto Configurator cannot
recognize the modem card installed into the PC Card slot, you must
add the modem card identification indicated in the level 1
version/product information tuple. The identification must be written
using up to five uppercase ASCII characters. If you want to display
this character string, use the DOS PC Card Utility (EZPLAY.EXE),
Windows PC Card Utility (EZPLAY.EXE), or OS/2 PC Card Utility
(EZPLAY2.EXE). The preceding example identifies the modem card
as “MD24X.” Make sure that you include the character strings,
following “MODEM.” When you use OS/2, you can include up to five
character strings, following “MODEM.” The Windows PC Card Utility
allows you to automatically register the character string by selecting
the Register button on the Card Information screen.
Example When the Auto Configurator Is Not Used
When you do not need to use the Auto Configurator, add the
following line after the “CardID” parameter:
Option=Ignore
The Auto Configurator does not assign resources to the PC Card
when this line is added.
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IBM ThinkPad 755CX User's Guide
Advanced Information for PC Cards
Example of the Memory Area for the Card Services and 3270
Notes:
1. The Auto Configurator for OS/2
supports modem and data/fax
modem PC Cards.
2. The Auto Configurator for DOS
and Windows supports modem,
data/fax modem, and 3270
emulation PC Cards.
The following is an example of the memory area specified by the
Card Services memory area and 3270 data file:
A Resource Map Utility statement:
DEVICE=C:\EZPLAY\DICRMU 1.SYS /MA=D
-D7FF
Lines from the 3270 data file:
[327 ]
CardID=327
Port1=2D ,IRQ=9,Memory1=CE
Port1=6D ,IRQ=9,Memory1=D
The keyword “Memory1” is specified by the base address of the
memory window given as a hexadecimal segment address.
Memory window 1 must be within the range of the memory area
reserved for Card Services. The Card Services memory area is
specified using the Resource Map Utility.
In the preceding example, the memory area for Card Services is
from X'D000' to X'D7FF' and the 3270 memory area is specified
by “Memory1” of the data file. The memory area (X'CE00') for
“Memory1” in the first “Port1” line is not within the area (“MA=”
parameter) specified for the Card Services memory. As a result, the
Auto Configurator cannot assign the 3270. It attempts to assign the
3270 from details of the second “Port1” line.
Carefully check each application program you use so that the
memory area is specified by the “MA=” parameter.
Appendix B. Advanced Information for PC Cards
233
Advanced Information for PC Cards
Operational Considerations for PCMCIA
Consider the following according to your operating system:
OS/2
Software Considerations for OS/2
The following is a sample of the CONFIG.SYS file for OS/2:
:
BASEDEV=PCMCIA.SYS /P ← Rule 1
BASEDEV=ICRMU 1.SYS ← Rule 1
BASEDEV=IBM2SS 1.SYS /D ← Rule 1
DEVICE=C:\OS2\MDOS\VPCMCIA.SYS
DEVICE=C:\THINKPAD\COM.SYS
DEVICE=C:\THINKPAD\AUTODRV2.SYS C:\THINKPAD\AUTODRV2.INI
:
DEVICE=PC_Card_Client_device_driver ← Rule 2
:
DEVICE=C:\THINKPAD\$ICPMOS2.SYS ← Rule 3
You might need to update the CONFIG.SYS file after you have
installed the PCMCIA software. If you make any changes to your
CONFIG.SYS file, keep in mind the following rules for PCMCIA
software:
Rule 1 The Card Services driver (PCMCIA.SYS) must be listed
before any other PCMCIA drivers. The Resource Map Utility
(ICRMU01.SYS) and Socket Services driver
(IBM2SS01.SYS) must be listed in this order. These
modules must be listed just after the Card Services driver.
Rule 2 The PC Card Client device drivers must be listed after the
Socket Services (IBM2SS01.SYS) and before the Power
Management Utility ($ICPMOS2.SYS).
Rule 3 The Power Management Utility ($ICPMOS2.SYS) should be
listed at the end of the CONFIG.SYS file.
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IBM ThinkPad 755CX User's Guide
Advanced Information for PC Cards
DOS
Software Considerations for DOS
Keep in mind the following considerations when using PC Cards:
Using a Software EMS with the PC Card
Warning:
When you update the EMM386
parameter in the CONFIG.SYS file
using RAMSETUP, set the same
address range as the one
specified by the “/MA=”
parameter of DICRMU01.SYS as
“Adapter”.
To use a software EMS without the Dock I or Dock II:
During the installation of the PCMCIA device driver, your system
automatically sets up the memory space so that you can use
EMS with a PC Card.
To use a software EMS with an adapter card in the Dock I or
Dock II:
You can specify a memory area in your CONFIG.SYS file so
that the memory areas for the PC Card, adapter, and EMS do
not conflict with one another. To determine the
required-memory space of the PC Card, refer to the manual that
came with the PC Card. You should allocate at least 34KB of
memory to the DOS Card Services (IBMDOSCS.SYS).
The hardware interrupt level of the PC Card and the adapter
must be assigned exclusively. To avoid a conflict, use the
Resource Map Utility (DICRMU01.SYS) with the following
parameters:
DEVICE= [drive:] [path] DICRMU 1.SYS
[[/MA=mmmm-mmmm[,mmmm]] [/IX=IRQ level[,IRQ level]]]
/MA=
The segment address range that is allocated to the
memory window for a PC Card.
mmmm-mmmm
The address range of the PC Card. The range can be
specified from X'C000' to X'DFFF'. One or more
address ranges can be specified with a comma (,) to
separate the address ranges.
/IX=IRQ level
The interrupt request level that cannot be used by the
PC Card. You can specify levels 3, 4, 5, 7, 9, 10, 11,
12, 14, and 15. One or more of these levels can be
specified with a single DEVICE command.
Appendix B. Advanced Information for PC Cards
235
Advanced Information for PC Cards
Note:
The procedure assumes that you
are using “EMS386.EXE” as an
EMS device driver.
The following example shows the procedure for memory allocation
when an adapter that requires 32KB of memory is installed (the
required-memory space of the adapter cards might vary from one
card to another).
1. Open your CONFIG.SYS file using a text editor.
2. Find the DEVICE statement containing “EMM386.EXE.”
3. Change the statement to:
DEVICE=C:\DOS\EMM386.EXE 1 24 FRAME=D
X=C8 -CFFF
X=C
-C7FF
4. Find: DEVICE=C:\DICRMU 1.SYS
Note:
The memory range specified by the
“MA=” parameter must be the same
as or included in the memory range
specified by the “X=” parameter.
5. Change this statement to:
DEVICE=C:\DICRMU 1.SYS /MA=C8
-CFFF /IX=11
6. Save the changes in your CONFIG.SYS file; then restart the
system.
Interrupt request level 11 cannot be used by the PC Card. After you
complete these steps, the memory map will be as follows:
C000:0
Adapter
in expansion unit
32KB
PCMCIA drivers
32KB
EMS
64KB
C800:0
D000:0
D800:0
E000:0
DOS
Examples of Hardware Configurations
The following examples show memory allocations and notices for
using various PC Cards:
Using PC Cards and SCSI adapter installed in the Dock I:
– Modify your CONFIG.SYS file as follows:
:
DEVICE=C:\DOS\EMM386.EXE NOEMS X=C
-CFFF
:
DEVICE=C:\THINKPAD\DICRMU 1.SYS /MA=C
-C9FF,CC
236
IBM ThinkPad 755CX User's Guide
-CFFF
Advanced Information for PC Cards
Note:
For more information, see Chapter 5
of the Dock I User's Guide.
This maximizes the memory address range that is allocated for the
PC Cards and SCSI adapter in the Dock I. This assumes the Dock
I SCSI adapter is at the default allocation (X'CA000'—X'CBFFF').
Using several PC Cards
– Modify the configuration file as in the following example
(IBM token ring card + IBM Ethernet card + IBM 3270 card
+ modem + EMM386):
< CONFIG.SYS >
DEVICE=C:\DOS\EMM386.EXE NOEMS X=C3 -CFFF ← modified
:
DEVICE=C:\THINKPAD\IBMDSS 1.SYS
DEVICE=C:\THINKPAD\IBMDOSCS.SYS
DEVICE=C:\THINKPAD\DICRMU 1.SYS /MA=C3 -CFFF ← modified
DEVICE=C:\THINKPAD\$ICPMDOS.SYS
DEVICE=C:\DOS\POWER.EXE
DEVICE=C:\THINKPAD\AUTODRV.SYS C:\THINKPAD\AUTODRV.INI
DEVICE=C:\THINKPAD\DISKDRV.SYS
:
:
DEVICE=C:\LSP\PROTMAN.DOC /I:C:\LSP ← LSP adds this line
DEVICE=C:\LSP\PCMNICCS.DOC
← LSP adds this line
DEVICE=C:\LSP\IBMTOKCS.DOC
← LSP adds this line
DEVICE=C:\LSP\DXMA MOD.SYS
1
← LSP adds this line
DEVICE=C:\LSP\DXME MOD.SYS
← LSP adds this line
DEVICE=C:\LSP\DXMT MOD.SYS O=N
← LSP adds this line
:
(LSP: LAN Support Program)
<
PROTOCOL.INI (C:\LSP\PROTOCOL.INI) >
[IBMTOKCS_NIF]
:
RAM = Xc4
RAMSIZE = 16
:
MMIO = Xcc
[PCMNICCS_NIF]
:
RAM = Xc8
:
←
modified
←
modified
←
modified
Appendix B. Advanced Information for PC Cards
237
Advanced Information for PC Cards
For the preceding example, the memory map will be as follows:
C000:0
EMS memory
C300:0
C400:0
IBM Card Service s
Token-ring
shared RAM
C800:0
CC00:0
Ethernet
shared RAM
Token-ring
memory mapped I/O
CE00:0
3270 shared RAM
D000:0
EMS memory
E000:0
DOS
Updating the CONFIG.SYS File
The following is a sample of the CONFIG.SYS file for DOS:
:
DEVICE=C:\DOS\EMM386.EXE RAM 1 24 frame=D
X=C8 -CFFF ← Rule 1
:
DEVICE=C:\THINKPAD\IBMDSS 1.SYS /D ← Rule 2
DEVICE=C:\THINKPAD\IBMDOSCS.SYS ← Rule 2
DEVICE=C:\THINKPAD\DICRMU 1.SYS /MA=C8 -CFFF ← Rule 2
DEVICE=C:\THINKPAD\$ICPMDOS.SYS ← Rule 2
DEVICE=C:\THINKPAD\AUTODRV.SYS C:\THINKPAD\AUTODRV.INI
DEVICE=C:\THINKPAD\DISKDRV.SYS
DEVICE=C:\DOS\POWER.EXE ← Rule 3
:
DEVICE=PC_Card_Client_device_driver ← Rule 4
You might need to update the CONFIG.SYS file after you have
installed the PCMCIA software. If you make any changes to your
CONFIG.SYS file, keep in mind the following rules for PCMCIA
software:
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IBM ThinkPad 755CX User's Guide
Advanced Information for PC Cards
Rule 1 For you to use the software EMS driver (EMM386.EXE) with
the PCMCIA drivers, the “X=” parameter must be specified
for EMM386.EXE. This parameter specifies the memory
range that is used by the PCMCIA drivers. (For more
information see “Using a Software EMS with the PC Card”
on page 235.)
Rule 2 The Socket Services driver (IBMDSS01.SYS), Card Services
driver (IBMDOSCS.SYS), Resource Map Utility
(DICRMU01.SYS), and Power Management Utility
($ICPMDOS.SYS) must be listed in this order.
Rule 3 The Advanced Power Management driver (POWER.EXE)
must be specified in the CONFIG.SYS file. This is installed
with DOS.
Rule 4 The PC Card Client device drivers must be listed after all
other PCMCIA drivers.
If you do not use the PC Card and need more application memory
area, see “Releasing the PCMCIA Memory Area” on page 240.
Appendix B. Advanced Information for PC Cards
239
Advanced Information for PC Cards
DOS
Note:
These procedures do not apply to
the device drivers supplied with your
PC Card.
Releasing the PCMCIA Memory Area
If you are using DOS 7.0 or later but not are using the PC Card,
you can use the PCMCIA memory area as your application program
memory area. There are two ways to make this available for
application programs:
Use the PCMCIAOF command.
Use the DOS Multiple Configuration Function.
Using the PCMCIAOF command: Type PCMCIAOF at the
command prompt (usually C:>). This converts the PCMCIA
DEVICE statements to comments.
The CONFIG.SYS file will look like this:
DEVICE=C:\DOS\EMM386.EXE 1 24 frame=D
X=C8 -CFFF
:
REM DEVICE=C:\THINKPAD\IBMDSS 1.SYS /D
REM DEVICE=C:\THINKPAD\IBMDOSCS.SYS
REM DEVICE=C:\THINKPAD\DICRMU 1.SYS /MA=C8 -CFFF
REM DEVICE=C:\THINKPAD\$ICPMDOS.SYS
REM DEVICE=C:\THINKPAD\AUTODRV.SYS C:\THINKPAD\AUTODRV.INI
REM DEVICE=C:\THINKPAD\DISKDRV.SYS
DEVICE=C:\DOS\POWER.EXE
:
DEVICE=PC_Card_Client_device_driver
If you want to reset the PCMCIA memory area so you can use a PC
Card, enter PCMCIAON at the command prompt.
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IBM ThinkPad 755CX User's Guide
Advanced Information for PC Cards
Note:
See the sections in the DOS User's
Guide about using the DOS
operating system and configuring
your system using multiple
configurations for more information
about the DOS Multiple
Configuration Function.
Using the DOS Multiple Configuration Function: Use the DOS
Multiple Configuration Function to change the CONFIG.SYS file, and
add the choice of loading the PCMCIA device driver.
The CONFIG.SYS file should look like this:
[MENU]
MENUITEM=DLS, Load DOS LAN Services Client
MENUITEM=INTLNK, Load InterLnk Client
MENUITEM=CPSW, Load Code Page Switching
MENUITEM=PCMCIA, Load IBM PCMCIA drivers
MENUCOLOR=7,1
MENUDEFAULT=DLS,2
:
[COMMON]
DEVICE=C:\DOS\HIMEM.SYS
DEVICE=C:\DOS\EMM386.EXE ....
:
[DLS]
DEVICEHIGH=C:\NET\protman.dos /i:C:\NET
DEVICEHIGH=C:\NET\dlshep.sys
DEVICEHIGH=C:\NET\ibmtok.dos
[INTLNK]
DEVICEHIGH=C:\DOS\INTERLNK.EXE
[PCMCIA]
DEVICE=C:\THINKPAD\IBMDSS 1.SYS /D
DEVICE=C:\THINKPAD\IBMDOSCS.SYS
DEVICE=C:\THINKPAD\DICRMU 1.SYS /MA=C8 -CFFF
DEVICE=C:\THINKPAD\$ICPMDOS.SYS
DEVICE=C:\THINKPAD\AUTODRV.SYS C:\THINKPAD\AUTODRV.INI
DEVICE=C:\THINKPAD\DISKDRV.SYS
[COMMON]
DEVICEHIGH=C:\DOS\ANSI.SYS
SHELL=C:\DOS\COMMAND.COM /P /E:512
:
Appendix B. Advanced Information for PC Cards
241
Advanced Information for PC Cards
WIN
Software Considerations for Windows
If you are using Windows, specify the memory area for Windows so
it does not conflict with the memory area for the PCMCIA device
drivers. After completing the installation for Windows, update your
SYSTEM.INI file as follows:
1. Open your CONFIG.SYS file using a text editor.
2. Find:
DEVICE= [drive:][path] DICRMU 1.SYS /MA=mmmm-mmmm
3. Note the address range of the PCMCIA device drivers
(mmmm-mmmm); then close the CONFIG.SYS file and open
the SYSTEM.INI file of Windows.
4. Add the following line to the [386Enh] section of the
SYSTEM.INI file:
EMMEXCLUDE=mmmm-mmmm
The parameters for “/MA” and “EMMEXCLUDE” must be the
same.
5. Close the SYSTEM.INI file.
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IBM ThinkPad 755CX User's Guide
Appendix C. Additional Information for Mwave DSP Feature
Note:
In some countries, the Mwave
telephony functions are available
only after the DAA/Telephony Kit
option is installed.
This appendix provides detailed information about the ThinkPad
Mwave DSP Features.
Audio Information
This section provides information about the ThinkPad audio features.
Sound
The Mwave DSP features provide support for Windows Version 3.11
audio applications that comply with the Windows MultiMedia
Extensions (MME) for audio, for example, Windows Sound Recorder
and Windows Media Player that are shipped with Windows Version
3.11.
In general, recording audio music and speech at higher quality
requires more disk storage. The following table shows some typical
values for various sampling rates:
Copyright IBM Corp. 1995
Sample
Rate
44.1 KHz
Sample
Size
16 bits
22.05 KHz
16 bits
11 KHz
16 bits
9.6 KHz
14 bits
8.0 KHz
8 bits
Frequency
Range
20 Hz — 20
KHz
20 Hz — 10
KHz
20 Hz — 5
KHz
200 Hz — 4
KHz
200 Hz — 4
KHz
Signal/Noise
Ratio
80 dB
Remarks
80 dB
< CD quality
80 dB
AM quality
60 dB
Toll quality
60 dB
Toll quality
CD quality
243
Advanced Information for Audio Function
Mwave MIDI Overview
Mwave MIDI Synthesizer Overview
The Mwave audio features can be a music synthesizer, creating
realistic instrument sounds from a sequence of MIDI commands.
The MIDI standard defines a very compact representation for music.
MIDI is composed of a sequence of commands representing musical
events, such as a key press on a music keyboard.
The Mwave Windows Audio Device Driver provides a sampled sound
MIDI synthesizer that exceeds the Base Multitimbral requirements of
the MPC 1 and MPC 2 specifications.
The Mwave synthesizer is enhanced with a QSound** process.
QSound is a signal processing technique used to deceive the
acoustic response system (hearing) of a listener. Audio from a
stereo speaker system that has been processed by QSound can give
the listener the perception that the speakers are displaced much
further to the listener's left and right than they actually are.
This is particularly useful for a personal computer system, in which
table space is limited, and a small set of speakers are located
immediately adjacent to the computer. The angular displacement of
the speakers to the listener's left and right is ordinarily not enough to
produce a decent stereo effect. But with QSound processing, the
listener can perceive sound coming from a variety of directions,
some of which are significantly further to the left and right than the
actual location of the speakers. The net result is a significantly
improved stereo effect.
To optimize the QSound effect, sit directly in front of the computer
with the speakers equally distant from both sides of the computer.
Understanding the MIDI Mapper
The MIDI Mapper is a program included with Microsoft Windows that
interacts with the Mwave Windows Synthesizer Device Driver to
control the way sounds are created on your Mwave feature. In
Windows MIDI applications allowing you to specify a MIDI output
device, select the Windows MIDI Mapper as the output device rather
than sending output to the Mwave driver directly.
The MIDI Mapper controls which of the 16 MIDI channels to send to
the Mwave feature for playback. The MPC audio specification
describes two types of synthesizers. A BASE Multitimbral
synthesizer transmits data on MIDI channels 13–16 and supports 8
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IBM ThinkPad 755CX User's Guide
Advanced Information for Audio Function
simultaneous voices (8 notes at once, each of which can come from
a different instrument). An EXTENDED Multitimbral synthesizer
transmits data on MIDI channels 1–10 and supports 32 simultaneous
voices.
The Mwave feature supplies the following MIDI Mappers for selecting
which MIDI format to use for Mwave:
Mwave EXT GM For Mwave MIDI synthesizer channels
1–10
Mwave Base GM For Mwave MIDI synthesizer channels 13–16
The MPC standard requires authors to provide two versions of every
MIDI composition stored in the same file. Channels 1–10 hold the
version written for Extended Multitimbral synthesizers, whereas
channels 13–16 hold the version written for Base Multitimbral
synthesizers.
Most MIDI files included with Windows applications follow this
standard of containing two versions of each composition. This is
why the Mwave MIDI synthesizer comes with both Base and
Extended MIDI Mapper setups. If all channels were played at once,
both versions of a MIDI composition would play at the same time.
The Mwave Windows synthesizer usually sounds best when the
Mwave EXT GM setup is selected in the MIDI Mapper.
If you have a MIDI file that is not producing sound on your Mwave
feature, MIDI commands may be being sent on a set of channels the
MIDI Mapper is not responding to. Try using the Windows MIDI
Mapper to switch the setup between Mwave Base and Mwave
Extended Multitimbral modes. This lets you see if the MIDI
commands in the file are provided for only one of the two modes.
Other MIDI Controls
The Mwave feature's MIDI synthesizer recognizes several types of
control information in the MIDI data stream:
Key velocity
The harder the key is pressed, the louder the note
sounds.
Main volume This is usually controlled by a knob on a MIDI
keyboard. It is received on control number 7.
Pitch bend
This can be used to mimic the sound of a whammy
bar on a guitar and is usually controlled by a thumb
wheel on a MIDI keyboard. Note pitch can be varied
±2 semitones.
Appendix C. Additional Information for Mwave DSP Features
245
Advanced Information for Audio Function
246
IBM ThinkPad 755CX User's Guide
Pan
The Mwave feature's MIDI synthesizer uses QSound
to implement pan. By using QSound, the position of
each channel's instrument is not limited by the
position of the speakers. It is received on control
number 10.
Vibrato
Also referred to as modulation, this control produces
rapid, small changes in the pitch of a note and is
usually controlled by a thumb wheel on a MIDI
keyboard. Vibrato depth can be varied ±2 semitones.
It is received on control number 1.
Sustain
Each note of an instrument has an envelope that
describes the loudness of the note during attack,
decay, sustain, and release periods. Some MIDI
keyboards can be used with a pianolike sustain pedal
that prolongs the sustain period to mimic holding a
note. It is received on control number 64.
Additional Information for Telephony Function
Telephony Information
This section provides additional information about the ThinkPad
telephony features.
United States Telephone Consumer Protection Act of 1991
(Facsimile Devices)
The Telephone Consumer Protection Act of 1991 makes it unlawful
for any person to use a computer or other electronic device to send
any message via a telephone facsimile machine unless such
message clearly contains, in a margin at the top or bottom of each
transmitted page or on the first page of the transmission, the date
and time it is sent and an identification of the business, other entity,
or individual sending the message and the telephone number of the
sending machine or such business, other entity, or individual.
In order to program this information into your facsimile, you should
refer to the accompanying fax software package.
Appendix C. Additional Information for Mwave DSP Features
247
Additional Information for Telephony Function
248
IBM ThinkPad 755CX User's Guide
Appendix D. Features and Specifications
This appendix describes features and specifications for the computer.
For more information, refer to the Technical Reference manual.
Features
Microprocessor
Intel** Pentium** Processor 75MHz
256KB external cache memory
Memory
Onboard (built-in): 8MB RAM
Optional:
– 2MB, 4MB, 8MB, and 16MB IC DRAM cards
– 4MB, 8MB, and 16MB DIMMs with DIMM adapter
Storage devices
2.5-inch removable hard disk drive
3.5-inch removable diskette drive
Display
TFT color LCD, supporting up to 65 536 colors
10.4 inches (when measured diagonally)
SVGA (800-by-600 resolution) on the LCD of the 755CX SVGA
model, or VGA (640-by-480) on the LCD of the 755CX VGA
model
SVGA (1024-by-768 and 800-by-600 resolution) on the external
display
Brightness control
Keyboard
84-key, 85-key, or 89-key
TrackPoint III
Fn key function
External interface
Serial connector (EIA-RS232D)
Parallel connector (Centronics)
External input-device connector
External-display connector
Copyright IBM Corp. 1995
249
Features and Specifications
PCMCIA slots (accept two Type I or Type II PC Cards, or one
Type III PC Card)
Headphone jack
Microphone/line-in jack (supports a dynamic microphone or a
self-battery-powered condenser microphone)
Fax/modem port (in some countries, available as an option)
Infrared ports
System bus
240-pin, 16-bit AT bus connector
250
IBM ThinkPad 755CX User's Guide
Features and Specifications
Specifications
Size
Width: 297 mm (11.7 in.)
Depth: 210 mm (8.3 in.)
Height: 49.8 mm (1.96 in.)
Weight
Minimum configuration with:
lithium ion battery pack: approximately 2.75 kg (6.1 lb)
NiMH battery pack: approximately 2.9 kg (6.4 lb)
Environment
Note:
When you charge the lithium ion
battery pack, its temperature must
be at least 10°C (50°F).
Temperature (under altitudes of 2438 m (8000 ft)):
– Operating1 5° to 35°C (41° to 95°F)
– Operating2 10° to 35°C (50° to 95°F)
– Non-operating: 5° to 43°C (41° to 109°F)
Relative Humidity:
– Operating1 8% to 95%
– Operating2 8% to 80%
Maximum altitude: 3048 m (10 000 ft)3
– Maximum temperature at 3048 m (10 000 ft): 31.3°C
(88° F)
Heat output
Approximately 136.5 British thermal units (BTUs) per hour (35.0
watts)
Electrical (AC Adapter)
Sine-wave input, at 50 to 60 Hz, is required
The input rating of the AC Adapter: 100–240 V ac, 50/60 Hz.
Battery pack
Lithium ion battery pack:
– Nominal voltage: 10.8 V dc
– Capacity: 2.8 AH
NiMH battery pack:
– Nominal voltage: 8.4 V dc
– Capacity: 3.5 AH
1
With no diskette in drive.
With diskette in drive.
3 With no pressurized condition.
2
Appendix D. Features and Specifications
251
Features and Specifications
IBM Power Cords
For your safety, IBM provides a power cord with a grounded
attachment plug to use with this IBM product. To avoid electrical
shock, always use the power cord and plug with a properly grounded
outlet.
IBM power cords used in the United States and Canada are listed by
Underwriters Laboratory (UL) and certified by the Canadian
Standards Association (CSA).
For units intended to be operated at 115 volts: Use a UL-listed and
CSA-certified cord set consisting of a minimum 18 AWG, Type SVT
or SJT, three-conductor cord, a maximum of 15 feet in length and a
parallel blade, grounding-type attachment plug rated 15 amperes,
125 volts.
For units intended to be operated at 230 volts (in the U.S.): Use a
UL-listed and CSA-certified cord set consisting of a minimum 18
AWG, Type SVT or SJT, three-conductor cord, a maximum of 15 feet
in length and a tandem blade, grounding-type attachment plug rated
15 amperes, 250 volts.
For units intended to be operated at 230 volts (outside the U.S.):
Use a cord set with a grounding-type attachment plug rated 15
amperes (minimum), 250 volts. The cord set should be marked
<HAR> and have the appropriate safety approvals for the country in
which the equipment will be installed.
IBM power cords for a specific country are usually available only in
that country:
252
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Features and Specifications
IBM Power
Cord
Part Number
25H2205
25H2207
25H2219
25H2209
25H2211
25H2213
25H2215
25H2221
25H2223
25H2225
85G6665
Used in These Countries
Argentina, Australia, New Guinea, New Zealand,
Papua, Paraguay, Uruguay
Bahamas, Barbados, Bermuda, Bolivia, Canada,
Cayman Islands, Colombia, Costa Rica, Dominican
Republic, Ecuador, El Salvador, Guatemala, Guyana,
Haiti, Honduras, Jamaica, Korea (South), Mexico,
Netherlands Antilles, Nicaragua, Panama, Peru,
Philippines, Saudi Arabia, Suriname, Taiwan, Trinidad
(West Indies), United States of America, Venezuela
Thailand
Austria, Belgium, Bulgaria, Czech Republic, Egypt,
Finland, France, Germany, Greece, Hungary, Iceland,
Indonesia, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Spain, Sweden, Turkey, former
Yugoslavia
Denmark
Bangladesh, Pakistan, South Africa, Sri Lanka
Abu Dhabi, Albania, Antigua, Bahrain, Brunei, Dubai,
Fiji, Hong Kong, India, Ireland, Kenya, Kuwait,
Macao, Malaysia, Nigeria, Oman, People's Republic
of China, Qatar, Singapore, United Kingdom
Switzerland
Chile, Italy
Israel
Japan (2-pin)
Appendix D. Features and Specifications
253
Features and Specifications
Diskette Standards
To get the best performance from your diskette drives, use
high-quality diskettes (such as IBM diskettes) that meet or exceed
the following standards:
1MB, 3.5-inch, unformatted diskette:
ANSI (American National Standards Institute) X3.137
ISO (International Standards Organization) 8860
ECMA (European Computer Manufacturers Association) 100
2MB, 3.5-inch, unformatted diskette:
ANSI X3.171
ISO 9529
ECMA 125
Note:
In some country, 4MB diskettes can
be used when the diskette drive
option is installed.
254
IBM ThinkPad 755CX User's Guide
4MB, 3.5-inch, unformatted diskette:
ANSI Standard (under proposal at the time of printing)
ISO 10994 (Type 303)
ECMA 147
Appendix E. Product Warranties and Notices
International Business Machines Corporation
Armonk, New York 10504
Statement of Limited Warranty
The warranties provided by IBM in this Statement of Limited Warranty apply only to
Machines you originally purchase for your use, and not for resale, from IBM or an IBM
authorized reseller. The term “Machine” means an IBM machine, its features,
conversions, upgrades, elements, or accessories, or any combination of them.
Machines are subject to these terms only if purchased in the United States or Puerto
Rico, or Canada, and located in the country of purchase. If you have any questions,
contact IBM or your reseller.
Machine: IBM ThinkPad 755CX except the Battery Pack
Warranty Period*: Three Years
*Elements and accessories are warranted for three months. Contact your place
of purchase for warranty service information.
Production Status
Each Machine is manufactured from new parts, or new and serviceable used parts
(which perform like new parts). In some cases, the Machine may not be new and may
have been previously installed. Regardless of the Machine's production status, IBM's
warranty terms apply.
The IBM Warranty
IBM warrants that each Machine 1) is free from defects in materials and workmanship
and 2) conforms to IBM's Official Published Specifications. IBM calculates the
expiration of the warranty period from the Machine's Date of Installation. The date on
your receipt is the Date of Installation, unless IBM or your reseller informs you
otherwise.
During the warranty period, IBM or your reseller will provide warranty service under
the type of service designated for the Machine and will manage and install engineering
changes that apply to the Machine. IBM or your reseller will specify the type of
service.
For a feature, conversion, or upgrade, IBM or your reseller may require that the
Machine on which it is installed be 1) the designated, serial-numbered Machine and 2)
at an engineering-change level compatible with the feature, conversion, or upgrade.
Some of these transactions (called “Net-Priced” transactions) may include additional
parts and associated replacement parts that are provided on an exchange basis. All
removed parts become the property of IBM and must be returned to IBM.
Replacement parts assume the remaining warranty of the parts they replace.
If a Machine does not function as warranted during the warranty period, IBM or your
reseller will repair or replace it (with a Machine that is at least functionally equivalent)
without charge. If IBM or your reseller is unable to do so, you may return it to your
place of purchase and your money will be refunded.
If you transfer a Machine to another user, warranty service is available to that user for
the remainder of the warranty period. You should give your proof of purchase and this
Statement to that user.
Warranty Service
To obtain warranty service for the Machine, you should contact your reseller or call
IBM. In the United States, call IBM at 1-800-772-2227. In Canada, call IBM at
1-800-565-3344. You may be required to present proof of purchase.
Depending on the Machine, the service may be 1) a “Repair” service at your location
(called “On-site”) or at one of IBM's or a reseller's service locations (called “Carry-in”)
or 2) an “Exchange” service, either On-site or Carry-in.
Copyright IBM Corp. 1995
255
Warranties and Notices
When a type of service involves the exchange of a Machine or part, the item IBM or
your reseller replaces becomes its property and the replacement becomes yours. The
replacement may not be new, but will be in good working order and at least
functionally equivalent to the item replaced.
It is your responsibility to:
1. obtain authorization from the owner (for example, your lessor) to have IBM or your
reseller service a Machine that you do not own;
2. where applicable, before service is provided —
a) follow the problem determination, problem analysis, and service request
procedures that IBM or your reseller provide,
b) secure all programs, data, and funds contained in a Machine,
c) inform IBM or your reseller of changes in a Machine's location, and
d) for a Machine with exchange service, remove all features, parts, options,
alterations, and attachments not under warranty service. Also, the Machine
must be free of any legal obligations or restrictions that prevent its exchange;
and
3. be responsible for loss of, or damage to, a Machine in transit when you are
responsible for the transportation charges.
Extent of Warranty
IBM does not warrant uninterrupted or error-free operation of a Machine.
Misuse, accident, modification, unsuitable physical or operating environment, improper
maintenance by you, or failure caused by a product for which IBM is not responsible
may void the warranties.
THESE WARRANTIES REPLACE ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. HOWEVER, SOME LAWS DO NOT ALLOW
THE EXCLUSION OF IMPLIED WARRANTIES. IF THESE LAWS APPLY,
THEN ALL EXPRESS AND IMPLIED WARRANTIES ARE LIMITED IN
DURATION TO THE WARRANTY PERIOD. NO WARRANTIES APPLY
AFTER THAT PERIOD.
In Canada, warranties include both warranties and conditions.
Some jurisdictions do not allow limitations on how long an implied warranty lasts, so
the above limitation may not apply to you.
Limitation of Liability
Circumstances may arise where, because of a default on IBM's part (including
fundamental breach) or other liability (including negligence and misrepresentation),
you are entitled to recover damages from IBM. In each such instance, regardless of
the basis on which you are entitled to claim damages, IBM is liable only for:
1. bodily injury (including death), and damage to real property and tangible personal
property; and
2. the amount of any other actual loss or damage, up to the greater of $100,000 or
the charge for the Machine that is the subject of the claim.
Under no circumstances is IBM liable for any of the following:
1. third-party claims against you for losses or damages (other than those under the
first item listed above);
2. loss of, or damage to, your records or data; or
3. economic consequential damages (including lost profits or savings) or incidental
damages, even if IBM is informed of their possibility.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation or exclusion may not apply to you.
256
IBM ThinkPad 755CX User's Guide
Warranties and Notices
This warranty gives you specific legal rights and you may also have other rights which
vary from jurisdiction to jurisdiction.
Appendix E. Product Warranties and Notices
257
Warranties and Notices
International Business Machines Corporation
Armonk, New York, 10504
Statement of Limited Warranty
The warranties provided by IBM in this Statement of Limited Warranty apply only to
Machines you originally purchase for your use, and not for resale, from IBM or an IBM
authorized reseller. The term “Machine” means an IBM machine, its features,
conversions, upgrades, elements, or accessories, or any combination of them.
Machines are subject to these terms only if purchased in the United States or Puerto
Rico, or Canada, and located in the country of purchase. If you have any questions,
contact IBM or your reseller.
Machine: Battery Pack
Warranty Period*: One Year
*Elements and accessories are warranted for three months. Contact your place
of purchase for warranty service information.
Production Status
Each Machine is manufactured from new parts, or new and serviceable used parts
(which perform like new parts). In some cases, the Machine may not be new and may
have been previously installed. Regardless of the Machine's production status, IBM's
warranty terms apply.
The IBM Warranty
IBM warrants that each Machine 1) is free from defects in materials and workmanship
and 2) conforms to IBM's Official Published Specifications. IBM calculates the
expiration of the warranty period from the Machine's Date of Installation. The date on
your receipt is the Date of Installation, unless IBM or your reseller informs you
otherwise.
During the warranty period, IBM or your reseller will provide warranty service under
the type of service designated for the Machine and will manage and install engineering
changes that apply to the Machine. IBM or your reseller will specify the type of
service.
For a feature, conversion, or upgrade, IBM or your reseller may require that the
Machine on which it is installed be 1) the designated, serial-numbered Machine and 2)
at an engineering-change level compatible with the feature, conversion, or upgrade.
Some of these transactions (called “Net-Priced” transactions) may include additional
parts and associated replacement parts that are provided on an exchange basis. All
removed parts become the property of IBM and must be returned to IBM.
Replacement parts assume the remaining warranty of the parts they replace.
If a Machine does not function as warranted during the warranty period, IBM or your
reseller will repair or replace it (with a Machine that is at least functionally equivalent)
without charge. If IBM or your reseller is unable to do so, you may return it to your
place of purchase and your money will be refunded.
If you transfer a Machine to another user, warranty service is available to that user for
the remainder of the warranty period. You should give your proof of purchase and this
Statement to that user.
Warranty Service
To obtain warranty service for the Machine, you should contact your reseller or call
IBM. In the United States, call IBM at 1-800-772-2227. In Canada, call IBM at
1-800-565-3344. You may be required to present proof of purchase.
Depending on the Machine, the service may be 1) a “Repair” service at your location
(called “On-site”) or at one of IBM's or a reseller's service locations (called “Carry-in”)
or 2) an “Exchange” service, either On-site or Carry-in.
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IBM ThinkPad 755CX User's Guide
Warranties and Notices
When a type of service involves the exchange of a Machine or part, the item IBM or
your reseller replaces becomes its property and the replacement becomes yours. The
replacement may not be new, but will be in good working order and at least
functionally equivalent to the item replaced.
It is your responsibility to:
1. obtain authorization from the owner (for example, your lessor) to have IBM or your
reseller service a Machine that you do not own;
2. where applicable, before service is provided —
a) follow the problem determination, problem analysis, and service request
procedures that IBM or your reseller provide,
b) secure all programs, data, and funds contained in a Machine,
c) inform IBM or your reseller of changes in a Machine's location, and
d) for a Machine with exchange service, remove all features, parts, options,
alterations, and attachments not under warranty service. Also, the Machine
must be free of any legal obligations or restrictions that prevent its exchange;
and
3. be responsible for loss of, or damage to, a Machine in transit when you are
responsible for the transportation charges.
Extent of Warranty
IBM does not warrant uninterrupted or error-free operation of a Machine.
Misuse, accident, modification, unsuitable physical or operating environment, improper
maintenance by you, or failure caused by a product for which IBM is not responsible
may void the warranties.
THESE WARRANTIES REPLACE ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. HOWEVER, SOME LAWS DO NOT ALLOW
THE EXCLUSION OF IMPLIED WARRANTIES. IF THESE LAWS APPLY,
THEN ALL EXPRESS AND IMPLIED WARRANTIES ARE LIMITED IN
DURATION TO THE WARRANTY PERIOD. NO WARRANTIES APPLY
AFTER THAT PERIOD.
In Canada, warranties include both warranties and conditions.
Some jurisdictions do not allow limitations on how long an implied warranty lasts, so
the above limitation may not apply to you.
Limitation of Liability
Circumstances may arise where, because of a default on IBM's part (including
fundamental breach) or other liability (including negligence and misrepresentation),
you are entitled to recover damages from IBM. In each such instance, regardless of
the basis on which you are entitled to claim damages, IBM is liable only for:
1. bodily injury (including death), and damage to real property and tangible personal
property; and
2. the amount of any other actual loss or damage, up to the greater of $100,000 or
the charge for the Machine that is the subject of the claim.
Under no circumstances is IBM liable for any of the following:
1. third-party claims against you for losses or damages (other than those under the
first item listed above);
2. loss of, or damage to, your records or data; or
3. economic consequential damages (including lost profits or savings) or incidental
damages, even if IBM is informed of their possibility.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation or exclusion may not apply to you.
Appendix E. Product Warranties and Notices
259
Warranties and Notices
This warranty gives you specific legal rights and you may also have other rights which
vary from jurisdiction to jurisdiction.
260
IBM ThinkPad 755CX User's Guide
Warranties and Notices
Notices
References in this publication to IBM products, programs, or services
do not imply that IBM intends to make these available in all countries
in which IBM operates. Any reference to an IBM product, program,
or service is not intended to state or imply that only that IBM product,
program, or service may be used. Any functionally equivalent
product, program, or service that does not infringe any of the
intellectual property rights of IBM may be used instead of the IBM
product, program, or service. The evaluation and verification of
operation in conjunction with other products, except those expressly
designated by IBM, are the responsibility of the user.
IBM may have patents or pending patent applications covering
subject matter in this document. The furnishing of this document
does not give you any license to these patents. You can send
license inquiries, in writing, to the IBM Director of Licensing, IBM
Corporation, 500 Columbus Avenue, Thornwood, NY 10594, U.S.A.
Trademarks
The following terms, used in this publication, are trademarks of the
IBM Corporation in the United States or other countries or both:
AT
IBM
MMPM/2
Multimedia Presentation Manager/2
Mwave
Operating System/2
OS/2
PS/2
ThinkPad
TrackPoint III
WIN-OS/2
The following terms, denoted by a double asterisk (**) in this
publication, are trademarks of other companies as follows:
100LX
200LX
America Online
Bell
Centronics
CompuServe
Hayes
Hewlett-Packard
Intel
Kensington
MCI
MicroCom
MicroSaver
Microsoft
MNP
MS-DOS
Omnibook
PCMCIA
Hewlett-Packard Company
Hewlett-Packard Company
America Online, Inc.
AT&T Bell Laboratories
Centronics Data Computer Corp.
CompuServe, Inc.
Hayes Microcomputer Products, Inc.
Hewlett-Packard Company
Intel Corporation
Kensington Microware Ltd.
Microsoft Corporation
MicroCom Corporation
Kensington Microware Ltd.
Microsoft Corporation
MicroCom Corporation
Microsoft Corporation
Hewlett-Packard Company
Personal Computer Memory Card International Association
Appendix E. Product Warranties and Notices
261
Warranties and Notices
Pentium
Phoenix
PRODIGY
QSound
Sharp
Sound Blaster
UL
Western Digital
Windows
Wizard
262
IBM ThinkPad 755CX User's Guide
Intel Corporation
Phoenix Technologies, Ltd.
Prodigy Services, Inc.
QSound, Inc.
Sharp Corporation
Creative Labs, Inc.
Underwriters Laboratory
Western Digital Corporation
Microsoft Corporation
Sharp Corporation
Warranties and Notices
Electronic Emission Notice
Federal Communications Commission (FCC) Statement
Part 15 of the FCC Rules
Note: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
Consult an IBM authorized dealer or service representative for help.
Properly shielded and grounded cables and connectors must be used in order to meet
FCC emission limits. Proper cables and connectors are available from IBM authorized
dealers. IBM is not responsible for any radio or television interference caused by
using other than recommended cables and connectors or by unauthorized changes or
modifications to this equipment. Unauthorized changes or modifications could void the
user's authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
Telephone Company Requirements
(Part 68 of the FCC Rules)
1. The Telephone Consumer Protection Act of 1991 makes it unlawful for any person
to use a computer or other electronic device to send any message via a telephone
fax machine unless such message clearly contains in a margin at the top or
bottom of each transmitted page or on the first page of the transmission, the date
and time it is sent and an identification of the business or other entity, or other
individual sending the message and the telephone number of the sending machine
or such business, other entity, or individual.
In order to program this information into your computer, you should be sure to
follow the installation instructions for your fax software package.
2. The built-in modem is built into the ThinkPad computer. It complies with Part 68
of the FCC Rules. A label is affixed to the bottom of the computer that contains,
among other things, the FCC registration number, USOC, and Ringer Equivalency
Number (REN) for this equipment. If these numbers are requested, look at the
label and provide this information to your telephone company.
3. The REN is useful to determine the quantity of devices you may connect to your
telephone line and still have those devices ring when your number is called. In
most, but not all, areas, the sum of the RENs of all devices should not exceed five
Appendix E. Product Warranties and Notices
263
Warranties and Notices
(5.0). To be certain of the number of devices you may connect to your line, as
determined by the REN, you should call your local telephone company to
determine the maximum REN for your calling area.
4. If the built-in modem causes harm to the telephone network, the telephone
company may discontinue your service temporarily. If possible, they will notify you
in advance. But, if advance notice isn't practical, you will be notified as soon as
possible. You will be advised of your right to file a complaint with the FCC.
5. Your telephone company may make changes in its facilities, equipment,
operations, or procedures that could affect the proper operation of your equipment.
If they do, you will be given advance notice so as to give you an opportunity to
maintain uninterrupted service.
6. If you experience trouble with this built-in modem, contact your IBM Authorized
Seller, or the IBM Corporation, 500 Columbus Avenue, Thornwood, NY 10594,
1-800-772-2227, for repair/warranty information. The telephone company may ask
you to disconnect this equipment from the network until the problem has been
corrected, or until you are sure the equipment is not malfunctioning.
7. No customer repairs are possible to the modem. If you experience trouble with
this equipment, contact your Authorized Seller or the IBM Corporation for
information.
8. The modem may not be used on coin service provided by the telephone company.
Connection to party lines is subject to state tariffs. Contact your state public utility
commission or corporation commission for information.
9. When ordering network interface (NI) service from the Local Exchange Carrier,
specify service arrangement USOC RJ11C.
Canadian Department of Communications Compliance Statement
This equipment does not exceed Class B limits per radio noise emissions for digital
apparatus, set out in the Radio Interference Regulation of the Canadian Department of
Communications.
Avis de conformité aux normes du ministère des Communications du
Canada
Cet équipement ne dépasse pas les limites de Classe B d'émission de bruits
radioélectriques pour les appareils numériques, telles que prescrites par le Règlement
sur le brouillage radioélectrique établi par le ministère des Communications du
Canada.
European Community Directive Conformance Statement
This product is in conformity with the protection requirements of EC Council Directive
89/336/EEC on the approximation of the laws of the Member States relating to
electro-magnetic compatibility.
A declaration of Conformity with the requirements of the Directive has been signed by
IBM United Kingdom Limited, PO BOX 30 Spango Valley Greenock Scotland
PA160AH.
This product satisfies the Class B limits of EN 55022.
264
IBM ThinkPad 755CX User's Guide
Warranties and Notices
Installation and Operating Instructions Addendum for United
Kingdom Users
Users of the IBM ThinkPad 755CX modem function in the United Kingdom (U.K.) must
pay close attention to the statements contained in this Addendum.
Modem Connection
1. The modem is suitable for connection to the public switched telephone network
(PSTN) provided by British Telecommunications plc or Hull City Telephone
Department. (Direct exchange lines only, not shared service or 1-1 carrier
systems.)
2. It is suitable for use only on telephone lines provided with Loop-Disconnect or
Multi-Frequency Dialling facilities.
3. These modems are only approved for compatible PBX's. IBM should be
consulted for an up-to-date list of PBX's with which the modem is compatible.
4. They are suitable for connection to PBX's which return secondary proceed
indication.
5. If a modem is to be used with a PBX which returns secondary proceed indication,
no more than 2 pauses of four seconds duration each should be inserted
between the initial PSTN access digit and the number to be dialled. This is to
avoid interference to the BT network.
6. If a modem is to be used with a PBX which has extension wiring owned by BT,
connection of the modem to the PBX can only be carried out by BT; or, by the
authorized maintainer of the PBX unless the authorized maintainer has been
given 14 days written notice that the connection is to be made by another
person, and that period of notice has expired.
7. There is no guarantee of correct working in all circumstances. Any difficulties
should be referred to IBM.
8. Some network operators require that intended users of their network request
permission to connect and for the installation of an appropriate socket.
Ringer Equivalence Number
The ringer equivalence number (REN) of this modem is 1.
REN is a guide to the maximum number of apparatus that can be simultaneously
connected to one telephone line. The REN value of each apparatus is added
together, and should not exceed 4.
Appendix E. Product Warranties and Notices
265
Warranties and Notices
Approved Usage
The modem is approved only for use with the following facilities:
Storage of telephone numbers for retrieval by a predetermined code
Detection of initial proceed indication
Automatic calling
Tone detection
Modem
Operation in the absence of secondary proceed indication
Any other usage will invalidate the approval of your modem, if, as a result, it then
ceases to conform to the standards against which approval was granted.
The approval of the modem for connection to UK PSTN is INVALIDATED if the
apparatus is subject to modification in any material way not authorized by British
Approvals Board Telecommunications (BABT) or if it is used with, or connected to
Internal software that has not been formally accepted by BABT.
Installation
The IBM ThinkPad 755CX is manufactured to the International Safety Standard
IEC950 and as such is approved in the U.K. under the General Approval number
NS/G/1234/J/100003.
The IBM Data/Fax modem installed in the ThinkPad 755CX is approved separately
and has its own independent approval number.
This modem, supplied by IBM, does not contain excessive voltages. An excessive
voltage is one which exceeds 42.4 v peak ac or 60 v dc. It interfaces with the
ThinkPad computer using Safe Extra Low Voltages only. To maintain the
independent approval of the IBM adapters, it is essential that other optional cards,
not supplied by IBM, do not use main voltages or any other excessive voltages.
Seek advice from a competent engineer before installing other adapters not supplied
by IBM.
For your continuing safety, care must be take to ensure that the modem is only used
when mounted within the computer with all external covers fastened securely by
means of any screws supplied with your installation kit.
Users of this modem are advised that they are only approved for connection to the
PSTN via the interface supplied by IBM. Connection of a modem to the PSTN by
any other means will invalidate the approval.
General
These modems might not operate satisfactorily on a certain number of trunk routes.
Any persistent difficulties should be referred to IBM.
266
IBM ThinkPad 755CX User's Guide
Warranties and Notices
Storage of Numbers
1. It is advisable to check the telephone numbers stored in your modem
immediately after programming, and also after changing the battery in the CPU.
2. To prevent the misdirection of calls and network interference, ensure that all
manually programmed telephone numbers are correctly entered.
3. The number you enter to dial might optionally contain a PAUSE character to
allow this modem to operate with a PABX. This takes the form:
ACCESS DIGIT + PAUSE CHARACTER + NUMBER TO BE DIALLED
Where the access digit is the number you have to dial to get an outside line, the
pause character for this modem is a “,” (comma). The pause character inserts a
4-second delay.
4. This modem can only be used with the DAA P/N 59G1045.
Voice/Telephone Connection
To comply with the British Approvals Board Telecommunications (BABT)
requirements the IBM ThinkPad 755CX voice connection application programs must
be designed with the following considerations:
Auto-Calling
1. Network addresses
When using the auto-calling to initiate outgoing calls to the PSTN, the user
must ensure all manually entered network address are correctly programmed.
Any adjustments which might affect compliance with the U.K. requirements
are described in the User and Installation Guide. These adjustments can be
made only by authorized personnel.
2. Resolution
The decision-making process for resolution user call progress tones and is
internal to ThinkPad 755CX. The user selects the appropriate modes of
operation for using the feature.
3. Repeat attempts
The IBM ThinkPad 755CX can determine when to initiate a new call attempt
to a number over the PSTN after an ineffective attempt to the same number.
This is called repeat attempt feature.
The number of repeat call attempts and the minimum durations between
these repeat attempts must follow one of the call patterns specified in the
following table.
Appendix E. Product Warranties and Notices
267
Warranties and Notices
Repeat Attempts: Number of Attempts and Durations between Attempts
Call attempt
Initial attempt
1st repeat attempt
2nd repeat attempt
3rd repeat attempt
4th repeat attempt
5th repeat attempt
Minimum Duration between Call Attempts for Call Pattern
A
B
5 seconds
1 minute
1 minute
1 minute
End of sequence
(See note 1)
6th repeat attempt
7th repeat attempt
5
2
2
2
2
seconds
minutes
minutes
minutes
minutes
2 minutes
End of sequence
(See note 1)
nth repeat attempt
(See note 2)
Notes::
1. The maximum number of calls for repeat attempt pattern A is 5, and for call pattern B is 7.
2. No limit is specified for the value of n.
3. The durations given in this table are measured from cleardown to reseizure.
268
IBM ThinkPad 755CX User's Guide
C
5 seconds
10 minutes
10 minutes
10 minutes
10 minutes
10 minutes
10 minutes
10 minutes
Glossary
This glossary includes terms and
definitions from the IBM Dictionary of
Computing (New York: McGraw-Hill,
1994).
ac. Alternating current.
ac power. Power that is supplied to the
computer through an electrical outlet.
boot. To prepare a computer system for
operation by loading an operating
system.
ANSI. American National Standards
Institute.
bps. Bits per second. In serial
transmission, the instantaneous bit speed
with which a device or channel transmits
a character.
application program. A program that
performs specific tasks on your
computer, such as word processing or
creating spreadsheets.
bus. A facility for transferring data
between several devices located between
two end points, only one device being
able to transmit at a given moment.
Advanced Power Management (APM).
A facility consisting of one or more layers
of software that support power
management in computers with power
manageable hardware. The APM
software interface allows applications,
operating systems, device drivers, and
the APM BIOS to work together to
reduce power consumption, without
reducing system performance.
cache memory. A special memory,
smaller and faster than main memory,
that is used to hold a copy of instructions
and data in main memory that are likely
to be needed next by the processor, and
that have been obtained automatically
from main memory.
ASCII. American National Standard
Code for Information Interchange.
ATA PC Card. A PC Card with an AT
attachment hard disk drive interface such
as a storage device PC Card.
AUTOEXEC.BAT. A file that contains a
startup procedure of DOS. Each time
you start your system, DOS performs the
commands that are stored in this file.
backup copy. A copy, usually of a file
or group of files, that is kept in case the
original file or files are unintentionally
changed or destroyed.
batch. A process method in which a
program or programs records with little or
no operator action.
BIOS (Basic Input/Output System).
Microcode that contains such basic
hardware operations as interactions with
diskette drives, hard disk drives, and the
keyboard.
bitmap graphics. (1) A form of graphics
in which all points on the display are
directly addressable. (2) In multimedia
Copyright IBM Corp. 1995
applications, a form of graphics in an
area of computer memory or storage that
can be displayed as an image.
combination keys. Keys that have
specific functions when you hold them
down at the same time.
configuration. (1) The manner in which
the hardware and software of an
information processing system are
organized and interconnected. (2) The
physical and logical arrangement of
devices and programs that make up a
data processing system. (3) The devices
and programs that make up a system,
subsystem, or network.
CONFIG.SYS. A file that contains a
group of commands to load installable
device drivers and reserve space in
system memory for information
processing. This file is referred to by
DOS during system startup.
CRT. Cathode ray tube display.
device driver. A file that contains the
code needed to attach and use a device.
Operating system loads device drivers for
screens, keyboards, printers, diskette
drives, hard disk drives, and auxiliary
devices. The user can replace these or
add other devices by coding and loading
a device driver.
DIMM. Dual inline memory module.
269
Glossary
directory. A type of file containing the
names and controlling information for
other files or other directories.
immediately restores the same data and
applications as when hibernation started,
without restarting the operating system.
DMA. Direct memory access. The
transfer of data between memory and
input/output units without processor
intervention.
high-performance mode. A method of
increasing the access time of video
memories for dual-scan STN LCDs, to
produce high-quality video on an external
display (CRT).
double-click. To press and release a
mouse button twice within a time frame
defined by the user, without moving the
pointer off the choice.
DRAM. Dynamic random access
memory.
DSP. Digital signal processor.
DSTN. Dual-scan supertwisted nematic.
EGA. Enhanced graphics adapter.
EIA. Electronics Industries Association.
EIA-232D. An EIA interface standard
that defines the physical, electronic, and
functional characteristics of an interface
line that connects a communication
device and associated workstation. It
uses a 25-pin connector and an
unbalanced line voltage.
high-resolution mode. Video
resolutions that are greater than 640 by
480 pels.
icon. A graphic symbol, displayed on a
screen, that a user can point to with a
pointing device such as a TrackPoint III
or mouse to select a particular function or
software application.
IR. Infrared.
ISA. Industry standard architecture.
ISO. International Organization for
Standardization.
JEIDA. Japan Electronics Industry
Development Association.
kilobyte (KB). 1024 bytes.
LAN. Local area network.
EMS. Expanded memory specification.
fax. (1) Facsimile machine. (2) A
transmitted document from a facsimile
machine.
fixed disk. In personal computing, fixed
disk is synonymous with hard disk.
flash memory. Electrically rewritable
storage.
folder. A file used to store and organize
documents.
fuel gauge. An indicator on the screen
that constantly shows the current power
status of the battery pack.
hibernation. One of the power-saving
methods that stores data and
applications running in the computer's
memory on the hard disk. During
hibernation, the computer is automatically
turned off to save power. When power is
turned on again, the computer
270
IBM ThinkPad 755CX User's Guide
megabyte (MB). 1024 kilobytes. About
1 million bytes.
memory. Often referred to as
random-access memory (RAM),
measured in kilobytes (KB) or megabytes
(MB) of information.
MHz. Megahertz.
microcode. One or more
microinstructions used in a product as an
alternative to hard-wired circuitry to
implement functions of a processor or
other system component.
MIDI. Musical Instrument Digital
Interface.
modem. A device that connects your
computer to a telephone line, allowing it
to communicate with another computer at
another location.
parallel port. A port used to attach
such devices as dot-matrix printers and
input/output units; it transmits data 1 byte
at a time.
partial suspend mode. A kind of
suspend mode where only a part of the
system components uses power.
password. A series of letters or
numbers that you designate to restrict
access to your computer.
PC Card. A card that is based on the
PCMCIA standard.
PCMCIA. Personal Computer Memory
Card International Association.
pel. Picture element.
picture element. In computer graphics,
the smallest element of a display surface
that can be independently assigned color
and intensity.
reboot. Restart all operations of the
computer as if the power were just turned
on.
resume. To begin computer operations
again from suspend mode.
ROM. Read-only memory.
serial port. A port used to attach such
devices as display devices, letter-quality
printers, modems, plotters, and such
pointing devices as light pens and mice;
it transmits data 1 bit at a time.
suspend. Stops all operations of the
computer to reduce power drain and
restrict access to the files.
SVGA. Super video graphics adapter, a
video mode that produces up to
1024-by-768 resolution.
STN. Supertwisted nematic.
pixel. Picture element.
TFT. Thin film transistor.
pointing device. An instrument, such
as a mouse, TrackPoint III, or joystick,
that is used to move a pointer on the
screen.
POST. Power-on self-test.
pop-up menu. On the display screen, a
menu that emerges in an upward
direction from a particular point or line on
a display screen.
prompt. A visual or audible message
sent by a program to request the user's
response.
pull-down menu. On the display
screen, a menu that emerges in a
downward direction from a point or line at
or near the top of the screen.
TSRs. Terminate-and-stay-resident
programs, memory-resident programs
that are loaded into memory and stay
there so you can conveniently access
them whenever you need to.
vertical expansion. A video display
technique in character-display mode to fit
video images on the whole LCD screen
by adjusting the number of character dots
vertically.
VESA. Video Electronics Standards
Association.
VGA. Video graphics adapter, a video
mode that produces up to 640-by-480
resolution.
XMS. Extended memory specification.
Glossary
271
272
IBM ThinkPad 755CX User's Guide
Index
A
AC Adapter 18
cable, wrapping 19
connecting 8
voltage 18
answering machine 90
APM (Advanced Power
Management) 104
installing for Windows 177
AT bus 250
attaching
Dock I or II 172
expansion unit 172
external display 165
external keyboard 163
external numeric keypad 159
mouse 159
printer 164
audio features 75
additional information 243
problems 213
using 78
Auto Configurator 231
automatic, power mode 37
B
battery charging status indicator 16
battery pack 20
charging 92, 93
charging, indicator 16
discharging
canceling, for DOS 102
canceling, for OS/2 and
Windows 100
for DOS 102
for OS/2 and Windows 100
disposing ix
fuel-gauge program, using 98
installing 6
location 15
low-battery condition 97
maximizing battery power 104
monitoring battery power 96
battery power status indicator,
using 96
fuel-gauge program, using 98
operating time 20, 92
preserving battery-pack life 103
problems 211
replacing 95
Copyright IBM Corp. 1995
battery pack (continued)
storage switch 21
battery power status indicator
bidirectional, parallel 43
boot diskette 79
boot, selectable 47
brightness control
location and function 13
broken keylock 210
bus, system 249
16, 96
C
Caps Lock indicator 17
car battery adapter 22
carrying the computer 31
changing password
hard-disk password 116
power-on password 112
supervisor password 120
charging, battery pack 92
with AC Adapter 93
with travel quick charger 94
click buttons (TrackPoint III)
location 13
using 23
Config menu
Easy-Setup 43
CONFIG.SYS
example for PC Cards 236
updating for PC Cards 238
connector door
location 15
CPU
See microprocessor
customized, power mode 37
D
date and time
Easy-Setup 44
prompt 34
device driver
Auto Configurator, using 231
installing
display driver 188
infrared support software 196
Mwave support software 192
PCMCIA device driver 183
ThinkPad Features program 180
DIMM adapter 137
discriminator 88
diskette drive
273
diskette drive (continued)
bezel
installing 154
removing 150
in use, indicator 16
installing other options 150
location 15
problems 213
removing 138
diskette standards 254
diskette-eject button
location and function 15
display 27
device driver, installing 188
LCD
switching to 48
problem 27
switching, using Fn key 48
using 27
display driver
installing, for OS/2 189
installing, for Windows 191
DMA channel 227
Dock I or II
attaching 172
speaker volume control, using Fn
key 49
docking control utility 40
DOS Version 7.0 or later
installing 176
drive-startup sequence 47
DSP 75
E
Easy-Setup
Config menu 43
date and time menu 44
main menu 42
password menu 44
restart menu 46
start up menu 45
test menu 45
using 42
EMS, specifying software 235
error codes 208
expansion unit
attaching 172
speaker volume control, using Fn
key 49
external devices
Dock I or II 172
274
IBM ThinkPad 755CX User's Guide
external devices (continued)
external display 165
external keyboard 163
external numeric keypad 159
external unit 172
modem/fax port 155
mouse 159
printer 164
external display
attaching 165
color depth, changing 170
connector 5, 15
display driver, setting 167
problem 27
screen resolution, changing 170
using 27
external input device connector
location and function 13
external keyboard 5
attaching 163
external numeric keypad 5
attaching 159
F
fax 89
features 249
Fn key
function 48
location 13
fuel-gauge program 98
Fn key function, using 48
monitoring battery status 99, 101
G
game support
H
75
hard disk drive
indicator, in use 16
locking lever 130
replacing 148
securing, with chain 130
securing, with password 114
several hard disk drives,
using 123
hard-disk password
changing 116
prompt 34
removing 117
hard-disk password (continued)
setting 115
using 114
with power-on password 122
with supervisor password 122
wrong hard-disk password,
entering 114
hardware conflicts 227
hardware specifications 251
headphone jack 5, 15
heat output, machine specifications 251
HelpClub 224
Helpware 224
hibernation file, creating 59
hibernation mode
creating hibernation file 59
using 57
using Fn key function 49
high performance, power mode 37
humidity, machine specifications 251
I
I/O address 227
IC DRAM card 137
identification numbers, recording 222
indicator panel 13, 16
infrared communication 72
Infrared Features Diskette 3
infrared port 5
location and function 13, 15
problems 214
initialize
Easy-Setup 43
input voltage 251
installing
device drivers 180—197
DIMM 138
diskette drive bezel 154
hard disk drive 148
IC DRAM card 138
modem/fax port 155
operating systems 176
option cover 153
PC Card 134
intermittent problems 220
internal devices
in diskette drive compartment 150
securing 130
interrupt level (IRQ) 227
IR (infrared) communication 72
IRQ 227
K
Kensington lock
keyhole 5, 13
using 131
keyboard
Easy-Setup 43
location 13
machine specifications 249
securing, from opening 130
template 3
keyboard/mouse connector 163
L
LCD
location and function 13
problems 27, 204
legs
location and function 15
lithium ion battery pack 20
locations and functions 12—15
lock
hard disk drive lock 130
Kensington lock 131
PC Card lock 132
locking lever
location and function 15
using 130
low-battery condition 97
M
maximizing battery power
decreasing LCD brightness 105
using advanced power
management 104
using power-saving options 107
memory
address 227
Easy-Setup 43
increasing capacity 137
machine specifications 249
slot 5
location and function 15
memory module (DIMM) 137
messages on screen 206
microphone (built-in)
location and function 13
microphone/line-in jack 5
location and function 15
microprocessor
Index
275
microprocessor (continued)
machine specifications 249
speed 37
MIDI
overview 244
support 75
modem 84
PC Card
installing 134
removing 136
problems 213
modem/fax port 5
installing 155
location and function 15
release latch
location and function 15
mouse 5
attaching 159
using with
Space Saver Keyboard 161
TrackPoint III 159
Mwave DSP Features Diskettes 3
Mwave DSP function
additional information 243
answering machine 90
audio 78
discriminator 88
fax modem 89
MIDI mapper 244
MIDI synthesizer 244
modem 84
problems 213
telephony 84
using 75
Mwave support software
installing, for DOS 194
installing, for OS/2 192
installing, for Windows 195
N
nickel metal hydride battery pack
numeric keypad 26
numeric lock indicator 17
O
online book 29
operating systems, installing
DOS 176
OS/2 176
Windows 177
option cover
276
IBM ThinkPad 755CX User's Guide
21
option cover (continued)
installing 153
location and function 15
removing 150
options
DIMM 137
installing 138
removing 143
diskette drive
problems 213
removing 138
Dock I or II
attaching 172
expansion unit
attaching 172
external display
attaching 165
problems 218
external keyboard, attaching 163
external numeric keypad
attaching 159
problems 216
hard disk drive, replacing 148
IC DRAM card 137
in diskette drive compartment 150
keyboard
problems 216
modem/fax port
installing 155
mouse
attaching 159
PC Card
inserting 134
removing 136
using 61
pointing device
problems 216
printer
attaching 164
problems 220
problems 215
OS/2
installing 176
P
parallel
Easy-Setup 43
parallel connector 5
location and function 15
part numbers, power cords 252
password 44
password (continued)
Easy-Setup 44
hard-disk password
changing 116
power-on password, using
with 122
removing 117
setting 115
using 114
wrong, entering 114
personalization utility, using with 125
power-on password
changing 112
hard-disk password, using
with 122
removing 113
setting 111
using 110
wrong, entering 110
supervisor password
changing 120
hard-disk password, using
with 122
removing 121
setting 119
several hard disk drives,
using 123
using 118
wrong, entering 118
PC Card
advanced use of 231
device driver, installing 183
Director 62
eject button 13
example of CONFIG.SYS file 236
indicator, active 16
installing 134
releasing its memory area 240
removing 136
securing 132
slot 13
software considerations
DOS 235
necessary software 183
OS/2 234
under suspend and hibernation
mode 61
Windows 242
software EMS, specifying 235
suspend mode, using with 55
updating CONFIG.SYS file 238
using 61
PC Card Director
PC Card Director (continued)
installing, for DOS 186
installing, for OS/2 185
installing, for Windows 187
using 62
PCMCIA card
See PC Card
PCMCIA device driver
installing, for DOS 186
installing, for OS/2 185
installing, for Windows 187
PCMCIA Features Diskette 3
PCMCIA slot 5
location and function 13
personalization utility 125
pointing device 159
power cord 3
power cords 252
power jack
location 15
power management function
using 50
power mode
automatic 50
customized 50
high performance 50
switching, using Fn key 49
power shutdown switch
location and function 15
power switch
location and function 15
power-on indicator 17
power-on password
changing 112
hard-disk password, using with
prompt 34
removing 113
setting 111
using 110
wrong power-on password,
entering 110
preserving battery-pack life 103
printer
attaching 164
problems
battery pack 211
common 200
diskette drive 213
error codes 208
external display 28, 218
external numeric keypad 216
general 210
infrared communication 214
122
Index
277
problems (continued)
intermittent 220
keyboard 216
LCD 28, 204
messages on screen 206
modem 213
Mwave DSP function 213
options 215
pointing device 216
printer 220
software 215
test cannot find problem 211
testing the computer 202
TrackPoint III 216
troubleshooting charts 204
processor
See microprocessor
product map 2
ps2
mode3x command 205
program 41
ps2 mode3x command 219
Q
quick charger
removing (continued)
supervisor password 121
repair services
getting service 223
HelpClub 224
identification numbers 222
resource map utility 229
restart menu
Easy-Setup 46
resume function 50
RPL (remote program load) 47
S
92
R
rear door
location 15
record of identification numbers
release latches
location and function 13
removable
diskette drive
location 15
hard disk drive
location 15
removing
battery pack 95
bezel 150
DIMM 143
diskette drive 138
hard disk drive 148
hard-disk password 117
IC DRAM card 143
modem/fax port 155
option cover 150
PC Card 136
PC Card lock 132
power-on password 113
278
IBM ThinkPad 755CX User's Guide
222
safe suspend 54
screen messages
date and time prompt 34
F1 and diskette prompts 34
hard-disk password prompt 34
power-on password prompt 34
power-on self test (POST) error 34
scroll lock indicator 17
security
hard disk drive, with chain 130
internal devices 130
Kensington lock 131
keyboard, from opening 130
keyhole 5
password, security with
hard-disk password 114
power-on password 110
supervisor password 118
PC Card 132
personalization utility 125
serial
connector 5
location and function 15
Easy-Setup 43
number 222
service
HelpClub 224
how to get 223
installed options 221
setting password
hard-disk password 115
power-on password 111
supervisor password 119
size, machine specifications 251
software
CONFIG.SYS, example for PC
Cards 236
CONFIG.SYS, updating for PC
Cards 238
software (continued)
EMS, specifying 235
problems 215
Sound Blaster support 75
speaker (built-in)
location and function
speaker indicator 16
specifications
battery pack 251
heat output 251
humidity, environment 251
input voltage 251
size 251
temperature, environment 251
weight 251
standards, diskette 254
standby mode
Fn key function, using 48
using 52
start up menu
Easy-Setup 45
start up, changing 47
starting the computer 34
sticky Fn key 48
storage switch 21
storage, machine specifications 249
supervisor password
changing 120
hard-disk password, using with 122
removing 121
setting 119
several hard disk drives, using 123
using 118
wrong, entering 118
suspend mode
Fn key function, using 48
PC Card, using with 55
software considerations 55
using 53
suspend mode indicator 17
SVGA
display driver, installing 188
setting 165
system bus, machine specifications 249
system expansion connector 5
location and function 15
system-status indicators 16
battery charging status 16
battery power status 16
caps lock 17
diskette drive in use 16
hard disk in use 16
numeric lock 17
system-status indicators (continued)
PC Card active 16
power on 17
scroll lock 17
speaker 16
suspend mode 17
systemboard
Easy-Setup 43
T
telephony features 75
using 84
temperature, machine
specifications 251
test menu
Easy-Setup 45
testing the computer 202
ThinkPad Features program
alarm menu 38
display menu 38
docking control utility 40
fuel-gauge program 40
installing
DOS 181
OS/2 180
Windows 182
main menu 35
personalization utility 40
power menu 37
setup menu 39
suspend, hibernation, and resume
option 37
using
for DOS 41
for OS/2 and Windows 36
ThinkPad setup menu 39
TrackPoint III
cleaning 25
location 13
using 23
travel quick charger 92
troubleshooting charts 204—220
typematic 43
U
unidirectional, parallel
Utility Diskette 3
43
Index
279
V
video device driver
See display driver
Video Features Diskette 3
virtual screen 38
volume control
location and function 13
W
warranties and notices, product 255
weight, machine specifications 251
Windows Version 3.11 or later
installing 177
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IBM ThinkPad 755CX User's Guide