Dell Latitude Xpi CD laptop Service manual
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Dell
®
Latitude
®
XPi CD
SERVICE MANUAL
®
Information in this manual is subject to change without notice.
1994–1996 Dell Computer Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.
Trademarks used in this text: Dell, the DELL logo, and Latitude are registered trademarks of Dell Computer Corporation; Microsoft, Windows, and MS-DOS are registered trademarks of Microsoft Corporation; Intel and Pentium are registered trademarks of Intel Corporation; IBM is a registered trademark of International
Business Machines Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer
Corporation disclaims any proprietary interest in trademarks and trade names other than its own.
October 1996 P/N 30269
Contents
Chapter 1
System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Power/Suspend Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Diskette-Drive Access Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Hard-Disk/CD-ROM Drive Access Indicator. . . . . . . . . . . . . . . . . . . 1-4
PC Card Access Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Low-Battery Indicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Charging Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Keyboard Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Chapter 2
Initial Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
v
vi
Chapter 3
Beep Codes and Error Messages . . . . . . . . . . . . . . . . . . 3-1
Chapter 4
Removing and Replacing Parts . . . . . . . . . . . . . . . . . . . 4-1
Field-Replaceable Parts and Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Hard-Disk Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Memory Compartment Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Display Assembly Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Display Assembly Latch and Latch Spring . . . . . . . . . . . . . . . . . . . . . . 4-21
Display-Assembly Interface Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Microphone/Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
Diskette/CD-ROM Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
System Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
Removing the System Board Assembly . . . . . . . . . . . . . . . . . . . . . . 4-39
Replacing the System Board Assembly . . . . . . . . . . . . . . . . . . . . . . 4-40
3.1-V Power Supply Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41
Advanced Port Replicator Connector Dust Cover . . . . . . . . . . . . . . . . . 4-43
Appendix A
Factory Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Factory Repair Parts and Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
Exploded Views of Components and Assemblies . . . . . . . . . . . . . . . . . . . .A-12
Palmrest Assembly Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16
Trackball Button Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16
Display Assembly Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-17
Display-Assembly EMI Shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-17
Display Assembly Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-18
Display Assembly Hinges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-19
System-Board Assembly Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-20
Keyboard/Keypad/Mouse Connector Shield . . . . . . . . . . . . . . . . . . . . .A-21
Bottom-Case Assembly Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-25
Power Button and Power-Button Mounting Bracket . . . . . . . . . . . . . . .A-26
Spreader and Keel Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-27
Appendix B
System Setup Options . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Accessing the System Setup Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3
vii
viii
Index
Figures
Figure 1-1.
Front View of the Notebook Computer. . . . . . . . . . . . . . . . . . 1-2
Figure 1-2.
Back View of the Notebook Computer . . . . . . . . . . . . . . . . . . 1-3
Figure 1-3.
Indicator Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Figure 4-1.
Computer Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Figure 4-2.
Main Battery Assembly Removal . . . . . . . . . . . . . . . . . . . . . . 4-3
Figure 4-3.
Screw Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Figure 4-4.
Disconnecting an Interface Cable . . . . . . . . . . . . . . . . . . . . . . 4-5
Figure 4-5.
Exploded View—Computer . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Figure 4-6.
Hard-Disk Drive Assembly Removal . . . . . . . . . . . . . . . . . . . 4-7
Figure 4-7.
Memory Compartment Cover Removal . . . . . . . . . . . . . . . . . 4-8
Figure 4-8.
Memory Module Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Figure 4-9.
Palmrest Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Figure 4-10. Palmrest-Assembly Retaining Screws. . . . . . . . . . . . . . . . . . 4-11
Figure 4-11. Trackball Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Figure 4-12. Keyboard Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Figure 4-13. Tilt-Support Foot Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Figure 4-14. Display Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Figure 4-15. Display Assembly Bezel Removal . . . . . . . . . . . . . . . . . . . . 4-20
Figure 4-16. Display Assembly Latch and Latch Spring Removal . . . . . . 4-21
Figure 4-17. LCD Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Figure 4-18. LCD Inverter Board Removal . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Figure 4-19. Hinge Covers Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Figure 4-20. Display-Assembly Interface Cable Removal . . . . . . . . . . . . 4-26
Figure 4-21. Microphone/Switch Assembly Removal . . . . . . . . . . . . . . . . 4-28
Figure 4-22. Bottom Case Assembly Removal . . . . . . . . . . . . . . . . . . . . . 4-30
Figure 4-23. Diskette/CD-ROM Drive Assembly Removal . . . . . . . . . . . 4-31
Figure 4-24. Deck Buoy Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
Figure 4-25. Superpart Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . 4-34
Figure 4-26. Reserve Battery Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Figure 4-27. System Board Assembly Removal . . . . . . . . . . . . . . . . . . . . 4-38
Figure 4-28. I/O Bracket Clips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
Figure 4-29. 3.1-V Power Supply Board Removal . . . . . . . . . . . . . . . . . . 4-41
Figure 4-30. I/O-Panel Dust Cover Removal. . . . . . . . . . . . . . . . . . . . . . . 4-42
Figure 4-31. Advanced Port Replicator Connector Dust Cover. . . . . . . . . 4-43
Figure 4-32. Audio Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44
Figure A-1.
Exploded View—Display Assembly . . . . . . . . . . . . . . . . . . .A-12
Figure A-2.
Exploded View—Palmrest Assembly . . . . . . . . . . . . . . . . . .A-13
Figure A-3.
Exploded View—Bottom Case Assembly . . . . . . . . . . . . . . .A-14
Figure A-4.
Display-Assembly EMI Shield Removal . . . . . . . . . . . . . . . .A-17
Figure A-5.
System Board Assembly in the Bottom Case Assembly . . . .A-20
Figure A-6.
Keyboard/Keypad/Mouse Connector Shield Removal . . . . .A-21
Figure A-7.
I/O Interface Cable Removal . . . . . . . . . . . . . . . . . . . . . . . . .A-22
Figure A-8.
I/O Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-23
Figure A-9.
I/O Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-24
Figure A-10. Bottom-Case Assembly Components . . . . . . . . . . . . . . . . . .A-25
Figure A-11. Power Button and Power-Button Mounting Bracket
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-26
Figure A-12. Spreader and Keel Plate Removal . . . . . . . . . . . . . . . . . . . . .A-27
Figure B-1.
Dell Control Center Icon . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1
Figure B-2.
Dell Control Center Window . . . . . . . . . . . . . . . . . . . . . . . . . .B-1
Figure B-3.
System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3
Tables
Table 1-1.
Interrupt Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Table 1-2.
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Table 3-1.
POST Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Table 3-2.
System Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Table A-1.
Factory Repair Parts and Assemblies. . . . . . . . . . . . . . . . . . . .A-2
Table B-1. System Setup Program Categories. . . . . . . . . . . . . . . . . . . . . .B-4 ix
x
R
ead This First
A prerequisite for using this manual to service Dell portable computers is a basic knowledge of IBM
®
-compatible PCs and prior training in IBMcompatible PC troubleshooting techniques. In addition to information provided in this manual, Dell provides the Reference and Troubleshooting
Guide for troubleshooting procedures and instructions on using the Dell diagnostics to test portable computers, and the online System User’s Guide for information about system setup and operations.
W
arnings, Cautions, and Notes
Throughout this manual, there may be blocks of text printed in bold type or in italic type. These blocks are warnings, cautions, and notes, and they are used as follows:
WARNING: A WARNING indicates the potential for bodily harm and provides instructions for how to avoid the problem.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and provides instructions for how to avoid the problem.
NOTE: A NOTE provides helpful information about using the computer system.
Chapter 1
System Overview
T he Dell
®
Latitude
®
XPi CD is a lightweight, expandable portable computer that use the Intel
®
Pentium
®
microprocessor. This chapter provides an overview of the features and technical specifications of this computer.
S
ystem Features
In addition to the standard features found in a Dell portable computer, the Dell
Latitude XPi CD models include the following new features:
• 64-bit-wide data bus.
• 60-MHz local bus and a 30-MHz PCI bus.
• 256-KB pipelined-burst SRAM secondary cache.
• 16 MB of nonremovable, EDO-type memory built in to the system board.
Memory can be increased up to 48 MB by installing combinations of 8- and
16-MB fast-page memory modules in the two memory sockets on the system board.
• 128-bit accelerated graphics adapter with 1.1 MB of integrated video memory. The integrated video adapter is attached to the PCI bus.
• Full multimedia capability through the following standard features:
— A built-in CD-ROM drive
— MPEG software
— Hardware wavetable support
— SoundBlasterPro-compatible voice and music functions
— Jacks for connecting external speakers, headphones, or a microphone
• Two infrared ports that compatible with the Infrared Data Association
(IrDA) Standard 1.1 (Fast IR) for use with external devices.
• Keyboard with sound and Microsoft
®
Windows
®
operating system support.
• Support for two 3.3-V or 5-V PC Cards that adhere to the standards of the
Personal Computer Memory Card International Association (PCMCIA).
The computer supports type I, type II, or type III cards (in any combination).
For a complete list of system features, see “Technical Specifications” found later in this chapter.
System Overview 1-1
P
hysical Description
display assembly
LCD panel keyboard
trackball assembly display assembly latch indicator panel microphone tilt-support foot (2) infrared port main battery assembly speaker bottom case assembly diskette drive
CD-ROM drive
Figure 1-1. Front View of the Notebook Computer
1-2 Dell Latitude XPi CD Service Manual
indicator panel hard-disk drive
I/O panel infrared port
Advanced Port
Replicator connector
DC power input connector security cable slot audio jacks (3) speaker
PC Card slot power switch tilt-support foot
Figure 1-2. Back View of the Notebook Computer
Indicator Panel
LCD panel
Legend power/suspend indicator diskette-drive access indicator hard-disk/CD-ROM drive access indicator
PC Card access indicator low-battery indicator charging indicator
Figure 1-3. Indicator Panel
Num Lock indicator
Caps Lock indicator
Scroll Lock indicator
System Overview 1-3
The portable computer has nine indicators: six on the display assembly’s indicator panel and three on the keyboard assembly. Each of the six indicators on the display assembly has an identical pair of LEDs: one is visible on the indicator panel when the display is open, and the other is visible through an aperture on the outside of the display assembly when the display is fully closed. The subsections that follow describe the functions of the indicators.
Power/Suspend Indicator
The power/suspend indicator is a green LED. After the computer is turned on, the power/suspend indicator lights up constantly to indicate that the computer is receiving stable power. When the computer enters suspend mode, the indicator blinks once approximately every 8 seconds.
Diskette-Drive Access Indicator
The diskette-drive access indicator is a green LED. The indicator lights when data is being transferred to or from the diskette drive.
Hard-Disk/CD-ROM Drive Access Indicator
The hard-disk/CD-ROM drive access indicator is a green LED. The indicator lights when data is being transferred to or from the hard-disk drive or the
CD-ROM.
PC Card Access Indicator
The PC Card access indicator is a green LED. The indicator lights when data is being transferred to or from an installed PC Card (also known as a PCMCIA
card).
Low-Battery Indicator
The low-battery indicator is an amber LED. This indicator is used in conjunction with the speaker to indicate either of the following low-battery conditions:
• The first low-battery warning occurs when the main battery’s charge has been depleted to 8 percent of its fully charged condition. The low-battery indicator turns on and the speaker emits five beeps.
• The second and final low-battery warning occurs when the main battery’s charge has been depleted to 3 percent of its fully charged condition. The speaker beeps twice every 1 to 2 seconds for 15 seconds; then the system does a suspend-to-disk operation automatically before shutting down.
Charging Indicator
The charging indicator is an amber LED. The indicator turns on when the main battery begins charging and blinks to show the battery is fully charged.
1-4 Dell Latitude XPi CD Service Manual
Keyboard Indicators
The keyboard controls the operation of the numeric lock (Num Lock) indicator, the capitals lock (Caps Lock) indicator, and the Scroll Lock indicator, all of which are visible through apertures at the top of the keyboard. These indicators are associated with the <NUM LOCK> key, the <CAPS LOCK> key, and the
<SCROLL LOCK> key; when lit, the LEDs indicate the active state of these keys.
C
ontrolling Computer Power
The power button does not directly control power to the computer. Instead, when you slide the power button toward the front of the computer and then release it, the button momentarily closes the power switch on the system board.
The power switch sends a signal to the power management controller, signaling the controller to initiate a change of state of the computer’s power. The resulting power state depends on the present power state. The following subsection gives a description of the power states.
Power States
Sliding the power button toward the front of the computer initiates a change from the current power state to a different state. The protocols for the power state changes are as follows:
• If the computer is off (no indicators on) and the display is open and/or an external monitor is attached to the computer, sliding the power button initiates a boot operation.
• If the computer is off, if the display is closed, and if no external monitor is attached, sliding the power button causes the computer to run the POST and then turn off.
• If the computer is on and the SYSTEM SWITCH option in System Setup is set to ON/OFF , sliding the power button turns off the computer.
• If the computer is on and the SYSTEM SWITCH option in System Setup is set to S2D/RFD , sliding the power button causes the computer to enter suspendto-disk mode.
• If the computer is in suspend mode (the power/suspend indicator flashes every 8 seconds), if the SYSTEM SWITCH option in System Setup is set to
ON/OFF , and if the display is open or an external monitor is attached, sliding the power button turns off the computer.
• If the computer is in suspend mode (the power/suspend indicator flashes every 8 seconds), if the SYSTEM SWITCH option in System Setup is set to
S2D/RFD , and if the display is open or an external monitor is attached, sliding the power button causes the computer to enter suspend-to-disk mode.
System Overview 1-5
• If the computer is in suspend mode (the power/suspend indicator flashes every 8 seconds), if the display is closed, and if no external monitor is attached, sliding the power button has no effect on the power state. The computer remains in suspend mode.
• If the computer is in suspend-to-disk mode, sliding the power button causes the computer to initiate the resume-from-disk operation.
I
nterrupt Assignments
Table 1-1. Interrupt Assignments
IRQ Line Used/Available
IRQ0 Generated by the system timer
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ8
IRQ9
IRQ10
IRQ11
IRQ12
IRQ13
IRQ14
IRQ15
Generated by the keyboard controller to signal that the keyboard output buffer is full
Generated internally by the interrupt controller to enable IRQ8 through IRQ15
Available for use by a PC Card unless the built-in serial port or infrared port is configured for COM2 (the default)
Available for use by a PC Card unless the built-in serial port is configured for COM1 (the default)
Available for use by the audio controller
Generated by the diskette drive controller to indicate that the diskette drive requires the attention of the microprocessor
Available for use by a PC Card or audio controller if the built-in parallel port is disabled
Generated by the system I/O controller’s RTC
Available for use by the PC Card interrupt controller or the audio controller
Available for use by a PC Card or audio controller unless the
Advanced Port Replicator is attached
Available for use by a PC Card unless the Advanced Port Replicator is attached
Generated by the keyboard controller to indicate that the output buffer of the integrated trackball or external PS/2 mouse is full
Reserved for use by the internal coprocessor
Generated by the hard-disk drive to indicate that the drive requires the attention of the microprocessor
Reserved for the CD-ROM drive
1-6 Dell Latitude XPi CD Service Manual
T
echnical Specifications
Table 1-2. Technical Specifications
Microprocessor
Microprocessor type . . . . . . . . . . .
Intel Pentium microprocessor
Microprocessor speed . . . . . . . . . .
150 MHz
Bus architecture . . . . . . . . . . . . . .
PCI
Internal cache memory . . . . . . . . .
16 KB
External cache memory. . . . . . . . .
256 KB pipelined-burst SRAM
Math coprocessor . . . . . . . . . . . . .
internal to the microprocessor
Chip Set and Bus
System chip set . . . . . . . . . . . . . . .
Pico Power Vesuvius-LS Core Logic
Microprocessor data bus width . . . 64 bits
DRAM bus width . . . . . . . . . . . . .
64 bits
Address bus width. . . . . . . . . . . . .
32 bits
Security EEPROM . . . . . . . . . . . .
256 bytes
Flash EPROM . . . . . . . . . . . . . . . .
256 KB
Local bus. . . . . . . . . . . . . . . . . . . .
60 MHz
PCI bus . . . . . . . . . . . . . . . . . . . . .
30 MHz
PC Card
PC Card controller . . . . . . . . . . . .
Texas Instruments PCI1130 CardBus controller
PC Card connectors . . . . . . . . . . .
two (supports type I and type II cards in any combination; type III cards can be used only with type I or type II cards)
Cards supported . . . . . . . . . . . . . .
3.3-V and 5-V
PC Card connector size. . . . . . . . .
68 pins
Data width (maximum) . . . . . . . . .
32 bits
Memory
Architecture . . . . . . . . . . . . . . . . .
EDO memory 1
1
Memory module sockets . . . . . . . .
two
The system supports fast-page-mode memory modules for memory upgrades.
System Overview 1-7
Table 1-2. Technical Specifications (Continued)
Memory (Continued)
Memory module type and capacities . . . . . . . . . . . . . . . . . . .
8- and 16-MB fast-page mode
Standard RAM . . . . . . . . . . . . . . .
16 MB (EDO) on system board
Maximum RAM . . . . . . . . . . . . . .
48 MB
Memory access time: tRAC . . . . . . . . . . . . . . . . . . .
70 ns tCAC . . . . . . . . . . . . . . . . . . .
20 ns
BIOS address . . . . . . . . . . . . . . . .
F000:0000
Connectors
Serial (DTE) . . . . . . . . . . . . . . . . .
one 9-pin connector; 16550-compatible,
16-byte buffer
Parallel . . . . . . . . . . . . . . . . . . . . .
one 25-hole connector; unidirectional, bidirectional, EPP 1.9, or ECP
Monitor . . . . . . . . . . . . . . . . . . . . .
one 15-hole connector
PS/2 . . . . . . . . . . . . . . . . . . . . . . .
one 6-pin mini-DIN (this connector does not support more than one device at a time)
Infrared . . . . . . . . . . . . . . . . . . . . .
two ports compatible with IrDA
Standard 1.1 (Fast IR)
Audio . . . . . . . . . . . . . . . . . . . . . .
microphone-in line-in/audio-in headphones/speakers
Advanced Port Replicator . . . . . .
200-pin connector
Audio
Audio type . . . . . . . . . . . . . . . . . .
SoundBlasterPro-compatible 3.01 voice and music functions
Audio controller . . . . . . . . . . . . . .
ES1888
ES690 wavetable music synthesizer,
ES938 3D audio spatializer
Stereo conversion . . . . . . . . . . . . .
16 bit (analog-to-digital and digitalto-analog)
FM music synthesizer. . . . . . . . . .
20-voice, 72-operator
1-8 Dell Latitude XPi CD Service Manual
Table 1-2. Technical Specifications (Continued)
Audio (Continued)
Interfaces:
Internal . . . . . . . . . . . . . . . . . .
ISA bus
External . . . . . . . . . . . . . . . . . .
stereo line-in minijack microphone-in minijack headphones/speakers-out minijack
Speakers . . . . . . . . . . . . . . . . . . . .
four 8-ohm speakers
Internal speaker amplifier . . . . . . .
1 W into 8 ohms stereo
Headphones amplifier . . . . . . . . . .
150 mW into 32 ohms stereo
Controls. . . . . . . . . . . . . . . . . . . . .
volume can be controlled through key combinations, software application menus, or the Speaker window in the Dell
Control Center
Video
Video type . . . . . . . . . . . . . . . . . . .
hardware-accelerated, 128-bit PCI
Video controller . . . . . . . . . . . . . .
NeoMagic 2090
Integrated video memory . . . . . . .
1.1 MB
Display
Type. . . . . . . . . . . . . . . . . . . . . . . .
active-matrix color (TFT)
Dimensions:
Height . . . . . . . . . . . . . . . . . . .
195.0 mm (7.68 inches)
Width. . . . . . . . . . . . . . . . . . . .
272.0 mm (10.7 inches)
Diagonal . . . . . . . . . . . . . . . . .
307.5 mm (12.1 inches)
Maximum resolution. . . . . . . . . . .
800 x 600 pixels; 65,536 colors
Response time (typical) . . . . . . . .
80 ms
Operating angle. . . . . . . . . . . . . . .
0
°
(closed) to 180
°
Dot pitch . . . . . . . . . . . . . . . . . . . .
0.31 mm
Power consumption:
Panel (typical) . . . . . . . . . . . . .
0.69 W
Backlight . . . . . . . . . . . . . . . . .
2.10 W
Controls. . . . . . . . . . . . . . . . . . . . .
brightness can be controlled through a key combination, the Display window in the
Dell Control Center, or the System Setup program
System Overview 1-9
Table 1-2. Technical Specifications (Continued)
Keyboard
Number of keys . . . . . . . . . . . . . .
85 (U.S., Canada, Korea, Thailand, and locations that use traditional Chinese);
86 (Europe);
87 (Japan)
Key travel . . . . . . . . . . . . . . . . . . .
3.0
±
0.5 mm (0.12
±
0.02 inch)
Key spacing . . . . . . . . . . . . . . . . .
18.25 mm (0.72 inch)
Layout. . . . . . . . . . . . . . . . . . . . . .
QWERTY, AZERTY, Kanji
Battery
Type . . . . . . . . . . . . . . . . . . . . . . .
lithium ion
Dimensions:
Height . . . . . . . . . . . . . . . . . . .
20.5 mm (0.81 inch)
Depth . . . . . . . . . . . . . . . . . . .
152.75 mm (6.01 inches)
Width . . . . . . . . . . . . . . . . . . .
78.5 mm (3.09 inches)
Weight. . . . . . . . . . . . . . . . . . . . . .
0.41 kg (0.9 lb)
Voltage . . . . . . . . . . . . . . . . . . . . .
14.4 VDC
Capacity . . . . . . . . . . . . . . . . . . . .
36 WH
Charge time (approximate): 2
Computer on . . . . . . . . . . . . . .
2.5 hours
Computer off . . . . . . . . . . . . .
1.5 hours
Operating time (approximate, with no power management features enabled) 2 . . . . . . . . . . . . . . . . . . . .
2 to 3.5 hours (without a CD-ROM drive in use )
Life span (approximate) 2 . . . . . . .
400 discharge/charge cycles
2
Temperature range:
Charge . . . . . . . . . . . . . . . . . .
10
° to 40
°
C (50
°
to 104
°
F)
Discharge . . . . . . . . . . . . . . . .
10
°
to 40
°
C (50
°
to 104
°
F)
Storage . . . . . . . . . . . . . . . . . .
–40
° to 65
°
C (–40
°
to 149
°
F)
Battery performance features such as charge time, operating time, and life span can vary according to the conditions under which the computer and battery are used.
1-10 Dell Latitude XPi CD Service Manual
Table 1-2. Technical Specifications (Continued)
Battery (Continued)
NiCad reserve battery:
Voltage . . . . . . . . . . . . . . . . . .
7.2 V
Operating time
(approximate) . . . . . . . . . . . . .
2 minutes (if computer is in battery swap mode); 40 days (if power is turned off)
AC Adapter
Input voltage . . . . . . . . . . . . . . . . .
90 to 135 VAC and 164 to 264 VAC
Input current (maximum) . . . . . . .
1.2 A and 0.6 A
Input frequency . . . . . . . . . . . . . . .
47 to 63 Hz
Output current . . . . . . . . . . . . . . . .
4.5 A (maximum);
3.5 A (continuous)
Rated output voltage . . . . . . . . . . .
18.5 VDC
Height . . . . . . . . . . . . . . . . . . . . . .
27.94 mm (1.1 inches)
Width. . . . . . . . . . . . . . . . . . . . . . .
58.42 mm (2.3 inches)
Depth. . . . . . . . . . . . . . . . . . . . . . .
133.35 mm (5.25 inches)
Weight (with cables) . . . . . . . . . .
0.4 kg (0.89 lb)
Temperature range:
Operating . . . . . . . . . . . . . . . .
0
°
to 40
°
C (32
°
to 104
°
F)
Storage . . . . . . . . . . . . . . . . . .
-40
°
to 70
°
C (-40
°
to 158
°
F)
CD-ROM Drive
3
Disc size . . . . . . . . . . . . . . . . . . . .
8 cm and 12 cm (no adapter required)
Data transfer rate:
Sustained . . . . . . . . . . . . . . . . .
900 KB/sec (mode 2 disc)
Burst . . . . . . . . . . . . . . . . . . . .
14.4 MB/sec (PIO mode 3)
Seek time:
3
Random . . . . . . . . . . . . . . . . . .
200 m/sec
Full-stroke . . . . . . . . . . . . . . . .
500 m/sec
The CD-ROM drive in your computer may have different specifications .
System Overview 1-11
Table 1-2. Technical Specifications (Continued)
CD-ROM Drive
3
(Continued)
Access time:
Random . . . . . . . . . . . . . . . . .
250 m/sec
Full-stroke . . . . . . . . . . . . . . .
550 m/sec
Memory buffer . . . . . . . . . . . . . . .
128 KB
Physical (Computer)
Height . . . . . . . . . . . . . . . . . . . . . .
63.0 mm (2.48 inches)
Width . . . . . . . . . . . . . . . . . . . . . .
280.9 mm (11.06 inches)
Depth . . . . . . . . . . . . . . . . . . . . . .
233.5 mm (9.19 inches)
3
Weight (with battery and hard-disk drive) . . . . . . . . . . . . . .
3.29 kg (7.26 lb)
Environmental
Temperature:
Operating . . . . . . . . . . . . . . . .
10
° to 40
°
C (50
°
to 104
°
F)
Storage . . . . . . . . . . . . . . . . . .
-40
° to 65
°
C (-40
°
to 149
°
F)
Relative humidity (maximum):
Operating . . . . . . . . . . . . . . . .
90% (noncondensing)
Storage . . . . . . . . . . . . . . . . . .
95% (noncondensing)
Maximum vibration:
Operating . . . . . . . . . . . . . . . .
0.51 GRMS, using a random-vibration spectrum that simulates truck shipment
Storage . . . . . . . . . . . . . . . . . .
1.1 GRMS, using a random-vibration spectrum that simulates air/truck shipment
The CD-ROM drive in your computer may have different specifications.
1-12 Dell Latitude XPi CD Service Manual
Table 1-2. Technical Specifications (Continued)
Environmental (Continued)
Maximum shock: 4
Operating . . . . . . . . . . . . . . . .
152.4 cm/sec (60 inches/sec) (less than or equal to a pulse width of 2 ms)
Storage . . . . . . . . . . . . . . . . . .
203.2 cm/sec (80 inches/sec)
(less than or equal to a pulse width of 2 ms)
Altitude (maximum):
Operating . . . . . . . . . . . . . . . .
3048 m (10,000 ft)
Storage . . . . . . . . . . . . . . . . . .
10,600 m (35,000 ft)
4
Measured with the hard-disk drive in head-parked position.
System Overview 1-13
1-14 Dell Latitude XPi CD Service Manual
Chapter 2
Initial Procedures
T his chapter describes initial procedures that can help you diagnose a computer problem. These procedures can often reveal the source of a problem or indicate the correct starting point for troubleshooting the computer. Dell recommends that you perform these procedures in the order they are presented in this manual.
I
nitial User Contact
When you first contact a user who has a computer problem, ask the user to describe the problem and the conditions under which it occurs. A verbal description can often indicate the cause of a problem or indicate the appropriate troubleshooting procedure to use. After the user describes the problem, follow these steps:
1. Ask the user to back up any data on the hard-disk drive if the system’s condition permits.
See “Maintaining Your Computer” in the online System User’s Guide.
2. Ask the user to try to duplicate the problem by repeating the operations he or she was performing at the time the problem occurred.
Can the user duplicate the problem?
Yes. Proceed to step 3.
No. Proceed to the next section, “Visual Inspection.”
3. Observe the user to determine whether he or she is making an error, such as typing an incorrect key combination or entering a command incorrectly.
Is the problem a result of user error?
Yes. Instruct the user in the proper procedure, or direct him or her to the appropriate user documentation for a description of the correct procedure.
No. Proceed to the next section, “Visual Inspection.”
V
isual Inspection
The visual inspection consists of a quick inspection of the exterior of the computer and any attached peripherals, including making any necessary corrections. For information about the proper removal and installation of computer
Initial Procedures 2-1
components, as instructed in the following procedures, see Chapter 4, “Removing and Replacing Parts.”
CAUTION: Before you proceed with the visual inspection, ensure that the user has saved all open files and exited all open application programs if possible.
To perform a visual inspection, follow these steps:
1. Turn off any attached peripherals.
2. Determine the present power state of the computer.
Look at the indicators to determine which of the following conditions apply, and then turn off the computer, taking the actions listed for that condition:
• Power/suspend indicator is blinking approximately every 8 seconds —
The computer is in suspend mode. Open the display and press any key to return the computer to the power-on state. If the computer does not turn on, press <FN><B> to return from battery-swap mode. Then slide the power button to turn off the computer.
• Low-battery indicator is on or blinking — A low-battery warning occurred; open the display and slide the power button to turn off the computer.
• Low-battery and charging indicators are both blinking — A defective battery is detected or the computer is too warm; slide the power button to turn off the computer.
• All indicators remain off — The computer is already turned off or is in suspend-to-disk mode.
3. Verify that the exterior of the computer is free of any obvious physical damage.
4. If the computer is operating from an AC adapter, verify the following:
• The AC adapter’s AC power cable is connected to the AC adapter and the power source.
• The AC adapter’s DC power cable is properly connected to the computer’s DC power input connector.
• The AC adapter and cables are free of any obvious physical damage.
NOTE: If the charging indicator and low-battery indicator flash continu-
ously while the computer is connected to AC power, disconnect the computer from AC power and move it to a cooler location. When the computer has cooled to room temperature, reconnect it to AC power and continue charging the battery. If the computer is not allowed to cool, the battery stops charging before it reaches full capacity.
2-2 Dell Latitude XPi CD Service Manual
5. If the computer is operating from battery power, remove the main battery assembly, verify that it is free of any obvious physical damage, and then reinsert the battery assembly into its compartment.
6. Turn off the computer. Remove the hard-disk drive, verify that it is free of any obvious physical damage, and then reinsert the drive into its compartment.
7. Remove any installed PC Cards from the PC Card slot, verify that they are free of any obvious physical damage, and then reinsert the card(s) into the PC Card slot.
8. Remove any memory modules from the memory compartment, verify that they are free of any obvious damage, and then reinstall the memory modules.
9. Open the display assembly, and verify that it is free of any obvious physical damage.
10. Verify that the internal keyboard is free of any obvious physical damage and that its keys operate freely.
11. Verify that the trackball and its associated switches operate freely.
12. If an external monitor is connected, verify the following:
• The monitor’s interface cable is properly attached to the VGA connector on the I/O panel.
• The monitor’s power cable is attached to a power source and is free of any obvious physical damage.
• The monitor’s controls are set according to the instructions in the documentation for the monitor.
• The monitor and its interface cable are free of any obvious physical damage.
13. If an external mouse is connected, verify the following:
• The mouse is properly connected to the keyboard/keypad/mouse connector on the computer’s I/O panel.
• The mouse and its cable are free of any obvious physical damage.
• The mouse’s ball and push buttons operate freely.
14. For any attached serial or parallel devices, verify the following:
• The device’s interface cable connector is correctly attached to the appropriate port connector on the computer’s I/O panel.
• The captive screws that secure the connectors at each end of the interface cable are secure enough to ensure a firm connection.
• The attached device and its interface cable are free of any obvious physical damage.
Initial Procedures 2-3
15. Turn on any attached peripherals and then the computer.
Does the problem reoccur?
Yes. Proceed to the next procedure, “Observing the Boot Routine.”
No. No further steps are necessary.
O
bserving the Boot Routine
After you perform a visual inspection as described in the previous section, boot the computer from a diagnostics diskette and, while the boot routine is running, observe the computer for any indications of problems.
NOTE: To prevent possible damage to the original diagnostics diskette, always use a backup copy of the diagnostics diskette when servicing a user’s computer.
Dell recommends that users make copies of the Dell diagnostics diskette. For
instructions, see “Before You Start Testing” in Chapter 4 of the Reference and
Troubleshooting Guide.
To observe the boot routine, follow these steps:
1. Turn off the computer and any attached peripherals.
2. Insert a diagnostics diskette into the diskette drive. Turn on all peripherals and then the computer.
3. Watch the indicators on the top of the keyboard. After all three indicators flash momentarily, the Num Lock indicator should light up and remain on.
Do these indicators light up within approximately 10 seconds after the boot routine starts?
Yes. Proceed to step 4.
No. Troubleshoot the power subsystem.
4. While the boot routine is running, observe the computer for any of the following:
• Diskette-drive and hard-disk drive access indicators — These indicators light in response to data being transferred to or from the drives. If either of these indicators fail to light during the boot routine, troubleshoot the diskette-drive or hard-disk drive subsystem, as appropriate.
• Beep codes — A beep code is a series of beeps that indicates an error condition. If the computer emits a beep code, go to Table 3-1.
NOTE: The computer beeps once during the boot routine. This single beep is normal and is not a beep code.
• System error messages — These messages can indicate problems or provide status information. If a system error message displays, go to
Table 3-2.
2-4 Dell Latitude XPi CD Service Manual
5. Observe the display for the Diagnostics Menu.
Does the Diagnostics Menu display?
Yes. See “Running the Dell Diagnostics” in Chapter 3.
No. Proceed to step 6.
6. Insert another copy of the diagnostics diskette into the diskette drive, and reboot the computer.
Does the Diagnostics Menu display?
Yes. See “Running the Dell Diagnostics” in Chapter 3.
No. Proceed to the next section, “Eliminating Resource Conflicts.”
E
liminating Resource Conflicts
Devices within the computer may require dedicated memory spaces, interrupt levels, or DMA channels, all of which must be allocated during installation of the devices. Because a device may be installed at a different time, it is possible that the same resource is assigned to two or more devices.
Resource conflicts can result in disorderly or erratic computer operation or failure of the computer to operate at all. If you suspect that resource conflicts might exist, check the computer and reassign the resources as necessary.
For more information about resolving conflicts, see Chapter 3, “Troubleshooting Your Computer,” in the Reference and Troubleshooting Guide.
G
etting Help
If none of the procedures in this chapter reveal the source of the problem or lead to the proper troubleshooting steps for determining the source of the problem, call Dell for technical assistance. For instructions, see Chapter 5, “Getting
Help,” in the Reference and Troubleshooting Guide.
Initial Procedures 2-5
2-6 Dell Latitude XPi CD Service Manual
Chapter 3
Beep Codes and Error Messages
T his chapter describes beep codes and system error messages that can occur during computer start-up or, in the case of some failures, during normal computer operation. The tables in this chapter list faults that can cause a beep code or system error message to occur and the probable causes of the fault in each case.
If a faulty computer does not emit beep codes or display system error messages to indicate a failure, use the Dell diagnostics to help isolate the source of the problem. See “Running the Dell Diagnostics” found later in this chapter.
P
OST Beep Codes
If the display cannot display error messages during the POST, the computer may emit a series of beeps that identifies the problem or that can help you identify a faulty component or assembly. The following table lists the beep codes that may be generated during POST. Most beep codes indicate a fatal error that requires replacement of the system board or other corrective actions before the computer can operate.
Table 3-1. POST Beep Codes
Beep Code Error
1-1-3 NVRAM write/read failure
Probable Causes
BIOS corrupted; system board faulty
1-1-4
1-2-1
1-2-2
1-2-3
1-3-1 through
2-4-4
ROM BIOS checksum failure
Programmable interval timer failure
DMA initialization failure
DMA page register write/read failure
Installed memory module(s) not being properly identified or used
BIOS corrupted; system board faulty
System board faulty
System board faulty
System board faulty
Memory module improperly seated or system memory controller faulty
(system board faulty)
Beep Codes and Error Messages 3-1
4-2-1
4-2-2
4-2-3
4-2-4
Beep Code Error
3-1-1
Table 3-1. POST Beep Codes (Continued)
Slave DMA register failure
Probable Causes
System board faulty
3-1-2
3-1-3
Master DMA register failure
Master interrupt mask register failure
System board faulty
3-1-4
3-2-4
3-3-4
Slave interrupt mask register failure
Keyboard controller test failure
Display memory test failure
Keyboard assembly faulty or system board faulty
System board faulty
3-4-1
3-4-2
4-3-1
4-3-3
4-3-4
4-4-1
4-4-2
4-4-3
Display initialization failure
Display retrace test failure
No timer tick System board faulty
Shutdown failure
Gate A20 failure
Unexpected interrupt in protected mode
Memory failure above address 0FFFFh
Memory module improperly seated or system memory controller faulty
(system board faulty)
System board faulty Timer chip counter 2 failure
Time-of-day clock stopped
Serial port failure
Reserve battery faulty or system board faulty
System board faulty
Parallel port test failure System board faulty
Math coprocessor failure
System board faulty
3-2 Dell Latitude XPi CD Service Manual
5-1-1
Table 3-1. POST Beep Codes (Continued)
Beep Code Error Probable Causes
System board faulty System powermanagement interrupt initialization failure
5-1-2
5-1-3
5-2-1
BIOS shadowing failure
Video BIOS shadowing failure
Keyboard controller download failure
5-2-2
5-2-3
5-2-4
CPU stepping failure
System board failure
Setup decompression and shadowing failure
S
ystem Error Messages
The following table lists (in alphabetical order) system error messages that may appear on the display during the boot routine or during normal computer operation.
Table 3-2. System Error Messages
Message
Auxiliary device failure
Bad command or
File Name
Definition
Integrated trackball or external PS/2 mouse failed.
Command entered does not exist or is not in pathname specified.
Probable Causes
Integrated trackball or external PS/2 mouse faulty.
Bad command or filename entered.
Cache disabled due to failure
Data error
Microprocessor’s internal cache memory failed.
Diskette or hard-disk drive cannot read the data.
System board faulty.
Faulty diskette/tape drive subsystem or hard-disk drive subsystem.
Beep Codes and Error Messages 3-3
Message
Decreasing available memory
Table 3-2. System Error Messages (Continued)
Definition Probable Causes
Informational message indicating memory is failing (usually preceded by memory error message).
One or more DIMMs faulty or improperly seated.
Disk C: failed initialization
Hard-disk drive failed to initialize.
Hard-disk drive data in System Setup does not match installed hard-disk drive, or hard-disk drive faulty.
Diskette drive 0 seek failure
System cannot read diskette in diskette drive.
System files missing or corrupted.
Diskette faulty or incorrectly inserted in drive.
Diskette read failure System Setup contains incorrect settings.
Diskette drive interface loose or faulty.
Diskette drive faulty.
System board faulty.
Diskette subsystem reset failed
Diskette subsystem failed to respond to reset command from computer.
Diskette writeprotected
Error reading
PCMCIA card
Diskette is writeprotected, operation cannot be completed.
Drive not ready The diskette may be missing from or improperly installed in the diskette drive.
Computer cannot identify
PC Card.
Diskette writeprotected.
Defective or unformatted diskette.
PC Card faulty, improperly seated, or improperly configured. System board faulty.
PC Card software faulty or incorrectly installed.
3-4 Dell Latitude XPi CD Service Manual
Message
Table 3-2. System Error Messages (Continued)
Definition Probable Causes
Extended memory size has changed
Amount of memory recorded in NVRAM not matching memory installed in computer.
One or more memory module(s) faulty or improperly seated.
Gate A20 failure Computer cannot enable protective mode.
One or more memory module(s) faulty or improperly seated.
General failure
Hard-disk drive configuration error
Message indicates system failure.
Computer cannot identify hard-disk drive type.
System board faulty.
Operating system unable to carry out the command.
Installed hard-disk drive not compatible with computer.
System board faulty.
Hard-disk drive controller failure 0
Hard-disk drive controller failure 0
Hard-disk drive or controller not responding to commands from computer.
The CD-ROM drive does not respond to commands from the computer.
Hard-disk drive failure
Hard-disk drive not responding to commands from computer.
Hard-disk drive read failure
Invalid configuration information — please run
System Setup program
System Setup contains invalid settings.
Keyboard controller failure
Keyboard clock line failure
System board faulty.
Computer needs rebooting.
Hard-disk drive faulty.
Incorrect settings in
System Setup.
Reserve battery weak or depleted.
Keyboard controller not responding.
Cable or connector loose, or keyboard faulty.
Keyboard not responding.
Cable or connector loose, or keyboard faulty.
Keyboard data line failure
Beep Codes and Error Messages 3-5
Message
Table 3-2. System Error Messages (Continued)
Definition Probable Causes
Keyboard stuck key failure
Keyboard key(s) jammed.
For external keyboard or keypad, cable or connector loose or keyboard faulty.
For built-in keyboard, keyboard faulty.
For either keyboard, key may have been pressed while computer was booting.
Installed memory module faulty or improperly seated.
Memory address line failure at address, read value expecting value
Memory allocation error
Memory control logic not operating properly.
The software in use conflicts with the operating system, an application program, or a utility
Faulty application program
3-6 Dell Latitude XPi CD Service Manual
Message
Table 3-2. System Error Messages (Continued)
Definition Probable Causes
Memory data line failure at address, read value expecting value
Memory not operating properly.
Installed memory module faulty or improperly seated.
Memory double word logic failure at a ddress, read value expecting value
Memory odd/even logic failure at address, read value expecting value
Memory write/ read failure at address, read value expecting value
No boot device available
Computer not recognizing diskette drive or hard-disk drive from which it is trying to boot.
No boot sector on harddisk drive.
No boot sector on hard-disk drive
No timer tick interrupt
Non-system disk or disk error
Timer on system board malfunctioning.
Unable to boot from harddisk drive or diskette drive.
No boot device available.
Operating system boot files missing or corrupted.
System board faulty.
No operating system files on harddisk drive or diskette.
Not a boot diskette
Optional ROM bad checksum
ROM in external device failed.
Sector not found MS-DOS
®
unable to locate a sector on diskette or hard-disk drive.
Optional ROM in external device faulty.
Bad sector or corrupted FAT on diskette or hard-disk drive.
Beep Codes and Error Messages 3-7
Message
Table 3-2. System Error Messages (Continued)
Definition Probable Causes
Seek error MS-DOS unable to find specific track on diskette or hard-disk drive.
Defective diskette or hard-disk drive.
Shutdown failure
Time-of-day clock lost power
Microprocessor unable to reset.
System clock stopped.
System board faulty.
Reserve battery lost its charge.
Time-of-day clock stopped
Time-of-day not set—please run the System Setup program.
Timer chip counter 2 failed
Unexpected interrupt in protected mode
Warning! Battery is critically low.
Time or date stored in RTC does not match system clock.
Reserve battery lost its charge.
System board faulty.
System board faulty.
Timer circuit on system board malfunctioning.
Keyboard/mouse controller malfunctioning, or memory module(s) not responding.
Main battery has lost its charge.
One or more memory module(s) faulty or improperly seated.
Main battery needs recharging.
R
unning the Dell Diagnostics
The diagnostics contains tests that aid in troubleshooting the computer. If needed, see Chapter 4, “Running the Dell Diagnostics,” in the Reference and
Troubleshooting Guide. The diagnostics diskette contains the following test groups:
• RAM — Tests the main memory
• System Set — Tests the system board’s primary functions
• Video — Tests the video subsystem
• Keyboard — Tests the keyboard subsystem
• Mouse — Tests the mouse/trackball subsystem
• Diskette Drives — Tests the diskette drive subsystem
• Hard-Disk Drives (Non-SCSI) — Tests the IDE hard-disk drive subsystem
• IDE CD-ROM Drives — Tests the CD-ROM drive subsystem
3-8 Dell Latitude XPi CD Service Manual
• Serial Ports — Tests the serial communication port
• Parallel Ports — Tests the parallel communication port
• SCSI Devices — Tests the SCSI controller in the Advanced Port
Replicator
• Network Interface — Tests the network controller in the Advanced Port
Replicator
• Serial Infrared — Tests the IrDA communications port
• Audio — Tests the built-in sound subsystem
CAUTION: To prevent possible damage to the original diagnostics diskette, always use a backup copy of the diagnostics diskette when servicing a user’s system. If the user has not already made a backup copy of the diagnostics diskette, do so before you run the diagnostics.
To start the diagnostics, turn off the computer, insert a diagnostics diskette into the diskette drive, and then turn on the computer.
Starting the diagnostics causes the Dell logo screen to appear, followed by a message indicating that the diagnostics is loading. Before the diagnostics loads, a program tests the portion of main memory (RAM) required for loading the diagnostics. If a main memory error is detected, a message appears on the screen telling you which memory address failed.
If no errors are found in main memory, the diagnostics loads and the Diagnostics Menu appears. This menu lets you choose the following options or exit to the MS-DOS prompt:
•
RUN QUICK TESTS — Runs selected tests from all test groups to quickly locate the failure or to indicate where further testing may be needed to isolate a failure
• RUN ALL TESTS — Runs all tests for a thorough test of the computer
•
RUN SPECIFIC TESTS — Tests a particular area or subsystem
Beep Codes and Error Messages 3-9
3-10 Dell Latitude XPi CD Service Manual
Chapter 4
Removing and Replacing Parts
T his chapter provides instructions for removing and replacing fieldreplaceable components, assemblies, and subassemblies. For removal and replacement procedures for factory-replaceable parts, see Appendix A,
“Factory Repair Parts.”
Unless otherwise noted, each procedure in this chapter assumes the following:
• The computer and any attached peripherals are turned off, and the peripherals are disconnected from the I/O panel on the back of the computer.
• A part can be replaced by performing the removal procedure in reverse order.
When the display assembly is open nearly 180 degrees, use a book or something similar to support the display assembly. The angle of the display assembly with respect to the bottom case should never be allowed to exceed 180 degrees. Also, when performing the procedures in this chapter, the locations or directions relative to the computer are as shown in Figure 4-1 unless otherwise specified.
back of computer right side left side
front of computer
Figure 4-1. Computer Orientation
Removing and Replacing Parts 4-1
R
ecommended Tools
Most of the procedures in this guide require the use of one or more of the following tools:
• Small flat-blade screwdriver
• Jeweler’s screwdriver set
• Number 1 magnetized Phillips-head screwdriver
• Number 2 magnetized Phillips-head screwdriver
• Chip-removal tool
• Wrist grounding strap
• Small plastic scribe
• Nut drivers
P
recautionary Measures
WARNING: FOR YOUR PERSONAL SAFETY AND PROTECTION
OF THE EQUIPMENT, PERFORM THE FOLLOWING STEPS IN
THE SEQUENCE LISTED.
Before you start to work on the computer, perform the following steps:
1. Turn off the computer and any attached peripherals.
NOTE: Make sure the computer is turned off and not in suspend-to-disk mode. See “Controlling Computer Power” in Chapter 1.
2. Disconnect the computer and any attached peripherals from AC power sources to reduce the potential for personal injury or shock. Also disconnect any telephone or telecommunications lines from the computer.
3. Remove the main battery assembly from the battery compartment.
Slide the battery compartment door downward until it stops (about
3/16 of an inch). Slide the main battery assembly out.
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battery battery door
Figure 4-2. Main Battery Assembly Removal
Part or Assembly Name
Main battery assembly
Order Name
CUS,BTRY,SAR,36WHR,LXP
4. To avoid possible damage to the computer from ESD, ground yourself by attaching a wrist grounding strap to yourself and an unpainted metal surface on the I/O panel.
If a wrist grounding strap is not available, you can discharge static electricity from your body by periodically touching the unpainted metal surface of the I/O panel.
Removing and Replacing Parts 4-3
S
crew Identification and Tightening
A6 (35 mm)
(screw A6 is 35 mm)
35 mm
match length here
Figure 4-3. Screw Identification
CAUTION: It is essential that the correct length screw be used when reinstalling a screw. Otherwise, hardware damage could result. Make sure that the screw is properly aligned with its corresponding hole, and avoid overtightening.
The removal procedure illustrations provide the correct screw length in parentheses next to the screw’s label. Also, a graphic for that length screw is included in the illustration. Match the actual screw to the graphic in the illustration to check for correct length.
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Z
IF Connectors
movable part of connector; do not remove
Figure 4-4. Disconnecting an Interface Cable
Some of the computer’s interface connectors are zero insertion force (ZIF) connectors. These connectors are not removable, but they must be released to disconnect a cable from them.
CAUTION: The ZIF connectors are fragile. To avoid damage, do not apply too much pressure to the movable part of the connector.
To disconnect an interface cable from a ZIF connector, follow these steps:
1. Insert a small flat-blade screwdriver or a chip-removal tool under the movable part of the connector.
If a small flat-blade screwdriver is unavailable, use a chip-removal tool to carefully pry up on first one end of the movable part of the connector and then the other end.
2. Pull gently upward on the movable part of the connector until it releases the interface cable.
3. Grasp the interface cable and pull it out of the connector.
To reconnect an interface cable to a ZIF connector, follow these steps:
1. Use a flat-blade screwdriver or chip-removal tool to open the movable part of the ZIF connector.
2. Orient the end of the interface cable with the ZIF connector, and insert the end of the cable into the connector.
3. While holding the cable in place, close the ZIF connector.
To ensure a firm connection, make sure the ZIF connector is completely closed.
Removing and Replacing Parts 4-5
F
ield-Replaceable Parts and Assemblies
display assembly trackball assembly palmrest assembly
CD-ROM
EMI clip keyboard keyboard EMI clip left tilt-support foot
PC Card superpart assembly dust cover for the Advanced
Port Replicator connector
I/O panel dust cover hard-disk drive assembly bottom case assembly right tilt-support foot main battery memory compartment cover
Figure 4-5. Exploded View—Computer
CD-ROM/diskette drive assembly
The computer is divided into three major assemblies: the palmrest assembly
(which contains the keyboard and the trackball), the display assembly (which contains the LCD), and the bottom case assembly (which contains many of the removable parts).
4-6 Dell Latitude XPi CD Service Manual
The following subsections provide instructions for removing and replacing these parts and assemblies. Some of the instructions are preceded by a table listing the Dell order name for the part or assembly being replaced. A more detailed breakdown of parts and assemblies can be found in Appendix A, “Factory Repair Parts.”
Hard-Disk Drive Assembly
front of computer hard-disk drive drive latch drive door
PC Card slot
Figure 4-6. Hard-Disk Drive Assembly Removal
Part or Assembly Name Order Name
Hard-disk drive assembly CUS,HD,xxxxx,yyMM,zzz,LXP *
* Substitute the drive capacity for xxxxx, the drive height for yy, and the
manufacturer for zzz.
To remove the hard-disk drive assembly, follow these steps:
1. Slide the drive latch toward the front of the computer to release the hard-disk drive assembly from the hard-disk drive bay.
The latch is on the left-front corner of the computer.
2. Grasp the drive door and pull the drive out of the computer.
When reinserting the drive into the drive bay, ensure that the drive latch is open.
Then slide the drive completely into the hard-disk drive bay.
CAUTION: The hard-disk drive is very sensitive to shock. Handle the assembly with care and avoid dropping it even from a height of 1 inch.
Removing and Replacing Parts 4-7
Memory Compartment Cover
memory compartment cover
Figure 4-7. Memory Compartment Cover Removal
Part or Assembly Name
Memory compartment cover
Order Name
CVR,MEM,LXPiCD
To remove the memory compartment cover, follow these steps:
CAUTION: Make sure the work surface is clean to prevent scratching the computer cover.
1. Turn the computer upside down on the work surface.
2. To release the memory compartment cover, press down on the identation in the edge of the cover, and then slide the cover towards the edge of the computer.
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Memory Modules
memory module sockets
Figure 4-8. Memory Module Removal
Part or Assembly Name
Memory module, 4-MB
Memory module, 8-MB
Memory module, 16-MB
Order Name
CUS,MEM,4M,LXP4D/T,LXPi
CUS,MEM,8M,LXP4D/T,LXPi
CUS,MEM,16M,LXP4D/T,LXPi
To remove a memory module, follow these steps:
1. Remove the memory compartment cover.
2. To release a memory module from its socket, gently push outward on each of the memory module’s two metal retaining clips.
The memory module should rotate upward out of its retaining clips.
3. Lift the memory module out of its socket.
Memory modules can be installed only one way. Do not attempt to force the memory module into the socket. Align the notch in one corner of the memory module with the corresponding indent in the memory module socket.
Removing and Replacing Parts 4-9
P
almrest Assembly
The palmrest assembly consists of the trackball and the keyboard.
display assembly keyboard palmrest assembly trackball assembly
CD-ROM EMI clip trackball cable connector JTB connector JKB1 connector JKB2 bottom case assembly
Figure 4-9. Palmrest Assembly Removal
Part or Assembly Name
Palmrest assembly with sound
Order Name
SVC,ASSY,PLMRST,LXPiCD
To remove the palmrest assembly, follow these steps:
1. Remove any installed PC Card(s).
2. Disconnect any cables attached to the audio ports.
3. Remove the hard-disk drive assembly.
CAUTION: Make sure the work surface is clean to prevent scratching the computer cover.
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4. Close the display assembly, and turn the computer upside down on a flat work surface.
5. Remove the three palmrest-assembly retaining screws A1, A2, and A3
(see Figure 4-10).
A2 (35 mm)
A3 (35 mm)
A1 (35 mm)
35 mm
Figure 4-10. Palmrest-Assembly Retaining Screws
6. Turn the computer right-side up on the work surface, and open the display assembly.
NOTE: Remember to support the display assembly with a book or similar object so that the display assembly does not open beyond 180 degrees.
7. Release the palmrest assembly from the bottom case assembly (see Fig- ure 4-9).
To release the palmrest assembly, lift the front of the assembly upward with one hand approximately 1 inch. Then, with the fingers of the other hand, disconnect the trackball cable from LIF connector JTB.
8. Rotate the front of the palmrest assembly towards the display assembly.
9. Disconnect the two keyboard cables from ZIF connectors JKB1 and
JKB2.
10. Carefully lift the palmrest assembly from the bottom case assembly.
The keyboard is captured in the palmrest by snaps and tabs.
Removing and Replacing Parts 4-11
To reseat the palmrest assembly on the bottom case assembly, set the palmrest assembly down, slightly forward of its original position, on top of the bottom case assembly. Then push down on all sides of the palmrest assembly while sliding the assembly toward the back of the computer.
Ensure that the palmrest assembly is properly aligned and fully seated on the bottom case assembly and that all of the mounting tabs are fully engaged. Then close the display assembly, turn the computer upside down on the work surface, and reinstall retaining screws A1, A2, and A3 (see Figure 4-10).
CAUTION: Be careful not to bend the CD-ROM EMI clip. Set the palmrest assembly top side down, when the palmrest assembly is free from the bottom case assembly.
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Trackball Assembly
trackball assembly trackball cable
A5 (6 mm)
A4 (6 mm) palmrest assembly
6 mm
Figure 4-11. Trackball Assembly Removal
Part or Assembly Name
Optical trackball assembly
Order Name
SVC,ASSY,TBALL/SWT,LXPi+
To remove the trackball assembly, follow these steps:
1. Remove the palmrest assembly.
2. Turn the palmrest assembly upside down on a flat work surface.
3. Remove screws A4 and A5.
4. Lift the trackball assembly out of the palmrest assembly.
NOTE: It is not necessary to remove the trackball button board when removing the trackball assembly.
Removing and Replacing Parts 4-13
Keyboard Assembly
press palmrest assembly trackball assembly press keyboard
Figure 4-12. Keyboard Assembly Removal
Part or Assembly Name
Keyboard assembly, Belgium
Keyboard assembly, China
Keyboard assembly, domestic
Keyboard assembly, Danish
Keyboard assembly, French
Order Name
KYBD,86,BEL,ALPS,LXPi+
KYBD,85,CHI,ALPS,LXPi+
SVC,KYBD,85,DOM,LXPi+
KYBD,86,DEN,ALPS,LXPi+
KYBD,86,FR,ALPS,LXPi+
Keyboard assembly, French/
Canadian
Keyboard assembly, German
KYBD,85,FR,CAN,ALPS,LXPi+
Keyboard assembly, Japan
Keyboard assembly, Korean
KYBD,86,GER,ALPS,LXPi+
KYBD,87,JPN,LXPi+
KYBD,85,KOREA,ALPS,LXPi+
Keyboard assembly, Latin American KYBD,86,LTN,ALPS,LXPi+
Keyboard assembly, Norwegian
Keyboard assembly, Russian
Keyboard assembly, Spanish
Keyboard assembly, Swedish
KYBD,86,NOR,ALPS,LXPi+
KYBD,86,RUS,ALPS,LXPi+
KYBD,86,SPN,ALPS,LXPi+
KYBD,86,SWE,ALPS,LXPi+
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Part or Assembly Name
Keyboard assembly, Swiss
Keyboard assembly, Thailand
Keyboard assembly, United
Kingdom
Order Name
KYBD,86,SWI,ALPS,LXPi+
KYBD,85,THAI,ALPS,LXPi+
KYBD,84,UK,LXPi+
To remove the keyboard assembly, follow these steps:
1. Remove the palmrest assembly.
2. Press along the sides of the keyboard to release the keyboard from the palmrest assembly.
Removing and Replacing Parts 4-15
D
isplay Assembly
For removal procedures, the display assembly consists of the following:
• Tilt-support foot
• Display assembly bezel
• Display assembly latch and latch spring
• LCD panel
• LCD inverter board
• Hinge covers
• Display-assembly interface cable
• Microphone/switch assembly
Tilt-Support Foot
right tilt-support foot tab
10 mm finger-access recess foot retaining screw (10 mm) cover
Figure 4-13. Tilt-Support Foot Removal
Part or Assembly Name
Tilt-support foot, left
Tilt-support foot, right notch
Order Name
FOOT,PLSTC,REAR,LF,LXPiCD
FOOT,PLSTC,REAR,RT,LXPiCD
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To remove a tilt-support foot, follow these steps:
1. Close the display assembly.
2. With the foot set to its fully retracted position, insert a small device
(such as a scribe) into the bottom notch on the foot-retaining screw cover and gently lift out the cover partway. Lift on the sides of the cover, working around to the top, and then lift out the cover.
3. Remove the foot retaining screw.
The foot retaining screw also functions as a mounting screw for one of the display assembly hinges, which has a threaded hole for the screw.
Therefore, the foot retaining screws cannot be reinstalled with the display assembly removed.
The foot-retaining screw cover can fit only one way in the foot. To reinstall the cover, make sure the tilt-support foot is in its fully retracted position.
Then orient the cover with the notch toward the bottom of the computer and its mounting tab toward the top of the computer. Press in on the cover until it snaps into place.
Removing and Replacing Parts 4-17
Display Assembly
left tilt-support foot connector JLCD
6 mm
C1 (6 mm)
C2 (6 mm) display assembly detent post connector JMIC right tilt-support foot
Figure 4-14. Display Assembly Removal
Part or Assembly Name
Display assembly
Order Name
ASSY,LCD,TFT,SVGA,12.1”,
LXPiCD
To remove the display assembly, follow these steps:
1. Remove the palmrest assembly.
2. Remove the computer’s tilt-support feet.
3. Remove interface-cable grounding screws C1 and C2 from the display assembly.
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4. Disconnect the display-assembly interface cable from connector JLCD on the system board.
To disconnect the cable, grasp the pull tab and pull it straight up from the system board.
5. Disconnect the microphone cable from ZIF connector JMIC.
6. Lift the display assembly from the bottom case assembly.
A plastic detent post located approximately at the center of the display assembly may hang on the bottom case assembly. If so, carefully push the center of the display assembly away from the bottom case assembly.
Removing and Replacing Parts 4-19
l
Display Assembly Bezel
display assembly bezel screw covers (4)
H2 (10 mm) display assembly base
H1 (10 mm)
H3 (10 mm) hinge
10 mm
Figure 4-15. Display Assembly Bezel Removal
H4 (10 mm)
Part or Assembly Name
Bezel service kit, 12.1-inch
Order Name
SVC,BZL,LCD,TFT,LXPiCD
Display case service kit, 12.1-inch SVC,CVR,BK,TFT,LXPi+
To remove the display assembly bezel, follow these steps:
1. Use a scribe to pry the retaining screw covers out of the screw holes in the bezel.
2. Remove retaining screws H1, H2, H3, and H4.
3. Separate the bezel from the display assembly.
Insert your fingertips between the bezel and the LCD, and lift upward on the bezel to release the hidden tabs just above the indicator panel, as well as the hidden tabs beneath each side of the bezel. Then slide the bezel toward the front of the computer, and lift it up and away from the display assembly.
When replacing the bezel, orient the bezel in its original position on the display assembly and press firmly near each tab until it snaps into position. Be careful to have the display latch and spring properly assembled.
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Display Assembly Latch and Latch Spring
latch spring latch display assembly bezel
Figure 4-16. Display Assembly Latch and Latch Spring Removal
Part or Assembly Name
Display assembly latch
Display assembly latch spring
Order Name
LTCH,LXPiCD
SPR,LTCH,LXPiCD
To remove the display assembly latch and latch spring, follow these steps:
1. Remove the display assembly bezel.
2. Turn the display assembly bezel upside down on the work surface.
3. While holding down the display-assembly latch spring, slide the latch against the spring, rotate the latch upward, and lift the latch and spring out of the bezel.
Removing and Replacing Parts 4-21
LCD Panel
interface cable interface connector
LCD inverter board
LCD panel
LCD power cable connector CN2 display assembly case
Figure 4-17. LCD Panel Removal
Part or Assembly Name Order Name
LCD panel LCD,TFT,SVGA,12.1”,SAMSUNG
LCD assembly, LCD inverter board, active-matrix color, TFT SVGA display
SVC,LCD/INVTR,TFT,LXPiCD
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To remove the LCD panel, follow these steps:
1. Remove the display assembly bezel.
2. Lift the lower edge of the LCD panel about 1 inch.
3. Disconnect the LCD-assembly power cable from connector CN2 on the
LCD inverter board.
4. Lift the lower edge of the LCD panel approximately 3 inches.
5. Disconnect the display-assembly interface cable from the LCD interface connector on the underside of the LCD panel.
6. Lift the LCD panel out of the display assembly case.
Removing and Replacing Parts 4-23
LCD Inverter Board
I1 (5 mm)
I2 (5 mm) retaining bracket connector CN1 inverter board
5 mm connector CN2
LED board display assembly case
Figure 4-18. LCD Inverter Board Removal
Part or Assembly Name
LCD inverter board
Order Name
ASSY,BD,INVRTR,TFT,SVGA12.1”
To remove the LCD inverter board, follow these steps:
1. Remove the display assembly bezel.
2. Remove screws I1 and I2 securing the display-interface cable retaining bracket, and then remove the bracket.
3. Move the LED board out of the display assembly case far enough to gain access to the LCD inverter board.
4. Disconnect the LCD-inverter board interface cable from ZIF connector
CN1 on the LCD inverter board.
5. Lift the LCD inverter board about 1/4 of an inch.
6. Disconnect the LCD power cable from connector CN2 on the LCD inverter board.
7. Lift the LCD inverter board out of the display assembly case.
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Hinge Covers
display assembly base hinge cover hinge
Figure 4-19. Hinge Covers Removal
Each of the hinge covers is held in place by three tabs that fit into slots on the display assembly base. The microphone is inside the right hinge cover. To remove the hinge covers, follow these steps:
1. Remove the display assembly from the computer.
2. Place the display assembly faceup on the work surface.
3. Rotate the display assembly base until the display assembly hinges are pointing upward at approximately a 45-degree angle.
4. To remove a hinge cover, press in on the front of the cover to release the hinge cover’s front tab. Then rotate the cover in the direction of the arrow, and lift the cover away from the display assembly base.
To replace the hinge covers, set the display assembly base in the position shown, and reinsert the hinge cover into its original position, making sure that its two tab slots engage the tabs on the display assembly base. Then rotate the hinge cover opposite to the direction shown in Figure 4-18 until its front tab engages the tab slot in the display assembly base.
Removing and Replacing Parts 4-25
Display-Assembly Interface Cable
I1 (5 mm)
I2 (5 mm) display-assembly interface cable retaining bracket bobbin connector CN1
5 mm
LED board alignment marks on cable alignment notch in shoulder
Figure 4-20. Display-Assembly Interface Cable Removal
Part or Assembly Name Order Name
LCD cables, active-matrix, TFT
SVGA display (includes displayassembly interface, LED board, and
LCD-inverter-board interface cables)
SVC,CBL,LCD,TFT,SAMSUNG,
LXPiCD
The display-assembly interface cable connects the system board, LCD panel,
LCD inverter board, and LED board. The cable wraps around a bobbin. To remove the display-assembly interface cable, follow these steps:
1. Remove the display assembly.
2. Remove the display assembly bezel.
3. Remove the LCD panel.
4. Remove the left hinge cover.
5. Remove screws I1 and I2 securing the display-interface cable retaining bracket, then remove the bracket.
6. Disconnect the display-assembly interface cable from ZIF connector
CN1 on the LCD inverter board.
4-26 Dell Latitude XPi CD Service Manual
7. Lift the display-assembly interface cable and bobbin out of the display assembly.
NOTE: Some computers have a display-assembly interface cable that detaches from the bobbin. If you have a cable with a permanently attached bobbin, stop here; otherwise, proceed to Step 8.
8. Look at the alignment marks on the display-assembly interface cable, and note the alignment of the cable to the bobbin. Then carefully detach the cable from the bobbin.
A double-sided adhesive strip attaches the cable to the bobbin (see
Figure 4-20).
9. To reattach the display-assembly interface cable to the bobbin, align the marks on the cable with the notch in the shoulder of the bobbin, and then wrap the cable around the bobbin.
If you are installing a new cable, remove the protective cover from the adhesive strip on the new cable. Align the alignment marks on the cable with the notch in the shoulder of the bobbin, and then wrap the cable around the bobbin, making sure it stays between the shoulders of the bobbin. Place the cable and bobbin into the display assembly before attaching the EMI shield.
Removing and Replacing Parts 4-27
Microphone/Switch Assembly
right hinge cover microphone cover microphone/switch assembly magnet switch microphone/switch cable
Figure 4-21. Microphone/Switch Assembly Removal
Part or Assembly Name
Microphone service kit
Order Name
SVC,MIPHN/SWT,LXPiCD
The microphone/switch assembly is inside the right hinge cover. There is a microphone and a magnetic reed switch on the microphone/switch assembly. To remove the microphone/switch assembly, follow these steps:
1. Remove the display assembly.
2. Remove the right hinge cover. (Before doing so, note the correct routing of the microphone cable around the display assembly base.)
3. Remove the microphone cover from the right hinge cover.
4. Open the microphone cover, and remove the microphone/switch assembly.
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B
ottom Case Assembly
The bottom case assembly consists of the following:
• Diskette/CD-ROM assembly
• Deck-buoy
• Superpart assembly
• System board
• 3.1-V power supply board
• I/O-panel dust cover
• Dust cover for the Advanced Port Replicator
• Audio board
Removing and Replacing Parts 4-29
superpart docking EMI clip audio board system board assembly keel plate bottom case assembly memory compartment cover diskette/CD-ROM assembly
Figure 4-22. Bottom Case Assembly Removal
Part or Assembly Name
Bottom case assembly
Order Name
ASSY,CVR,BTM,LXPiCD
I/O bracket clip superpart serial EMI clip superpart assembly
3.1-V power supply
I/O bracket clip spreader plate dust cover for the
Advanced Port
Replicator
I/O panel dust cover
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Diskette/CD-ROM Drive Assembly
CD-ROM flex cable
D3 (2 mm)
D9 (2 mm)
D4 (2 mm)
D1 (4 mm)
D2 (4 mm) bracket
4 mm
2 mm plastic flip lock
CD-ROM drive diskette drive
D5 (2 mm)
D6 (2 mm)
D7 (2 mm)
D8 (2 mm) connector JCDROM connector JFLOP tab
Figure 4-23. Diskette/CD-ROM Drive Assembly Removal
Part or Assembly Name
Diskette drive assembly
CD-ROM drive assembly
Order Name
SVC,ASSY,FD,LXPiCD
SVC,ASSY,CDROM,LXPiCD
To remove the diskette/CD-ROM drive assembly, follow these steps:
1. Remove the palmrest assembly.
2. Remove screws D1 and D2 securing the diskette/CD-ROM drive assembly to the bottom case assembly.
3. Lift the back of the drive assembly slightly, and then slide the drive assembly toward the back of the computer about 1/4 of an inch bottom case assembly
Removing and Replacing Parts 4-31
4. Lift the drive assembly straight up about 1 inch.
The front edge of the drive assembly engages tabs on the bottom case assembly. Make sure the diskette drive assembly is clear of the tab before attempting to lift it out of the bottom case assembly.
CAUTION: Before removing the diskette drive and CD-ROM drive interface cables from connectors JFLOP and JCDROM, release each connector’s plastic flip lock (see Figure 4-23). Do not pull the interface cable from the connector; doing so can ruin the cable’s electrical conductivity.
5. Disconnect the diskette drive and CD-ROM drive interface cables from connectors JFLOP and JCDROM on the system board.
6. Lift the drive assembly out of the bottom case assembly.
When replacing the drive assembly, first connect the two drive interface cables to the system board. Then lower the drive assembly into the bottom case assembly, beginning with its forward edge, so that the diskette drive board fits between the tabs in the corner of the bottom case assembly.
CAUTION: Use care when handling the diskette/CD-ROM drive; it is fragile and will bend if handled improperly. Place the assembly on a flat work surface, and carefully remove the small 2-mm screws. Do not bend either the drives or the bracket. If bending occurs, the diskette or
CD-ROM will not function correctly when inserted in the drive.
To separate the diskette/CD-ROM assembly into a diskette drive and a
CD-ROM drive, remove screws D3 through D9. Lift up the CD-ROM, and remove it from the assembly. Slide the CD-ROM flex cable out of the slot in the bracket that holds the CD-ROM to the diskette drive.
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Deck Buoy
B1 (10 mm)
B2 (10 mm)
B3 (10 mm) deck buoy
10 mm bottom case assembly
Figure 4-24. Deck Buoy Removal
Part or Assembly Name
Deck buoy
Order Name
ASSY,CLMP,THRM,LXPiCD
To remove the deck buoy, follow these steps:
1. Remove the palmrest assembly.
2. Remove the display assembly.
3. Remove the diskette/CD-ROM assembly.
4. Remove screws B1, B2, and B3.
Lift the deck buoy out of the bottom case assembly.
Removing and Replacing Parts 4-33
Superpart Assembly
B4 (25 mm) thermal tape
25 mm superpart assembly bottom case assembly
Figure 4-25. Superpart Assembly Removal
Part or Assembly Name
Superpart assembly
Order Name
SVC,ASSY,FAN/SPKR,
BRKT,LXPiCD
The superpart assembly includes two speakers, two fans, the reserve battery, a printed circuit board for those parts, and an infrared printed circuit board. To remove the superpart assembly, follow these steps:
1. Remove the palmrest assembly.
2. Remove the display assembly.
3. Remove the diskette-drive/CD-ROM assembly.
4. Remove the deck-buoy.
4-34 Dell Latitude XPi CD Service Manual
5. Remove screw B4.
Lift the superpart assembly out of the bottom case assembly.
CAUTION: To prevent tearing the thermal tape, slowly pull the superpart assembly away from the system board.
Removing and Replacing Parts 4-35
Reserve Battery
superpart docking EMI clip connector JRBAT superpart serial EMI clip reserve battery superpart speaker (2) speaker/ fan bracket middle tab speaker (2)
F1 (3 mm)
F2 (3 mm)
F3 (3 mm)
Figure 4-26. Reserve Battery Removal
F4 (3 mm)
Part or Assembly Name
Reserve battery
Order Name
SVC,BTRY,RSRV,LXP
3 mm
CAUTION: The reserve battery provides power to the computer’s RTC and NVRAM when the computer is turned off. Removing the battery causes the computer to lose its date and time information as well as usersettable parameters in the NVRAM. If possible, make a copy of this information before you remove the reserve battery.
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To remove the reserve battery, follow these steps:
1. Remove the palmrest assembly.
2. Remove the superpart assembly.
3. Remove the superpart docking EMI clip and the superpart serial EMI clip.
4. Unplug the battery from connector JRBAT.
5. Place the superpart assembly upside down on a flat work surface.
6. Remove screws F1 through F4.
Remove the speaker/fan bracket protecting the speakers and fan.
CAUTION: When replacing the speaker/fan bracket, be sure to reinstall the middle tab correctly.
7. Lift the battery out of its recess in the superpart assembly.
To free the reserve battery, thread the battery cable and connector through the opening in the plastic superpart assembly.
Removing and Replacing Parts 4-37
System Board Assembly
SB1 (5 mm)
PC Card ejectors
I/O docking EMI clip system board assembly
SB2 (5 mm)
I/O serial EMI clip main battery connector battery compartment
5 mm molded tabs (3)
Figure 4-27. System Board Assembly Removal bottom case assembly
Part or Assembly Name
System board assembly
Order Name
SVC,SYS,PLN,LXPiCD-150ST,
WB,0M
CAUTION: Dell uses the system’s service tag number to maintain a history of the computer and its maintenance services. Do not neglect to transfer the service tag number to the replacement system board assembly (see step 3 of “Replacing the System Board Assembly” found later in this section).
The system board’s BIOS chip contains the system service tag number, which is also visible on a bar-code label on the bottom of the computer. The replacement kit for the system board assembly includes a diskette that provides a utility for transferring the service tag number to the replacement system board assembly.
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Removing the System Board Assembly
To remove the system board assembly, follow these steps:
1. Remove the palmrest assembly.
2. Remove the display assembly.
3. Remove the diskette/CD-ROM assembly.
4. Verify that the PC Card ejectors are fully depressed.
5. Remove the deck buoy plate. (Reinstall this part on the new system board.)
CAUTION: To ensure maximum cooling for the microprocessor, do not touch the heat transfer area on the system board above the microprocessor or on the deck buoy plate. The oils in your skin reduce the heat transfer of the thermal pads.
6. Remove the superpart assembly.
Carefully disengage the superpart docking EMI and serial EMI clips from the I/O docking EMI and serial EMI clips.
7. Remove screws SB1 and SB2, which retain the system board (see
Figure 4-27).
8. Lift the system board approximately 2 inches from the back of the computer.
9. Disengage the front of the system board from the three molded tabs in the bottom case assembly.
The tabs’ approximate location is shown in Figure 4-27. The tabs are located alongside the hard-disk drive compartment, inside the bottom case assembly.
CAUTION: When removing the system board assembly, be careful not to damage the main battery connector and EMI shield on the bottom of the assembly.
10. Lift the system board assembly out of the bottom case assembly.
NOTE: If the main battery insulator comes out with the system board assembly, detach the insulator and set it aside.
Removing and Replacing Parts 4-39
Replacing the System Board Assembly
Observe the following precautions when you reinstall a system board:
1. Before reinstalling the system board assembly, make sure the upper I/O bracket clip and the side I/O bracket clip are in place. If the side I/O bracket clip has been dislodged, reinstall it as shown in Figure 4-27.
CAUTION: To avoid possible damage to the computer, make sure the system board assembly is inserted under the three molded tabs at the front of the bottom case assembly.
I/O bracket clip
Figure 4-28. I/O Bracket Clips
2. While reinstalling the system board assembly, make sure the power button is positioned as far as it will go toward the back of the computer.
This will ensure that the power button engages the power switch properly.
3. Enter the system’s service tag number into the BIOS of the replacement system board assembly.
Insert the diskette that accompanied the replacement system board assembly into the diskette drive, and turn on the computer. Follow the instructions on the display screen.
4-40 Dell Latitude XPi CD Service Manual
3.1-V Power Supply Board
connector JPS1 system board power supply board with insulator connector JPS2 bottom case assembly
Figure 4-29. 3.1-V Power Supply Board Removal
Part or Assembly Name
3.1-V power supply board
Order Name
CRD,PWR SPLY,LXPiCD,V3.1,NBK
To remove the 3.1-V power supply board, follow these steps:
1. Remove the palmrest assembly
2. Remove the superpart assembly.
3. Remove the 3.1-V power supply board from the system board.
The power supply board is held in place on the system board by connectors
JPS1 and JPS2.
Removing and Replacing Parts 4-41
I/O-Panel Dust Cover
pivot pin (2)
I/O-panel dust cover pivot hole (2)
Figure 4-30. I/O-Panel Dust Cover Removal
Part or Assembly Name
I/O-panel dust cover
Order Name
DOOR,PLSTC,I/O,LXP/NBK
To remove the I/O-panel dust cover, follow these steps:
1. Remove the palmrest assembly.
2. Remove the display assembly.
3. Remove the superpart assembly.
4. Remove the system board.
5. Remove the I/O-panel dust cover.
Push outward on one end of the dust cover to release the pivot pin from its associated pivot hole. Then repeat the operation for the other end of the cover. After both ends have been disengaged, lift the dust cover away from the system board assembly.
To replace the I/O-panel dust cover, orient the cover in its original position and snap the pivot pins into place in their associated pivot holes. Make sure the dust cover opens and closes freely before you reinstall the display assembly.
4-42 Dell Latitude XPi CD Service Manual
Advanced Port Replicator Connector Dust Cover
Advanced Port
Replicator connector dust cover
Figure 4-31. Advanced Port Replicator Connector Dust Cover
Part or Assembly Name
Advanced Port Replicator connector dust cover
Order Name
CVR,DOOR,DOCKING,LXP
To remove the dust cover for the Advanced Port Replicator connector, follow these steps:
1. Remove the palmrest assembly.
2. Remove the display assembly.
3. Remove the dust cover.
Removing and Replacing Parts 4-43
Audio Board
hard-disk drive bracket audio board audio connectors connector board system board connector JAUDIO connector JTB
6 mm
HD1 (6 mm)
Figure 4-32. Audio Board Removal
Part or Assembly Name
Audio board
Order Name
PWA,AUDIO,LXPiCD,NBK
To remove the audio board, follow these steps:
1. Remove the palmrest assembly.
2. Remove the display assembly.
3. Remove the superpart assembly.
4. Remove the system board.
5. Remove the hard-disk drive bracket.
Turn the system board over and place it on a flat work surface. Remove screw HD1, which secures the bracket to the system board. Turn the system board over so that the bracket is on the top. Use a plastic scribe or a small flat-blade screwdriver to pry the bracket from connector JTB. Gently push the bracket outward from the system board until the bracket is disengaged from the audio connectors, and lift the bracket away from the system board.
6. Lift the audio board straight up from the system board.
The audio board is held in place on the system board by connector JAUDIO.
4-44 Dell Latitude XPi CD Service Manual
Appendix A
Factory Repair Parts
T his appendix provides procedures for removing and replacing factory components and subassemblies at a service facility. (Dell does not recommend removal and replacement of factory components and subassemblies in the field.
For removal and replacement procedures for field-replaceable parts, see Chapter 4, “Removing and Replacing Parts.”)
R
ecommended Tools
Most of the procedures in this appendix require the use of one or more of the following tools:
• Small flat-blade screwdriver
• Jeweler’s screwdriver set
• Number 1 magnetized Phillips-head screwdriver
• Number 2 magnetized Phillips-head screwdriver
• Chip-removal tool
• Wrist grounding strap
• Small plastic scribe
• Nut drivers
P
recautionary Measures
Before you begin working on the computer, read about the precautionary measures, screw identification, and computer orientation outlined at the beginning of Chapter 4, “Removing and Replacing Parts.”
F
actory Repair Parts and Assemblies
Table A-1 lists the factory repair parts and assemblies available for the computer. The subsections that follow Table A-1 provide instructions for removing and replacing these parts and assemblies.
Factory Repair Parts A-1
Table A-1. Factory Repair Parts and Assemblies
Part or Assembly Name Order Name
AC Adapter and Power Cords
Figure
AC adapter ADPT,AC,EXT,18V,65W,LXP
Power cable, U.S.
Power cable, Europe
CORD,PWR,110V,6F,AC
ADPT,US
CORD,PWR,220V,6F,AC
ADPT,EUR
Power cable, Australia
Power cable, U.K.
Audio board service kit
CORD,PWR,220V,6F,AC
ADPT,AUS
CORD,PWR,220V,6F,AC
ADPT,UK
Audio
SVC,ASSY,AUD BD/SPKR,
LXPi+
4-32
4-21
4-21
Microphone service kit
Microphone/switch assembly
Magnet switch
SVC,ASSY,MIPHN,LXPi+CD
ASSY,MIPHN/SWT,LXPi+CD
SWT,MGNT,ENCL,SPST,
LXPiCD
CBL,FPC,MIC/SW,LCD,12.1" Microphone/switch cable
Technical booklet DOC,SERV,GDE,XPi+
Batteries
Reserve battery
Battery, reserve
Technical booklet
SVC,BTRY,RSRV,LXP
BTRY,RSV,LXP
TSH,SERV,LXP
4-21
4-21
4-26
A-2 Dell Latitude XPi CD Service Manual
Table A-1. Factory Repair Parts and Assemblies (Continued)
Part or Assembly Name Order Name
Batteries (Continued)
Figure
4-2 Main battery assembly
Main battery
CUS,BTRY,SAR,36WHR,LXP
BTRY,MAIN,36WH,LXP/XPi
Technical booklet TSH,BTRY,LXP
CD-ROM Drive Assembly
CD-ROM drive assembly
CD-ROM bezel
SVC,ASSY,CD,LXPiCD
BZL,CD,PLSTC,LXPiCD
CD-ROM bezel assembly
CD-ROM bezel spring
CD-ROM drive
SUBASSY,BZLPLSTC,CD,
LXPiCD
SPR,FL,CLP,CD BZL,
LXPiCD
CD,627M,I,INT,CC,LXPiCD
CBL,FPC,CD,LXPiCD CD-ROM drive cable
Eject button BTN,EJCT,CD,LXPiCD
Screws, diskette/
CD-ROM drive bracket
SCR,M2X2MM,PHH,MS,ZPS,N
BK
Diskette Drive Assembly
4-23
Diskette drive assembly
Diskette drive
SVC,ASSY,FD,LXPiCD
FD,1.44M,F3,LXPiCD
Diskette drive cable CBL,FPC,FD,LXPiCD
Eject button BTN,EJCT,FD,LXPiCD
Technical booklet DOC,SERV,GDE,XPi+
4-23
Screws, diskette/
CD-ROM drive bracket
SCR,M2X2MM,PHH,MS,ZPS,
NBK
Factory Repair Parts A-3
Table A-1. Factory Repair Parts and Assemblies (Continued)
Part or Assembly Name Order Name
Diskette Drive Assembly (Continued)
Figure
Diskette/CD-ROM drive assembly
SUBASSY,FD/CD,LXPiCD 4-23
4-23 Diskette/CD-ROM bracket BRKT,FD,AL,RT,LXPiCD
Hard-Disk Drive Assemblies
Hard-disk drive assembly CUS,HD, xxxxx,yy,MM,zzz,
LXP *
Hard-disk drive, subassembly
SUBASSY,HD,xxxxx,yy,MM, zzz,LXP *
HD,xxxxx,yy,MM,zzz,REV2 * Hard-disk drive
Hard-disk drive bracket
BRKT,HD,LXP
4-6
Hard-disk drive mounting screws
Hard-disk drive insulator
SCR,M3X4,BIND/PHH,BL
OXIDE
INSUL,yyMM,LXP *
Technical booklet TSH,HD,LXP
Keyboards
Keyboard assembly,
Belgium
Keyboard assembly, domestic
KYBD,86,BEL,ALPS,LXPi+
Keyboard assembly, China KYBD,85,CHINA,ALPS,
LXPi+
SVC,KYBD,85,DOM,LXPi+
Keyboard assembly, Danish KYBD,86,DEN,ALPS,LXPi+
Keyboard assembly, French KYBD,86,FR,ALPS,LXPi+
* Substitute your drive capacity for xxxxx, your drive height for yy, and the
manufacturer for zzz.
4-5
4-5
4-5
4-5
4-5
A-4 Dell Latitude XPi CD Service Manual
Table A-1. Factory Repair Parts and Assemblies (Continued)
Part or Assembly Name Order Name
Keyboards (Continued)
Figure
KYBD,85,FR,CAN,ALPS,LXPi+ 4-5 Keyboard assembly,
French/Canadian
Keyboard assembly,
German
KYBD,86,GER,ALPS,LXPi+ 4-5
Keyboard assembly, Japan KYBD,87,JPN,LXPi+ 4-5
Keyboard assembly, Korean KYBD,85,KOREA,ALPS,LXPi+ 4-5
Keyboard assembly, Latin
Keyboard assembly,
Norwegian
KYBD,86,LTN,ALPS,LXPi+
KYBD,86,NOR,ALPS,LXPi+
4-5
4-5
Keyboard assembly,
Russian
KYBD,86,RUS,ALPS,LXPi+ 4-5
4-5 Keyboard assembly,
Spanish
KYBD,86,SPN,ALPS,LXPi+
Keyboard assembly,
Swedish
KYBD,86,SWE,ALPS,LXPi+
Keyboard assembly, Swiss KYBD,86,SWI,ALPS,LXPi+
Keyboard assembly,
Thailand
KYBD,85,THAI,ALPS,LXPi+
Keyboard assembly, U.K.
KYBD,84,UK,LXPi+
LCD Assemblies
LCD panel, LCD inverter board, active-matrix color,
TFT SVGA display
SVC,LCD/INVTR,TFT,
LXPi+CD
LCD panel LCD,TFT,SVGA,12.1”,
SAMSUNG
LCD inverter board ASSY,BD,INVTR,TFT,SVGA,
12.1”
Technical booklet DOC,SERV,GDE,XPi+
4-5
4-5
4-5
4-5
4-17
4-17
Factory Repair Parts A-5
Table A-1. Factory Repair Parts and Assemblies (Continued)
Part or Assembly Name Order Name
LCD Assemblies (Continued)
Figure
SVC,CBLS,LCD,TFT,SAM-
SUNG,LXPi+CD
LCD/LED/inverter board cable, service kit, activematrix color, TFT SVGA display
Display-assembly interface cable
CBL,FPC,LED/INVRTR,TFT,
12.1”
BBN,LCD,TFT,12.1”
4-20
4-20 Display-assembly interface cable bobbin, 12.1-inch
Technical booklet DOC,SERV,GDE,XPi
Bezel service kit, 12.1-inch SVC,BZL,LCD,TFT,LXPiCD
ASSY,LCD,BZL,12.1” Display assembly bezel
12.1-inch
Display-assembly latch spring
Technical booklet
SPR,LTCH
DOC,SERV,GUIDE,LXPi
4-15
4-15
4-16
SVC,CVR,BK,TFT,LXPi+ Display case service kit,
12.1-inch
Display assembly case,
12.1-inch
Technical booklet
Display assembly latch service kit, 12.1-inch
Display assembly latch,
12.1-inch
Display-assembly latch spring, 12.1-inch
Technical booklet
ASSY,LCD,CVR,BK,TFT,12.1”
DOC,SERV,GUIDE,LXPi
SVC,LTCH,DIS,TFT,LXPi+
LTCH,LCD,STN/TFT,LXP
SPR,LTCH
DOC,SERV,GUIDE,LXPi
4-17
4-16
4-16
A-6 Dell Latitude XPi CD Service Manual
Table A-1. Factory Repair Parts and Assemblies (Continued)
Part or Assembly Name Order Name
LCD Parts
Figure
4-21 Hinge cover, right
Hinge cover, left
CVR,HNG,RT,MIPHN,LXPi+
CVR,HNG,LXP
Display assembly base
Left hinge
Right hinge
Display-assembly-bezel retaining screw covers, lower
ASSY,CVR,BTM,DIS,LXPiCD
HNG,LCD,LFT,TFT,12.1"
HNG,LCD,RT,TFT,12.1"
CVR,LCD,LWR,LXPiCD
4-19
4-15
4-19
4-15
4-15 Display-assembly-bezel retaining screw covers, upper
Display-assembly EMI shield 12.1-inch
BMPR,UPR,LCD,LXPiCD
SHLD,LCD,MET,TFT,12.1”
Memory module, 4-MB, customer kit
Memory module,
4-MB
Technical booklet
Memory module, 8-MB, customer kit
Memory module,
8-MB
Technical booklet
Memory module, 16-MB, customer kit
Memory module,
16-MB
Technical booklet
Memory
CUS,MEM,4M,LXP4D/T,
LXPi
SIMM,4MB,LXP
TSH,DIMM INSTL,LXP
CUS,MEM,8M,LXP4D/T,
LXPi
DIMM,8M,2X32,TL,LXP
TSH,DIMM INSTL,LXP
CUS,MEM,16M,LXP4D/T,
LXPi
SIMM,16MB,LXP
TSH,DIMM INSTL,LXP
A-4
4-9
4-9
4-9
Factory Repair Parts A-7
Table A-1. Factory Repair Parts and Assemblies (Continued)
Part or Assembly Name Order Name
Miscellaneous Parts
Figure
CD-ROM EMI clip
Keyboard EMI clip
CLP,EMI,CD,LXPiCD
CLP,EMI,KYBD,LXPiCD
4-5
4-5
4-5 Superpart serial EMI clip
Memory compartment cover
CLP,EMI,SER,SUPERPRT,
I/O,LXPiCD
Superpart docking EMI clip CLP,EMI,DOCK,SUPERPRT,
I/O,LXPiCD
CVR,MEM,LXPiCD
PCMCIA blank
PCMCIA blank, type III
INSR,BLNK,PCMCIA,LXP
INSR,BLNK,PCMCIA,
TYP 3,LXPiCD
CVR,REAR,FOOT,LXP Tilt-support-foot retaining screw cover
Advanced Port Replicator connector dust cover
Tilt-support foot, left
CVR,DOOR,DOCKING,LXP
Tilt-support foot, right
I/O panel dust cover
Main battery insulator
FOOT,PLSTC,REAR,LF,
LXPiCD
FOOT,REAR,RT,LXP
DOOR,PLSTC,I/O,LXP/NBK
I/O bracket, hinge
Superpart assembly
CVR,MYLAR,BTRY,CVTY,
LXPiCD
GSKT,I/O BRKT,BTM,EMI,
LXPi
SVC,ASSY,FAN/SPKR,
BRKT,LXPiCD
4-5
4-7
4-5
4-5
4-12
4-31
4-5
4-5
4-30
A-10
4-33
Spreader plate
Spreader plate spacer
PLT,SPRDR,BTM,LXPiCD
SPCR,TOP SPRDR,PORON,
LXPiCD
A-12
A-12
A-8 Dell Latitude XPi CD Service Manual
Table A-1. Factory Repair Parts and Assemblies (Continued)
Part or Assembly Name Order Name
Miscellaneous Parts (Continued)
Figure
Keel plate
Deck buoy
Microphone insulator bracket
ASSY,PLT,KEEL,LXPiCD
ASSY,CLMP,THRM,LXPiCD
INSUL,PLSTC,MIPHN/
SWT,LXPiCD
A-12
4-24
4-22
A-11
A-11
Bottom case assembly
Power button
CVR,BTM,BLK,LXPi
BTN,PWR SWT,LXP
Power-button mounting bracket
GDE,PWR SWT,PLSTC,LXPi
Memory compartment cover
CVR,MEM,LXPi+CD
Palmrest Assembly
Palmrest service kit SVC,ASSY,PLMRST,
LXPi+CD
Palmrest assembly
Technical booklet
SUBASSY,PLMRST,LXPi+CD
DOC,SERV,GUIDE,LXPiCD
Screws
SVC,SCR,LXP Screws service kit
3 mm, black
3 mm, gold
4 mm, black
SCR,2mmX3mm,PHH,MS,
BLO,LXP B2
SCR,2mmX3mm,PHH,MS,
NON,LXP B8
SCR,2.6mmX4mm,PHH,MS,
BLO,LXPB7
4-5
4-9
5 mm, black
5 mm, gold
SCR,2.6mmX5mm,PHH,MS,
BLO,LXPB3
SCR,2.6mmX5mm,PHH,MS,
NON,LXP B8
Factory Repair Parts A-9
Table A-1. Factory Repair Parts and Assemblies (Continued)
Part or Assembly Name Order Name
Screws (Continued)
Figure
6 mm, black SCR,2mmX6mm,PHH,MS,
BLO,LXP B6
8 mm, gold
10 mm, gold
10 mm, black
10 mm, black
SCR,2.6mmX8mm,PHH,MS,
ZPS
SCR,2.5mmX10mm,PHH,MS,
NON,LXP5
SCR,2mmX10mm,PHH,MS,
BLO,LXP B9
SCR,M2X.4x10mm,PHH,
MS,BLO
25 mm, black SCR,2.6mmX25mm,PHH,MS,
BLO,LXP1
System Board Assemblies
SVC,SYS,PLN,
LXPiCD- P150ST,WB,0M
System board assembly,
LXPi CD, 150-MHz, service kit
System board subassembly, LXPi CD,
150-MHz
ASSY,PLN,LXPiCD-150ST,
WB,0M
BIOS access door
BIOS chip
CVR,PLSTC,BIOS,LXPiCD
IC,EEPROM,256X8,150NS,
PLCC
Audio board PWA,AUDIO,LXPiCD,NBK
Hard-disk drive bracket
BRKT,GDE,HD,LXP
PWA,HD CON,LXPiCD,NBK Connector board, harddisk drive
Power supply board
CRD,PWR SPLY,LXPiCD,
V3.1,NBK
4-27
4-32
4-32
4-32
4-29
A-10 Dell Latitude XPi CD Service Manual
Table A-1. Factory Repair Parts and Assemblies (Continued)
Part or Assembly Name Order Name
System Board Assemblies (Continued)
Figure
System board,
150-MHz
I/O interface cable
PWA,PLN,LXPiCD-150ST,
NBK
CBL,I/O TO M/B,LXPiCD A-7
Bracket, I/O BRKT,I/O,LXPi
Serial EMI clip, I/O
CLP,EMI,SER,I/O,XPiCD
Docking
EMI clip, I/O
CLP,EMI,DOCK,I/O,XPiCD
Diskette, field service
Technical booklet, service
DSK,FLD SERV,F3,US, LXP
DOC,SERV,GUIDE,LXPi
Trackball interface cable
Trackball
Optical trackball assembly SVC,ASSY,TBALL/SWT,
LXPi+CD
CBL,TBALL,LXPi+CD
Trackball subassembly
Trackball board
SUBASSY,TBALL,OPTICAL,
LXPiCD
PWA,TBALL,OPTICAL,
LXPiCD
Trackball TBALL,OPTICAL,LXPiCD
Trackball SUBASSY,TBALL,SWT BD, button board LXPiCD
Technical booklet DOC,SERV,GUIDE,LXPi
4-11
4-11
A-2
A-2
A-2
Factory Repair Parts A-11
E
xploded Views of Components and Assemblies
display assembly bezel latch
LCD panel interface cable
LCD power cable
EMI shield hinge covers (2)
LCD inverter board display assembly case display assembly hinges (2)
Figure A-1. Exploded View—Display Assembly
A-12 Dell Latitude XPi CD Service Manual
.
palmrest
A6 (4 mm) trackball button board trackball ring plastic housing
A7 (4 mm) A8 (4 mm)
A9 (4 mm) trackball palmrest brace
CD-ROM
EMI clip trackball board trackball interface cable connector J1 keyboard cables (2) keyboard
4 mm
Figure A-2. Exploded View—Palmrest Assembly
Factory Repair Parts A-13
.
superpart docking EMI clip audio board system board assembly key buoy plate bottom case assembly memory compartment cover diskette/CD-ROM assembly
Figure A-3. Exploded View—Bottom Case Assembly
I/O bracket clip superpart serial EMI clip superpart assembly
3.1-V power supply spreader plate dust cover for the Advanced
Port Replicator
I/O panel dust cover
A-14 Dell Latitude XPi CD Service Manual
H
ard-Disk Drive
The hard-disk drive resides in a carrier that mounts inside the computer’s hard-disk drive bay. Four screws secure the drive inside the carrier. A mylar insulator provides electrical insulation between the hard-disk drive and the bottom of its carrier. To remove the hard-disk drive and hard-disk drive insulator, follow these steps:
1. Remove the hard-disk drive assembly.
See “Hard-Disk Drive Assembly” in Chapter 4.
2. Place the hard-disk drive assembly right side up on the work surface, and remove the four screws that secure the drive in its carrier.
CAUTION: Rotating the hard-disk drive too far can damage the short flex cable that connects the hard-disk drive to the system board’s hard-disk drive interface connector. Do not rotate the drive farther than necessary to disconnect the cable from the back of the drive.
3. Rotate the front of the drive toward the back of the carrier far enough to expose the connector on the back of the drive.
4. Carefully pry the flex cable connector away from the hard-disk drive interface connector on the back of the drive.
5. Lift the hard-disk drive out of its carrier.
6. Remove the hard-disk drive insulator, if necessary.
With the hard-disk drive removed, lift the insulator straight up out of the carrier. The 17-mm hard-disk drives also have a foam spacer on top of the insulator (not shown).
To avoid possible damage to components on the hard-disk drive’s integrated controller board, hold the drive at approximately a 45-degree angle while reattaching the interface cable. Then rotate the drive toward the front of its carrier until it is seated in its original position.
Factory Repair Parts A-15
C
D-ROM Drive
The CD-ROM drive is attached to the CD-ROM/diskette drive bracket. See
“Diskette/CD-ROM Drive Assembly” in Chapter 4 for instructions about removing the diskette/CD-ROM assembly from the bottom case assembly. The
CD-ROM flex cable is threaded through a slot in the drive bracket. Remove the four screws that hold the CD-ROM to the drive bracket. Slide the CD-ROM flex cable out of the slot in the bracket holding the CD-ROM. The CD-ROM is replaced as a unit and is not disassembled.
D
iskette Drive
The diskette drive is attached to the CD-ROM/diskette drive bracket. See
“Diskette/CD-ROM Drive Assembly” in Chapter 4 for instructions about removing the diskette/CD-ROM assembly from the bottom case assembly.
Remove three screws to separate the diskette drive from the drive bracket. The diskette drive is replaced as a unit and is not disassembled.
P
almrest Assembly Components
To remove and replace a component of the palmrest assembly, you must first remove the assembly as described in “Palmrest Assembly” in Chapter 4. The subsections that follow provide removal procedures for the components of the trackball assembly. See Figure A-2.
Trackball
Turn the trackball board over. Rotate the retaining ring counter-clockwise. Lift the trackball out of the recess in the trackball holder.
Trackball Interface Cable
Gently disconnect the end of the cable from connector J1 on the trackball button board.
Trackball Button Board
Remove retaining screw A6 (see Figure A-2), and lift the board out of the palmrest assembly. When replacing the board, fit the two small switches on the underside of the board into the recesses in the palmrest.
Palmrest Brace
Remove screws A-7 through A-9 (see Figure A-2). Gently pull the brace toward the front, and lift the brace away from the palmrest.
A-16 Dell Latitude XPi CD Service Manual
D
isplay Assembly Components
The display assembly consists of the LCD assembly and its related components.
It also contains the LED board, which provides visual indications of many of the computer’s basic functions. The microphone assembly is mounted inside the right hinge cover of the display.
Some parts of the display assembly can be removed and replaced without removing the assembly from the computer. Others require that the display assembly be removed. The following subsections describe the removal of display assembly parts.
Display-Assembly EMI Shield
display assembly case
Figure A-4. Display-Assembly EMI Shield Removal
To remove the display-assembly EMI shield, follow these steps:
1. Remove the display assembly from the computer.
See “Display Assembly” in Chapter 4.
2. Remove the display assembly bezel.
See “Display Assembly Bezel” in Chapter 4.
3. Remove the LCD assembly.
See “LCD Assembly” in Chapter 4.
4. Remove the display-assembly interface cable.
See “Display-Assembly Interface Cable” in Chapter 4.
EMI shield
Factory Repair Parts A-17
5. Remove the LCD-inverter-board.
See “LCD-Inverter-Board Interface Cable” in Chapter 4.
6. Remove the display assembly base.
See “Display Assembly Base” later in this chapter.
7. Remove the display-assembly EMI shield.
The EMI shield is held in place by tabs along the upper and lower edges. Pulling the center of the shield slightly away from the display assembly will release the tabs.
To replace an EMI shield, carefully orient the replacement EMI shield in the same position as the original shield. Make sure that all screw holes in the shield are aligned with their corresponding screw holes in the display assembly case.
Display Assembly Base
To remove the display assembly base (see Figure 4-14), follow these steps:
1. Remove the display assembly from the computer.
See “Display Assembly” in Chapter 4.
2. Remove both hinge covers.
See “Hinge Covers” in Chapter 4.
3. Rotate the display assembly hinges so that they point away from the display assembly at approximately 180 degrees.
4. Remove the display assembly bezel.
See “Display Assembly Bezel” in Chapter 4.
5. Remove the left hinge.
See the next subsection, “Display Assembly Hinges.”
6. Rotate the right end of the display assembly base away from the display assembly until the base clears the right hinge.
7. Lift the display assembly base away from the left hinge.
8. Disengage the display-assembly interface cable from the slot in the base.
A-18 Dell Latitude XPi CD Service Manual
Display Assembly Hinges
To remove a hinge (see Figure 4-14), follow these steps:
1. Remove the display assembly from the computer.
See “Display Assembly” in Chapter 4.
2. Remove the display assembly bezel.
See “Display Assembly Bezel” in Chapter 4.
3. Remove the LCD assembly.
See “LCD Panel” in Chapter 4.
4. Remove the display-assembly interface cable.
See “Display-Assembly Interface Cable” in Chapter 4.
5. Remove the hinge covers.
See “Hinge Covers” in Chapter 4.
6. Remove the display assembly base.
See the previous subsection, “Display Assembly Base.”
7. Rotate the display assembly hinges so that they point away from the display assembly case at approximately 180 degrees.
8. To remove the hinge, remove the screw securing the hinge to the display assembly case and disengage the hinge from the display assembly case.
Factory Repair Parts A-19
S
ystem-Board Assembly Components
I/O docking EMI clip system board assembly
I/O serial
EMI clip
I/O interface cable bottom case assembly
Figure A-5. System Board Assembly in the Bottom Case Assembly
To remove a part of the system board assembly, Dell recommends that you first remove the assembly as described in “System Board Assembly” in Chapter 4.
Then follow the instructions described in the following subsections to remove parts of the system board assembly.
System Board
To remove and replace the system board, transfer the following items from the system board assembly to the replacement system board assembly:
• Any installed memory modules — See “Memory Modules” in Chapter 4.
• Keyboard/keypad/mouse connector shield — See the next subsection,
“Keyboard/Keypad/Mouse Connector Shield.”
• I/O interface cable — See “I/O Interface Cable” found later in this appendix.
• I/O board — See “I/O Board” found later in this section.
A-20 Dell Latitude XPi CD Service Manual
Keyboard/Keypad/Mouse Connector Shield
connector shield keyboard/keypad/ mouse connector
3 mm
D4 (3 mm)
Figure A-6. Keyboard/Keypad/Mouse Connector Shield Removal
Two tabs on the keyboard/keypad/mouse connector shield engage two associated slots on the I/O panel near the keyboard/keypad/mouse connector.
Retaining screw D4 attaches the bottom of the shield to the bottom of the I/O panel. To remove the shield, remove retaining screw D4, rotate the bottom of the shield toward the back of the system board assembly, and lift the shield off the I/O panel.
Factory Repair Parts A-21
I/O Interface Cable
system board connector JFLEX
I/O board
I/O interface cable connector JSTDIO
Figure A-7. I/O Interface Cable Removal
To remove the cable, follow these steps:
1. Disconnect one end of the I/O interface cable from connector JSTDIO on the system board.
Connector JSTDIO is located on the underside of the system board.
2. Disconnect the other end of the I/O interface cable from connector
JFLEX on the I/O board.
A-22 Dell Latitude XPi CD Service Manual
I/O Board
I/O board
I/O bracket clip
ST2 (8 mm)
ST4 (8 mm)
ST3 (8 mm)
ST1 (8 mm)
I/O bracket
8 mm
Figure A-8. I/O Board Removal
To remove and replace the I/O board, follow these steps:
1. Remove the I/O interface cable from connector JSTDIO.
See the previous subsection in this appendix.
2. Remove the keyboard/keypad/mouse connector shield.
See “Keyboard/Keypad/Mouse Connector Shield” found earlier in this appendix.
3. Remove the four hexagonal standoff screws ST1 through ST4 that secure the serial and parallel port connectors to the I/O panel.
Use a 3/16 nut holder to remove the standoff screws.
4. Remove the side I/O bracket clip.
See “System Board Assembly” in Chapter 4.
5. Lift the I/O board away from the I/O panel.
When replacing the I/O board, make sure that the side I/O bracket clip is positioned so that it rests directly on the I/O board, rather than between the
I/O board and I/O bracket (see Figure A-8).
Factory Repair Parts A-23
I/O Panel
I/O bracket system board
ST8 (4 mm)
ST7 (4 mm)
ST6
ST5
ST4
ST3
ST2 ST1
NOTE: ST1–ST8 are
8-mm standoff nuts
D5 (3 mm)
3 mm 4 mm
Figure A-9. I/O Panel Removal
8 mm
To remove and replace the I/O panel, follow these steps:
1. Remove the I/O board.
See the previous subsection in this appendix.
2. Remove the standoff nuts ST1 through ST8
Use a
3/16
nut driver to remove standoff nuts ST1 through ST6 and a
7/32
nut driver for ST7 and ST8.
3. Remove screw D5.
4. Remove the I/O bracket from the system board.
A-24 Dell Latitude XPi CD Service Manual
B
ottom-Case Assembly Components
power button main battery insulator spreader plate
Figure A-10. Bottom-Case Assembly Components bottom case assembly
To remove parts of the bottom case assembly, you must first remove the system board assembly as described in “System Board Assembly” in Chapter 4. The subsections that follow describe the removal and replacement of bottom-case assembly components.
Main Battery Insulator
The main battery insulator insulates the main battery from the system board assembly. To remove the main battery insulator, lift it off the main battery compartment.
NOTE: The main battery insulator sometimes comes out as part of the system board assembly. If this happens, follow the instructions in “System Board
Assembly” in Chapter 4.
Factory Repair Parts A-25
Power Button and Power-Button Mounting Bracket
power button power button mounting bracket
Figure A-11. Power Button and Power-Button Mounting Bracket
Removal
Two tabs attach the power button to the power-button mounting bracket. To remove the power button and its mounting bracket, slide the power button as far as it will go toward the back of the bottom case assembly. Use a small flat-blade screwdriver or similar device to press the two tabs out of the mounting bracket.
Lift the mounting bracket out of the bottom case assembly; then press the power button out of the hole in the side of the bottom case assembly.
A-26 Dell Latitude XPi CD Service Manual
Spreader and Keel Plates
spreader plate keel plate bottom case assembly
Figure A-12. Spreader and Keel Plate Removal
Remove the spreader plate by lifting it from the bottom case assembly. The spreader plate fits easily over plastic projections and screw holes. The keel plate is in the center of the bottom case, below the spreader plate. The keel plate fits over a small peg and a semicircular plastic projection. Remove the keel plate by lifting it out of the bottom case assembly.
Factory Repair Parts A-27
A-28 Dell Latitude XPi CD Service Manual
Appendix B
System Setup Options
Y ou may want to customize the configuration of your computer. This appendix describes how to change the system setup options stored in NVRAM on the system board.
You can access these options in two ways:
• Using the Dell Control Center
• Using the MS-DOS–based version of the system setup options, called the
System Setup program
A
ccessing the Dell Control Center
Figure B-1. Dell Control Center Icon
To access system setup options, double-click the Dell Control Center icon in the
Dell Accessories program group in Windows.
Each button in the Dell Control Center window corresponds to a particular group of system setup options. The Dell Control Center has a detailed help file that explains each setup option.
Figure B-2. Dell Control Center Window
System Setup Options B-1
A
ccessing the System Setup Program
NOTE: If the System Setup program is running when the computer enters suspend mode, the computer exits the System Setup program and then activates suspend mode.
To enter the System Setup program, hold down the <CTRL> and <ALT> keys and press the <ENTER> key, or press the <FN> and <F1> keys.
B-2 Dell Latitude XPi CD Service Manual
System Setup Screens
Page 1 of 2
Dell Computer Corporation
Dell Latitude XPi CD System Setup
BIOS Version: A XX XXX
Time: 13:17:02Date: Mon Feb 12, 1997 This category sets the time in
24-hour format (hours:min-
Internal Hard Drive: 1216 MB utes:seconds) for the internal
Diskette Drive A: 3.5 inch, 1.44 MB clock/calendar.
Boot Speed: 150 MHz
Boot Sequence:
Speaker Volume:
Keyboard Click:
Serial Port:
Diskette First
High
Disabled
COM1
To change the value in a field, enter digits or use the left- or right-arrow key to decrease or increase the value.
Infrared Data Port:
Parallel Mode:
Disabled
Bidirectional
Changes take effect immediately.
Integrated Trackball:
Upper PC Card Socket:
Lower PC Card Socket:
Monitor Toggle:
Replicator SCSI:
Replicator Network:
Enabled
Not Installed
Not installed
Enabled
Enabled
Enabled
Microprocessor:
System Memory:
Video Memory:
External Cache:
Expansion Device:
Service Tag:
Pentium-150
16 MB
1.1 MB
256 KB
Not installed
Ring Speed: 16 mbps
Asset Tag:
XXXXX
XXXXX
Tab,Shift-Tab change fields change values Alt-P next Esc exit Alt-B reboot
Page 2 of 2
Dell Computer Corporation
Dell Latitude XPi CD System Setup
Power Management:
Display Time-Out:
Disk Time-Out:
Suspend Time-Out:
S2D Time-Out:
Smart CPU Mode:
Brightness:
BATTERY
Enabled
4 minutes
1 minute
10 minutes
8 hours
Enabled
Low
AC
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
High
BIOS Version: A XX
When set to DISABLED, this category disables all power management features.
The default setting is ENABLED.
A change in this category takes
Ring/Event Resume:
Alarm Resume:
Display Close:
System Switch:
Enabled
Enabled
SUSPEND
ON/OFF
Battery Status:
IntelliSpin:
Display
High Performance
Microprocessor:
System Memory:
Video Memory:
External Cache:
Expansion Device:
Service Tag:
Asset Tag:
Pentium-150
16 MB
1.1 MB
256 KB
Not installed
XXXXX
XXXXX
Primary Password:
Admin Password:
Disabled
Disabled
Tab,Shift-Tab change fields change values Alt-P next
Esc exit Alt-B reboot
Figure B-3. System Setup Screens
System Setup Options B-3
Table B-1. System Setup Program Categories
Category
BIOS VERSION
Function
Displays the version number and release date of the BIOS in the computer.
TIME
DATE
Resets time on computer’s internal clock.
Resets date on computer’s internal calendar.
INTERNAL HARD DRIVE Displays capacity of computer’s hard-disk drive.
DISKETTE DRIVE A
BOOT SPEED
BOOT SEQUENCE
SPEAKER VOLUME
Identifies type of diskette drive installed.
Indicates operating frequency at which computer boots—processor’s rated speed or a slower speed for power conservation or speedsensitive software.
Determines whether computer boots from diskette (if present) or hard-disk drive.
Adjusts volume of computer’s speaker or disables speaker. (System beep codes are not affected by this category’s setting.)
KEYBOARD CLICK
SERIAL PORT
Determines whether built-in keyboard makes audible clicking sounds. ( SPEAKER VOLUME must also be enabled.)
Configures computer’s built-in serial port.
INFRARED DATA PORT Configures computer’s built-in IrDA 1.0compatible communications port.
PARALLEL MODE
INTEGRATED TRACKBALL
UPPER PC CARD
SOCKET or
LOWER PC CARD
SOCKET
MONITOR TOGGLE
Controls whether computer’s built-in parallel port is configured as an Enhanced Capability
Port, Enhanced Parallel Port, AT-compatible
(unidirectional) port, or PS/2-compatible
(bidirectional) port.
Enables computer’s integrated trackball. Set to
DISABLED to connect a serial mouse.
Displays status of PC Card connectors. To conserve power, category may be set to
DISABLED if a PC Card is installed but not being used.
Enables <CTRL><ALT><F8> key combination that directs where computer’s video image is sent (the built-in display, an external VGA display, or both).
B-4 Dell Latitude XPi CD Service Manual
Table B-1. System Setup Program Categories (Continued)
Category
REPLICATOR SCSI
Function
Configures computer for use with Advanced
Port Replicator. SCSI drivers will load automatically if a SCSI device is connected.
REPLICATOR NETWORK Enabling this category and installing
is_net.exe utility allow user to configure network drivers for use with Advanced Port
Replicator.
RING SPEED
MICROPROCESSOR
Configures the ring speed for the Advanced
Port Replicator.
Displays type of microprocessor installed.
SYSTEM MEMORY
VIDEO MEMORY
Displays amount of system memory.
Displays amount of video memory.
EXTERNAL CACHE
EXPANSION DEVICE
SERVICE TAG
ASSET TAG
Displays amount of external cache memory.
Shows the type of Dell Latitude Advanced
Port Replicator that is attached to the computer. There are no user-selectable settings for this option.
Displays computer’s five-character service tag number.
Displays computer’s customer-programmable asset tag. This category only appears if user has entered an asset tag number.
POWER MANAGEMENT Enables computer’s power conservation features.
BATTERY One of the categories of POWER MANAGE-
MENT . Set different time-outs for the following options when the computer operates from battery power: DISPLAY TIME-OUT , DISK TIME-
OUT , SUSPEND TIME-OUT , S2D TIME-OUT ,
SMART CPU MODE , and BRIGHTNESS .
Changing the BATTERY option takes effect immediately (rebooting is not required)
AC One of the categories of POWER MANAGE-
MENT .
Set different time-outs for the following options when operating the computer from alternating current (AC) power: DISPLAY
TIME-OUT , DISK TIME-OUT , SUSPEND TIME-
OUT , S2D TIME-OUT , SMART CPU MODE , and
BRIGHTNESS .
System Setup Options B-5
Table B-1. System Setup Program Categories (Continued)
Category
DISPLAY TIME-OUT
Function
Determines how long computer operates without detecting I/O activity before display is switched off to conserve battery power. This option should be disabled if software compatibility problems occur.
DISK TIME-OUT Determines how long hard-disk drive is idle before drive motor turns off to conserve battery power.
SUSPEND TIME-OUT Determines how long computer is idle before suspend mode is activated.
S2D TIME-OUT Determines how long computer is idle before suspend-to-disk mode is activated.
SMART CPU MODE
BRIGHTNESS
RING/EVENT RESUME
ALARM RESUME
Allows microprocessor to slow down when inactive. If software runs particular slowly, this category should be set to DISABLE .
Determines the brightness used when running from the battery.
Determines if computer exits suspend mode if an installed modem receives an incoming call.
Determines if computer resumes normal operation from suspend or standby mode if an alarm from RTC is detected.
DISPLAY CLOSE
SYSTEM SWITCH
BATTERY STATUS
Indicates whether the computer enters suspend mode when the display is closed or whether only the display is turned off when the display is closed. SUSPEND (the default) indicates the computer is in suspend mode when the display is closed. ACTIVE turns off the display, but does not put the computer into suspend mode.
Determines if power switch serves as a conventional on/off switch, or toggles computer between suspend-to-disk operation and normal operation.
Displays percentage of charge remaining in battery.
B-6 Dell Latitude XPi CD Service Manual
Table B-1. System Setup Program Categories (Continued)
Category
INTELLISPIN
Function
Compensates for unbalanced CDs that cause the computer to vibrate when the CD-ROM drive is in use. Allows use of discs that might otherwise be unreadable. Available for CD-ROM drives with speeds of 6X or higher.
HIGH PERFOR-
MANCE (the default), lets the CD-ROM drive run at the highest speed. VARIABLE automatically lowers the CD-ROM’s speed to reduce or stop the vibration.
PRIMARY PASSWORD Displays the current status of the primary password and allows you to assign or change this password.
ADMIN PASSWORD Displays current status of computer’s administrator password security feature. Also used to assign and verify a new administrator password.
System Setup Options B-7
B-8 Dell Latitude XPi CD Service Manual
Index
Numerics
3.1-V power supply board
A
Advanced Port Replicator connector dust cover removal
audio board removal
audio ports location
B beep codes
POST
boot routine observing when troubleshooting
bottom case assembly
removal
C cables display assembly interface, removal
I/O interface, removal
CD-ROM drive about
removal
computer features
illustrated
power, controlling
connectors
ZIF
D deck buoy
Dell Control Center entering
Dell diagnostics
diskette drive
diskette drive assembly removal
display assembly base, removal
bezel, removal
hinges, removal
interface cable, removal
latch spring, removal
latch, removal
removal
Index 1
E error messages, system
ESD
exploded view bottom assembly
LCD assembly
external visual inspection
G grounding strap
H hard-disk drive
hard-disk drive assembly removal
hinge covers removal
I
I/O interface cable removal
I/O panel
I/O panel dust cover removal
indicator panel
initial procedures system error messages
troubleshooting
initialization error messages
IrDA communications port location
IRQ line assignments list of
K
key combinations to enter System Setup program
keyboard assembly removal
keyboard/keypad/mouse connector shield removal
L
LCD panel removal
LEDs
M main battery removal
memory compartment cover removal
memory module
messages, system error list of
, 3-3 messages See system error messages
microphone/switch assembly removal
2 Dell Latitude XPi CD Service Manual
P palmrest assembly
removal
PC Card types supported
POST beep codes
list of
power button removal
power-button mounting bracket
precautions
R reserve battery removal
S screw identification and tightening
sockets
specifications technical
spreader plate
subsystems testing
superpart assembly
removal
system configuring
features
locations
system board assembly removal
system board components , A-20
system configuration information , B-3
system error messages about
list of
system setup options
System Setup program entering
screens
settings
T
technical specifications , 1-7
tilt-support feet removal
trackball
button board removal
troubleshooting boot routine interpretation
external visual inspection
initial user contact
U user contact initial
Index 3
V visual inspection external
Z
ZIF connectors
4 Dell Latitude XPi CD Service Manual
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