Toshiba Personal Computer Satellite M20 Maintenance

Add to my manuals
296 Pages

advertisement

Toshiba Personal Computer Satellite M20 Maintenance | Manualzz

Toshiba Personal Computer

Satellite M20

Maintenance Manual

TOSHIBA CORPORATION

S/ No.

Satellite M20 Maintenance Manual

Copyright

© 2003 by Toshiba Corporation. All rights reserved. Under the copyright laws, this manual cannot be reproduced in any form without the prior written permission of Toshiba. No patent liability is assumed with respect to the use of the information contained herein.

Toshiba Satellite M20 Maintenance Manual

First edition Jan 2003

Disclaimer

The information presented in this manual has been reviewed and validated for accuracy. The included set of instructions and descriptions are accurate for the Satellite M20 at the time of this manual's production. However, succeeding computers and manuals are subject to change without notice. Therefore, Toshiba assumes no liability for damages incurred directly or indirectly from errors, omissions, or discrepancies between any succeeding product and this manual.

Trademarks

Intel and Pentium are registered trademarks of Intel Corporation.

IBM, IBM PC/XT, PC/AT, PS/2 and OS/2 are registered trademarks of IBM Corporation.

MS-DOS and Windows are registered trademarks of Microsoft Corporation.

Sound Blaster and Pro are trademarks of Creative Technology Ltd.

UNIX is a registered trademark of X/Open Company Ltd.

NetWare are registered trademarks of Novell, Inc.

All other properties are trademarks or registered trademarks of their respective holders.

Preface

This maintenance manual describes how to perform hardware service maintenance for the

Toshiba Personal Computer Satellite M20, referred to as Satellite M20 in this manual.

The procedures described in this manual are intended to help service technicians isolate faulty Field Replaceable Units (FRUs) and replace them in the field.

SAFETY PRECAUTIONS

Four types of messages are used in this manual to bring important information to your attention. Each of these messages will be italicized and identified as shown below.

DANGER: “Danger” indicates the existence of a hazard that could result in death or serious bodily injury, if the safety instruction is not observed.

WARNING: “Warning” indicates the existence of a hazard that could result in bodily injury, if the safety instruction is not observed.

CAUTION: “Caution” indicates the existence of a hazard that could result in property damage, if the safety instruction is not observed.

NOTE: “Note” contains general information that relates to your safe maintenance service.

Improper repair of the computer may result in safety hazards. Toshiba requires service technicians and authorized dealers or service providers to ensure the following safety precautions are adhered to strictly.

Be sure to fasten screws securely with the right screwdriver. If a screw is not fully fastened, it could come loose, creating a danger of a short circuit, which could cause overheating, smoke or fire.

If you replace the battery pack, RTC battery or backup battery, be sure to use only the same model battery or an equivalent battery recommended by Toshiba. Installation of the wrong battery can cause the battery to explode.

Satellite M20 Maintenance Manual iii

The manual is divided into the following parts:

Chapter 1 Hardware Overview describes the Satellite M20 system unit and each

FRU.

Chapter 2 Troubleshooting Procedures explains how to diagnose and resolve

FRU problems.

Chapter 3 Test and Diagnostics describes how to perform test and diagnostic operations for maintenance service.

Chapter 4 Replacement Procedures describes the removal and replacement of the

FRUs.

Appendices The appendices describe the following:

Handling the LCD module

Board layout

Pin assignments

Keyboard scan/character codes

Key layout

Wiring diagrams

BIOS Rewrite Procedures

Conventions

This manual uses the following formats to describe, identify, and highlight terms and operating procedures.

Acronyms

On the first appearance and whenever necessary for clarification acronyms are enclosed in parentheses following their definition. For example:

Read Only Memory (ROM)

Keys

Keys are used in the text to describe many operations. The key top symbol as it appears on the keyboard is printed in boldface type.

Key operation

Some operations require you to simultaneously use two or more keys. We identify such operations by the key top symbols separated by a plus (+) sign. For example,

Ctrl + Pause

(Break)

means you must hold down

Ctrl

and at the same time press

Pause (Break)

. If three keys are used, hold down the first two and at the same time press the third.

User input

Text that you are instructed to type in is shown in the boldface type below:

DISKCOPY A: B:

The display

Text generated by the XXXXX that appears on its display is presented in the type face below:

Format complete

System transferred

Satellite M20 Maintenance Manual v

Table of Contents

Chapter 1 Hardware Overview

1.1 Features .................................................................................................................. 1-1

1.2 System Unit Components....................................................................................... 1-6

1.9 Batteries................................................................................................................ 1-19

Chapter 2 Troubleshooting

2.1 Outline.................................................................................................................... 2-1

2.6 Keyboard .............................................................................................................. 2-25

2.7 Display ................................................................................................................. 2-27

2.10 LAN...................................................................................................................... 2-33

Chapter 3 Diagnostic Programs

3.1 General ................................................................................................................... 3-1

3.3 Option..................................................................................................................... 3-9

3.4 Subtests................................................................................................................. 3-18

3.7 Storage.................................................................................................................. 3-34

3.8 Video .................................................................................................................... 3-39

3.10 Peripherl ............................................................................................................... 3-54

3.11 Audio.................................................................................................................... 3-58

3.12 Mode Error Codes and description....................................................................... 3-59

Satellite M20 Maintenance Manual vii

Chapter 4 Replacement Procedures

4.1 General ................................................................................................................... 4-1

4.3 CPU ...................................................................................................................... 4-21

4.4 HDD ..................................................................................................................... 4-24

4.5 Selectable Bay Module......................................................................................... 4-27

4.8 Wireless Lan Card................................................................................................ 4-37

4.9 Keyboard .............................................................................................................. 4-39

4.10 Speaker ................................................................................................................. 4-42

4.11 Bluetooth Card..................................................................................................... 4-44

4.12 Top Cover with the Display Assembly ................................................................ 4-46

Appendices

Appendix A Handling the LCD Module ........................................................................... A-1

Appendix B Board Layout ................................................................................................ B-1

Appendix C Pin Assignments............................................................................................ C-1

Appendix D Keyboard Scan/Character Codes .................................................................. D-1

Appendix E Key Layout.....................................................................................................E-1

Appendix F Wiring Diagrams............................................................................................F-1

Appendix G BIOS Rewrite Procedures ............................................................................. G-1

Appendix H EC/KBC Rewrite Procedures........................................................................ H-1

Satellite M20 Maintenance Manual ix

Chapter 1

Hardware Overview

1 Hardware Overview

1-ii Satellite M20 Maintenance Manual

1 Hardware Overview

Chapter 1 Contents

1.1 Features ...................................................................................................................... 1-1

1.2 System Unit Components .......................................................................................... 1-6

1.10 Batteries ................................................................................................................... 1-19

1.10.2 Battery Charging Control ................................................................... 1-19

Satellite M20 Maintenance Manual 1-iii

1 Hardware Overview

Figures

Figure 1-1 Front of the computer.......................................................................................... 1-5

Figure 1-2 System unit configuration ................................................................................... 1-5

Figure 1-3 System unit block diagram.................................................................................. 1-6

Figure 1-4 2.5-inch HDD.................................................................................................... 1-12

Figure 1-5 DVD-ROM drive .............................................................................................. 1-13

Figure 1-6 CD-ROM drive ................................................................................................. 1-14

Tables

Table 1-1 2.5-inch HDD specifications .............................................................................. 1-12

Table 1-2 DVD-ROM drive specifications......................................................................... 1-13

Table 1-3 CD-ROM drive specifications............................................................................ 1-14

Table 1-4 CD-R/RW drive specifications........................................................................... 1-15

Table 1-5 CD-RW/DVD-ROM drive specifications .......................................................... 1-16

Table 1-6 DVD-Multi drive specifications.......................................................................... 1-17

Table 1-7 Battery specifications ........................................................................................ 1-19

Table 1-8 Quick/normal charging time.............................................................................. 1-19

Table 1-9 RTC battery charging/data preservation time .................................................... 1-20

1-iv Satellite M20 Maintenance Manual

1.1 Features 1 Hardware Overview

1

1.1 Features

The Toshiba Satellite M20 is a lightweight notebook PC based on the Mobile Banias processor, providing high-speed processing capabilities and advanced features. The computer employs a Lithium Ion battery that allows it to be battery-operated for a longer period of time. The display uses a 14.1-inch XGA LCD panel, capable of displaying up to

16M colors at a resolution of 1024 by 768 pixels (XGA).

The (PGA socket supports BTO/CTO for the CPU so that the system can be designed to suit your needs.

The computer has the following features.

Processor

The CPU is the Mobile Banias (Pentium M).

1.3, 1.4, 1.5, or 1.6 GHz

Host bridge system controller

System controller: Intel 855 GM (MONTARA-GM) + ICH4-M

Memory

The computer has a pair of SO DIMM slots and comes standard with one 256MB module. It supports PC2100 and uses SO DIMMs (DDR SDRAM) driven at 2.5 V, accepting BTO/CTO for your memory requirements. It can incorporate up to 2 GB of main memory using the following sizes of memory modules:

• 256 MB (16M×16×8P)

• 512 MB (16M×16×16P)

• 512 MB (32M×16×8P)

• 1024 MB (64Mx16x8P)

• 1024 MB (32Mx16x16P)

Satellite M20 Maintenance Manual 1-1

1 Hardware Overview

1.1 Features

Hard disk drive (HDD)

The computer accommodates one 2.5-inch HDD with any of the following storage capacities:

• 20 GB (9.5 mm thick) ATA100

• 30 GB (9.5 mm thick) ATA100

• 40 GB (9.5 mm thick) ATA100

• 60 GB (9.5 mm thick) ATA100

• 80 GB (9.5 mm thick) ATA100

Floppy disk drive (FDD)

An external 3.5-inch FDD can be connected to a USB port.

A 3.5-inch three-mode drive is available that supports 720KB, 1.2MB, and 1.44MB formats.

Selectable bay

The Selectable Bay can accommodate a DVD-ROM drive, CD-ROM drive, CD-RW drive, CD-RW/DVD-ROM or Multi-Drive.

This bay can also be used to install a secondary HDD or secondary battery available as an option.

Display

The LCD displays available come in the following three sizes:

• 14.1” XGA-TFT color display, resolution 1024×768, 16M colors

The computer can use an external monitor along with the LCD display at the same time.

Keyboard

The keyboard has 85 keys conforming to the US key layout.

The keyboard has 86 keys confirming to the UK key layout.

The keyboard has 86 keys confirming to the Korea key layout.

Batteries

The computer has a removable Lithium Ion battery pack and an internal RTC battery.

1-2 Satellite M20 Maintenance Manual

1.1 Features 1 Hardware Overview

Universal Serial Bus (USB) ports

The computer has two USB ports to daisy-chain a maximum of 127 USB devices.

The serial data transfer rate is 480 Mbps (high speed), 12 Mbps (full speed) or 1.5

Mbps (low speed). These ports support PnP installation and hot plugging.

Parallel port

A Centronics compatible parallel port is provided to connect a printer or another parallel device. The port is IEEE-1284 compliant and supports Extended Capabilities

Port (ECP).

Serial port (RS-232C port)

A 9-pin serial interface port is provided to connect a serial device such as a serial printer, mouse, or modem.

External monitor port

A 15-pin external monitor port is provided, through which the computer automatically recognizes an external VESA DDC 2B compatible monitor.

PS/2 mouse/keyboard port

A 6-pin PS/2 mouse/keyboard port is provided to connect an IBM( PS/2 compatible keyboard or mouse. It accepts a Y splitter cable.

PC Card slot

A PC Card slot is provided to hold either two PC Card Standard Type II (5.0 mm) cards or one Type III (10.5 mm) card, capable of using a variety of PC Cards including 16-bit Multiple Function PC Cards and CardBus cards.

Toshiba Pointing Device

Toshiba Pointing Device is AccuPoint.

Fast Serial InfraRed (FIR) communications port

An IrDA 1.1 compatible FIR port is provided, enabling wireless communication at a high speed of 1.15 or 4 Mbps.

Satellite M20 Maintenance Manual 1-3

1 Hardware Overview

1.1 Features

Sound system

The AD1981B integrated audio controller supports multimedia. The sound system contains the following:

• MIDI replay feature

• Stereo speakers

• Headphone jack

• External microphone jack

LAN

The internal LAN board supports 10BASE-T and 100BASE-TX, enabling connection to a LAN at up to 100 Mbps. It also supports Wake-up On LAN. The LAN board has the RJ45 jack to directly accommodate a LAN cable.

Wireless LAN

The internal Mini PCI Card slot support both IEEE802.11.b and IEEE802.11a&b combo card. The antenna is integrated in the system unit.

Internal modem

The computer contains a MDC, enabling data and fax communication. It supports

ITU-TV.92. The transfer rates are 56 Kbps for data reception, 33.6 Kbps for data transmission, and 14,400 bps for fax transmission. Note, however, that the actual speed depends on the line quality. The RJ11 modem jack is used to accommodate a telephone line.

1-4 Satellite M20 Maintenance Manual

1.1 Features 1 Hardware Overview

Figures 1-1 and 1-2 show the front of the computer and its system unit configuration, respectively.

Cooling

Module

AC Adapter

Docking

I/F

Conn

Serial

Parallel

CPU

Figure 1-1 Front of the computer

CRT

Speaker

Left

Expansion

Memory

PC Card

Slot

Speaker

Right

Head

Phone

System Board

Ext.

MIC

LCD/FL

Inverter

Keyboard

RTC

Battery

PS/2 Mouse

/Keyboard

Selectable

Bay

LAN

Int

HDD

IR

Wireless

Lan

Figure 1-2 System unit configuration

Main

Battery

Satellite M20 Maintenance Manual 1-5

1 Hardware Overview 1.2 System Unit Block Diagram

1.2 System Unit Components

Figure 1-3 is a block diagram of the system unit.

P MAX 6501

ADM1032

(Thermal Sensor)

PC 2100 DRAM

133MHz

CPU : Intel

Mobile

Banias

1.3,1.4, 1.5, 1.6, GHz

Micro FC.PGA2

Expansion

Memory

256/512/1024

Expansion

Memory

256/512/1024

Int-HDD

30-80GB

9.5mm

2nd HDD

CD-ROM

DVD-ROM

CD-R/RW

Multi Driver

(LS 120)

(ZIP 250)

2nd BATTERY

Main CLK General.

(ICS950810)

CPUVID

LM2729

DC

MCH-M

North Bridge

855GM(Montara-GM)

AGP

HUB

Link

SM

Bus

Cont.

LAN

Cont.

82562

LVDS

CH7001

Mini

PCI Slot

802.11b or

Combo

(Wireless LAN)

NTSC/PAL

Internal PCI Bus

Cardbus Controller

Ti1520

LCD 14"

CRT

South Bridge

(ICH4-M)

EEPROM

AC97

AC

RJ45

MDC

Modem

Antena

RJ11

PCMCIA

IDE

Cont.

CODEC

AD1981B

AMP

(TPA6011A)

USB P0-P1

USB Port

USB

Cont.

(02)

PCI-PC

Bridge

USB P4

USB P5

USB

FDD

Internal LPC

Speaker

x2

Line out

Mic

Line in

HP

USB

USB

Flash

ROM

(1/2) EC/KBC

(LPC 47N253)

(2/2) Super I/O

(LPC47N253)

DR/RCV

(MAX3243)

Serial

Parallel

FIR

I2C

Stick Point K/B

KPA AC

1269A

PS/2

I2C

Main Battery

E2PROM

PS/2

PS/2

Figure 1-3 System unit block diagram

1-6 Satellite M20 Maintenance Manual

1.2 System Unit Block Diagram 1 Hardware Overview

The system unit of the computer consists of the following components:

Processor: Mobile Banias

• Mobile Banias

− Core speed: 1.3, 1.4, 1.5, 1.6 GHz

− System bus: 400 MHz

− Core operating at 1.484 V(1.4/1.5/1.6 GHz),1.388V(1.3 GHz)

− Integrated level 1 cache: 64 KB

(32KB instruction cache and 32KB data cache)

− On-die level 2 cache 1 MB

− Enhanced Intel® SpeedStep® technology

Memory

Two BTO/CTO-capable expansion memory slots are provided, coming standard with one 256MB module. They can hold 256/512MB/1024MB expansion memory modules available as options to grow up to 2 GB.

• PC2100 DDR SDRAM supported

• 256/512/1024MB modules supported

− 256 MB (16M x 16 x 8P)

− 512 MB (16M x 16 x 16P)

− 512 MB (32M x 16 x 8P)

− 1024 MB (32M x 16 x 16P)

− 1024 MB (64M x 16 x 8P)

• 2.5 volt operation

• No parity bit

• 64-bit data transfer

Satellite M20 Maintenance Manual 1-7

1 Hardware Overview 1.2 System Unit Block Diagram

BIOS ROM (flash E2PROM)

• 4Mb x 1 chip (512KB flash parts)

− 64 KB used for system BIOS

− 64 KB used for VGA

− 20 KB used for PnP

− 10 KB for PCI

− 24 KB used for Boot Block

− 20 KB used for LOGO

− 58 KB used for LAN

− 64 KB used for EC BIOS

− 11 KB used for ACPI

− 36 KB used for PM

− 13 KB used for SCU

− 3 KB used for USB

− 2 KB used for CF card

− 4 KB used for CPU

− 6 KB used for Crisis

− 113 KB reserved

System controllers

• North Bridge: Intel 855 GM (MONTARA-GM)

− CPU interface and control

− DRAM control

− PCI master/slave interface (PCI R2.2 compliant)

− Embedded video controller

• South Bridge: Intel ICH4-M

− Enhanced DMA controller

− Interrupt controller

− Counter/timer

− PCI IDE controller

− Support for ATA-66 (GB) and ATA-100 (30/40/60 GB)

− USB interface

− SMBus interface

− Super I/O interface

− Power management control

− Suspend/resume control

− ACPI support

PC Card controller

• Ti1520

1-8 Satellite M20 Maintenance Manual

1.2 System Unit Block Diagram 1 Hardware Overview

− CardBus/PC Card controller

Video controller

• North Bridge embedded

− LCD control

− External RGB output control

− NTSC/PAL output control

Video RAM

• Up to 64MB shared with main memory

Sound controller

The ICH4-M integrated audio controller supports multimedia. The sound system contains the following:

• MIDI replay feature

• Stereo speakers

• Headphone jack

• External microphone jack

• ICH4-M integrated audio controller + AD1981B

− 3D sound (surround) feature

− 16-bit, 48-KHz stereo record/replay feature

− Full-duplex (simultaneous record/replay capability)

KBC/EC (Keyboard Controller/Embedded Controller)

A single LPC 47N253 chip is used to serve as KBC/ EC.and Super IO.

• KBC

− Scan controller function

− Interface controller function

− Controlling the switching between the AccuPoint and external PS/2 mouse or between the built-in keyboard and external PS/2 keyboard or their simultaneous operation

Satellite M20 Maintenance Manual 1-9

1 Hardware Overview 1.2 System Unit Block Diagram

• EC

− Power supply sequence control

− Thermal control

− LED control

− Beep control

− Device ON/OFF

− Cooling fan speed control

− Universal I/O port

− Dock power supply control

− Battery capacity check

− Flash memory reprogramming function

− EC access interface

− I2C communication control

RS-232C driver

• MAX3243

− Conversion of signal levels for communication with an external device

Battery E

2

PROM

• 24C02 equivalent (128 words x 16 bits, I2C interface) integrated in the battery pack

− Storing records of battery use

Clock Generator

• ICS950810A

− Generating the clock signal required for the system

Modem Controller

• Built-in MDC card with XircomLucent Mars3+SiDAA

• Functions of the modem controller:

− Digital signal conductor protection

− Ring wake-up support

− Communication codes supported:

For data communication:

V.90 (56K bps) data communication control

V.32 bis (14.4K, 12K, 9600)

V.22 bis (2400, 1200)

V.23 (1200, 600, 75)

1-10 Satellite M20 Maintenance Manual

1.2 System Unit Block Diagram

LAN controller

For fax:

V.17 (14.4K, 12K, 9600, 7200)

V.29 (9600, 7200, 4800)

V.27 ter (4800, 2400)

V.21 ch2 (300)

-AC97 interface

• Intel 82562

− Wake-up On LAN support

− Remote boot support

− 100BASE-TX support

Wireless LAN controller

• Support following 4 kind of miniPCI wireless LAN cards.

− IEEE802.11b (Agere)

− IEEE802.11b (Intel)

− IEEE802.11b (Cisco)

− IEEE802.11a&IEEE802.11b (Atheros)

• Transfer Rate

− IEEE802.11b : max11Mbits/s

− IEEE802.11a : max54Mbits/s

• Frequency Channel

− IEEE802.11b : 2.4GHz

− IEEE802.11a : 5.0GHz

Super I/O

• LPC 47N253

− Serial port control

− Parallel port control

− Infrared communications control

1 Hardware Overview

Satellite M20 Maintenance Manual 1-11

1 Hardware Overview 1.3 2.5-inch HDD

The computer contains an extremely low-profile and lightweight, high-performance HDD.

The HDD incorporates a 2.5-inch magnetic disk and mini-Winchester type magnetic heads.

Storage capacities supported are 20,30, 40, 60 and 80 GB.

The HDD interface is Enhanced IDE, ATA66 (for GB), or ATA100 (for 20/30/40/60/80 GB).

The HDD is shown in Figure 1-4 and its specifications are listed in Table 1-1.

Figure 1-4 2.5-inch HDD

Table 1-1 2.5-inch HDD specifications

Item

Formatted capacity (GB)

User data sectors

Specifications

Toshiba Hitachi Toshiba Toshiba Hitachi Hitachi Toshiba

MK6021

GAS

DK23EB-

60

MK6022

GAX

MK3021

GAS

DK23EB-

40

DK23EA-

30

MK4019

GAX

60.0116GB 60.0116GB 60.0116GB 30.0058GB 40.0007GB 30.0058GB 40.0007GB

117,210,24

0

117,210,24

0

117,210,24

0

58,605,120 78,140,160 58,605,120 78,140,160

Rotational speed

(RPM)

4200rpm 5400rpm 5400rpm 4200rpm 5400rpm 4200rpm 5400rpm

1-12 Satellite M20 Maintenance Manual

1.4 DVD-ROM Drive 1 Hardware Overview

The DVD-ROM drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs. The drive provides high-speed data transfer, playing back a DVD at up to 8x speed and reading up to

10,820 Kbytes per second from DVD-ROM and 3,600 Kbytes per second from CD-ROM.

The DVD-ROM drive is shown in Figure 1-5 and its specifications are listed in Table 1-2.

Figure 1-5 DVD-ROM drive

Table 1-2 DVD-ROM drive specifications

Item

Data transfer rate (Mbytes/s)

Access time (ms)

Average random access (ms)

Average full stroke access (ms)

Rotational speed (RPM)

Data buffer size (Kbytes)

Formats supported

DVD-ROM mode

33.3 (U-DMA transfer mode 2)

110 (Typ.)

200 (Typ.)

CD-ROM mode

85 (Typ.)

180 (Typ.)

4,670 Max

256

5,100Max

DVD-ROM, DVD-R (Read)

CD-DA, CD+(E)G, CD-MIDI, CD-TEXT

CD-ROM, CD-ROM XA, CD-I

CD-I Bridge (Photo-CD, Video-CD)

Multisession CD (Photo-CD, CD-EXTRA, CD-R,

CD-RW)

CD-R (Read), CD-RW (Read)

Satellite M20 Maintenance Manual 1-13

1 Hardware Overview 1.5 DVD-ROM Drive

The CD-ROM drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs. The drive provides high-speed data transfer at up to 24x.

The CD-ROM drive is shown in Figure 1-6 and its specifications are listed in Table 1-3.

Figure 1-6 CD-ROM drive

Table 1-3 CD-ROM drive specifications

Item

Data transfer rate (Mbytes/s)

Access time (ms)

Average random access

Average full stroke access

Rotational speed (RPM)

Data buffer size (Kbytes)

Formats supported

24

× mode (Max.)

33.3 (U-DMA transfer mode 2)

110 (Typ.)

240 (Typ.)

5,136

128

CD-DA, CD-ROM, CD-R, CD-ROM XA, CD-I

FMV, Photo CD (Multisession) , VIDEO CD,

CD Extra (CD Plus), CD-G, CD-RW

1-14 Satellite M20 Maintenance Manual

1.6 CD-R/RW Drive 1 Hardware Overview

The CD-R/RW drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs.

The specifications of the CD-R/RW drive are listed in Table 1-4.

Table 1-4 CD-R/RW drive specifications

Item Specifications

Data transfer rate (Mbytes/s) 16.6 (U-DMA transfer mode 2)

Access time (ms) 110 (max 24, Typ.)

Speed Read:

CD-ROM, CD-R (max 24)

Write:

Cache (Mbytes)

Formats supported

2

Video CD, Photo CD, CD-ROM, CD-ROM XA,

CD-EXTRA, CD-R, CD-Rewritable, CD-DA, CD-Text

Satellite M20 Maintenance Manual 1-15

1 Hardware Overview 1.7 CD-RW/DVD-ROM Drive

The CD-RW/DVD-ROM drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs. At maximum, the drive can play back a DVD at 8x speed, read CD-ROM at 24x speed, and write CD-R at 24x speed and CD-RW at 10x speed.

The specifications of the CD-RW/DVD-ROM drive are listed in Table 1-5.

Table 1-5 CD-RW/DVD-ROM drive specifications

Item

Data transfer rate (Mbytes/s)

Access time (ms)

Average random access

Average full stroke access

Rotational speed (RPM)

Data buffer size (Mbytes)

Formats supported

DVD-ROM mode CD-ROM mode

DVD:

DVD-ROM (DVD-5, DVD-9, DVD-10,

DVD-18), DVD-R (read)

CD:

CD-DA, CD+(E)G, CD-MIDI, CD-TEXT,

CD-ROM, CD-ROM XA, MIXED MODE

CD, CD-I, CD-I Bridge (Photo-CD,

Video-CD), Multisession CD (Photo-CD,

CD-EXTRA, Portfolio, CD-R, CD-RW),

CD-R, CD-RW

CD-R/CD-RW

(Write mode)

33.3 (U-DMA transfer mode 2)

16.7 (PIO mode 4, Multiword DMA mode 2)

110

250

90

200

4,594 Max

2

5,136 Max

-

-

2,297 Max

CD-DA, CD+(E)G,

CD-MIDI, CD-

TEXT, CD-ROM,

CD-ROM XA,

MIXED MODE CD,

CD-I, CD-I Bridge

(Photo-CD, Video-

CD), Multisession

CD (Photo-CD,

CD-EXTRA,

Portfolio)

1-16 Satellite M20 Maintenance Manual

1.8 DVD-Multi Drive 1 Hardware Overview

The DVD-Multi drive accepts 12-cm (4.72-inch) and 8-cm (3.15-inch) discs.

The specifications of the DVD-Multi drive are listed in Table 1-6.

Table 1-6 DVD-Multi drive specifications

Data transfer rate (Mbytes/s)

Average seek time

Data buffer size (Mbytes)

Formats supported

PIO Mode 4(16.6MB/sec)

Ultra DMA Mode 2(33.3MB/sec)

DVD-ROM: 170ms

CD-ROM: 130ms

DVD-S: 130ms

DVD-R/DVD-RW: 150ms

2MB

DVD-RAM, DVD-R, DVD-RW, DVD-ROM, DVD-Video, CD-R,

CD-RW, CD-DA, CD-ROM/XA, CD-ROM, Video-CD, CD-I,

Photo CD, CD-Extra, CD-TEXT

Satellite M20 Maintenance Manual 1-17

1 Hardware Overview 1.9 Power Supply

The power supply unit provides many different voltages for the system board and performs the following functions:

1. Power input monitor

• Checks whether the DC power supply (AC adapter) is connected to the computer.

• Checks whether the battery pack is connected to the computer.

• Monitors the DC power supply input voltage (AC Adapter output voltage).

2. Power supply's internal control

• Turns on and off the battery pack charging power supply.

• Issues a charging current instruction to the PWM control IC of the battery pack charging power supply.

• Controls the supply of DC power supply input (AC Adapter output) to the power supply unit.

• Controls the supply of power to the system block (load/logic circuit side).

• Controls forced shutdown if the power supply malfunctions.

3. Logic circuit control

• Instructs the gate array to enable/disable tuning the power on.

• Controls power-on/off operation.

4. Status display

• Turns on the DC IN LED (in orange or green).

• Battery indicator (in orange or green)

5. External interface

• Performs communication through the I2C bus (via the internal EC/KBC).

• Transfers the power supply operation mode.

6. Output monitor

• Monitors the voltage output to the system block (load/logic circuit side).

• Monitors the voltage, overvoltage, input/output current of the battery pack.

• Monitors the internal temperature of the battery pack.

• Monitors the supply voltage from the AC adapter.

1-18 Satellite M20 Maintenance Manual

1.10 Batteries 1 Hardware Overview

1.10 Batteries

The computer has the following three types of batteries:

Main battery pack

Real time clock (RTC) battery

Secondary battery pack (Optionally installed in the selectable bay)

Table 1-6 lists the specifications of these batteries.

Table 1-7 Battery specifications

Battery name

Main battery pack (6 cells)

RTC battery

Secondary battery pack (6 cells)

Material

Lithium Ion

Lithium Ion

Lithium Ion

Output voltage

10.8 V

Capacity

4,300 mAh

3.0 V

10.8V

17 mAh

3,600 mAh

The main battery pack serves as the computer's main power source when the AC adapter is not attached. The main battery maintains the state of the computer so that it can resume it.

1.10.2 Battery Charging Control

Battery charging is controlled by LPC 47N253. When the AC adapter and battery pack are attached to the computer, the LPC 47N253 controls the charge on/off state and detects a full charge.

Battery Charge

When the AC adapter is attached, the battery is charged by off-state charge when the system is powered off or by on-state charge when it is powered on.

Table 1-8 Quick/normal charging time

Off-state charge About 3 hours

On-state charge About 5 hours

Satellite M20 Maintenance Manual 1-19

1 Hardware Overview 1.10 Batteries

NOTE: The time required for normal charge depends on the power consumption by the system. Using the fluorescent lamp and frequently accessing the disk consume much power and lengthen the charge time.

Any of the following cases stops battery charge:

1. The battery becomes fully charged.

2. The AC adapter or battery pack is removed.

3. The battery or AC adapter voltage is abnormal.

Detection of full charge

A full charge is detected only when the battery is being charged by quick or normal charge. A full charge is detected when either of the following conditions is met:

1. The current in the battery charging circuit drops below the predetermined value.

2. The charging time exceeds the fixed limit.

The RTC battery provides power to keep the current date, time and other system information in memory while the computer is turned off. Table 1-8 lists the charging time and data preservation period of the RTC battery.

Charging time

Table 1-9 RTC battery charging/data preservation time

Status Time

AC Adapter or main battery pack used

(power on)

About 8 hours

1-20 Satellite M20 Maintenance Manual

2

Chapter 2

Troubleshooting

2 Troubleshooting

2-i

Satellite M20 Maintenance Manual

2 Troubleshooting

Chapter 2 Contents

2.1 Outline........................................................................................................................ 2-1

Procedure 1 Power Icon Check........................................................................... 2-6

Procedure 2 Connection Check........................................................................... 2-8

Procedure 3 Replacement Check ........................................................................ 2-9

Procedure 1 Message Check ........................................................................... 2-11

Procedure 2 Printer Port LED Check (in Boot Mode).................................... 2-12

Procedure 3 Printer Port LED Check (in Resume Mode)............................... 2-17

Procedure 4 Test Program Check ................................................................... 2-18

Procedure 5 Replacement Check ..................................................................... 2-18

Procedure 1 Message Check ............................................................................. 2-19

Procedure 2 Partition Check .......................................................................... 2-19

Procedure 3 Format Check.............................................................................. 2-20

Procedure 4 Test Program Check ................................................................... 2-21

Procedure 5 Connector Check and Replacement Check................................. 2-22

2.6 Keyboard.................................................................................................................. 2-23

Procedure 1 External Keyboard Check........................................................... 2-23

Procedure 2 Test Program Check ................................................................... 2-23

Procedure 3 Connector Check and Replacement Check................................. 2-23

2.7 Display ..................................................................................................................... 2-25

Procedure 1 External Monitor Check ............................................................. 2-25

Procedure 2 Test Program Check ................................................................... 2-25

Procedure 3 Connector Check and Replacement Check................................. 2-25

Procedure 1 DVD-ROM Cleaning Check....................................................... 2-27

Procedure 2 Test Program Check ................................................................... 2-27

Procedure 3 Connector Check and Replacement Check................................. 2-27

2-ii

Satellite M20 Maintenance Manual

2 Troubleshooting

Procedure 1 CD-ROM Cleaning Check.......................................................... 2-29

Procedure 2 Test Program Check ................................................................... 2-29

Procedure 3 Connector Check and Replacement Check................................. 2-29

2.10 LAN ......................................................................................................................... 2-31

Procedure 1 Test Program Check ................................................................... 2-31

Procedure 2 Connector Check and Replacement Check................................. 2-31

Procedure 1 Test Program Check ................................................................... 2-32

Procedure 2 Connector Check and Replacement Check................................. 2-32

Satellite M20 Maintenance Manual

2-iii

2 Troubleshooting

Figures

Figure 2-1 Basic flowchart .............................................................................................. 2-3

Figure 2-2 Printer port LED ......................................................................................... 2-12

Figure 2-3 Printer port LED board ............................................................................... 2-12

Tables

Table 2-1 Printer port LED boot mode status (1/3)...................................................... 2-14

Table 2-2 Printer port LED resume mode status (1/7) ................................................. 2-17

Table 2-3 HDD error code and status........................................................................... 2-21

2-iv

Satellite M20 Maintenance Manual

2.1 Outline 2 Troubleshooting

2.1 Outline

This chapter describes the fault diagnosis procedures for field replaceable units (FRUs) in the computer.

The FRUs covered here are as follows:

1. System board

4. Display

7. Cooling module

2. 2.5-inch HDD

5. DVD-ROM drive

8. Lan

3. Keyboard

6. CD-ROM

See Chapter 4 for the procedures to replace FRUs and Chapter 3 for the procedures to use test programs

The following tools are required to perform the diagnostic procedures:

1. Diagnostics (maintenance test program) disk

2. Phillips screwdrivers (2 mm, 2.5 mm)

3. Cleaning disk kit (for CD-ROM/ DVD-ROM drive cleaning)

4. Bootable CD

5. Printer port LED (i.e LPT Port LED)

6. Printer port (parallel port) loopback connector (i.e. LPT Port)

7. Serial port loopback connector (i.e. COM Port)

8. PC Card loopback connector

9. Multimeter

10. External monitor

11. External PS/2 keyboard

12. External PS/2 mouse

13. Multimedia sound system with line-in and line-out ports

14. Headphone

15. Microphone

16. External FDD attachment

17. A-BEX TEST CD-ROM TCDR-702

18. Music CD

19. DVD-ROM TSD-1 (TOSHIBA EMI DVD Test Media)

Satellite M20 Maintenance Manual

2-1

2 Troubleshooting 2.2 Basic Flowchat

The basic flowchart in Figure 2-1 serves as a guide for identifying a possibly faulty FRU.

Before going through the diagnostic flowchart steps, verify the following:

Make sure the Toshiba version of Windows® XP has been installed on the HDD.

Any other operating system can cause the computer to malfunction.

Make sure any piece of optional equipment has been installed.

2-2

Satellite M20 Maintenance Manual

2.2 Basic Flowchat

Start

2 Troubleshooting

Connect the AC Adapter

DC IN LED on ??

Yes

BATTERY LED on ??

Yes

Turn the power on.

No

No

Follow the power supply diagnostic

Procedure in Section 2.3

Follow the power supply diagnostic

Procedure in Section 2.3

Any error message displayed ??

No

Message "In Touch with

Tomorrow Toshiba" displayed

Yes

"Password=" displayed ??

Yes

No

Follow the system board diagnostic

Procedure in Section 2.4

Follow the display diagnostic

Procedure in Section 2.8

Yes

See the previous page to delete the password.

No

OS started ??

1

Yes

No

Follow the HDD diagnostic

Procedure in Section 2.6

Figure 2-1 Basic flowchart (1/2)

Satellite M20 Maintenance Manual

2-3

2 Troubleshooting 2.2 Basic Flowchat

1

Keyboard works well ??

Insert Bootable CD into CD-ROM

No

Follow the keyboard diagnostic

Procedure in Section 2.7

Diagnostic Program

Loaded ??

Yes

Perform each test with the diagnostic program.

No

Follow the CD-ROM diagnostic

Procedure in Section 2.10

Any error detected by the diagnostic program ??

No

Perform the continuous test to check if the error is intermittent.

Yes

Identify the test resulting in the error and perform the appropriate diagnostic procedures

Yes

Any error detected by the diagnostic program ??

No

The system is normal.

END

Figure 2-1 Basic flowchart (2/2)

Identify the test resulting in the error and perform the appropriate diagnostic procedures

2-4

Satellite M20 Maintenance Manual

2.2 Basic Flowchat 2 Troubleshooting

If the diagnostic program cannot detect an error, the error may be intermittent. Run the continuous test program repeatedly to isolate the problem. Check the log utilities function to confirm which diagnostic test detected the error, then perform the appropriate troubleshooting procedures as follows:

1. If an error is detected by the System test, Memory test, Async test, Printer test,

Sound test, or Real Timer test, follow the system board troubleshooting procedures in

Section 2.4.

2. If an error is detected by the Hard Disk test, follow the HDD troubleshooting procedures in Section 2.6.

3. If an error is detected by the Keyboard test, follow the keyboard troubleshooting procedures in Section 2.6.

4. If an error is detected by the Display test, follow the display troubleshooting procedures in Section 2.8.

5. If an error is detected by the DVD-ROM test, follow the DVD-ROM troubleshooting procedures in Section 2.9.

6. If an error is detected by the CD-ROM test, follow the CD-ROM troubleshooting procedures in Section 2.10.

7. If an error is detected by the LAN test, follow the LAN troubleshooting procedures in section 2.12.

8. If an error is detected by the Fan On/Off test, follow the cooling module troubleshooting procedures in Section 2.13.

Satellite M20 Maintenance Manual

2-5

2 Troubleshooting 2.3 Power Supply

The power supply in the computer controls many functions and components. To check if the power supply is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 Power Icon Check

Procedure 2 Connection Check

Procedure 3 Replacement Check

Procedure 1 Power Icon Check

The following two power LEDs indicate the power supply status:

Battery LED

DC IN LED

The power supply controller displays the power supply status through the Battery and DC IN

LEDs as in the tables below.

Battery LED

Battery LED

On in orange

On in green

Blinking in orange

(at equal intervals)

Battery being charged

Power supply status

Battery fully charged, with AC adapter connected

Battery low *1 while driving the computer

Off Else

2-6

Satellite M20 Maintenance Manual

2.3 Power Supply 2 Troubleshooting

DC IN LED

DC IN LED Power supply status

On in green DC power being supplied (from the AC adapter)

Off Else

If the DC IN LED off, follow the steps below:

1. Remove the battery pack and the AC adapter to shut off power supply to the computer.

2. Attach the battery and AC adapter back again.

If the LED still off, follow the steps below:

Check 1

Check 2

Make sure the DC IN LED goes on in green. If it does not, go to Procedure 2.

Make sure the Battery LED goes on in orange or green. If it does not, go to

Procedure 3.

Satellite M20 Maintenance Manual

2-7

2 Troubleshooting 2.3 Power Supply

Procedure 2 Connection Check

Power is supplied to the system board as illustrated below:

AC adaptor

System board

AC power cord

AC adaptor cord

Battery pack

Follow the steps below to check whether each connector has been connected correctly:

Check 1 Make sure the AC adaptor and AC power cord have been firmly plugged into

Check 2

Check 3 the DC IN 15V socket and wall outlet, respectively. When they have been connected correctly, perform Check 2.

Connect a new AC adaptor and AC power cord.

• If the DC IN LED does not go on, go to Procedure 3.

• If the battery LED does not go on, perform Check 3.

Make sure the battery pack has been correctly installed in the computer. If the battery LED does not go on while the battery pack has been installed correctly, go to Procedure 3.

2-8

Satellite M20 Maintenance Manual

2.3 Power Supply 2 Troubleshooting

Procedure 3 Replacement Check

The system board, power supply board, or CPU may be faulty. Disassemble the computer according to Chapter 4 and follow the steps below:

Check 1 Replace the power supply board with a new one. If the battery pack is still not working properly, perform Check 2.

Check 2 Replace the system board with a new one. If the battery pack is still not working properly, perform Check 3.

Check 3 Replace the CPU with a new one.

Satellite M20 Maintenance Manual

2-9

2 Troubleshooting 2.4 System Board

To check if the system board is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 Message Check

Procedure 2 Printer Port LED Check (in Boot Mode)

Procedure 3 Printer Port LED Check (in Resume Mode)

Procedure 4 Test Program Check

Procedure 5 Replacement Check

2-10

Satellite M20 Maintenance Manual

2.4 System Board 2 Troubleshooting

Procedure 1 Message Check

When the power is turned on, the system performs the self-diagnostic Power On Self Test

(POST) embedded in the BIOS ROM. The POST tests and initializes each IC on the system board.

If an error message appears on the display, perform Check 1.

If there is no error message, go to Procedure 2.

If there is no error beep code tone out, go to Procedure 4

If Toshiba MS-DOS or Toshiba Windows 2000/XP is loaded normally, go to

Procedure 5.

Check 1 If the following error message is displayed on the screen, press the

F1

key as prompted. These errors occur when the system configuration preserved in the

RTC memory (generally called CMOS memory) does not match the actual configuration or when the data is lost.

If you press the

F1

key as prompted by the message, the TSETUP screen appears to set the system configuration. If the error message appears frequently when the power is turned on, replace the RTC battery. If any other error message is displayed, perform Check 2.

*** Bad RTC battery ***

Check system. Then press [F1] key

Check 2 If the following error message is displayed on the screen, press any key as prompted by the message.

The error message appears when either data stored in RAM to be resumed is lost because the battery has been exhausted or the system board is faulty.

If any other error message displays, perform Check 3

RESUME FAILURE and PRESS ANY KEY TO CONTINUE.

Check 3 The POST checks the system board. When the POST detects an error, the system stops or a error beep code tone out or an error POST message appears.

Satellite M20 Maintenance Manual

2-11

2 Troubleshooting 2.4 System Board

Procedure 2 Printer Port LED Check (in Boot Mode)

The printer port LED displays the POST status and error status by turning lights on and off as an eight-digit binary value obtained in the boot mode after the system unit is switched on.

Figure 2-2 shows the printer port LED.

Figure 2-2 Printer port LED

Figure 2-3 illustrates how the printer port LED shows a status value.

Printer port LED status = 35H

2-12

Figure 2-3 Printer port LED board

Satellite M20 Maintenance Manual

2.4 System Board 2 Troubleshooting

Follow the steps below to use the printer port LED:

1. Turn on the computer and set the boot mode.

2. Turn off the computer.

3. Plug the printer port LED into the computer's parallel port (printer port).

4. Read the LED status from left to right as you are facing the back of the computer.

5. Convert the LED status from binary to hexadecimal notation.

6. If the final LED status is FFh (normal status), go to Procedure 5.

7. If the final LED status matches any other status in Table 2-1, go to Procedure 6.

NOTE: The printer port LED displays each status upon completion of the corresponding

POST test item. If the POST terminates with 21h displayed on the printer port LED, for example, the POST has completed KBC initialization and detected an error

Satellite M20 Maintenance Manual

2-13

2 Troubleshooting 2.4 System Board

Table 2-1 Printer port LED boot mode status (1/3)

LED Status

(Hexadecimal)

0H

Test Item

DIAG_SYSTEM_INIT

Description

1H

2H

3H

4H

5H

6H

7H

8H

9H

AH

FH

CCH

99H

DIAG_A20_DISABLE

DIAG_INIT_CHIPSET

DIAG_TEST_RAM

DIAG_MOVE_BB_LOADER

DIAG_EXECUTE_IN_DRAM

DIAG_USER_FLASH_CHECK

DIAG_SHADOW_BIOS

DIAG_CHECKSUM_BIOS

DIAG_NORMAL_BOOT

DIAG_CRISIS_BOOT

DIAG_FATAL_ERROR

DIAG_CRISIS_BEGIN

DIAG_RESUME_RAM_ERROR

Boot started,read the cmos data for makesure main board power is stable

Disable A20 through A20

Initialize ChipsetSet,load chipset default size chache RAM send patten for test the basic 640k RAM

Move boot load segment into the RAM program execution from DRAM

Test print port for check crisis option is enable or not

Decompress the system BIOS, and

Shadow System BIOS to RAM

Checksum System BIOS ROM

Jump to the reset point

Proceed with Crisis Boot,first initial superio and boot device

Fatal Error,like the RAM error or ROM error

Start process the Crisis recovery procedure

Resume SMRAM not Found

2-14

10H

11H

12H

13H

14H

15H

16H

17H

18H

19H

1AH

1BH

1CH

1DH

1EH

1FH

DEBUG_MISC_RESET

DEBUG_CS_FAST_A20_RESET

DEBUG_POST_SIGNAL_POR

Disable internal cache ram,and reset cpu

Turn off FASTA20 for post,and check have keyboard controllor

Initial PIC enable INT and Signal Power On Reset

DEBUG_CS_CHIP_INIT Initialize the Chipset and hook PCI BIOS

DEBUG_OEM_ISA_VGA_SEARCH Search For ISA Bus VGA Adapter, from address c000 to e000

DEBUG_HWIO_SETUP_CTC1 Initialize Counter and Timer chip

DEBUG_OEM_SET_CMOS_REGS

DEBUG_CS_MEMORY_SIZE

DEBUG_POST_TEST_RAM

DEBUG_GEN_TEST_ROMS

User register config through CMOS

Size Memory, and detect memory timing, setup memory controllor

Initialize and test the first 64k memory checksum the system ROM

DEBUG_HWIO_RESET_INTS

DEBUG_VIDEO_VIDEO_INIT

DEBUG_VIDEO_EQUIP_INIT

DEBUG_VIDEO_COLOR_INIT

Reset PIC's status

Initialize Video Adapter(s),and check vga rom and vga ram

Initialize Video (6845 Regs),set display mode

Initialize Color Adapter,and setup display reg.

DEBUG_VIDEO_BW_INIT Initialize Monochrome Adapter,and setup display reg.

DEBUG_HWIO_TEST_DMA_PAG Send out some value,to test 8237A Page Registers

Satellite M20 Maintenance Manual

2.4 System Board 2 Troubleshooting

Table 2-2 Printer port LED boot mode status (2/3)

LED Status

(Hexadecimal)

20H

21H

22H

23H

24H

25H

26H

27H

2CH

2DH

2EH

2FH

28H

29H

2AH

2BH

Test Item

Description

DEBUG_KEYB_SELFTEST_CTLR Send selftest command (AAH) to test Keyboard controllor if o.k. return (55h)

DEBUG_KEYB_RESET_KEYBOARD Test Keyboard Controller and initialize keyboard controllor

DEBUG_POST_CHECK_CMOS_RAM Send test petten to Check CMOS Ram

DEBUG_POST_TEST_BATT_CMOS_STest Battery Fail & check CMOS X-SUM

DEBUG_HWIO_TEST_DMA_CTLRS Use DMA to copy data for Test the DMA controllers

DEBUG_HWIO_INIT_8237 Initialize 8237A Controller

DEBUG_POST_INIT_VECS Install and Iniitialize interrupt Vectors

DEBUG_RAM_QUICK_SIZE

DEBUG_RAM_PROT_ENTRY_1

DEBUG_RAM_SIZE_DONE

Enter memory protect mode,use change RAM bank to do RAM Quick Sizing

Memory protected mode entered safely

Test the basic 640k ram,RAM test completed

DEBUG_RAM_PROT_EXIT Protected mode exit successful

DEBUG_CS_SHADOW_SETUP Shadow system and video BIOS to RAM if CMOS requests shadowSetup Shadow

DEBUG_VIDEO_EQUIP_INIT_INIT Going To Initialize 6845 CRT controllor

DEBUG_VIDEO_BW_SEARCH Search For Monochrome Adapter

DEBUG_VIDEO_COLOR_SEARCH Search For Color Adapter

DEBUG_VIDEO_SIGNON Signon messages displayed

34H

35H

36H

37H

38H

30H

31H

32H

33H

DEBUG_OEM_CONFIG_KBD_CTL For special initialize of keyboard controllor

DEBUG_KEYB_PRESENT_TEST

DEBUG_KEYB_TEST_IRQ1

DEBUG_KEYB_TEST_CMD

DEBUG_RAM_FULL_TEST

DEBUG_RAM_PROT_ENTRY_2

DEBUG_RAM_TEST_DONE

Test the keyboard controllor ,If Keyboard

Present

Clear keyboard buffer and sen keyboard command to test Keyboard Interrupt

Send keyboard command to turn off keyboard LED and Test some Keyboard Command Byte

TEST memory procedure, for test,blank and count all RAM

Eneter the memory protected mode for test all expand memory

Test and blank all memory complete

DEBUG_RAM_PROT_EXIT_2 Switch the memory from Protected mode to real mode

DEBUG_KEYB_OUTPUT_PORT Disable A20 status for memory test finish

39H

3AH

3BH

3CH

3DH

3EH

3FH

DEBUG_CS_CACHE_SETUP Setup Cache Controller

DEBUG_HWIO_TEST_PERIODIC Check and test the timer 0 interrupt function is Working

DEBUG_GEN_CHECK_RTC test for RTC ticking

DEBUG_GEN_INIT_HARD_VECS Install and initialize the hardware vectors

DEBUG_MOUSE_INIT

DEBUG_KEYB_SET_LEDS_1

DEBUG_OEM_DEVICE_CONFIG

Clear keyboard buffer for search and Init the Mouse

Send keyboard command to Update keyboard NUMLOCK status special init of COMM and LPT ports

Satellite M20 Maintenance Manual

2-15

2 Troubleshooting 2.4 System Board

Table 2-2 Printer port LED boot mode status (3/3)

LED Status

(Hexadecimal)

40H

41H

42H

43H

44H

45H

46H

47H

48H

49H

50H

51H

52H

Test Item

Description

DEBUG_CS_CONFIG_PORTS Configure the COMM and LPT ports

DEBUG_FLOP_INIT According cmos data to initialize the floppies

DEBUG_WINI_INIT

DEBUG_HWIO_ROM_INIT

Scan and initialize the hard disk, and display the result on crt

Search option rom from c800 to e000 and to Initialize option ROMs

DEBUG_OEM_INIT_POWER_MAN Check special device initial power management function

DEBUG_KEYB_SET_LEDS_2 Clear keyboard buffer and Update NUMLOCK status

DEBUG_HWIO_FIND_80X87 Test For Coprocessor Installed,and enable coprocessor interrupt

DEBUG_OEM_LAST_MINUTE_INIT Run OEM functions before boot, and enable

DEBUG_MISC_LAUNCH_INT19

DEBUG_BEGIN_BOOT_CODE

DEBUG_ACPI_INIT

DEBUG_PM_CPU_INIT

DEBUG_USB_HC_INIT

L1,L2 cache

Post code will finish,ready to run int19 and load OS

Into Int19, to boot from floppy or other boot device

Initialize the ACPI function

Power manager initial & GEYSERVILLE CPU initialize

Clear USB status register and Initiallize the USB Hub controllor

2-16

Satellite M20 Maintenance Manual

2.4 System Board 2 Troubleshooting

Procedure 3 Printer Port LED Check (in Resume Mode)

The printer port LED displays the POST status and error status by turning lights on and off as an eight-digit binary value obtained in the resume or suspend mode after the system unit is switched on.

Follow the steps below to use the printer port LED:

1. Turn on the computer and set the resume or suspend mode.

2. Turn off the computer.

3. Plug the printer port LED into the computer's parallel port (printer port).

4. Read the LED status from left to right as you are facing the back of the computer.

5. Convert the LED status from binary to hexadecimal notation.

6. If the final LED status is FFh (normal status), go to Procedure 5.

7. If the final LED status matches any other status in Table 2-2, go to Procedure 6.

< Resume mode >

Table 2-2 Printer port LED resume mode status (1/7)

LED Status

(Hexadecimal)

0H

Test Item

DIAG_SYSTEM_INIT

1H

2H

3H

4H

5H

6H

DIAG_A20_DISABLE

DIAG_INIT_CHIPSET

DIAG_TEST_RAM

DIAG_MOVE_BB_LOADER

DIAG_EXECUTE_IN_DRAM

DIAG_USER_FLASH_CHECK

7H

8H

9H

AH

FH

CCH

99H

DIAG_SHADOW_BIOS

DIAG_CHECKSUM_BIOS

DIAG_NORMAL_BOOT

DIAG_CRISIS_BOOT

DIAG_FATAL_ERROR

DIAG_CRISIS_BEGIN

DIAG_RESUME_RAM_ERROR

Description

Boot started,read the cmos data for makesure main board power is stable

Disable A20 through A20

Initialize ChipsetSet,load chipset default size chache RAM send patten for test the basic 640k RAM

Move boot load segment into the RAM program execution from DRAM

Test print port for check crisis option is enable or not

Decompress the system BIOS, and

Shadow System BIOS to RAM

Checksum System BIOS ROM

Jump to the reset point

Proceed with Crisis Boot,first initial superio and boot device

Fatal Error,like the RAM error or ROM error

Start process the Crisis recovery procedure

Resume SMRAM not Found

Satellite M20 Maintenance Manual

2-17

2 Troubleshooting 2.4 System Board

Procedure 4 Test Program Check

The maintenance test program contains several programs for diagnosing the system board and CPU. Execute the following test programs using the procedures described in Chapter 3.

1. System test

2. Memory test

3. Keyboard test

4. Display test

5. Printer test (i.e LPT Port test)

6. COM Port test

7. Hard Disk test

8. Mouse test

9. IrDA test

10. SD Card test

11. CD-ROM/DVD-ROM test

12. Sound test

13. LAN test

If an error is detected during these tests, go to Procedure 5

Procedure 5 Replacement Check

The system board, memory, or CPU may be defective. Disassemble the computer following the steps described in Chapter 4 and replace the system board, memory module or CPU with a new one.

2-18

Satellite M20 Maintenance Manual

2.6 2.5-inch HDD 2 Troubleshooting

To check if the 2.5-inch HDD is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 Message Check

Procedure 2 Partition Check

Procedure 3 Format Check

Procedure 4 Test Program Check

Procedure 5 Connector Check and Replacement Check

CAUTION: The contents of the 2.5-inch HDD will be erased when the HDD 2.5-inch

HDD diagnostic test or formatting is executed. Save the required contents of the HDD to floppy disks or other storage drive in advance.

Procedure 1 Message Check

When the computer's HDD does not function properly, some of the following error messages may appear on the display. Follow the steps below to check the HDD.

Check 1 If either of the following messages appears, go to Procedure 2. If the following messages do not appear, perform Check 3.

Insert system disk in drive

Press any key when ready ..... or

Non-System disk or disk error

Replace and press any key

Check 2 Check TSETUP to see if the Hard Disk option has been set to “Not used”. If so, choose another setting and restart the computer. If the problem persists, go to Procedure 2.

Procedure 2 Partition Check

Enter the Toshiba MS-DOS system. Perform the following checks:

Check 1 Type

C:

and press the

Enter

key. If you cannot change to drive C, perform

Check 2. If you can change to drive C, perform Check 3.

Check 2 Type

FDISK

and press the

Enter

key. Choose “Display partition information” from the FDISK menu. If drive C is listed, perform Check 3. If drive C is not listed, return to the FDISK menu and choose the option to create a DOS

Satellite M20 Maintenance Manual

2-19

2 Troubleshooting 2.6 2.5-inch HDD

partition on drive C. Then restart the computer.. If the problem persists, go to

Procedure 3.

Check 3 If drive C is listed as active in the FDISK menu, perform Check 4. If drive C is not listed as active, return to the FDISK menu and choose the option to set the active partition for drive C. Then restart the computer. If the problem persists, perform Check 4.

Check 4 Enter

DIR C:

and press the

Enter

key. If the following message is displayed, go to Procedure 3. If contents of drive C are listed on the display, perform

Check 5.

Check 5

Invalid media type reading drive C

Abort, Retry, Fail?

Use the SYS command in the Toshiba MS-DOS system to install system files.

If the following message appears on the display, the system files have been transferred to the HDD. Restart the computer. If the problem persists, go to

Procedure 3.

System transferred

NOTE: If the computer is running Windows 2000/XP and the hard disk capacity is more than 512 MB, the FDISK program will ask if you need support for a partition larger than

2 GB. Select Y for large partition support; however, be sure to read the precaution regarding access by other operating systems.

Procedure 3 Format Check

The 2.5-inch HDD is formatted using the low-level format program and the MS-DOS

FORMAT program. Using these programs, follow the steps below to format the HDD.

Check 1 Enter FORMAT C:/S/U to format the HDD and transfer system files. If the following message appears on the display, the HDD has been formatted.

Format complete

If an error message appears on the display, refer to the Toshiba MS-DOS

Manual for more information and perform Check 2.

Check 2 Run the test program to format the 2.5-inch HDD with a low-level format option. See Chapter 3 for details on how to use the test program.

If the following message appears on the display, the HDD low-level format is complete. Partition and format the HDD using the MS-DOS FORMAT command.

Format complete

2-20

Satellite M20 Maintenance Manual

2.6 2.5-inch HDD 2 Troubleshooting

If you cannot format the HDD using the test program, go to Procedure 4.

Procedure 4 Test Program Check

Run the HDD test program stored on the maintenance test program disk for all test items.

See Chapter 3 for details on how to use the test program.

If an error is detected during the HDD test, an error code and status will be displayed. The error codes and their status names are listed in Table 2-3. If an error code is not generated and the problem still exists, go to Procedure 5.

Table 2-3 HDD error code and status

Code

1

2

3

4

5

6

Get Parameter Fail !

Read Old Data Error

Status

Write Pattern Error

Read Back Data Error

Data Compare Error

Restore Data Error

7

9

Read Verify Error

Seek Error

10 Disk Controller Self Test Failed

11 Disk Controller Test unexpected interrupt Failed

12 Disk Controller action Test Failed

13 disk dos not support SMART

14 disk read attribute threshold error

15 disk read attribute value error

16 disk SMART attribute value error

Satellite M20 Maintenance Manual

2-21

2 Troubleshooting 2.6 2.5-inch HDD

Procedure 5 Connector Check and Replacement Check

The HDD or system board may be faulty. Disassemble the computer following the steps described in Chapter 4 and perform the following checks:

Check 1 Make sure the following connectors have been firmly connected to the HDD, system board and CPU.

Check 2

Check 3

Check 4

HDD

System board

CPU

If any connector is loose or off, reconnect it firmly and return to Procedure 1.

If there is still an error, perform Check 2.

The HDD may be damaged. Replace it with a new one following the disassembling instructions in Chapter 4. If the problem persists, perform

Check 3.

The System board may be damaged. Replace it with a new one following the disassembling instructions in Chapter 4. If the problem persists, perform

Check 4.

The CPU may be damaged. Replace it with a new one following the disassembling instructions in Chapter 4.

2-22

Satellite M20 Maintenance Manual

2.7 Keyboard 2 Troubleshooting

2.6 Keyboard

To check if the computer’s keyboard is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 External Keyboard Check

Procedure 2 Test Program Check

Procedure 3 Connector Check and Replacement Check

Procedure 1 External Keyboard Check

Connect a PS/2 or compatible keyboard to the computer's PS/2 keyboard/mouse port, then boot the computer. The computer automatically detects the external keyboard even if resume mode is enabled.

If the external keyboard works correctly, the internal keyboard may be faulty. Go to

Procedure 3.

If the external keyboard appears to have the same problem as the internal keyboard, the system board may be faulty. Go to Procedure 2.

Procedure 2 Test Program Check

Execute the Keyboard test available as part of the maintenance test program. See Chapter 3 for information on how to perform the test.

If an error is detected in the test, go to Procedure 3. If no error is detected, the keyboard itself is normal.

Procedure 3 Connector Check and Replacement Check

The keyboard or system board may be disconnected or faulty. Disassemble the computer following the steps described in Chapter 4 and perform the following checks:

Check 1 Make sure the keyboard cable has been firmly connected to the system board.

Check 2

Keyboard

System board

CPU

If the cable is loose or off, reconnect it firmly and return to Procedure 2. If there is still an error, perform Check 2.

The keyboard may be faulty. Replace it with a new one following the instructions in Chapter 4. If the problem persists, perform Check 3.

Satellite M20 Maintenance Manual

2-23

2 Troubleshooting 2.7 Keyboard

Check 3

Check 4

Check 5

The System board may be faulty. Replace it with a new one following the instructions in Chapter 4. If the keyboard is still not functioning properly, perform Check 4.

The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform

Check 5.

The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one.

2-24

Satellite M20 Maintenance Manual

2.8 Display 2 Troubleshooting

2.7 Display

To check if the computer’s display is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 External Monitor Check

Procedure 2 Test Program Check

Procedure 3 Connector Check and Replacement Check

Procedure 1 External Monitor Check

Connect an external monitor to the computer's external monitor port, then boot the computer.

The computer automatically detects the external monitor even if resume mode is enabled.

If the external monitor works correctly, the internal LCD, LCD/FL cable, or FL may be faulty. Go to Procedure 3.

If the external monitor appears to have the same problem as the internal monitor, the system board may be faulty. Go to Procedure 2.

Procedure 2 Test Program Check

Insert the diagnostics bootable CD in the computer's CD ROM, turn on the computer and run the test. See Chapter 3 for information on how to perform the test.

If an error is detected in the test, go to Procedure 3. If no error is detected, the display itself is normal.

Procedure 3 Connector Check and Replacement Check

The display unit has an LCD module, Fluorescent lamp (FL), panel close switch and FL inverter board. Any of the components or their connections may be defective. Disassemble the computer following the steps described in Chapter 4, then perform the following checks:

(1) If the FL does not light, perform Check 1.

(2) If characters or graphics are not displayed normally, perform Check 5.

(3) If the FL remains lit when the display is closed, the panel close switch may be defective. Perform Check 8.

Check 1 Make sure the following cables have been firmly connected to the system board and FL inverter board.

FL

FL inverter board

System board

CPU

Check 2

HV cable LCD/FL cable

If any of the cables is loose or off, reconnect it firmly and return to Procedure

3. If there is still an error, perform Check 2.

The LCD/FL cable may be faulty. Replace it with a new one and return to

Procedure 3. If there is still an error, perform Check 3.

Satellite M20 Maintenance Manual

2-25

2 Troubleshooting 2.8 Display

Check 3

Check 4

Check 5

The FL may be faulty. Replace it with a new one and return to Procedure 3. If there is still an error, perform Check 4.

The FL inverter board may be faulty. Replace it with a new one and return to

Procedure 3. If there is still an error, perform Check 5.

Make sure the LCD/FL cable has been firmly connected to the system board and LCD module.

FL inverter board

System board

CPU

Check 6

Check 7

Check 8

LCD/FL cable

If the cable is loose or off, reconnect it firmly and return to Procedure 3. If there is still an error, perform Check 6.

The LCD/FL inverter cable may be faulty. Replace it with a new one and return to Procedure 3. If there is still an error, perform Check 7.

The LCD module may be faulty. Replace it with a new one and return to

Procedure 3. If there is still an error, perform Check 8.

The System board may be faulty. Replace it with a new one. If there is still an error, perform Check 9.

Check 9 The CPU may be faulty. Replace it with a new one following the instructions in Chapter 4.

Check 10 The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform

Check 10.

2-26

Satellite M20 Maintenance Manual

2.9 DVD-ROM Drive 2 Troubleshooting

To check if the internal DVD-ROM drive is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 DVD-ROM Cleaning Check

Procedure 2 Test Program Check

Procedure 3 Connector Check and Replacement Check

Procedure 1 DVD-ROM Cleaning Check

1. Turn off the power to the computer.

2. Open the DVD tray by inserting a slender object such as a straightened paper clip into the eject hole. The object must be long enough to activate the eject mechanism.

3. Clean the laser pickup lens with a lens cleaner. Apply the cleaner to a cloth and wipe the lens.

4. If the DVD-ROM drive still does not function properly after cleaning, go to

Procedure 2.

Procedure 2 Test Program Check

Execute the CD-ROM/DVD-ROM drive test program available as part of the maintenance test program. Insert the diagnostics CD in the computer's CD-ROM, turn on the computer and run the test. Then insert a test DVD (Toshiba-EMI DVD-ROM TEST DISK TSD-1) into the DVD-ROM drive. See Chapter 3 for information on how to perform the test.

If any error is detected by the test, go to Procedure 3.

Procedure 3 Connector Check and Replacement Check

The DVD-ROM drive is connected to the system board by the connector. The connector may be disconnected from the system board or faulty. Disassemble the computer following the steps described in Chapter 4 and perform the following checks:

Check 1 Make sure the following connector has been firmly connected to the DVD-

ROM drive and the system board.

DVD-ROM drive

System board

CPU

Attachment case

Connector

If the connector is loose or off, reconnect it firmly and return to Procedure 2.

Check 2

If there is still an error, perform Check 2.

The connector may be faulty. Replace the connector with a new one following the steps in Chapter 4. If the DVD-ROM drive is still not functioning properly, perform Check 3.

Satellite M20 Maintenance Manual

2-27

2 Troubleshooting 2.9 DVD-ROM Drive

Check 3

Check 4

Check 5

Check 6

The DVD-ROM drive may be faulty. Replace the DVD-ROM drive with a new one following the steps in Chapter 4. If the DVD-ROM drive is still not functioning properly, perform Check 4.

The system board may be faulty. Replace it with new one following the instructions in Chapter 4. If the DVD-ROM drive is still not functioning properly, perform Check 5.

The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform

Check 6.

The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform

Check 3.

2-28

Satellite M20 Maintenance Manual

2.10 CD-ROM Drive 2 Troubleshooting

To check if the internal CD-ROM drive is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 CD-ROM Cleaning Check

Procedure 2 Test Program Check

Procedure 3 Connector Check and Replacement Check

Procedure 1 CD-ROM Cleaning Check

1. Turn off the power to the computer.

2. Open the CD tray by inserting a slender object such as a straightened paper clip into the eject hole. The object must be long enough to activate the eject mechanism.

3. Clean the laser pickup lens with a lens cleaner. Apply the cleaner to a cloth and wipe the lens.

4. If the CD-ROM drive still does not function properly after cleaning, go to Procedure

2.

Procedure 2 Test Program Check

Execute the CD-ROM/DVD-ROM drive test program available as part of the maintenance test program. Insert the diagnostics CD in the computer's CD-ROM, turn on the computer and run the test. Then insert a test CD (A-BEX TCDR-702) into the CD-ROM drive. See

Chapter 3 for information on how to perform the test.

If any error is detected by the test, go to Procedure 3.

Procedure 3 Connector Check and Replacement Check

The CD-ROM drive is connected to the system board by the CD-ROM connector. The connector may be disconnected from the system board or faulty. Disassemble the computer following the steps described in Chapter 4 and perform the following checks:

Check 1 Make sure the following connector has been firmly connected to the CD-ROM drive and the system board.

CD-ROM drive

System board CPU

Attachment case

Check 2

Connector

If the connector is loose or off, reconnect it firmly and return to Procedure 2. If there is still an error, perform Check 2.

The connector may be faulty. Replace the connector with a new one following the steps in Chapter 4. If the CD-ROM drive is still not functioning properly, perform Check 3.

Satellite M20 Maintenance Manual

2-29

2 Troubleshooting 2.10 CD-ROM Drive

Check 3

Check 4

Check 5

Check 6

The CD-ROM drive may be faulty. Replace the CD-ROM drive with a new one following the steps in Chapter 4. If the CD-ROM drive is still not functioning properly, perform Check 4.

The system board may be faulty. Replace it with new one following the instructions in Chapter 4. If the CD-ROM drive is still not functioning properly, perform Check 5.

The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform

Check

6.

The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one.

2-30

Satellite M20 Maintenance Manual

2.12 LAN 2 Troubleshooting

2.10 LAN

To check if the computer’s LAN is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 Test Program Check

Procedure 2 Connector Check and Replacement Check

Procedure 1 Test Program Check

Execute the LAN test program available as part of the maintenance test program. This program checks the LAN. Insert the Bootable CD into the CD-ROM. Turn on the computer and run the test. See Chapter 3 for information on how to perform the test.

If any error is detected by the test, go to Procedure 2

Procedure 2 Connector Check and Replacement Check

The LAN connector (RJ45) is mounted on the system board. If the LAN malfunctions, the system board or CPU might be faulty.

Disassemble the computer following the steps described in Chapter 4 and perform the following checks:

Check 1 The system board may be faulty. Replace it with a new one following the instructions in Chapter 4. If the LAN is still not functioning properly, perform

Check 2

Check 2.

The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform

Check 3

Check 3.

The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one.

Satellite M20 Maintenance Manual

2-31

2 Troubleshooting 2.14 Cooling Module

2.11 Cooling Module

To check if the computer’s cooling module is defective or malfunctioning, follow the troubleshooting procedures below as instructed.

Procedure 1 Test Program Check

Procedure 2 Connector Check and Replacement Check

Procedure 1 Test Program Check

Execute the Fan On/Off test program available as part of the maintenance test program. This test program checks the cooling module. Insert the diagnostics bootable CD in the computer's CD-ROM, turn on the computer and run the test. See Chapter 3 for information on how to perform the test.

If any error is detected by the test, go to Procedure 2.

Procedure 2 Connector Check and Replacement Check

The cooling module is connected to the system board. If the cooling module malfunctions, there may be a bad connection between the cooling module and the system board or either might be faulty.

Disassemble the computer following the steps described in Chapter 4 and perform the following checks:

Check 1 Make sure the cooling module has been firmly connected to the connector on the system board. Also make sure that the tape is not stuck to any part of the fan and that the fan is free of foreign matter.

Check 2

Check 3

Check 4

Cooling module

System board

CPU

If the connector is disconnected, connect it firmly to the system board and return to Procedure 1. If the tape is stuck to any part of the fan, stick it back to the specified point. If a foreign matter is found in the fan, remove it and then return to Procedure 1. If there is still an error, perform Check 2.

The cooling module may be faulty. Replace it with a new one following the steps in Chapter 4. If the cooling module is still not functioning properly, perform Check 3.

The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist

, perform

Check 5.

The CPU may be faulty. Replace it with a new one following the steps in

Chapter 4.

2-32

Satellite M20 Maintenance Manual

2.14 Cooling Module 2 Troubleshooting

Check 5 The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one.

Satellite M20 Maintenance Manual

2-33

Chapter 3

Diagnostic Programs

ii

3 Diagnostic Programs

Chapter 3 Contents

3.1

General.......................................................................................................................... 1

3.2

Quick Start .................................................................................................................... 3

3.2.1

Quick Test ............................................................................................... 3

3.2.2

Customization Test.................................................................................. 3

3.2.3

Audio Play Test....................................................................................... 7

3.2.4

Audio Record Test................................................................................... 7

3.2.5

DMI Read................................................................................................ 7

3.2.6

DMI Write ............................................................................................... 7

3.2.7

System Information ................................................................................. 9

3.2.8

View Logs ............................................................................................. 10

3.2.9

Exit to MS DOS .................................................................................... 10

3.2.10

The Diagnostics Screen Explanation..................................................... 10

3.3

Options........................................................................................................................ 14

3.3.1

Overview ............................................................................................... 14

3.3.2

Batch Parameters Configuration ........................................................... 15

3.3.3

Item’s Parameters Configuration........................................................... 17

3.3.4

Load Batch Parameters.......................................................................... 18

3.3.5

Save Batch Parameters .......................................................................... 18

3.3.6

LOG Parameters Setting….................................................................... 19

3.3.7

Specify LOG Viewer............................................................................. 20

3.3.8

Display LOG File .................................................................................. 20

3.3.9

LOG Viewer .......................................................................................... 21

3.3.10

LOG File Sample................................................................................... 22

3.4

Subtests ....................................................................................................................... 24

3.5

System Test................................................................................................................. 28

3.6

Memory Test............................................................................................................... 32

3.7

Storage ........................................................................................................................ 36

3.8

Video........................................................................................................................... 40

3.9

Communication (COMM) .......................................................................................... 48

3.10

Peripheral .................................................................................................................... 54

Satellite M20 Maintenance Manual

3 Diagnostic Programs

3.11

Error Codes and description........................................................................................ 57

3.12

Quick Test Item List ...................................................................................................... i

Satellite M20 Maintenance Manual

iii

3.1 General 3 Diagnostic Programs

3.1 General

This chapter explains the diagnostic programs for testing and diagnosing the functions of the hardware components of this computer. The diagnostic programs can be categorized into two types: OPTION and DIAGNOSTIC TEST.

NOTE: Before running a test, be sure to:

1. Check that all the cables are connected securely.

2. Exit the application that is currently running and close Windows.

The OPTION consists of the following functions:

Select All Items

Test All Items

Edit Batch Parameters

Load Batch Parameters

Save Batch Parameters

Log Parameters

Specify Log Viewer

Display Error Log File

DOS Shell

Exit to DOS

The DIAGNOSTIC TEST Devices provides the following tests:

System Test

Memory Test

Storage Test

Video Test

Communication Test

Peripheral Test

Audio Test

DMI Read/Write

System Information

Get the following tools prepared before running the diagnostic programs:

A Service Diagnostic BOOT CD

A Formatted FLOPPY DISK

A LPT Loop back Connector (for LPT port Loop back test)

A standard LPT printer (for LPT Printer test)

A Test Media CD (A-BEX TEST CD-ROM TCDR-702)(for CD-ROM test)

A Test Media DVD (Toshiba-EMI DVD-ROM TEST DISK TSD-1)

An External Monitor (for DISPLAY test)

Satellite M20 Maintenance Manual 1

3 Diagnostic Programs 3.1 General

A Serial Port Loop back Connector (for serial port test)

A CD-ROM Driver (for CD-ROM test)

A Microphone

An Audio CD (for CD-ROM audio play test)

A Data CD (for CD-ROM test)

A Test Media CDRW/DVD-CDRW Drive

A Rewritable CDRW (Direct CD Format)

The following chapters describe all the test details. The test items could be selected from the

DIAGNOSTIC TEST menu.

Note:

When boot up the unit for the first time, system will automatically select the location of the result log file. If a USB floppy drive is connected, and an unprotected floppy diskette with more then 50KB spare space in the drive, system will save all log files into the root directory the diskette; otherwise, system will save all log files in the root directory of RAM disk.

2

Satellite M20 Maintenance Manual

3.2 Quick Start 3 Diagnostic Programs

Boot from Service Diagnostic CD, the following screen will be displayed:

Please select a test item or select 9 to exit to MS-DOS:

3.2.1 Quick Test

When this item selected, system will run the configured test items and generate a test report automatically.

When the test completes, a file named Quick.log would be saved in the defined location.

For the backup purpose of the log file, system will automatically rename Quick.log to Quick.old when Quick.log is created and there is already a file quick.log existed.

Testing all items will take 8-15 minutes. User must plug the COM Test Fixture & LPT Text

Fixture before testing. During the testing, user is required to verify the test result.

The detail of test item please reference Quick Test Item List

.

3.2.2 Customization Test

When this item selected, system will run the diagnostic programs according to the procedures you defined. When the test complete, a file named Custom.log will be saved in the defined location Please see the following example-- Mouse test.

1.

Use arrow key to select ‘PS2 Mouse’ item on ‘Peripheral’ in the menu, then press Space key to select it. (When selected, there is a X marked in the

[ ]

)

Satellite M20 Maintenance Manual 3

3 Diagnostic Programs 3.2 Quick Start

4

Select ‘Test Mouse’ or press F8 to run the test. The test information would prompt in the screen as below. This test item need user to verify whether the mouse works normally.

The test result will be displayed in the following screen:

Satellite M20 Maintenance Manual

3.2 Quick Start 3 Diagnostic Programs

Here is another method to run the test: Highlight a test item by using arrow keys, then press Enter to start. If there are parameters provided, user should set parameters in the parameter dialog window.

CPU Speed Test (Step by Step):

1.

Select test item:

Select SystemCPUCPU Speed, then press the Enter key.

2.

Parameters Setting

Choose the OK button after you set the proper parameters in the following window.

Satellite M20 Maintenance Manual 5

3 Diagnostic Programs 3.2 Quick Start

3.

Test Result

System will automatically run and display the test result as follows:

6

Following is the comparison report of the two testing methods mentioned above:

1) Configuration and Running

As to the method used in Mouse test, the user is required to select test items by pressing

Space key and set the parameters artificially, (See

3.3.3 Item’s Parameters

Configuration

) Then press F8 to start test. Each parameter should be configured in advance by the use, otherwise the default parameters would be used. Using this method, user is allowed to select more than one test item at one time.

2) Running the current test item

As to the method adopted in CPU Speed test, user should highlight the test item and press Enter to start testing. And the user has to setup the parameters every time before running the test. Using this method, only one test item would be tested at one time.

Satellite M20 Maintenance Manual

3.2 Quick Start 3 Diagnostic Programs

3.2.3 Audio Play Test

Check whether the system could playback audio normally. When the test complete, a file named Audio_P.log will be saved in the defined location.

3.2.4 Audio Record Test

Check whether the system could record the sound and playback it normally. When the test complete, a file named Audio_R.log will be saved in the defined location.

Because no internal microphone, a message is showed before the test as below:

Please ensure that the external microphone were linked, and

Press any key to continue …

3.2.5 DMI Read

Read the information from the system’s SMBIOS and display it in the screen as follows:

User can press any key to exit the program.

3.2.6 DMI Write

In addition to reading the DMI information, DMI Write also permit attributes editing and updating: Manufacture, Product Name, Version, Serial Number, UUID and OEM

Part Number, etc. The following screen will be displayed:

Satellite M20 Maintenance Manual 7

3 Diagnostic Programs 3.2 Quick Start

In this screen, there are two lines which attribute could be edited and updated. The 1 st line (the font in yellow with blue background) shows the attribute’s value that is read from the current system and the 2 nd

line (the font in red with turquoise background) shows the same value as that in the 1 st

line before user’s editing. User can modify the attribute’s value in the 2 nd

line and press Enter to confirm the current editing and continue editing the next attribute.

During the editing, user could press F2 to confirm the DMI attribute update or press F4 to ignore the modification. Press ESC to exit the program of DMI Write.

The confirmation screen is as below:

8

The attributes that have been modified would be marked in red, otherwise in yellow.

User could press F2 to save the changes, or press F4 to ignore and exit the current program.

Satellite M20 Maintenance Manual

3.2 Quick Start 3 Diagnostic Programs

3.2.7 System Information

This function is used to read the system information. When the test complete, a file named System.log will be saved in the defined location during the reading process, the following screen will be displayed to indicate that the progress is in detection:

On the left column of the above screen, the detected hardware components are listed. The corresponding information of the detected hardware components is displayed on the right of the screen. It displays the current running status information of the check program.

The name of the program is marked on the top of the screen. At the bottom, the function keys are listed for user operation. During the detection, keyboard operation is invalid.

When the detection finished, the hardware components information will be displayed as follows:

Satellite M20 Maintenance Manual 9

3 Diagnostic Programs 3.2 Quick Start

User can use function keys listed on the bottom of the screen to display the configuration of the component or exit the current program. On the left column, the components information is listed and user can use arrow keys or PgUp/PgDn to view the list and highlight the chosen component. On the right column, the configuration information of the highlighted component is listed. Press ESC to exit this program.

3.2.8 View Logs

User can enter one choice to view a log file in the screen as follows.

3.2.9 Exit to MS DOS

Select this item to exit to MS DOS.

3.2.10 The Diagnostics Screen Explanation

Below is an example of running a test item. It includes the following parts: Diagnostics

Windows, Test Status Area, Progress Bar, Error List, Test Item’s Title, Status Bar and

Message Box.

10

Satellite M20 Maintenance Manual

3.2 Quick Start 3 Diagnostic Programs

1. Diagnostics Windows

When a test item is running, a Diagnostics Windows is displayed in full screen. It consists of the following parts: Title Bar, Test Running Status and Report Panel, Status Bar. There would prompt a message box called USER BREAK in the central of the window whether user press ESC to interrupt the test.

2. Test Running Status and Report Panel

Test Running Status and Report Panel are located on the middle of Diagnostics Windows.

Test item name, test process and test result are displayed in the left;

Test status and result are displayed in the upper right corner of the screen. It displays the test status of the current test item – TEST (in testing), PASS (test finished and its result is passed), FAIL (test finished and its result is failed) and SKIP (test skipped).

The error list of each test module is displayed at the lower right corner of the screen. It would display the total error quantity found in the test, the most recent five error codes and description would be shown here. Detailed error report could be viewed with

Logview.exe.

When pressing ESC key during the test process, a User Break Windows will be popped up for the user to select.

3. USER BREAK

Pressing ESC key to interrupt the test, USER BREAK message box would be prompted out in the central of Diagnostics Window for the user to select the following actions:

CONTINUE---- Continue the test;

SKIP---- Stop the sub-item of current test item to go to the next item’s test;

ABORT----Stop the current test item to test the next module.

ABORT ALL---- Stop all the selected test items. User could use the hot key Ctrl+D to achieve the same operation. When the user calls ABORT ALL, the following message box will prompt for his selecting.

4. Title Bar:

Title Bar located at the top of the window, it includes information as follows:

Satellite M20 Maintenance Manual 11

3 Diagnostic Programs 3.2 Quick Start

Program Name and Its Version: Service Diagnostic Ver1.01;

Test Module Name: Label the name and version of the test module. For example, in the above screen, the name of the test module is ‘Memory Tester Build Date 2002.12.31’.

Status Bar: Located at the bottom of the screen as follows:

The status bar is used to indicate the current script setting and test status. It consists of two lines that includes the information as follows:

Test Mode: TIMEBOUND or LOOPBOUND, e.g. LOOPBOUND in the above screen;

Script File Name: Script file name, e.g. ‘Quick_B.INI’ in the above screen;

Current Time(C. TIME): Current system time, e.g. ‘C.TIME: 2003-03-27 19:17:53’ in the above screen;

Test Time Remaining (LEFT): In TIMEBOUND mode, it would display the remaining test time at the same location as Current TIME (C. TIME) in the above screen;

Current Loop Count: In LOOPBOUND mode, it will display the total LOOP number planning to execute and the current LOOP number have been finished, e.g. ‘COUNT:

01/01’ in the above screen;

CPU Temperature: Detect the temperature in the current CPU, e.g. ‘CPU: 38C’ in the above screen;

Remaining Battery Capacity: Remaining Battery Capacity detected in the current

Battery, e.g. ‘BAT: 100%’;

Test Order: Define the test sequence. There are two sequence modes: Sequential Test

Mode and Random Test Mode. The default mode is Sequential Test Mode, it would displays ‘ORDER: SEQ’ as in the above screen;

LOG File Name: Display the file name of the test log, e.g. Quick.Log in the above screen;

Start Test Time (S.TIME): Display the test start time for the current test item or the test script, e.g. ‘S.TIME: 2003-03-27 19:17:11’ in the above screen;

Break On Error: Display ‘HALT’ as shown in the above screen when ‘Break On Error’ is enabled;

Wait On Error: Display ‘WAIT’ as shown in the above screen when ‘Wait On Error’ is enabled;

12

Satellite M20 Maintenance Manual

3.2 Quick Start 3 Diagnostic Programs

Pause Enable: Display PAUSE when “Pause Enable” is enabled;

Manual Interrupt Method: Display ‘Esc: Break’ to tell the user how to manually interrupt the test process.

Satellite M20 Maintenance Manual 13

3 Diagnostic Programs

3.3 Options

3.3 Option

3.3.1 Overview

In Service Diagnostics, with the Options menu user can configure the batch parameters, test item’s parameters and those parameters created by the LOG file.

14

Options Menu Notes:

Select All/None Items

Switch between selecting all test items and selecting none, the hot key is F6.

Test Selected Items

Execute all selected test items in this editor, the hot key is F8.

If “Interactive” option in batch parameters has not been selected on, a warning message would be shown as below:

Edit Batch Parameters

Satellite M20 Maintenance Manual

3.3 Option 3 Diagnostic Programs

Configure batch parameters and all the test item’s parameters.

• Load Batch Parameters

Upload all the test items and parameters in the *.ini file

Save Batch Parameters

Save all parameters and test items configured in the editor to a specified file

Log Parameters

Configure LOG parameters.

Specify LOG Viewer

Specify the viewer for the LOG file.

Display Error Log File

Load the LOG file viewer specified in the Specify Log Viewer to view the LOG file.

DOS Shell

Enter the DOS Shell and execute the DOS programs. You can also exit to the

Service Diagnostics Editor by command of EXIT.

Exit to DOS

Exit the Service Diagnostics Editor and back to DOS.

3.3.2 Batch Parameters Configuration

The batch parameters configuration screen can be accessed through Service

Diagnostics/OPTIONS -> EDIT BATCH PARAMETERS -> BATCH

PARAMETERS:

Satellite M20 Maintenance Manual 15

3 Diagnostic Programs 3.3 Option

16

Test Order

Specify the order of the test items. Choose 'Sequence' to adopt the sequential mode; choose 'Random' to run the test items in random sequence.

Test Options

Choose one of the following options:

Wait On Error

Wait for further confirmation while an error occurs.

Break On Error

Stop the test when a test item fails.

Pause Enable

Pause at the end of each test items and wait for the user to response with the test items that requires the user to assist the test processes, such as the key stroke test.

Interactive

Whether the option here is enabled, it would affect all the test items while the same option in “Item Parameters Configuration” only affect that test item

Monitor Battery Life

Monitor the remaining battery capacity (percent).

Monitor CPU Thermal

Monitor the CPU temperature.

Satellite M20 Maintenance Manual

3.3 Option 3 Diagnostic Programs

Test Mode

LOOPBOUND

The chosen test items will run repeatedly according to the times specified in the

'Number of Loops'.

TIMEBOUND

The chosen test items will run for an extent time specified in 'Time Limit Hrs' and

'Time Limit Min'.

Time Limit Hrs

Specify the hours whether 'TIMEBOUND' is chosen under the batch mode.

Time Limit Min

Specify the minutes whether 'TIMEBOUND' is chosen under the batch mode.

Number Of Loops

Specify the repeating times when 'Loop Bound' is chosen under the batch mode.

3.3.3 Item’s Parameters Configuration

The test items’ parameters configuration screen can be accessed through Service

Diagnostics/Options -> Edit Batch Parameters -> Item’s Parameters-> System-

>CPU-> Basic Functionality:

Repeat count

Repeat times of the test item.

Interactive

Pause at the end of test items and wait for the user to response whether the test item requires the user to assist the test process, such as the Key Stroke test.

Satellite M20 Maintenance Manual 17

3 Diagnostic Programs 3.3 Option

Whether the option here is enabled, it only affects the current test item.

Parameters

For the test items with specific parameters, this option will call the related configuration screens. Otherwise, the program will show the following dialogue window:

Parameters for the specific test items:

Some test items (Memory, HDD, e g...) have their individual parameters, which can be configured in their parameters setting window.

3.3.4 Load Batch Parameters

Batch parameter is saved in the script file whose extension name is INI (*.INI).

Below is the screen shot of “Load Batch Parameters”.

In this window, you can specify the .INI files that you wanted to be edited or modified.

3.3.5 Save Batch Parameters

Here you can save the edited or modified content to the batch parameters files.

18

Satellite M20 Maintenance Manual

3.3 Option 3 Diagnostic Programs

3.3.6 LOG Parameters Setting…

You can access the Log Parameters screen through Service Diagnostics\Options -

Generate Report.

Report Destination

With 'NONE' selected, no log file will be generated; With 'FILE' selected, a log file with the name specified in 'Log File Name' will be generated.

Log Options

Log Errors

With this parameter selected, errors will be recorded when the test fails.

Log Test Activities

With this parameter selected, the subtest results will be recorded.

Log Test Start Time

Satellite M20 Maintenance Manual 19

3 Diagnostic Programs 3.3 Option

With this parameter selected, the start time of the test will be recorded.

Log Test End Time

With this parameter selected, the end time of the test will be recorded.

Log Errors Only

With this parameter selected, errors will be recorded only when the test fails.

Log Errors Only with Time

With this parameter selected, errors and time will be recorded only when the test fails.

Append to Old Log File

With this parameter selected, the new log will be added to the old one.

Log Device Info on Fail

With this parameter selected, details of the failed test will be recorded.

Log file Name

Specify the Log file name. You can input the detail path of the file. System will show the detail path of the file.

3.3.7 Specify LOG Viewer

You can specify the Log file viewer in the Specify Log Viewer screen.

The default viewing program of Service Diagnostics is LogView.exe

3.3.8 Display LOG File

You can specify the Log file for viewing in the Display Error Log File screen.

20

Satellite M20 Maintenance Manual

3.3 Option 3 Diagnostic Programs

In this screen, you can specify a Log file and view it with the viewer designated in

Specify LOG Viewer.

3.3.9 LOG Viewer

Service Diagnostic Log viewer:

↑, ↓

Scroll a line backward or forward on the screen.

Page Up, Page Down

Scroll a page backward or forward on the screen.

Satellite M20 Maintenance Manual 21

3 Diagnostic Programs 3.3 Option

Esc

Exit the Log viewer.

F1

Display the Help information about the Logviewer operations and the functional keys.

Ctrl+Home

Go to the start of the log file.

Ctrl+End

Go to the end of the log file.

Ctrl+F3

Prompt the search dialogue for the user to input the string to be looked for and specify the searching method.

F3

Find the next corresponding strings given.

3.3.10 LOG File Sample

Log file is a test result file, which records the following information: Test module name,

Test item name, Start/End time and the test result (including PASS, FAIL, SKIP and

ABORT). When a failure is found, both the error code and the error information were recorded.

In the Log file, we use Test Items as the test item name, which could not be modified in the whole time. And we use the Internal Name as name in the program’s UI, which corresponds to the test item name and could be modified according to the user’s favorite.

The following section is a sample of log file:

DIAG REPORT

<Module Name>: Service Diagnostic Ver 1.00 .... Keydoard Test Build Date 2002.12.31

[KBLed]

Begin Time: Thu Mar 13 14:38:05 2003

22

Satellite M20 Maintenance Manual

3.3 Option 3 Diagnostic Programs

Green Test on LED : PASS

ALL LED Test on keyboard : PASS

Orange Test on LED : PASS

HDD Green LED Test Press p-key pause : PASS

End Time: Thu Mar 13 14:38:25 2003

<Module Name>: Service Diagnostic Ver 1.00 .... System Board Test Ver2002.12.31

[Speaker]

Begin Time: Thu Mar 13 14:39:24 2003

Speaker : FAIL

ITEM TEST FAIL

Function ID :306

Error Code :30612

Error Message :System Board Speaker Error

End Time: Thu Mar 13 14:39:34 200

3

Satellite M20 Maintenance Manual 23

3 Diagnostic Programs 3.4 Subtests

3.4 Subtests

Memory

Test Group

Sub

Item ID

System 01 CPU

Subtest

Test

ID

Test Items

01 Basic Functionality Test

Internal Name

Coprocessor

[CPUBasicFun]

[CPUSpeed]

Coprocessor

[NPUFun]

[NPUInterrupt]

09 Random Memory

05 CPU Protected Mode

01 Randomize Test

[Protect]

[Speedstep]

[MMX]

03 FAN

01 BIOS ROM

02 Pattern

01 [DMACtrl]

02

03 Clock / Calendar

06 Plug and Play

01 FAN Speed Test

01 Bit Stuck High Test

02 Bit Stuck Low Test

03 Checker Board Test

04 CAS Line Test

[Timer]

[RealClock]

[Speaker]

[PCI]

[PnP]

[ACPI]

[FANSpeed]

[BIOSROM]

[BSHigh]

[BSLow]

[ChkBd]

[CASLine]

05 Incremental Test

06 Decremental Test

[Incrment]

[Decrment]

07 Incremental Decremental Test [Idcrment]

03 Extended Pattern

04 Walking 1's Test

05 Walking 0's Test

01 Read/Write Cycle Test

02 Read Cycle Test

Address

[XWRCycle]

[XRCycle]

[WalkHigh]

[WalkLow]

[Address]

[Refresh]

[CacheOne]

[Random]

24

Satellite M20 Maintenance Manual

3.4 Subtests 3 Diagnostic Programs

10 Data Bus Test

11 Memory Speed Test

02 Random Increment Read/Write [RandIncr]

[DataBus]

[MemSpeed]

Video

[Perform1]

06 [SMART1]

02 01 [CDRWController1]

01 Text Mode

02 640*480 VGA Mode

03 VESA Video Modes

02 Data Transfer Rate

03 Audio CD Play

04 Data CD Butterfly Seek

05 Data CD Random Seek

06 Data CD Sequence Seek

07 CDRW Write Test

[CDRWTransRate1]

[CDRWAudio1]

[CDRWButterfly1]

[CDRWSeek1]

[CDRWSFSeek1]

[CDRWWrite1]

08 Tray Eject Test

01 Character Test

02 [Attribut]

03 Text Page Selection [PageSel]

[Color]

05 80*25 Text Mode

01

640X480 Video Modes

VESA 640x480x256 Mode

VESA 640x480x32K Mode

VESA 640x480x64K Mode

VESA 640x480x16M Mode

VESA 640x480x32bit Mode

800X600 Video Modes

VESA 800x600x256 Mode

VESA 800x600x16M Mode

VESA 800x600x32bit Mode

1024X768 Video Modes

VESA 1024x768x256 Mode

[CDRWTray1]

[CharTest]

[Text Mode]

[VGAMode]

[V640480_8]

[V640480_15]

[V640480_16]

[V640480_24]

[V640480_32]

[V800600_8]

[V800600_15]

[V800600_16]

[V800600_24]

[V800600_32]

VESA 1024x768x16M Mode

VESA 1024x768x32bit Mode

[V1024768_8]

[V1024768_15]

[V1024768_16]

[V1024768_24]

[V1024768_32]

Satellite M20 Maintenance Manual 25

3 Diagnostic Programs 3.4 Subtests

1280X1024 Video Modes

VESA 1280x1024x32K Mode

VESA 1280x1024x16M Mode

VESA 1280x1024x32bit Mode

1400X1050 Video Modes

VESA 1400x1050x32K Mode

VESA 1400x1050x16M Mode

VESA 1400x1050x32bit Mode

1600X1200 Video Modes

VESA 1600x1200x32K Mode

VESA 1600x1200x16M Mode

VESA 1600x1200x32bit Mode

04 VESA Video Memory

05

[V12801024_15]

[V12801024_16]

[V12801024_24]

[V12801024_32]

[V14001050_15]

[V14001050_16]

[V14001050_24]

[V14001050_32]

[V16001200_15]

[V16001200_16]

[V16001200_24]

[V16001200_32]

[VESAMEM]

[AGP]

06 LCD Panel Test

Test

09 Direct Color Test

[LCDPanel]

[Register]

[ColPurity]

11 Bitblt Engine Test

[DirectColor]

[DACPalAddr]

[Bitblt]

[LPTRegister1]

[LPTInterrupt1]

04 ECP Mode

05

[LPTECP1]

[LPTPrinter1]

04 LAN Card

01 [COMRegister1]

[COMInterrupt1]

03 Internal Loop back

04 External Loop back

[COMInLoopback1]

[COMExLoopback1]

[COMFIFO1]

07 Stop Bits Check

08 Word Length Check

01 Device ID Detection

02 Vendor ID Detection

[COMParity1]

[COMStopbit1]

[COMWordlength1]

[IrMaster]

[IrSlave]

[DeviceID]

[VendorID]

26

Satellite M20 Maintenance Manual

3.4 Subtests 3 Diagnostic Programs

03 Mac Address Detection

02 Keyboard Data Line [KBDataLn]

03 [KBLed]

04 Keyboard Clock Line

[MAC Address]

[KBMap]

[KBClokLn]

[MSPS2]

[MSStick]

Satellite M20 Maintenance Manual 27

3 Diagnostic Programs 3.5 System Test

Move arrow keys and press the Space key to select CPU test item from Service

Diagnostic menu, then highlight CPU and press the Enter to run this test item.

Subtest 01 CPU

1. Basic Functionality Test

This test item is to check whether the CPU works normally through math and logic calculation including verifying the general registers, math registers and logic registers.

2. CPU Speed

This test item is to detect the work frequency of the current CPU. User should change the parameters setting in the following window before the test:

28

CPU Speed Comparison--Whether you want to make a comparison of the

CPU speed with the value set in ‘Expected CPU Speed’, you should choose

‘Yes’; otherwise, ‘No’.

Satellite M20 Maintenance Manual

3.5 System Test 3 Diagnostic Programs

Expected CPU Speed--Specify the expected CPU Speed value you want for further comparison.

3. Coprocessor

NPU Basic Functions Test

This test item is to check whether the precision of the numeric processor in the float calculation is up to the IEEE standards.

NPU Interrupt Test

This test item is to check whether NPU transfers the abnormal Interrupt program correctly by forcing an abnormal float.

4. CPU Information

This test item is used for getting & showing CPU Information. It will be displayed as follows:

5. CPU Protected Mode Test

This test item is to check whether CPU protected mode instruction works normally.

6. Speedstep

Intel Speedstep technology is supported by the mobile CPU of Pentium III or above which allows a mobile PC user to operate at a higher frequency when plugged into a wall outlet and automatically switch to a lower power and frequency when running on battery, conserving battery life.

Satellite M20 Maintenance Manual 29

3 Diagnostic Programs 3.5 System Test

This test item is to check whether the CPU supports Speedstep function according to the change of the CPU work frequency in Maximum

Performance mode and Battery Optimized mode.

Below is the parameter dialog window of CPU Speedstep test item:

Speed Change Comparison—When ‘No’ is chosen, system only reports the CPU speed at Maximum Performance mode and Battery Optimized mode. Otherwise, it will compare the CPU speed at Maximum Performance mode with that at Battery Optimized mode. Whether the difference between the two speeds is greater than the value specified in ‘Expected

Minimum Speed Change’, system will report ‘PASS’, otherwise ‘FAIL’.

Expected Minimum Speed Change—Specify the minimum change range of CPU speeds under AC and DC power supply.

7. MMX

The test item is to confirm whether the CPU supports MMX instructions.

Subtest 02 Board

1. DMA Controller

This test item is to check whether the DMA controller works normally.

2. Interval Timer

This test item is to check whether the Interval Timer (18.2Hz, 55ms) works normally.

3. Clock/Calendar

This test item is to check whether the system clock/calendar works normally.

4. Speaker

30

Satellite M20 Maintenance Manual

3.5 System Test 3 Diagnostic Programs

This test item is to check whether the speaker currently used works normally. It requires the user respond to the test instructions.

5. PCI System

This test item is to check whether the bus number, device number and function number in PCI bus are valid.

6. Plug and Play

This test item is to check:

1. Whether the current system supports Plug-n-Play,

2. Whether there is an ESCD (Extended System Configuration Data) in the BIOS

3. Whether there is PCI-to-ISA bridge in the system

4. Whether there is PCI bus in the system.

7. ACPI Test

ACPI test includes two sub-items as below:

System Address Map Test: Check the correctness of ACPI system memory map, and whether its mapping scope is within real memory.

ACPI Table Test: Check the correctness of ACPI relative configuration tables in the current system.

Subtest 03 FAN Speed Test

This test item is to check whether the fan currently used works normally in the different speeds of stop, slow, middle and fast.

Satellite M20 Maintenance Manual 31

3 Diagnostic Programs 3.6 Memory Test

This test module is to check whether the memory chip works normally.

Subtest 01 BIOS ROM

This test item is to check the validity of BIOS ROM that includes two sub-items --

ROM Read and ROM Write Protection. ROM Read is to check whether BIOS

ROM could be correctly read out, ROM Write Protect is to check whether BIOS

ROM is write-protected.

Subtest 02 Pattern

This test item is to check whether the system memory includes base memory and extended memory that could be accessed correctly through writing and reading with a series of designed pattern data. Below is the parameter setting dialog window.

32

Option: Choose the memory part to be tested – Base Memory Test or

Extended Memory Test;

Extended Memory Start Address (MB) & Extended Memory End

Address (MB): Set the range of extended memory that is to be tested, the test coverage would be based on the setting and the value in ‘Percent (%) mentioned at below;

Pattern Size: Choose the pattern size – BYTE, WORD, DWORD or ALL;

Percent (%): Choose the percentage of the defined range of the memory to be tested;

Satellite M20 Maintenance Manual

3.6 Memory Test 3 Diagnostic Programs

1. Bit Stuck High Test

Data pattern: Every bit is ‘1’ (Each bit is high)

2. Bit Stuck Low Test

Data pattern: Every bit is ‘0'(Each bit is low);

3. Checker Board Test

Data pattern: Lo-byte and hi-byte are composed with 0101(0x5) and 1010

(0xA);

4. CAS Line Test

Data pattern: Lo-byte and hi-byte are composed with 0000 (0x0) and

1111(0xF);

5. Incremental Test

Data pattern: A series of increasing data from 0 by adding 1 each time;

6. Decrement Test

Data Pattern: A series of decreasing data from the maximum (e.g. 0xFFFF) by subtracting 1 each time;

7. Incremental / Decrement Test

Data Pattern is a series of data whose low byte is increasing data from 0x00 and high byte is decreasing data from 0xFF.

Subtest 03 Extended Pattern

In addition to the above pattern test with the memory, there are Read/Write Cycle test and Read Cycle Test for the extended memory.

Below is the parameter dialog window of the extended pattern test.

Satellite M20 Maintenance Manual 33

3 Diagnostic Programs 3.6 Memory Test

Extended Memory Start Address and Extended Memory End

Address (MB): Set the range of extended memory that is to be tested.

The test coverage will base on the value setting in ‘Percent (%)’ mentioned at below.

Percent (%): Choose the percentage of the defined range of the memory to be tested.

1. Write/Read Cycle Test

Test by using both read and write instructions.

2. Read Cycle Test

Test by using read instructions.

Subtest 04 Walking 1’s Test

The test item is to make sure that there is no short circuitry issue in memory chip.

The parameter dialog window is the same as that in ‘Subtest 02 Pattern’.

Subtest 05 Walking 0’s Test

The test item is to make sure that there is no open circuitry issue in memory chip.

The parameter dialog window is the same as that in ‘Subtest 02 Pattern’.

Subtest 06 Memory Address

This test item is to check short and open issue on memory address lines.

Subtest 07 Refresh Test

This test item is to check whether the memory refresh works normally. The parameter dialog window is as follows:

Subtest 08 Cache Memory

The test item is to check whether the CPU internal cache memory could be accessed correctly.

34

Satellite M20 Maintenance Manual

3.6 Memory Test 3 Diagnostic Programs

Subtest 09 Random Memory

Random Memory test includes the following two test items: Randomize Test and

Random Incremental Read/Write Test. The parameter dialog window is the same as that in ‘Subtest 03 Extended Pattern’.

1. Randomize Test

This test item is to check whether the memory could be correctly accessed with randomized data and randomized memory address.

2. Random Increment Read/Write

This test item is to check whether the memory could be correctly accessed with randomized memory address and a series of incremental data.

Subtest 10 Data Bus Test

This test item is to check whether the data bus works normally.

Subtest 11 Memory Speed Test

This test item is to check the data transferring rate for the cache memory and the system memory.

Satellite M20 Maintenance Manual 35

3 Diagnostic Programs 3.7 Storage

3.7 Storage

Subtest 01 HDD

This test item runs on IDE hard disks. It checks the functions and performance of IDE hard disk.

In order to protect user’s HDD data, the password must be verified when the HDD test is being done. The screen is as follows:

Passwordhard disk

1. Sequential/Random R/W

This test item is to check the HDD’s Read/Write function through data writing and reading to HDD.

This test item needs user to submit the parameters:

36

LBA Start, LBA End--Specify the start and end byte in LBA

(Large Block Address);

Retry—Specify the maximum retrying times whether the operation fails;

Percent—Specify the coverage rate in percentage of the total disk;

Test Mode—Choose test mode from the following options:

Satellite M20 Maintenance Manual

3.7 Storage 3 Diagnostic Programs

(1) Read & Write –Write data on the disk, then read it out and compare the two value;

(2) Read Verify —Read data only;

(3) Unprotected Write—Write data on the disk without backup original data.

Option—Select sequential test or random test

2. Sequential/Random Seek

The test item is to check the correctness of the HDD’s sector seeking function.

This test item involves the following parameters:

LBA Start, LBA End-- specify start and finish byte in LBA(Large

Block Address);

Retry-- Specify the maximum retrying times whether the operation fails;

Option-- Select sequential test or random test;

Percent-- Specify the coverage rate in percentage of the total disk.

3. Performance

Check the HDD’s seeking speed and transferring the data rate.

This test item involves the following parameter:

Satellite M20 Maintenance Manual 37

3 Diagnostic Programs 3.7 Storage

Retry--Specify the maximum retrying times whether the operation fails.

4. Controller Check

Check the HDD controller’s status, including HDD interrupt and unexpected interrupt.

5. Diagnostic Read/Write

This test item is a quick test to verify whether the HDD could be correctly accessed and the user could specify the percentage in the below dialog.

Percent (1-100)-- Specify the coverage rate in percentage of the total disk.

6. SMART Test

SMART stands for Self-Monitoring, Analysis and Reporting Technology.

SMART test will compare the attribute values with the threshold value in the

HDD’s controller to confirm whether there is any failure in the HDD

Subtest 02 CDROM

The CDROM test runs on IDE CDROM/DVD-ROM & CD-RW, it will check the

CDROM driver’s functionality and performance.

1. Controller Test

Check the CDROM controller’s status.

2. Data Transfer Rate

Check the data transfer rate of the CDROM drive. It will read data from the

CDROM disc and calculate the data transfer rate. This test needs a data CD.

38

Satellite M20 Maintenance Manual

3.7 Storage 3 Diagnostic Programs

3. Audio CD Play

This test item is to check whether the audio play normally.

It needs an audio CD.

Start/End Track Number-- Specify the Track range to be played;

Time (1-20) -- Specify the time each track to be played.

4. Data CD Butterfly Seek

Check the seek function of the CDROM drive. It will perform a serial of seeking operations. First locate the minimum LBA address, then the maximum, the subminimum, the sub-maximum and meet at center point. This test needs a data CD.

5. Data CD Random Seek

Check the random seek function of CDROM drive. Random access will reflect the performance of the heads’ random movement and seek. It tests 1000 times.

6. Data CD Sequence Seek

Check the sequential seek function of CDROM drive. Perform location test to

CD-RW under LBA mode with the location address increasing in sequence.

7. CDRW Write Test

Check the write function of CDRW drive. The CDRW disk must be formatted with Direct CD format.

8. Tray Eject Test

Check the eject function of the CDROM. It will eject the CDROM and ask the user to confirm if operation success.

Satellite M20 Maintenance Manual 39

3 Diagnostic Programs 3.8 Video

3.8 Video

This test item tests the video by

1. displaying the figures in different graphic mode

2. displaying the property and color of the characters in different text mode.

User will judge whether the display is correct to confirm whether each video mode works normally. It checks whether the video memory works normally by writing data into the video memory, then reading it out and comparing the two value.

Subtest 01 Text Mode

1. Character Test

Tests two types of font patterns.

Font 9*14

Font 9*16

It requires the user to check whether all characters of each font type displayed correctly by answering the questions prompted on screen. It will be displayed as follows:.

40

2. Text Attribute

This test item is to check whether the text attribute of normal, hi-intensity, inverse, and blinking in VGA text mode could be correctly displayed on the screen.

Satellite M20 Maintenance Manual

3.8 Video 3 Diagnostic Programs

It would display the below texts of the different attributes in the screen

1. Text in normal attribute;

2. Text in blinking normal attribute;

3. Text in inverse attribute;

4. Text in blinking inverse attribute;

5. Text in hi-intensity attribute;

6. Text in blinking hi-intensity attribute;

Users need to check whether all texts displayed correctly in the above six attributes and key in the answer ‘Y’ or ‘N’ to the prompts ‘Is this display OK?

[Y/N]’.

Below is the test screen of Text Attribute.

3. Text Page Selection

This test item is to check whether the video memory could be correctly written and read in VGA text mode. Based on the comparison of written data with read data, the program would report PASS or FAIL.

Satellite M20 Maintenance Manual 41

3 Diagnostic Programs 3.8 Video

4. Text Color

This test item is to check whether all 16 colors foreground and all 8 colors background works normally in VGA text mode.

The bit4-6 of the attribute byte of a character defines 8 background colors (black, blue, green, cyan, red, brown, magenta, and light gray), and the bit0-3 defines 16 foreground colors (dark gray, light blue, light green, light cyan, light red, light magenta, yellow, and white besides the above 8 colors).

In the test, user is required to respond based on the instruction in the screen.

42

5. 80 * 25 Text Mode

This test item is to check whether 80*25 Text Mode works normally.

In the test, user is required to respond based on the instruction in the screen.

Satellite M20 Maintenance Manual

3.8 Video 3 Diagnostic Programs

Subtest 02 640 * 480 VGA Mode

This test item is to check whether 680*480 VGA Text mode works normally.

In the test, user is required to respond based on the instruction in the screen.

Subtest 03 VESA Video Modes

This test item is to check whether all the video modes supported by the video card works normally.

In the test, user is required to respond following the instruction in the screen.

1. 640X480 Video Modes Test

Satellite M20 Maintenance Manual 43

3 Diagnostic Programs 3.8 Video

2. 800X600 Video Modes Test

3. 1024X768 Video Modes Test

4. 1280 x1024 Video Modes Test

5. 1400 X1050 Video Modes Test

6. 1600 X1200 Video Modes Test

Subtest 04 VESA Video Memory

This test item is to check whether VESA video memory could be correctly accessed (write data & read data). Below is the test item’s parameter dialog window:

Subtest 05 AGP Test

This test item is to report the system’s Accelerated Graphics Port status and check whether AGP registers works normally.

44

Satellite M20 Maintenance Manual

3.8 Video 3 Diagnostic Programs

Subtest 06 LCD Panel Test

This test item is to check whether there is any fault in its resolution by displaying the RGB gradient color screens.

Subtest 07 Register Test

This test item is to check whether the registers of the video adapter works normally.

Subtest 08 Color Purity Test

This test item is to check whether the system (the video adapter and the display) could display the purity color of red, green, blue, black and white.

In the test, user is required to respond based on the instruction in the screen.

Subtest 9 Direct Color Test

This test item is to check the video adapter’s composing ability of direct color in high and true color mode.

In the test, user is required to respond based on the instruction in the screen.

Satellite M20 Maintenance Manual 45

3 Diagnostic Programs 3.8 Video

Subtest 10 DAC/Palette Address

This test item is to check the function of DAC registers and Palette registers.

In the test, user is required to respond based on the instruction in the screen.

Subtest 11 BitBlt Engine Test

This test item is to check whether the BitBlt engine works normally.

BitBlt is the abbreviation of ‘Bit Block Translate’, that means the copy of data block for 3 types, from video memory to video memory, from video memory to system memory, and from system memory to video memory.

46

Satellite M20 Maintenance Manual

3.8 Video 3 Diagnostic Programs

What should be done is to write the data of the type of BitBLT operation and the location of BitBLT source area and destination area into the BitBLT registers, and all those operations will be completed automatically by BitBLT engine with minimum CPU intervention.

Satellite M20 Maintenance Manual 47

3 Diagnostic Programs 3.9 Communication

Subtest 01 LPT

This test item is to check whether there is open or short circuit issue in the external pins by looping back the external pins, controlling the voltage of each data pin, control pin and status pin.

The test requires an external connector to insert into the tested LPT port. Below is the connector's description.

Fixture Description:

(9) + PD7

(8) + PD6

(7) + PD5

(6) + PD4

(5) + PD3

(4) + PD2

(3) + PD1

(2) +PD0

Note: (1)~(17) -------- Pin number

PD0~ PD7--------Data Line

(15) -ERROR

(14) -AUTFD

(13)

(16) -PINIT

(1) - STROBE

(10) - ACK

(12) + PE

(17) - SLIN

(11)+ BUSY

Status Line -------- –ERROR(S3), +SELECT(S4), –ACK(S6), +PE(S5), +BUSY(S7)

Control Line-------- –AUTFD(C1), –PINIT(C2), -STROBE(C0), –SLIN(C3)

1. Register Check

Check whether the data register and control register works normally.

2. IRQ Check

Check whether LPT interrupt works normally.

3. External Loop back

Check whether there is open or short circuit issue.

4. ECP Mode

48

Satellite M20 Maintenance Manual

3.9 Communication 3 Diagnostic Programs

Check whether it supports ECP (Extended Capabilities Port) feature.

5. Printer Check

Check whether it could connect to a standard LPT printer and print out the text correctly. Here are some samples of LPT printers.

HP DeskJet 200

EPSON STYLUS COLOR 440

EPSON STYLUS COLOR 460

EPSON STYLUS C41SX

EPSON EPL-5700 (LaserJet Printer)

HP Laser jet 6P (Laser Jet Printer)

Subtest 02 COM

This test item shorts circuits in the external pins, to unite data sending and data receiving as self-shake and self-circle. Below is the external connector’s description:

Fixture Status

1

(PIN2) RD

(PIN7) RTS

(PIN4) DTR

1. Register Check

Satellite M20 Maintenance Manual

6

2

7

3

8

4 5

9

(PIN3) TD

(PIN8) CTS

(PIN1) DCD

(PIN6) DSR

(PIN9) RI

49

3 Diagnostic Programs 3.9 Communication

Check whether COM port register could be correctly accessed and works normally.

2. IRQ Check

Check the COM port’s IRQ function.

Below is the parameter dialog window of the IRQ Check.

Parity: Choose the parity mode;

Stop Bit: Choose the stop bit;

Word Size: Choose the bit number in one word;

3. Internal Loop back

This test item is to check whether the COM port could correctly send and receive data at different transferring rate through internal cycle system.

Below is the parameter dialog window.

50

Parity: Choose the parity mode;

Satellite M20 Maintenance Manual

3.9 Communication 3 Diagnostic Programs

Stop Bit: Choose the stop bit;

Word Size: Choose the bit number in one word;

Baud Start/End: Select the start baud rate and end baud rate.All the baud rates between the start and end baud rate would be tested in the test.

4. External Loop back

This test item is to check whether there is no open circuit issue in the COM port.

The parameter dialog window is the same as that in ‘3. Internal Loop back’.

5. FIFO Test

Check whether FIFO works normally.

The parameter dialog window is the same as that in ‘2. IRQ Check’.

6. Parity Check

Verify whether the parity check in the COM port works normally.

7. Stop Bits Check

Verify whether the stop bits check in the COM port works normally.

8. Word Length Check

Verify whether the word length check in the COM port works normally.

Subtest 03 IrDA

This test item is divided into Fast IR (FIR) and Slow IR (SIR). FIR supports the transfer rates of 0.576Mbps, 1.152Mbps and 4.000Mbps; SIR supports the transfer rates of 2400bps, 4800bps, 9600bps, 19200bps, 38400bps, 57600bps, and 115200bps.

The unit under testing (UUT) is called Slave, that requires a unit whose IrDA works normally(that is called Master) for transferring data between Slave and Master. Below is the parameter dialog window of IrDA test.

Satellite M20 Maintenance Manual 51

3 Diagnostic Programs 3.9 Communication

Connect Timeout: Define the time that slave connecting to master (in seconds);

Test Timeout: Define the time that testing each transfer rate(in seconds);

SIR Test: Choose the transfer rates to be checked in Slow IR;

FIR Test: Choose the transfer rates to be checked in Fast IR.

Below are the operation steps:

Prepare a Master whose IrDA works normally, then run the test item in

‘Comm/IrMaster’ under Diagnostics menu; The master stays here to wait for slave requesting.

Prepare a slave. User should choose the test item ‘Comm/IrSlave’ and set parameters.

Below is the Slave Testing window.

52

Satellite M20 Maintenance Manual

3.9 Communication

Below is the Master Testing window:

3 Diagnostic Programs

Subtest 04 LAN Card

This test item is to check whether the module can detect the existence of the network card and display its related information.

1. Device ID Detection

Detect the device ID of the network card.

2. Vendor ID Detection

Detect the vendor ID of the network card.

3. MAC Address Detection

Detect the MAC address of the network card.

Satellite M20 Maintenance Manual 53

3 Diagnostic Programs

3.10 Peripheral

Subtest 01 Keyboard

This test item is to check whether the keyboard works normally.

1. Keyboard Map

3.10 Peripheral

54

This test item is to check whether each key in the keyboard works normally.

It requires user to press the key and check whether the key in the screen has been changed in color. User can terminate test by typing ‘E’ ,‘N’ ,‘D’.

It should be noted that ‘Fn’ key must be tested by pressing together with ‘Enter’ key (while holding down ‘Fn’ key, press down ‘Enter’ key).

When the user has checked all the keys and all the keys in the screen have been changed in color, the diagnostics program would automatically ends the test and reports the pass information.

Whether keyboard test failure, program can terminated the test and report the fail information when it is time to timeout.

2. Keyboard Clock Line Test

Check whether the keyboard clock line works normally

3. Keyboard data Line Test

Check whether the keyboard data line works normally

Satellite M20 Maintenance Manual

3.10 Peripheral 3 Diagnostic Programs

4. Keyboard LED Test

Check whether the following LED on the unit works normally. It requires user to respond with the prompt instruction.

1: AC Power LED

2: DC Power LED

3: Battery LED

4: HDD access LED

5: FDD LED

6: CAP/Number/Scroll LED

LED

Orange No Yes Yes No Yes No

Green Yes Yes Yes Yes No Yes

Subtest 02 Mouse Test

Check whether the point devices can work normally.

1. PS/2 Mouse

To test PS/2 mouse’s functionality, user should insert a PS/2 mouse before booting the unit; At the below screen of PS/2 mouse test, user can press the left button, right button, and move the mouse to verify its functions.

Satellite M20 Maintenance Manual 55

3 Diagnostic Programs 3.10 Peripheral

2. Stick Point

This test item needs to be done by hand. When it draws a cursor on the screen, user needs to move the mouse and watch whether the cursor moves to the correct direction with the movement of the mouse.

56

Satellite M20 Maintenance Manual

3.11Error Codes and Description 3 Diagnostic Programs

3.11 Error Codes and description

The format of ‘Error Code’ is ‘ddxxee’, and ‘dd’ is the device ID (1~2 chars), ‘xx’ is test function

ID of device (2 chars), ‘ee’ is the error code of device (2 chars); the range of error code is from 01 to 99 in each device (the common error codes in all device are set to 99 and spanned).

Device

Error

Code

Description Cause Action

94 Interactive Mode Needed

The test is not under interactive mode.

Check whether the interactive test mode is adopted.

The CPU General Function register is damaged.

The CPU Arithmetic Register is damaged.

Replace the CPU.

As above.

The CPU Logic Register is damaged.

The CPU Type is not supportable.

The CPU speed differs from the expected value.

The NPU arithmetic unit is damaged.

The NPU is damaged.

Information of the CPU can not be acquired.

As above.

Check whether the CPU is Intel

CPU.

Check the CPU speed and the set expected speed.

Replace the CPU.

As above.

Check whether the CPU is Intel

CPU.

Replace the CPU.

The CPU does not support

Speedstep.

Check whether the power change mode is correct.

The power mode is not correctly changed.

As above.

The CPU frequency can not alternate normally with the change of power mode.

The CPU MMX register is damaged.

Confirm with the same type CPU.

Replace the CPU.

Satellite M20 Maintenance Manual 57

3 Diagnostic Programs 3.11Error Codes and Description

12 Data Bus Error

The ROM BIOS has Physical problems.

The ROM BIOS has Physical problems.

Test this unit on multiple machines.

As above.

The test pattern read out from the base memory is different from Test this memory chip on the one that has been written in this address. multiple machines.

The test pattern read out from the extension memory is different from the one that has been

As above. written in this address.

Wrong parameters setup.

Interference between different address channels.

Errors with the timer chip.

Check and reset the parameters.

Test this memory chip on multiple machines.

As above.

The acquired refreshing frequency is out of the estimated range.

Reset the estimated range.

The pattern read out from the L1

Cache is different from the one that has been written in the same address.

Test this unit on multiple machines.

Interference between different data channels.

As above.

Failure during the transfer speed test.

As above.

DMA channel can not transfer data normally.

Repeat multiple times. Whether there is always the same error, replace the board.

The difference between the actual precision of the interval timer and its theory value is out of the permitted range. The timer counts imprecisely.

As above.

The frequency is beyond the standard.

The frequency is below the standard.

As above.

As above.

58

Satellite M20 Maintenance Manual

3.11Error Codes and Description 3 Diagnostic Programs

R/W errors with the RTC refreshing interrupt controller.

As above.

The PC speaker's sound source --

-counter/timer 8253 can not produce corresponding timing signal.

As above.

The Speaker can not sound normally.

No PCI.

PCI test fails.

Check the volume tuner.

Wrong PCI configuration.

Check the board.

As above.

As above.

Check PCI configuration on main board or PCI Device configuration.

Repeat multiple times. If there is always the same error, replace the board.

ESCD errors.

No RSDP is found.

As above.

Repeat multiple times. If there is always the same error, replace the board.

53 Errors with the ACPI table test. As above.

01 Text Attribute Error

01 Fan Slow Speed Test Fail The fan slow speed test fails. Check the FAN connection.

02 Fan Stop Test Fail The fan stop test fails. As above.

03 Fan Fast Speed Test Fail The fan fast speed test fails. As above.

Physical problems with the video card.

Check whether there is any physical problem with the video card.

02 Text Page Selection Error As above. As above.

03 Text Color Error

04 Text Mode Error

05 VGA Mode Error

As above. As above.

As above.

1) Physical problems with the video card.

2) Physical problems with the monitor.

As above.

1) Check whether there is any physical problem with the video card.

2) Check whether there is any

Satellite M20 Maintenance Manual 59

3 Diagnostic Programs 3.11Error Codes and Description

physical problem with the monitor.

06 Character Test Error

Physical problems with the video card.

Check whether there is any physical problem with the video card.

As above. As above.

08 Color Purity Test Error

Physical problems with the video card or the monitor.

Check whether there is any physical problem with the video card or the monitor.

VESA Mode 15bits Direct

As above. As above.

VESA Mode 16bits Direct

As above.

VESA Mode 24bits Direct

As above.

As above.

As above.

Get the PCX graphics map Failure in getting PCX graphics map.

13 Bitblt Engine Test Error

Check for the PCX graphics map.

Physical problems with the video card.

Check and see whether the video card has any physical problem.

As above. As above.

15 VESA VRAM Test Error

16 AGP Test Error

Physical problems with the video card or the monitor.

Check whether there is any physical problem with the video card or the monitor.

AGP configuration register errors.

Check and see whether the AGP video card has any physical problem.

17 LCD Panel Test Error Lower LCD color resolution. Replace the LCD.

19 Register Test Error

20 Adapter not support DDC

Physical problems with the video card.

Check and see whether the video card has any physical problem.

The video card doesn't support

DDC.

21 Monitor not support DDC

The monitor doesn't support

DDC.

26 8bits Video Mode Test

1) Physical problems with the video card.

2) Physical problems with the monitor.

As above.

1) Check and see whether the video card has any physical problem.

2) Check and see whether the monitor has any physical problem.

As above.

60

Satellite M20 Maintenance Manual

3.11Error Codes and Description 3 Diagnostic Programs

Error

01 Audio Play Fail

02 Record Fail

01 Data Register Error

02 Control Register Error

04 FIFO Test Error

As above.

As above.

As above.

As above.

As above.

As above.

As above.

Cannot play music.

As above.

Check the Audio connection, replace the external fixture, and repeat the test.

As above. Cannot record.

The data register can not perform Check the external fixture and normally. BIOS setup, and repeat the test.

The control register can not perform normally.

As above.

LPT does not support ECP mode.

Check the BIOS setup, and repeat the test.

LPT cannot perform normally under FIF0 TEST mode (ECP internal mode).

As above.

05 IRQ Active Error

1.LPT IRQ cannot be activated.

2. The external fixture does not match with the chosen version.

Check the external fixture and

BIOS setup, and repeat the test.

06 No Fixture On The Port No external fixtures on LPT port. As above.

11 Toshiba Fixture Error

12 No Paper

1. There is OC (Open Circuit) or

SC (Short Circuit) on the LPT port CTR/STR.2. The external fixture does not match with the chosen version.

Check the external fixture and the port pins, and repeat the test.

As above.

As above.

No papers in the printer.

As above.

As above.

Check for papers in the printer.

Satellite M20 Maintenance Manual 61

3 Diagnostic Programs 3.11Error Codes and Description

13 OFF Line

14 Power OFF

15 No Printer Found.

01 DLL Test Error

02 DLM Test Error

03 LCR Test Error

No papers in the printer.

No papers in the printer.

Unrecognizable printer type.

Line problems or other with the printer.

Check and see whether the printer is connected to the computer.

Check and see whether the printer is supplied with power.

Test with another type of printer.

Check for the printer on LPT, make sure it's correctly connected.

The DLL register of COM PORT 1) Try with other test software. does not perform normally. 2) Replace the SUPER IO chip.

The DLM register of COM

PORT does not perform normally.

As above.

The LCR register of COM PORT does not perform normally.

As above.

04 IER Test Error

The IER register of COM PORT does not perform normally.

As above.

05 MCR Test Error

08 IRQ3 Not Happen Error

09 IRQ4 Not Happen Error

The MCR register of COM

PORT does not perform normally.

As above.

COM PORT data transfer out of time.

As above.

COM PORT data receive out of time.

1) Check for the external fixture on COM PORT.

2) Try with other test software.

3) Replace the SUPPER IO chip.

The COM PORT interrupt occupying IRQ3 can not be recognized by the system.

The COM PORT interrupt occupying IRQ4 can not be recognized by the system.

The Transmit Buffer Empty

Interrupt can not be invoked.

1) Try with other test software.

2) Replace the SUPER IO.

As above.

As above.

The Data Receive Ready

Interrupt can not be invoked.

1) Check for the external fixture on the COM PORT;

2) Try with other test software;

3) Replace the SUPPER IO chip.

62

Satellite M20 Maintenance Manual

3.11Error Codes and Description 3 Diagnostic Programs

The Modem Status Change

Interrupt cannot be invoked.

As above.

1) Whether the COM PORT does

1) UART version is below 16550 and does not support FIFO.

2) COM PORT FIFO does not perform normally. not support FIFO, this test should be ignored.

2) Check for the external fixture on the COM PORT;

3) Try with other test software;

4) Replace the SUPPER IO chip.

14 FIFO Cannot Enable Error As above. As above.

As above. As above.

17 Data Receive Error

The Data Receive Check of

COM PORT does not perform normally.

1) Check for the external fixture on the COM PORT;

2) Try with other test software;

3) Replace the SUPPER IO chip.

The Data Receive of COM

PORT does not perform normally.

1) Try with other test software;

2) Replace the SUPPER IO chip.

There is OC with the RTS-CTS pins.

1) Check whether the external fixture of correct version is connected.

2) Try with other test software;

3) Replace the SUPPER IO chip.

There is OC with the DTR-DSR pins.

As above.

Don’t Scan PCI device Don’t support PCI BIOS

PCI Ethernet card not test

Intel PCI Ethernet card test

Don’t find Net card Please insert Net cad

Don’t found Net Card, This Card can’t be Read MAC by this method

Please update netcard or use other method

Keyboard Map & Stroke Test fails.

LED Flash test fails.

Check the KBD connection and repeat the test.

As above.

Clock Line Test fails. As above.

Satellite M20 Maintenance Manual 63

3 Diagnostic Programs 3.11Error Codes and Description

64

Data Line Test fails. As above.

04 PS2 Mouse Test Fail

Stick Point Test Fail

01 2400BPS Test Error

PS2 Mouse Test fails.

Stick Point Test Fail

Replace the mouse.

Check the mouse connection and repeat the test.

Failure with the infrared port or the configuration program is not executed.

Rerun the configuration program or check the infrared port.

02 4800BPS Test Error

03 9600BPS Test Error

04 19200BPS Test Error

As above.

As above.

As above.

05 38400BPS Test Error

06 57600BPS Test Error

As above.

As above.

07 115200BPS Test Error As above.

08 0.576MBPS Test Error As above.

09 1.152MBPS Test Error As above.

10 4.000MBPS Test Error As above.

11 Connect time out

As above.

As above.

As above.

As above.

As above.

As above.

As above.

As above.

As above.

Failure with the infrared port or the configuration program is not executed.

Rerun the configuration program or check the infrared port. Check the master.

01 Get Parameter Fail !

02 Write Pattern Error

03 Data Compare Error

04 Read Verify Error

Wrong test parameters are input by user.

HD is damaged.

HD is damaged.

HD is damaged.

HD is damaged.

Reinput the correct parameters.

Send the HD for repair.

As above.

As above.

As above.

The HD controller is damaged. As above.

Disk Controller Test

The HD controller is damaged. As above.

Failed

The HD controller is damaged. As above.

Disk dos not support SMART

Disk read attribute threshold error

Change HD which supported

SMART and test again

Send the HD for repair.

Satellite M20 Maintenance Manual

3.11Error Codes and Description 3 Diagnostic Programs

The Disk in CDROM is

Disk read attribute value error As above.

Disk SMART attribute value error

As above.

No disk is found in the CD-

ROM.

The disk in the CD-ROM is not

Data Disk.

Insert a disk into the CD-ROM.

Insert a DATA CD.

Send the CD-ROM for repair.

ROM.

Either the disk or the CD-ROM is damaged.

The disk in the CD-ROM is not

Audio-CD.

Errors with the Audio-CD playing.

Either the disk or the CD-ROM is damaged.

The Disk in CDROM is not CD-

RW

Wrong CD-ROM drive.

Replace the disk or send the CD-

ROM for repair.

Insert an Audio-CD.

Replace the Audio-CD or send the CD-ROM for repair.

Replace the disk or send the CD-

ROM for repair.

Replace a CD-RW disk with

Direct CD format or send the CD-

ROM for repair.

Exit from the wrong drive.

Satellite M20 Maintenance Manual 65

3.12 Quick Test Item List

3.12 Quick Test Item List

CPU Basic Functionality

NPU Basic Functions

Bit Stuck High Test

Bit Stuck Low Test

Clock / Calendar

Video

HDD

LAN Card

1024X768 Video Modes Test

VESA 1024x768x64K Mode

VESA 1024x768x32bit Mode

VESA Video Memory

Direct Color Test

Sequential/Random R/W

Device ID Detection

Vendor ID Detection

COM

External Loop back

IRQ Check

Internal Loop back

External Loop back

3 Diagnostic Programs

10%

10%

5%

25%

Fixture

Fixture

Fixture

Fixture

Fixture

Satellite M20 Maintenance Manual i

Chapter 4

Replacement Procedures

4 Replacement Procedures

4-ii Satellite M20 Maintenance Manual

4 Replacement Procedures

Chapter 4 Contents

4.1 General....................................................................................................................... 4-1

Safety Precautions................................................................................................ 4-2

Before You Begin ................................................................................................ 4-4

Disassembly Procedures ...................................................................................... 4-5

Assembly Procedures........................................................................................... 4-5

Tools and Equipment ........................................................................................... 4-6

Screw Tightening Torque .................................................................................... 4-6

Colors of Screw Shanks ....................................................................................... 4-7

Symbols of Screws on the Computer Body ......................................................... 4-7

Symbol examples ................................................................................................. 4-7

Removing the Battery Pack ................................................................................. 4-8

Installing the Battery Pack................................................................................. 4-10

Removing the Optional PC Card ....................................................................... 4-10

Installing the Optional PC Card......................................................................... 4-11

Removing the Optional Memory ....................................................................... 4-12

Installing the Optional Memory......................................................................... 4-14

Removing the MDC Card .................................................................................. 4-15

Installing the MDC Card.................................................................................... 4-16

4.2 HDD......................................................................................................................... 4-17

Removing the HDD ........................................................................................... 4-17

Installing the HDD............................................................................................. 4-19

4.3 Selectable Bay Modules........................................................................................... 4-20

Removing the Selectable Bay Module............................................................... 4-20

Installing the Selectable Bay Module ................................................................ 4-21

Disassembling the DVD-ROM Drive................................................................ 4-22

Assembling the DVD-ROM Drive .................................................................... 4-23

Removing the Switch Cover .............................................................................. 4-24

Satellite M20 Maintenance Manual 4-iii

4 Replacement Procedures

Install the Switch Cover..................................................................................... 4-25

4.5 Keyboard.................................................................................................................. 4-26

Removing the Keyboard .................................................................................... 4-26

Installing the Keyboard...................................................................................... 4-28

4.6 Wireless LAN Card.................................................................................................. 4-29

Removing the Wireless LAN Card .................................................................... 4-29

Installing the Wireless LAN Card ..................................................................... 4-30

4.7 Speakers ................................................................................................................... 4-31

Removing the Speakers...................................................................................... 4-31

Installing the Speakers ....................................................................................... 4-32

Removing the Display Mask.............................................................................. 4-33

Installing the Display Mask ............................................................................... 4-36

4.9 FL Inverter Board .................................................................................................... 4-37

Removing the FL Inverter Board....................................................................... 4-38

Installing the FL Inverter Board ........................................................................ 4-40

Removing the 14.1-inch LCD Module .............................................................. 4-39

Installing the 14.1-inch LCD Module................................................................ 4-42

Removing the Top Cover................................................................................... 4-43

Installing the Top Cover .................................................................................... 4-45

Removing the RTC Battery ............................................................................... 4-48

Installing the RTC Battery................................................................................. 4-48

4.13 Power Supply Board ................................................................................................ 4-49

Removing the Power Supply Board................................................................... 4-49

Installing the Power Supply Board .................................................................... 4-49

Removing the Sound Board ............................................................................... 4-50

Installing the Sound Board ................................................................................ 4-51

4-iv Satellite M20 Maintenance Manual

4 Replacement Procedures

Removing the Cooling Module.......................................................................... 4-52

Installing the Cooling Module ........................................................................... 4-53

4.16 CPU.......................................................................................................................... 4-55

Removing the CPU ............................................................................................ 4-55

Installing the CPU.............................................................................................. 4-56

Removing the System Board ............................................................................. 4-58

Installing the System Board............................................................................... 4-59

Removing the Membrane Switch....................................................................... 4-60

Installing the Membrane Switch ........................................................................ 4-60

4.19 Samsung 14.1-inch FL ............................................................................................. 4-61

Removing the Samsung 14.1-inch FL tube........................................................ 4-61

Installing the Samsung 14.1-inch FL tube ......................................................... 4-68

4.20 Toshiba 14.1-inch FL............................................................................................... 4-69

4.21 Sharp 14.1-inch FL .................................................................................................. 4-82

Satellite M20 Maintenance Manual 4-v

4 Replacement Procedures

Figures

Figure 4-1 Battery lock ......................................................................................................... 4-8

Figure 4-2 Removing the battery pack ................................................................................. 4-9

Figure 4-3 Removing the PC card ...................................................................................... 4-11

Figure 4-4 Removing the memory cover ............................................................................ 4-12

Figure 4-5 Removing the optional memory........................................................................ 4-13

Figure 4-6 Removing the MDC cover ................................................................................ 4-15

Figure 4-7 Removing the MDC card .................................................................................. 4-16

Figure 4-8 Removing the HDD cover................................................................................. 4-18

Figure 4-9 Removing the HDD pack .................................................................................. 4-19

Figure 4-10 Removing the HDD bracket............................................................................ 4-19

Figure 4-11 Removing the selectable bay module.............................................................. 4-21

Figure 4-12 Removing the connector from the DVD-ROM drive ..................................... 4-23

Figure 4-13 Removing the frame from the DVD-ROM drive............................................ 4-24

Figure 4-14 Removing the Switch cover ........................................................................... 4-25

Figure 4-15 Removing the Switch Cover ........................................................................... 4-26

Figure 4-16 Removing the screws ....................................................................................... 4-27

Figure 4-17 Removing the keyboard .................................................................................. 4-28

Figure 4-18 Removing the wireless LAN card cover ......................................................... 4-30

Figure 4-19 Removing the wireless LAN card................................................................... 4-31

Figure 4-20 Removing the speakers ................................................................................... 4-32

Figure 4-21 Removing the speakers ................................................................................... 4-33

Figure 4-22 Removing the display mask ............................................................................ 4-34

Figure 4-22-01 Removing the display mask step (1).......................................................... 4-35

Figure 4-22-02 Removing the display mask step (2).......................................................... 4-35

Figure 4-22-03 Removing the display mask step (3).......................................................... 4-35

Figure 4-22-04 Removing the display mask step (4).......................................................... 4-35

Figure 4-22-05 Removing the display mask step (5).......................................................... 4-36

Figure 4-22-06 Removing the display mask step (6).......................................................... 4-36

Figure 4-22-07 Removing the display mask step (7).......................................................... 4-36

4-vi Satellite M20 Maintenance Manual

4 Replacement Procedures

Figure 4-22-08 Removing the display mask wrong step (1)............................................... 4-37

Figure 4-22-09 Removing the display mask wrong step (2)............................................... 4-37

Figure 4-22-10 Removing the display mask wrong step (3)............................................... 4-37

Figure 4-23 Removing the FL inverter board..................................................................... 4-38

Figure 4-24 Disconnecting the cables................................................................................. 4-39

Figure 4-25 14.1-inch LCD module and screws................................................................. 4-40

Figure 4-26 Removing LCD Panel Holder Screw .............................................................. 4-41

Figure 4-27 Removing LCD Latch Holder Screw.............................................................. 4-42

Figure 4-28 Removing LCD/FL Cable Connector ............................................................. 4-42

Figure 4-29 Removing the screws from the bottom and back of the computer................... 4-44

Figure 4-30 Removing the top cover .................................................................................. 4-45

Figure 4-31 Removing the RTC battery ............................................................................. 4-48

Figure 4-32 Removing the power supply board .................................................................. 4-49

Figure 4-33 Removing the sound board............................................................................... 4-50

Figure 4-34 Removing the cooling module ......................................................................... 4-52

Figure 4-35 Applying silicon greases ................................................................................. 4-53

Figure 4-36 Removing the CPU .......................................................................................... 4-55

Figure 4-37 Installing the CPU........................................................................................... 4-56

Figure 4-38 Fixing the CPU................................................................................................ 4-57

Figure 4-39 Removing the selectable bay cover, HDD case, and cable for DC jack ......... 4-58

Figure 4-40 Removing the system board ............................................................................ 4-59

Figure 4-41 Removing the membrane switch..................................................................... 4-60

Figure 4-42 Removing the PCB cover and tape ................................................................. 4-61

Figure 4-43 Removing the two screws for fixing the power supply board ........................ 4-62

Figure 4-44 Releasing the 18 hooks .................................................................................... 4-63

Figure 4-45 Removing the panel assembly......................................................................... 4-64

Figure 4-46 Removing the clips and backlight sheets ........................................................ 4-65

Figure 4-47 Removing the screws for fixing the FL tube back cover ................................. 4-66

Figure 4-48 Disconnecting the FL tube ground wire........................................................... 4-66

Figure 4-49 Removing the FL tube..................................................................................... 4-67

Figure 4-50 Removing the tape and insulation sheet.......................................................... 4-69

Figure 4-51 Removing the screws ...................................................................................... 4-70

Satellite M20 Maintenance Manual 4-vii

4 Replacement Procedures

Figure 4-52 Removing the double-sided tape..................................................................... 4-71

Figure 4-53 Spreading out the PCB horizontally................................................................ 4-72

Figure 4-54 Removing the cell of the PCB assembly......................................................... 4-73

Figure 4-55 Attaching double-sided tape to the bezel's reverse side................................... 4-74

Figure 4-56 Inspecting the replacement backlight.............................................................. 4-75

Figure 4-57 Removing the paper coated with a mold release............................................. 4-77

Figure 4-58 Folding down the TAB ................................................................................... 4-78

Figure 4-59 Aligning the bezel ........................................................................................... 4-79

Figure 4-60 Fixing the bezel............................................................................................... 4-80

Figure 4-61 Attaching the insulation sheet and tape .......................................................... 4-81

Figure 4-62 Removing the protectives cover and tape ....................................................... 4-82

Figure 4-63 Removing the screws from the sides............................................................... 4-83

Figure 4-64 Removing the clips close to the lamp ............................................................. 4-83

Figure 4-65 Removing the bezel......................................................................................... 4-84

Figure 4-66 Removing the lamp cover ............................................................................... 4-84

Figure 4-67 Replacing the lamp unit .................................................................................. 4-85

Figure 4-68 Attaching the bezel.......................................................................................... 4-86

Figure 4-69 Fastening the screws on both sides ................................................................. 4-86

Figure 4-70 Attaching the protective cover and tapes ........................................................ 4-87

Figure 4-71 Visual inspections ........................................................................................... 4-88

4-viii Satellite M20 Maintenance Manual

4 Replacement Procedures

Satellite M20 Maintenance Manual 4-ix

4.1 General 4 Replacement Procedures

4 1

4.1 General

This chapter explains how to disassemble the computer and replace Field Replaceable Units

(FRUs). Some replacement procedures may not require you to remove all the surrounding

FRUs to replace only one FRU. The chart below shows the FRUs in the order in which they should be removed in a top-down manner, irrespective of their physical locations. The FRUs shown in the top area of the chart should normally be removed before removing the FRUs shown in the bottom area. To replace the FRUs, first identify the suspect FRU for the system failure. Next, according to this chart, determine the FRUs that need to be removed before removing the suspect FRU. After you determined those FRUs, go to the appropriate sections according to the section numbers shown in the boxes. Then start removal and replacement.

4.2

HDD

4.11 Top Cover

4.12 RTC

4.13 Power

4.3

Selectable Bay

Modules

4.14

Sound

Board

4.15

Cooling

Module

4.4

Switch Cover

4.5 Keyboard

4.6 Wireless LAN Card

4.18

Membrane

Switch

4.7

Speakers and

Microphone

4.19

LCD/FL

Cable

4.8 Display Mask

4.9 FL Inverter Board

4.10

LCD Module

4.20

FL

4.17 System Board 4.16

CPU

How to use the chart (two examples):

• For removing the Cooling Module

First, remove the top cover with the display assembly. Then, remove the

HDD, selectable bay module, switch cover, keyboard, and wireless LAN card, all of which are shown above the top cover with the display assembly.

• For removing the LCD Module

First, remove the display mask and FL inverter board, both of which are shown above the LCD module.

4.2

HDD

4.3

Selectable

Bay

Modules

4.4

Switch

Cover

4.5

Keyboard

4.6

Wireless

LAN Card

4.11 Top Cover with Display Assembly

4.8

Display

4.9

FL Inverter

4.10 LCD

Module

4.12

RTC

4.13

Power

4.10

Sound

Boar d

4.15

Cooling

Module

4.18

Membrane

Switch

4.7

Speakers and

Microphone

4.19

LCD/FL

Cable

4.20

FL

4.17 System

Board

4.16

CPU

Cooling module

Satellite M20 Maintenance Manual 4-1

4 Replacement Procedures 4.1 General

Safety Precautions

Before you begin disassembling, read the following safety precautions carefully. Be sure to follow them while you are working.

DANGER:

1. Always use the genuine batteries or replacement batteries authorized by Toshiba.

Batteries other than those differ in specifications and are incompatible with the computer.

They may burst or explode. Never heat or disassemble the battery packs to avoid leakage of alkaline solutions. Never throw the battery packs into a fire. If this is violated, they will

explode.

2. The components such as the power supply and FL inverter carry high voltages. When you partially disassemble the computer and turn on the components, use extreme care not to touch the connectors and components to avoid the risk of electrical shock. Do not

disassemble individual components during first-level maintenance.

WARNING:

1. To avoid the risk of electrical shock, turn the computer off and remove the AC adapter

from the electrical outlet.

2. Because the battery in the computer is left charged, the risk of electrical shock remains even after the AC adapter is removed from the electrical outlet. To avoid the risk of electrical shock, be sure to put off any metal jewelry or accessories such as necklaces,

bracelets, and rings before starting work. Never work with your hands wet or damped.

3. To avoid personal injury, use care to the sharp edges or corners of the components.

4-2 Satellite M20 Maintenance Manual

4.1 General 4 Replacement Procedures

CAUTION:

1. Before replacing a component, make sure that the replacement component meets the required specifications. To avoid computer failures, never use components that do not

meet the specifications.

2. To avoid internal damage such as short circuits and fire, never drop metal objects such as screws, pins, paper clips, etc. into the components. When a screw is removed, be sure to replace a screw that is the same size as the original screw. Make sure that all the screws are fastened securely. Loose screws can cause short circuits, overheating, smoke, or fire.

3. Before raising an FRU or other component, make sure that all the component cables have been disconnected to avoid the risk of electrical shock caused by accidental contact with

the energized components.

4. For AC input, be sure to use the AC adapter and AC power cable that come with your

computer or Toshiba-recommended equivalents.

5. To avoid the risk of electrical shock, make sure that all the replacement components meet the specifications of the computer and that all the cables and connectors are fastened

securely.

6. Inside the PC are components that become hot during operation (such as the CPU and cooling module). To avoid burns, let the hot components cool down before starting inspection or repair task.

Satellite M20 Maintenance Manual 4-3

4 Replacement Procedures 4.1 General

Before You Begin

Before you begin disassembling the computer, keep in mind the precautions and advice in this section. Always begin disassembling from removing the AC adapter and battery pack. Remove the optional parts and accessories as well. The procedures for removing the batteries will be explained later.

Disassemble the computer only when an abnormality has occurred.

Use only the recommended tools.

To run and store the computer, be sure to prepare a working environment that is free from:

Dust and contaminants

Static electricity

Extremely high or low temperatures and extremely high humidity

Run the diagnostic tests explained in Chapter 2 of this manual to identify the FRU that has probably caused the system failure.

Perform only the required machine operations. Use only the disassembly and reinstallation procedures described in this manual.

Place the removed components in a safe place away from the computer so that they may not be damaged or get in the way of you doing your work.

Normally, a number of screws need to be removed or replaced during disassembling. Place the removed screws in a safe place so that you can easily find the right screws for the right components.

When assembling the computer, use the specified screws to fasten the parts to the specified locations. See the appropriate explanations and figures for screw sizes.

To avoid personal injury, use care to handle components that have sharp edges or corners.

After you have replaced an FRU, check that the FRU works correctly to ensure normal computer operation.

4-4 Satellite M20 Maintenance Manual

4.1 General 4 Replacement Procedures

Disassembly Procedures

The cable connectors come in these two basic types:

Pressure plate connectors

Normal pin connectors

To remove a pressure plate connector, pull up the tabs on either side of the connector's plastic pressure plate and gently pull the cable out of the connector. To reconnect the cable to the pressure plate's connector, raise the pressure plate up to a satisfactory height and slide the cable into the connector. Fix the cable to the correct position by pressing down the sides of the pressure plate so that the plate can be flush with the sides of the connector. Grasp and pull the cable gently to check that the cable is connected firmly. If the cable came off the connector, reinsert the cable by raising the pressure plate up to a satisfactory height.

Normal pin connectors are used for all the other types of cables. These connectors can be installed or removed by simply inserting them or pulling them out.

Assembly Procedures

You have to reassemble the computer after you disassembled the computer and fixed the component that caused the problem.

When reassembling the computer, keep the following general guidelines in mind:

Take your time to carry out the suggested instructions completely. Hurried reassembling can often cause problems.

Check that all the cable and connectors are fastened securely.

Before fixing the FRUs or other parts, check that the cables are not caught by the screws or FRUs.

Check that all the latches are closed securely.

Check that all the required screws are used to fix the FRUs. Using wrong screws can damage the threads or heads of the screws or does not ensure firm FRU fixing.

After installing an FRU, make sure that the FRU and computer can work normally.

Satellite M20 Maintenance Manual 4-5

4 Replacement Procedures 4.1 General

Tools and Equipment

For the safety of you and other people in the working environment, it is strongly recommended to use electrostatic discharge (ESD) equipment. The proper use of this equipment will ensure successful repair work and reduce the costs for fixing damaged components. The equipment and tools required for disassembling and reassembling are:

One 2 mm Phillips screwdriver

One 4 mm flat-blade screwdriver

One 4 mm LHSTIX screwdriver

Tweezers (for pulling out screws)

ESD mats (for the floor and work desks)

An ESD wrist strap or heel grounder

Anti-static carpets or flooring

Air ionizers (for highly electrostatic sensitive areas)

A plastic card (in credit card size)

Screw Tightening Torque

To fasten screws, follow the torque values listed below. Overtightening can damage components and screws. Undertightening can loosen the fastening or make screws come off, which may result in short circuits or other damage.

M2 (2 mm)

M2.5 (2.5 mm)

M3 (3 mm)

LCD screws

- By DTI

- By Sharp

- By Samsung

0.22 N・m (2.2 kgf・cm)

0.36 N・m (3.5 kgf・cm)

0.51 N・m (5.0 kgf・cm)

0.153 N・m (1.5 kgf・cm)

0.092 N・m (0.9 kgf・cm)

0.153 N・m (1.5 kgf・cm)

M2.5x4 PSP TITE screws 0.204 N・m (2.0 kgf・cm)

M2.5x6 GIZA TITE screws 0.36 N・m (3.5 kgf・cm)

4-6 Satellite M20 Maintenance Manual

4.1 General 4 Replacement Procedures

Colors of Screw Shanks

For easy identification of the correct screws, the screw shanks are colored according to their lengths, as follows:

Screws of an even-numbered length Brown

Screws of an odd-numbered length White

Screws of a special length Blue

Screws of a special length are those of a length having decimal places, such as 2.5 mm and 2.6 mm.

Symbols of Screws on the Computer Body

For easy maintenance, the screw types are shown on the computer body as symbols. A symbol consists of a letter representing the screw type and a numeral representing the screw length.

Screw type

Bind screw

Flat-head screw

Super flat-head screw

Tapping screw

LHSTIX screw

Other screws

Symbol examples

Letter

B (stands for bind)

F (stands for flat-head)

S (stands for super flat-head)

T (stands for tapping)

*

U (stands for unique-pan head screws, studs, etc.)

6 mm bind screw

12 mm bind screw

B6

B12

5 mm stud U5

(The numeral represents the rounded length of the threaded portion irrespective of the entire stud length.)

Satellite M20 Maintenance Manual 4-7

4 Replacement Procedures 4.1 General

Removing the Battery Pack

Remove the battery pack according to the following procedures and Figures 4-1 and 4-2.

CAUTION: When handling the battery packs, use care not to short circuit the terminals.

Do not drop, hit, twist, or bend the battery packs. Do not scratch or break up their casing.

1. Turn the computer upside down so that its front can face you.

2. Slide out the battery lock.

Figure 4-1 Battery lock

4-8 Satellite M20 Maintenance Manual

4.1 General 4 Replacement Procedures

3. Slide the battery release latch and remove the battery pack from the computer.

NOTE: Dispose of the used battery packs as required by local ordinances or regulations.

Figure 4-2 Removing the battery pack

Satellite M20 Maintenance Manual 4-9

4 Replacement Procedures 4.1 General

Installing the Battery Pack

Install the battery pack according to the following procedures and Figures 4-1 and 4-2.

CAUTION: The battery packs contain a lithium ion battery, which can explode by improper replacement, use, handling, or disposal. Always dispose of the battery packs as required by local ordinances or regulations. Use only replacement batteries recommended by Toshiba.

NOTE: Visually check the battery's terminals. If they are dirty, clean them with a dry cloth.

1. Gently insert a new or recharged battery pack into place. Check that the battery release latch slides in and stops with a click.

2. Slide in the battery lock.

Removing the Optional PC Card

Remove the optional PC card according to the following procedures and Figure 4-3, after checking that computer is turned off in boot mode.

CAUTION: Install or remove the PC card correctly, according the manuals of the PC card and the operating system you are using.

1. Unlock the PC card by sliding the PC card security lock.

2. Push the eject button for the PC card to be removed until it stops and release the button.

3. When the eject button popped out slightly, push it again.

4. When the PC card popped out, grasp it and pull it out.

4-10 Satellite M20 Maintenance Manual

4.1 General 4 Replacement Procedures

Figure 4-3 Removing the PC card

Installing the Optional PC Card

Install the optional PC card according to the following procedures and Figure 4-3, after checking that the computer is turned off in boot mode.

1. Insert the PC card gently until it stops and is seated securely.

2. After checking that the PC card is seated securely, push the PC card release lever slightly.

3. Lock the PC card by sliding the PC card security lock.

After the PC card is installed, check the hardware configuration in the Hardware Setup or

TSETUP program to make sure that the PC card in compatible with the current hardware configuration.

Satellite M20 Maintenance Manual 4-11

4 Replacement Procedures 4.1 General

Removing the Optional Memory

Remove the optional memory (module) according to the following procedures and Figures 4-4 and 4-5, after checking that the computer is turned off in boot mode.

CAUTION: Remove the optional memory after turning off the computer. If this is violated, the computer or memory can be damaged.

1. Turn the computer upside down.

2. Remove the two M2.5x4 white bind screws.

3. Remove the memory cover.

CAUTION: Do not touch the connectors on the memory modules or in the computer.

Contaminated connectors can cause memory access problems.

Figure 4-4 Removing the memory cover

4-12 Satellite M20 Maintenance Manual

4.1 General 4 Replacement Procedures

4. Spread out the two memory lock stoppers so that the memory module can be raised.

5. Pull the memory module up and out at an angle, using care to the connectors.

Figure 4-5 Removing the optional memory

Satellite M20 Maintenance Manual 4-13

4 Replacement Procedures 4.1 General

Installing the Optional Memory

Install the optional memory (module) according to the following procedures and Figures 4-4 and 4-5, after checking that the computer is turned off in boot mode.

CAUTION: Install the optional memory after turning off the computer. If this is violated, the computer or memory can be damaged.

1. Insert the memory module into the connector at an angle of 45 degrees.

2. Tilt the memory module so that it can be fixed with both memory lock stoppers.

3. Reinstall the memory cover.

4. Fasten the cover with the two M2.5x4 white bind screws.

After the computer is turned on, check the hardware configuration in the Hardware Setup or

TSETUP program to make sure that the installed memory module has been recognized by the system. If it has not been recognized yet, check the connections.

CAUTION: To prevent system malfunctions, always use Slot A first to insert the memory modules.

4-14 Satellite M20 Maintenance Manual

4.1 General 4 Replacement Procedures

Removing the MDC Card

Remove the MDC Card (Modem Daughter Card) according to the following procedures and

Figures 4-6 and 4-6, after checking that the computer is turned off in boot mode.

CAUTION: Remove the MDC card after turning off the computer. If this is violated, the computer or MDC card can be damaged.

1. Turn the computer upside down.

2. Remove one M2.5x4 black bind screw.

3. Remove the MDC cover.

CAUTION: Do not touch the connectors on the MDC card or in the computer.

Contaminated connectors can cause MDC card failures.

Figure 4-6 Removing the MDC cover

Satellite M20 Maintenance Manual 4-15

4 Replacement Procedures

4. Remove the two M2.2x4 white bind screws for fixing the MDC card.

5. Raise the MDC card and disconnect it from CN501.

6. Disconnect the MDC cable from the connector PJ1 on the MDC card.

4.1 General

Figure 4-7 Removing the MDC card

4-16 Satellite M20 Maintenance Manual

4.1 General 4 Replacement Procedures

Installing the MDC Card

Install the MDC card according to the following procedures and Figures 4-6 and 4-7, after checking that the computer is turned off in boot mode.

CAUTION: Install the MDC card after turning off the computer. If this is violated, the computer or MDC card can be damaged.

CAUTION: Do not touch the connectors on the MDC card or in the computer.

Contaminated connectors can cause MDC card failures.

1. Connect the MDC cable to the connector PJ1 on the MDC card.

2. Connect the MDC card to CN501 on the system board.

3. Fix the MDC card with the two M2.2x4 white bind screws.

4. Install the MDC cover.

5. Fix the MDC cover by fastening one M2.5x4 white bind screw.

After the computer is turned on, check the hardware configuration in the Hardware Setup or

TSETUP program to make sure that the installed MDC card has been recognized by the system.

If it has not been recognized yet, check the connections.

Satellite M20 Maintenance Manual 4-17

4 Replacement Procedures 4.2 HDD

4.2 HDD

Removing the HDD

CAUTION: Do not press the top or bottom of the drive.

Applying such pressure can corrupt the data in the drive or damage the drive.

Remove the HDD (hard disk drive) according to the following procedures and Figures 4-8, 4-9, and 4-10.

1. Remove one M2.5x6 black bind screw for fixing the HDD cover.

2. Remove the HDD cover by sliding it in the direction of the arrows.

4-18

Figure 4-8 Removing the HDD cover

Satellite M20 Maintenance Manual

4.2 HDD 4 Replacement Procedures

3. Remove the HDD pack by pulling the white vinyl grip attached to the HDD pack. Use care not to touch the connectors.

Figure 4-9 Removing the HDD pack

NOTE: Do not disassemble the HDD pack when it is working normally. Disassemble or replace the HDD pack only if it failed.

4. Place the HDD pack on a flat surface (such as a desk), and remove the two M3x4 white flat-head screws.

5. Remove the HDD bracket.

Figure 4-10 Removing the HDD bracket

CAUTION: Do not apply pressure to the top or bottom of the drive.

Satellite M20 Maintenance Manual 4-19

4 Replacement Procedures 4.2 HDD

Installing the HDD

Install the HDD according to the following procedures and Figures 4-8, 4-9, and 4-10.

CAUTION: To avoid damage, always hold the HDD only by its sides.

1. Attach the HDD bracket and white plastic grip to the HDD pack.

2. Fix the HDD and its bracket with the two M3x4 black flat-head screws.

CAUTION: When installing the HDD pack into the computer, do not press the center of the

HDD pack to prevent the HDD bracket from being distorted. Always hold the HDD pack by its sides.

3. Install the HDD pack into the correct position in the computer. Connect the HDD pack to the computer, holding the HDD pack by its sides.

4. Insert the white plastic grip into the gap between the computer and HDD pack, and install the HDD cover.

5. Fix the HDD cover with one M2.5x6 black bind screw.

4-20 Satellite M20 Maintenance Manual

4.3 Selectable Bay Modules 4 Replacement Procedures

4.3 Selectable Bay Modules

Removing the Selectable Bay Module

NOTE: The installation and removal procedures are the same for all the modules that can be installed in the selectable bays. See the appropriate sections for the disassembly procedures of the specific modules.

Remove the selectable bay module according to the following procedures and Figure 4-11.

1. Turn the computer upside down.

2. When the lock screw is in the locked position, remove the lock screw and attach it to the hole for temporarily retaining the lock screws.

3. By sliding the release lever in the direction of the arrow, pull out the selectable bay module in the direction of the arrow.

For removing the selectable bay cover, see the explanations of "Disassembling the CD-ROM

Drive."

CAUTION: Handle the selectable bay module carefully, because it becomes hot during operation.

Figure 4-11 Removing the selectable bay module

Satellite M20 Maintenance Manual 4-21

4 Replacement Procedures 4.3 Selectable Bay Modules

Installing the Selectable Bay Module

Install the selectable bay module according to the following procedures and Figure 4-11.

1. Place the selectable bay module in the correct position and slide it in.

2. Push it until it clicks into place.

4-22 Satellite M20 Maintenance Manual

4.3 Selectable Bay Modules 4 Replacement Procedures

Disassembling the DVD-ROM Drive

NOTE: Do not disassemble the DVD-ROM drive when it is working normally.

Disassemble or replace the DVD-ROM drive only if it failed.

Disassemble the DVD-ROM drive according to the following procedures and Figures 4-12 and

4-13.

1. Remove the two M2x8 black bind screws.

2. Remove the connector cover and connector from the DVD-ROM drive.

Figure 4-12 Removing the connector from the DVD-ROM drive

3. Remove the five M2x3 white super flat-head screws.

4. Remove the frame.

Satellite M20 Maintenance Manual 4-23

4 Replacement Procedures 4.3 Selectable Bay Modules

Figure 4-13 Removing the frame from the DVD-ROM drive

Assembling the DVD-ROM Drive

Assemble the DVD-ROM drive according to the following procedures and Figures 4-12 and

4-13.

1. Attach the frame to the DVD-ROM drive

.

2. Fix the frame with the five M2x3 white super flat-head screws.

3. Attach the connector and connector cover to the DVD-ROM drive, and fix them with the two M2x8 black bind screws.

4-24 Satellite M20 Maintenance Manual

4.4 Switch Cover 4 Replacement Procedures

Removing the Switch Cover

Remove the switch cover according to the following procedures and Figures 4-14 and 4-15.

1. Turn the computer upside down.

2. Remove two M2.5x12 black bind screws.

3. Remove the eight latches on the switch cover.

Figure 4-14 Removing the Switch cover

Satellite M20 Maintenance Manual 4-25

4 Replacement Procedures 4.4 Switch Cover

Figure 4-15 Removing the Switch Cover

Install the Switch Cover

Install the switch cover according to the following procedures and Figures 4-14 and 4-15.

1. Install the switch cover.

2. Turn the computer upside down.

3. Fix switch cover with two M2.5x12 black bind screws.

4-26 Satellite M20 Maintenance Manual

4.5 Keyboard 4 Replacement Procedures

4.5 Keyboard

Removing the Keyboard

Remove the keyboard according to the following procedures and Figures 4-16 and 4-17.

CAUTION: To avoid fingernail damage, do not pull out the keyboard holder by clamping it with your fingernails.

1. Open the display panel.

2. Remove the keyboard lock and M2.5x2 black bind screws.

3. Move the keyboard in the direction of the arrow until the keyboard connector appears.

Figure 4-16 Removing the keyboard lock and screws

4. Disconnect the keyboard cable from CN18 on the system board and remove the keyboard.

Satellite M20 Maintenance Manual 4-27

4 Replacement Procedures 4.5 Keyboard

Figure 4-17 Removing the keyboard

Installing the Keyboard

Install the keyboard according to the following procedures and Figures 4-16 and 4-17.

1. Connect the keyboard cable to CN18 on the system board.

2. Align the latches on the front of the keyboard with the latch holes on the top cover.

3. Fix the keyboard with the keyboard lock and M2.5x2 black bind screws.

4. Install the keyboard holder in the correct position and fasten the five latches securely.

4-28 Satellite M20 Maintenance Manual

4.6 Wireless LAN Card 4 Replacement Procedures

4.6 Wireless LAN Card

Removing the Wireless LAN Card

NOTE: This securing touch pad cover screw type depends on W-LAN cards

- If IEEE802.11 a&b(combo) card is installed, a torx screw is secured.

- If IEEE802.11 a&b(combo) card is not installed, a normal screw is secured.

- If another module is instaledl, M2x4 black LHSTIX screw is secured.

Remove the wireless LAN card according to the following procedures and Figures 4-18 and

4-19.

1. Remove one M2x4 black screw.

2. Remove the wireless LAN card cover.

M2x4 black screw

Wireless LAN card cover

Figure 4-18 Removing the wireless LAN card cover

3. Remove the glass tape.

CAUTION: Do not touch the connectors on the wireless LAN card and in the computer with bare hands. Wireless LAN cards can fail if they are contaminated with sweat, natural oils, etc. from your hands.

4. Disconnect the two antenna cables with the tweezers.

5. Spread out both the left and right stoppers for fixing the wireless LAN card until the card can be raised.

Satellite M20 Maintenance Manual 4-29

4 Replacement Procedures 4.6 Wireless LAN Card

Figure 4-19 Removing the wireless LAN card

6. Pull the wireless LAN card up and out at an angle.

Installing the Wireless LAN Card

Install the wireless LAN card according to the following procedures and Figures 4-18 and

4-19.

1. Insert the wireless LAN card into the connector at angle of 45 degrees.

2. Tilt the wireless LAN card and fix it with the left and right stoppers.

3. Connect the two antenna cables with the tweezers.

CAUTION: Do not touch the connectors on the wireless LAN card and in the computer with bare hands. Wireless LAN cards can fail if they are contaminated with sweat, natural oils, etc. from your hands.

4. Fix the antenna cables with glass tape.

5. Install the wireless LAN card cover.

6. Fix the cover with one M2x4 black screw.

4-30 Satellite M20 Maintenance Manual

4.7 Speaker 4 Replacement Procedures

4.7 Speakers

Removing the Speakers

Remove the speakers according to the following procedures and Figure 4-20 and 4-21.

.

1. Turn the computer upside down, remove the two M2.5x20 black bind screws

2. Disconnect the speaker cables CN8 and CN9 on the system board.

3. Remove the speaker cables from the guides (grooves) on the top cover.

4. Remove the two and M2.5x6 black flat-head screws (one screw for one speaker).

5. Remove the left and right speakers.

Figure 4-20 Removing the speakers

Satellite M20 Maintenance Manual 4-31

4 Replacement Procedures

M2.5x6 black flat-head screw

4.7 Speaker

CN8

CN9

Figure 4-21 Removing the speakers

Installing the Speakers

Install the speakers according to the following procedures and Figure 4-20 and 4-21.

1. Place the left and right speakers in their correct position and fix them with the M2.5x6 black flat-head screws.

(one screw for onespeaker).

2. Push the speaker cables into the guides on the top cover.

3. Fix the two M2.5x20 black bind screws.

4-32 Satellite M20 Maintenance Manual

4.8 Display Mask 4 Replacement Procedures

Removing the Display Mask

Remove the display mask according to the following procedures and Figure 4-22.

1. Remove the six seals for covering the screws.

2. Remove the two M2.5x6 black flat-head screws and four white flat-head screws.

NOTE: When removing the screws, support the display by its back with one hand.

3. Release the following 20 latches on the display mask, in that order:

- Eight bottom latches

- Four latches on each of the left and right sides

- Four top latches

M2x6 white flat-head screw

Seal for covering the screw

Latch Double side tape

Display mask

Seal for covering the screw

M2.5x6 black bind screw

Figure 4-22 Removing the display mask

Satellite M20 Maintenance Manual 4-33

4 Replacement Procedures

4. The precise steps to remove the display mask from LCM Panel

4.8 Display Mask

Fig 4-22-01 Removing display mask step (1) Fig 4-22-02 Removing display mask step (2)

a. Starting remove along the LCM upside outermost direction, until the latch of display mask separate from LCM bottom cover.

Then fully separate the display mask and LCM panel in the upside portion.

Fig 4-22-03 Removing display mask step (3) Fig 4-22-04 Removing display mask step (4)

b. Same as above step-a, fully separate the display mask and LCM panel in left side portion and right side portion.

4-34 Satellite M20 Maintenance Manual

4.8 Display Mask 4 Replacement Procedures

Fig 4-22-05 Removing display mask step (5) Fig 4-22-06 Removing display mask step (6)

c. The last step is to fully separate the downside portion of display mask and LCM panel.

Satellite M20 Maintenance Manual

Fig 4-22-07 Removing display mask step (7)

4-35

4 Replacement Procedures 4.8 Display Mask

Warning: Don't remove along the LCM innermost direction as below photos show since very strong glue double-side tape exists between display mask and LCM panel, or the display mask will be broken easily.

Fig 4-22-08 Removing display mask wrong step (1) Fig 4-22-09 Removing display mask wrong step (2)

Fig 4-22-10 Removing display mask wrong step (3)

Installing the Display Mask

Install the display mask according to the following procedures and Figure 4-22.

1. Place the display mask in the correct position and fasten the following 20 latches, in that order:

- Eight top latches

- Four latches on each of the left and right sides

- Four bottom latches

2. Fix the display mask with the six M2.5x6 black flat-head screws.

NOTE: When fastening the screws, support the display by its back with one hand.

3. Attach the six seals to the screw heads to cover the screws.

4-36 Satellite M20 Maintenance Manual

4.9 FL Inverter Board 4 Replacement Procedures

4.9 FL Inverter Board

Removing the FL Inverter Board

Remove the FL inverter board according to the following procedures and Figure 4-23 and

4-24.

1. Remove the M2x5 white bind screw.

Figure 4-23 Removing the FL inverter board

2. Raise the FL inverter board and disconnect the LCD/FL cable from CN1.

3. Disconnect the HV cable from CN2 and remove the FL inverter board.

Satellite M20 Maintenance Manual 4-37

4 Replacement Procedures 4.9 FL Inverter Board

Figure 4-24 Disconnecting the cables

Installing the FL Inverter Board

Install the FL inverter board according to the following procedures and Figures 4-23 and 4-24.

1. Connect the LCD/FL cable to CN1, and connect the HV cable to CN2.

2. Place the FL inverter board in the correct position.

3. Fasten the M2x5 white bind screw to fix the FL inverter board.

4-38 Satellite M20 Maintenance Manual

4.11 Top Cover with Display Assembly

4.10 LCD Modules

NOTE: ICs are fragile. Use extreme care not to apply pressure to the ICs along the edges of the LCD module.

NOTE: Dispose of used LCD panels (fluorescent (FL) tubes) as required by local ordinances or regulations.

Removing the 14.1-inch LCD Module

Remove the 14.1-inch LCD module according to the following procedures and Figures 4-25 and 4-28.

1. Open the display panel. Disconnect the LCD/FL cable CN7 on the system board.

2. Remove the three M2.5x4 black bind screws for fixing the LCD module.

3. Carefully tilt the LCD module toward you.

Figure 4-25 Removing the 14.1-inch LCD module and screws

Satellite M20 Maintenance Manual 4-39

4 Replacement Procedures 4.11 Top Cover with Display Assembly

4. Remove the two M2x6 white bind screws and M2x4 white bind screws for fixing the

LCD.

5. Remove the four M2x4 white bind screws for fixing the hinge bracket.

M2.5x6 white bind screw

LCD module

M2x4 white bind screw

M2x4 white bind screw

Figure 4-26 Remove LCD Panel Holder Screw

6. Remove the tape and gasket for securing the LCD/FL cable connector and disconnect the LCD/FL cable.

4-40 Satellite M20 Maintenance Manual

4.11 Top Cover with Display Assembly

LCD module

Right LCD bracket

Left LCD bracket

M2x4 white bind screw

M2x4 white bind screw

Figure 4-27 Remove LCD Latch Holder Screw

Gasket

LCD module

LCD/FL cable connector

Figure 4-28 Remove LCD/FL Cable Connecter

Satellite M20 Maintenance Manual 4-41

4 Replacement Procedures 4.11 Top Cover with Display Assembly

Installing the 14.1-inch LCD Module

Install the 14.1-inch LCD module according to the following procedures.

1. Connect the LCD/FL cable to the LCD module.

2. Attach the tape and gasket for securing the LCD/FL cable connector to cover the connected area of the connector.

3. Place the hinge bracket in the correct position and fix it with the four M2x4 white bind screws.

4. Place the LCD in the correct position and fix it with the two M2x6 white bind screws and M2x4 white bind screws.

5. Place the LCD module in the correct position and fix it with the three M2.5x4 black bind screws.

4-42 Satellite M20 Maintenance Manual

4.11 Top Cover

4.11 Top Cover

Removing the Top Cover

Remove the top cover according to the following procedures and Figures 4-29 and 4-30.

1. Turn the computer upside down, and remove the following 14 screws:

- Ten M2.5x6 black bind screws

- One M2.5x4 black bind screws

- One M2.5x12 black bind screw

- Two M2x4 white bind screws

Figure 4-29 Removing the screws from the bottom and back of the computer

Satellite M20 Maintenance Manual 4-43

4 Replacement Procedures 4.11 Top Cover

2. Restore the normal computer placement and remove the M2.5x6 black bind screw.

3. Disconnect the flat cable of the membrane switch from CN19 on the system board.

M2.5x6 black bind screw

CN19 Flat cable of the memberane switch

Figure 4-30 Removing the top cover

4. Remove the top cover, using care to the three latches at the front.

4-44 Satellite M20 Maintenance Manual

4.11 Top Cover

Installing the Top Cover

Install the top cover according to the following procedures.

1. Fix the M2.5x6 black bind screw.

2. Connect the flat cable of the membrane switch to CN!9 on the system board.

3. Turn the computer upside down and fix it with the following 14 screws:

- Ten M2.5x6 black bind screws

- One M2.5x4 black bind screws

- One M2.5x12 black bind screw

- Two M2x4 white bind screw

Satellite M20 Maintenance Manual 4-45

4.12 RTC Batteries 4 Replacement Procedures

4.12 RTC Batteries

WARNING: To replace RTC (real-time clock) batteries, always use genuine batteries or

replacement batteries authorized by Toshiba. Using batteries other than those can cause battery explosions or other damage.

Never use an RTC battery that looks abnormal. Replace it with a new one, and dispose of the old battery as required by local ordinances or regulations.

Check for any of the following symptoms:

- Corrosion (looks blue-green) on the battery connector or cable

- Corrosion on the computer's battery connector

- White powder on parts of the battery

- White powder in the battery tray

- Clear liquid on the battery

- Clear liquid in the battery tray

- Clear liquid on the boards around the battery

2. Damage to the connection cable

3. Damage to the connector housing

If you found any powder or liquid in or around the battery tray, clean it up immediately.

Use extreme care not to let the leaked substance transfer to your eyes or mouth. Do not inhale fumes from the leaked substance.

If the leaked substance was accidentally transferred to your skin, eyes, or mouth, clean

the affected area thoroughly with clean water.

Satellite M20 Maintenance Manual 4-47

4 Replacement Procedures 4.12 RTC Batteries

Removing the RTC Battery

Remove the RTC battery according to the following procedures and Figure 4-31.

1. Disconnect the RTC battery cable from the RTC battery connector on the power supply board.

2. Take the RTC battery out of the battery tray.

Figure 4-31 Removing the RTC battery

Installing the RTC Battery

Install the RTC battery according to the following procedures and Figure 4-31.

1. Connect the RTC battery cable to the RTC battery connector on the power supply board.

2. Place the RTC battery in the correct position.

4-48 Satellite M20 Maintenance Manual

4.13 Power Supply Board 4 Replacement Procedures

4.13 Power Supply Board

Removing the Power Supply Board

Remove the power supply board according to the following procedures and Figure 4-32.

1. Disconnect the cable harnesses from CN21 and CN22 on the system board.

2. Remove the two M2.5x4 black bind screws for fixing the power supply board.

3. Remove the power supply board.

Figure 4-32 Removing the power supply board

Installing the Power Supply Board

Install the power supply board according to the following procedures and Figure 4-32.

1. Connect CN521,CN522 on the power supply board to CN20,CN23 on the system board and place the power supply board in the correct position.

2. Fix the power supply board with the two M2.5x4 black bind screws.

3. Connect the cable harnesses to CN21 and CN22 on the system board.

Satellite M20 Maintenance Manual 4-49

4 Replacement Procedures 4.14 Sound Board

4.14 Sound Board

Removing the Sound Board

Remove the sound board according to the following procedures and Figure 4-33.

1. Disconnect the SUMI-cards (flat cables) from CN1001 and CN1000 on the sound board.

2. Remove the M2.5x4 black flat-head screw for fixing the sound board.

3. Remove the lever of the slide switch.

4. Remove the sound board

CN1001

CN1002

CN10

CN1000

Figure 4-33 Removing the sound board

4-50 Satellite M20 Maintenance Manual

4.14 Sound Board 4 Replacement Procedures

Installing the Sound Board

Install the sound board according to the following procedures and Figures 4-33.

1. Connect the SUMI-cards to CN1001 and CN1000 on the sound board.

2. Place the sound board in the correct position.

3. Attach the lever of the slide switch to the correct position.

4. Fix the sound board with the M2.5x4 black flat-head screw.

5. Connect the SUMI-cards to CN1002 and CN10 on the system board.

Satellite M20 Maintenance Manual 4-51

4 Replacement Procedures 4.15 Cooling Module

4.15 Cooling Module

CAUTION: When removing the cooling module, keep the following in mind:

1. The cooling module can become very hot during operation. Be sure to let it cool down

before starting the repair work.

2. Do not touch or give shock to the fan in the cooling module.

Removing the Cooling Module

Remove the cooling module according to the following procedures and Figure 4-34.

1. Disconnect the cable of the cooling module from CN15 on the system board.

2. Remove the two M2.5x6 black flat-head screws and four M2x4 white bind screws.

3. Remove the cooling module.

CN15

Figure 4-34 Removing the cooling module

4-52 Satellite M20 Maintenance Manual

4.15 Cooling Module 4 Replacement Procedures

Installing the Cooling Module

Install the cooling module according to the following procedures and Figures 4-34 and 4-35.

CAUTION: When installing the cooling module, keep the following in mind:

1. Be sure to confirm the correct position for the module.

2. Before reinstalling the cooling module you removed, be sure to attach a new heat

conductive sheet to the CPU.

3. Route the cooling module cable between the module and HDD case.

1. When silicon greases are already applied to the CPU and fan module, wipe them off with a cloth.

By using a special syringe, apply silicon greases to the CPU chip so that the entire CPU chip can be covered with the greases.

NOTE: Apply silicon greases with a special syringe to cover the surface of the CPU chip completely.

CPU chip

Figure 4-35 Applying silicon greases

2. Place the cooling module in the correct position.

3. Fasten the four M2x4 white bind screws.

4. Fasten the two M2.5x6 black flat-head screws.

Satellite M20 Maintenance Manual 4-53

4 Replacement Procedures 4.15 Cooling Module

5. Connect the cooling module cable to CN15 on the system board.

4-54 Satellite M20 Maintenance Manual

4.16 CPU

4.16 CPU

4 Replacement Procedures

CAUTION: When removing the CPU, keep the following in mind:

The CPU can become very hot during operation. Be sure to let it cool down before starting repair work.

Removing the CPU

Remove the CPU according to the following procedures and Figure 4-36.

CAUTION: Remove the CPU by aligning the triangle with the shaded area.

1. Unlock the CPU by rotating the cam on the CPU socket 180 degrees to the left with a flat-blade screwdriver (in the order shown in the figure below).

2. Remove the CPU.

Satellite M20 Maintenance Manual

Figure 4-36 Removing the CPU

4-55

4 Replacement Procedures 4.16 CPU

Installing the CPU

Install the CPU according to the following procedures and Figures 4-36 and 4-38.

1. Check that the triangle on the cam is in the unlocking position.

2. Attach the CPU to the correct position in the CPU socket. Align the CPU with the CPU socket by using the triangle as a guide.

Figure 4-37 Installing the CPU

CAUTION: Place the CPU by aligning the triangle with the shaded area.

4-56 Satellite M20 Maintenance Manual

4.16 CPU 4 Replacement Procedures

3. Fix the CPU by rotating the cam 180 degrees to the right with a flat-blade screwdriver.

Figure 4-38 Fixing the CPU

Satellite M20 Maintenance Manual 4-57

4 Replacement Procedures 4.17 System Board

4.17 System Board

Removing the System Board

Remove the system board according to the following procedures and Figures 4-39 and 4-40.

1. Remove the three M2.5x6 flat-head screws and selectable bay cover.

2. Disconnect the SUMI-cards from CN1002 and CN10 on the system board.

3. Remove the M2.5x6 flat-head screw and HDD case.

4. Disconnect the cable for the DC jack from CN11.

CN1002

CN10

X

CN11

X

Figure 4-39 Removing the selectable bay cover, HDD case, and cable for DC jack

CAUTION: The HDD case must be installed on the system board after the HDD case has been placed in the correct position. If not so, parts on the board can be damaged when the

HDD case is removed.

5. Remove the three M2.5x4 black flat-head screws for fixing the system board.

6. Remove the system board.

4-58 Satellite M20 Maintenance Manual

4.17 System Board 4 Replacement Procedures

Figure 4-40 Removing the system board

Installing the System Board

CAUTION:

1. When installing the system board, be sure to seat the board in the correct position.

Misseated system boards can cause device damage when the computer is reassembled.

2. Route the cable for DC jack between the guide ribs on the base body. The cooling module can not be installed without correct routing.

Install the system board according to the following procedures and Figures 4-39 and 4-40.

1. Place the system board in the correct position and fix it with the four M2.5x4 black flat-head screws.

2. Connect the cable for DC jack to the correct area and CN11.

3. Place the HDD case in the correct position and fix it with the M2.5x6 black flat-head screw.

4. Connect the SUMI-cards to CN1002 and CN10 on the system board.

5. Place the selectable bay cover in the correct position and fixed it with the three M2.5x6 black flat-head screws.

6. Fasten the three M2.5x4 screws and fix the system board and I/O board to the base cover.

Satellite M20 Maintenance Manual 4-59

4 Replacement Procedures 4.18 Membrane Switch

4.18 Membrane Switch

Removing the Membrane Switch

Remove the membrane switch according to the following procedures and Figure 4-41.

1. Remove the three M2.5x4 black flat-head screws.

2. Remove the membrane switch.

Figure 4-41 Removing the membrane switch

Installing the Membrane Switch

Install the membrane switch according to the following procedures and Figure 4-41.

1. Place the membrane switch in the correct position.

2. Fix it with the three M2.5x4 black flat-head screws.

4-60 Satellite M20 Maintenance Manual

4.19 Samsung 14.1-inch FL 4 Replacement Procedures

4.19 Samsung 14.1-inch FL

Removing the Samsung 14.1-inch FL tube

Remove the Samsung 14.1-inch FL tube according to the following procedures and Figures

4-42 to 4-49.

1. Flip the LCD module over and remove the PCB cover and three pieces of tape.

CAUTION: Use care not to damage the PCB.

Figure 4-42 Removing the PCB cover and tape

Satellite M20 Maintenance Manual 4-61

4 Replacement Procedures 4.19 Samsung 14.1-inch FL

2. Remove the two screws for fixing the power supply board.

CAUTION: Use care not to damage the PCB.

Source PCB

Screw Screw

Figure 4-43 Removing the two screws for fixing the power supply board

4-62 Satellite M20 Maintenance Manual

4.19 Samsung 14.1-inch FL 4 Replacement Procedures

3. Release the 18 hooks and remove the upper chassis from the frame. There are six hooks at the top, four hooks on each of the left- and right-hand sides, and four hooks at the bottom.

1st

Top hooks

2nd

3rd

Figure 4-44 Releasing the 18 hooks

Side hooks

Bottom hooks

Satellite M20 Maintenance Manual 4-63

4 Replacement Procedures

4. Remove the panel assembly from the backlight assembly.

CAUTION: Use care not to damage the TCP during working.

4.19 Samsung 14.1-inch FL

TCP

Panel assembly

Backlight assembly

Figure 4-45 Removing the panel assembly

4-64 Satellite M20 Maintenance Manual

4.19 Samsung 14.1-inch FL

5. Remove the two clips.

6. Remove these:

Prism sheet

Diffuser sheet

Light guide plate (LGP)

Reflective sheet

Clip

4 Replacement Procedures

Clip

B/L sheets

Figure 4-46 Removing the clips and backlight sheets

Satellite M20 Maintenance Manual 4-65

4 Replacement Procedures 4.19 Samsung 14.1-inch FL

7. Remove the two screws for fixing the back cover of the FL tube.

FL cover back

Screw

Screw

Figure 4-47 Removing the screws for fixing the FL tube back cover

8. Disconnect the ground wire of the FL tube from the frame.

4-66

Frame

GND wire

Hot wire

Figure 4-48 Disconnecting the FL tube ground wire

Satellite M20 Maintenance Manual

4.19 Samsung 14.1-inch FL

9. Remove the FL tube from the frame.

4 Replacement Procedures

FL assembly

Frame

Figure 4-49 Removing the FL tube

Satellite M20 Maintenance Manual 4-67

4 Replacement Procedures 4.19 Samsung 14.1-inch FL

Installing the Samsung 14.1-inch FL tube

Install the Samsung 14.1-inch FL tube according to the following procedures and Figures 4-42 to 4-49.

1. Place the FL tube on the correct location in the frame.

2. Connect the ground wire to the frame.

3. Fix the back cover of the FL tube with the two screws.

4. Attach these:

Reflective sheet

Light guide plate

Diffuser sheet

Prism sheet

5. Fasten the two clips.

6. Place the panel assembly on the correct location in the backlight assembly.

7. Place the upper chassis on the frame. Fit the hooks into the holes. There are four hooks at the bottom, four hooks on each of the left- and right-hand sides, and six hooks at the top.

8. Fix the power supply board with the two screws.

9. Attach the PCB cover and three pieces of tape.

4-68 Satellite M20 Maintenance Manual

4.20 Toshiba 14.1-inch FL 4 Replacement Procedures

4.20 Toshiba 14.1-inch FL

Replace the Toshiba 14.1-inch FL tube according to the following procedures and Figures 4-50 to 4-61.

1. Attach a protective sheet to the display screen of the module.

2. Flip the module over and place it on a flat surface that is free of foreign objects.

3. In the order ①, ②, and ③ shown in Figure 4-50, remove the tape for fixing the FL tube cable, two pieces of tape on the bezel that are close to the FL tube, and the X-PCB insulation sheet.

CAUTION:

1. Use care not to damage the TAB.

2. Leave the insulation sheet on the bezel to allow the reuse of the sheet.

3

1

2 2

Figure 4-50 Removing the tape and insulation sheet

Satellite M20 Maintenance Manual 4-69

4 Replacement Procedures 4.20 Toshiba 14.1-inch FL

4. Spread out the insulation sheet without detaching it from the side of the bezel, as shown in Figure 4-51.

5. In the order ① and ② shown in Figure 4-51, remove the screws from the left- and right-hand sides of the module.

CAUTION: To unfasten the screws, use an insert bit of point size 0 for Philips screwdrivers.

ル 製品 ラベ

Product label

2

2

2

2

FL disposal label

1

1

1

1

Figure 4-51 Removing the screws

4-70 Satellite M20 Maintenance Manual

4.20 Toshiba 14.1-inch FL 4 Replacement Procedures

6. Without removing the insulation tape, flip the module over again so that the display screen can face up.

7. Release the latches of the bezel and frame. (On the sides, there are five latches in the upper area and two latches in the lower area.)

8. Gently remove the double-sided tape from the cell at the reverse side of the bottom of the bezel and remove the bezel.

9. Remove the double-sided tape remaining at the bottom of the cell and on the reverse side of the bezel.

CAUTION: Do not damage the TAB when releasing the latches on the upper area.

When removing the bezel, gently remove the top double-sided tape at the bottom of the surface of the bezel to prevent cell damage. Use care not to deform the bezel.

1

2

Figure 4-52 Removing the double-sided tape

Satellite M20 Maintenance Manual 4-71

4 Replacement Procedures

10. Spread out the PCB horizontally, as shown in Figure 4-53.

CAUTION: Use care not to damage the TAB.

4.20 Toshiba 14.1-inch FL

1

Figure 4-53 Spreading out the PCB horizontally

4-72 Satellite M20 Maintenance Manual

4.20 Toshiba 14.1-inch FL 4 Replacement Procedures

11. Remove the cell of the PCB assembly from the backlight assembly, as indicated by ① in Figure 4-54. Completely remove the double-sided tape remaining on the reverse side of the cell.

CAUTION: On the cell, three areas are bonded to the frame with the double-sided tape (as shown in Figure 4-54, one area is at the top, and two areas are at the bottom of both sides).

Remove the cell gently, taking care not to damage it.

Use care not to peel off the masking tape in the three areas on the cell.

1

両面テープ3箇所はがしながら

Remove the cell by peeling off the three pieces of double-sided tape.

Figure 4-54 Removing the cell of the PCB assembly

Satellite M20 Maintenance Manual 4-73

4 Replacement Procedures 4.20 Toshiba 14.1-inch FL

12. Attach the double-sided tape to the reverse side of the bezel, as shown in Figure 4-55.

The end of tape must not go beyond the

Requirements for attaching

両面テープ貼り規格

Tape must not go beyond Double-sided tape

The end of tape must not go beyond the opening of bezel.

Figure 4-55 Attaching double-sided tape to the bezel's reverse side

4-74 Satellite M20 Maintenance Manual

4.20 Toshiba 14.1-inch FL 4 Replacement Procedures

13. Inspect the replacement backlight according to Figure 4-56.

The frame must not be overlaid with the

プリズムシート類がフレームに prism sheet, etc.

The frame must not be overlaid with the

フレームに prism sheet, etc.

The sheet must not be

The sheet must not be

The sheet must not be

Align the tape with the rib of frame.

フレームのリブに突きあてて貼る

The frame must not be overlaid.

The frame must not be

A

Figure 4-56 Inspecting the replacement backlight

Satellite M20 Maintenance Manual 4-75

4 Replacement Procedures 4.20 Toshiba 14.1-inch FL

14. Remove the paper (coated with a mold release) from the double-sided tape in the three areas on the replacement backlight unit. The areas are at the top and on both sides. See

Figure 4-57.

15. Turn the backlight on.

16. Check that the backlight is free of dust, foreign objects, or damage. Perform this check also for the reverse side of the cell. Then install the cell of the PCB assembly in the backlight unit.

CAUTION: Align the top left corner of the cell with the corresponding corner of the backlight unit, as indicated by

in Figure 4-57.

Use care not to damage the TAB.

2

4-76

1

Figure 4-57 Removing the paper coated with a mold release

Satellite M20 Maintenance Manual

4.20 Toshiba 14.1-inch FL 4 Replacement Procedures

17. Fold down the TAB (X-PCB) toward the reverse side of the backlight unit, as shown in

Figure 4-58.

CAUTION: Use care not to damage the TAB.

1

Figure 4-58 Folding down the TAB

18. Start installing the bezel in the upward direction until it stops at the top left corner.

NOTE: The GND-CU and lamp reflector on the left-hand side must not go beyond the edges of the bezel.

Use care not to damage the cables and TAB.

The bezel latches must be engaged (there are five latches on the top edge, and two latches on the bottom edge).

Satellite M20 Maintenance Manual 4-77

4 Replacement Procedures 4.20 Toshiba 14.1-inch FL

2

Next, fit the bezel’s edge close to the TAB.

Close the five latches.

2

2

2

2

1

The fold of GND-cu must not go beyond the bezel’s edge.

The fold of reflector must not go beyond the bezel’s edge.

First, fit the bezel’s edge close to the lamp.

Use care not to damage the cable.

Figure 4-59 Aligning the bezel

19. Fasten the four screws on the left edge in the order ⑤, ⑥, ⑦, and ⑧ shown in Figure

4-59.

20. Fasten the four screws on the right edge in the order ①, ②, ③, and ④ shown in Figure

4-59.

CAUTION: Fasten the screws in the orders shown in Figure 4-60. No loose fastening is allowed.

The tightening torque must not exceed 0.147

N・

m (1.5kgf

cm) for all the eight screws.

For the Philips screwdrivers, use an insert bit of point size 0.

4-78 Satellite M20 Maintenance Manual

4.20 Toshiba 14.1-inch FL

Fasten the eight M2

×

2.2

4 Replacement Procedures

1

2

3

4

5

6

7

8

Figure 4-60 Fixing the bezel

21. Attach the PCB insulation sheet (one location).

22. Attach the tape for the bezel to the bottom area close to the lamp (two locations).

23. Attach the tape for fixing the FL tube cable (one location).

CAUTION: When attaching tape and insulation sheets, use care not to damage the TAB and lamp cable connections.

Satellite M20 Maintenance Manual 4-79

4 Replacement Procedures

1

The frame must not be overlaid with the PCB.

1

4.20 Toshiba 14.1-inch FL

pressing it so that the bezel may not "fly".

2

The tape edge must not protrude

2

The tape edge must not protrude from the surface of the module.

4-80

Requirements for attachment:

The tape edge must not go beyond the bezel's edge.

5

Requirements for attachment:

The tape edge must not go

ゴムキャップ:

ケーブル引き出し口を覆うこと

Rubber cap:

Must cover the opening for the cable.

Figure 4-61 Attaching the insulation sheet and tape

Satellite M20 Maintenance Manual

4.21 Sharp 14.1-inch FL 4 Replacement Procedures

4.21 Sharp 14.1-inch FL

Replace the Sharp 14.1-inch FL tube according to the following procedures and Figures 4-62 to 4-71.

CAUTION: Wear fingerstalls during working to prevent contamination and damage of the liquid crystal display.

1. Flip the module over and remove the protective cover S (A), protective cover G (B), aluminum tape (C), tape for lead fixing (D), and retention tape (H).

Do not remove the shield tape (I) completely (leave the tape attached partially).

Use care not to damage the TCP and chips. Discard the removed tapes.

Figure 4-62 Removing the protectives cover and tape

Satellite M20 Maintenance Manual 4-81

4 Replacement Procedures

2.

Remove the screws (E) on both sides.

4.21 Sharp 14.1-inch FL

The maximum allowed releasing torque is

0.1078N

・ m (1.1kgf

・ cm).

Figure 4-63 Removing the screws from the sides

3. Flip the module over again (with the top of the module facing up) and remove the two clips that are close to the lamp.

Clips

4-82

Figure 4-64 Removing the clips close to the lamp

Satellite M20 Maintenance Manual

4.21 Sharp 14.1-inch FL 4 Replacement Procedures

4.

Using the U-shaped edge of the bezel as a "hinge," raise the edge of the bezel from which the clips have been removed. Then remove the bezel. Peel off the tape for

GND wire fixing (J).

U-shaped edge of the bezel

Tape for ground wire fixing (J)

Figure 4-65 Removing the bezel

5. Flip the bezel over and remove the two screws (E) and lamp cover (F). Then replace the lamp unit (G) with a new one.

M axim um allowed releasing torque is

0.1078N

・ m (1.1kgf

・ cm ).

Figure 4-66 Removing the lamp cover

Satellite M20 Maintenance Manual 4-83

4 Replacement Procedures 4.21 Sharp 14.1-inch FL

6. Attach the lamp cover (F) and attach the shield tape to the lamp cover after folding it.

Then fix the lamp cover with the two screws (E).

The attached lamp cover must not cover the heads of the engaging pins.

Around the opening for extracting the lead, the edge of the P chassis should go beyond the edge of lamp cover.

Engaging pin

Maximum allowed tightening torque is

0.1176N

・ m (1.2kgf

・ cm).

Engaging pin

Fold here

Figure 4-67 Replacing the lamp unit

7. Fix the GND lead with the tape.

8. Check that the guide rib is not overlaid with the panel.

9. After fitting the U-shaped side of the bezel to the P chassis, attach the bezel by pressing the two clips close to the lamp into place.

4-84 Satellite M20 Maintenance Manual

4.21 Sharp 14.1-inch FL

Clips

4 Replacement Procedures

U-shaped edge of the bezel

Figure 4-68 Attaching the bezel

10. Fasten the five screws (E) on both sides. Check that the two clip sare engaged in place firmly.

Maximum allowed tightening torque is

0.1176N

・ m (1.2kgf

・ cm).

Clips

Figure 4-69 Fastening the screws on both sides

Satellite M20 Maintenance Manual 4-85

4 Replacement Procedures 4.21 Sharp 14.1-inch FL

11. Attach the protective cover S (A), protective cover G (B), aluminum tape (C), and tape for lead fixing (D), all of which must be new ones.

Attach the protective cover (A) then cover (B), using the engaging pins as the guide.

Fold the ends of the covers toward the side of the bezel.

• When attaching the aluminum tape (C)

− Align a longer side with the marking on the lamp cover on the reverse side of the bezel.

− Align a shorter side with the edge of the lamp cover.

• When attaching the tape for lead fixing (D)

• Align a longer side with the marking on the lamp cover on the reverse side of the bezel.

− Align a shorter side with the location where the head of the screw is covered.

• When attaching the retention tape (H)

− Align both a longer and a shorter sides with the rectangular hole.

Engaging pins

Rectangular hole

4-86

Figure 4-70 Attaching the protective cover and tapes

Satellite M20 Maintenance Manual

4.21 Sharp 14.1-inch FL 4 Replacement Procedures

12.

Upon completion of the assembly, perform visual inspections, as shown in Figure 4-90.

Engagement

Engagement Attachment

Attachment

Screw

Screw

Engagement

Engagement

Screw

Screw

Damage

Deformation

Attachment

Engagement Engagement

Engagement

Engagement

Attachment

Figure 4-71 Visual inspections

Satellite M20 Maintenance Manual 4-87

6000 1

Appendices

Appendices

App-ii Satellite M20 Maintenance Manual

Appendix Contents

Appendices

Appendix A Handling the LCD Module .......................................................................... A-1

Appendix B Board Layout ................................................................................................ B-1

B.1

B.2

B.3

B.4

System Board Front View ..................................................................................... B-1

System Board Back View...................................................................................... B-3

Power Board Front View....................................................................................... B-5

Power Board Back View ....................................................................................... B-6

Appendix C Pin Assignments............................................................................................ C-1

C.5

C.6

C.7

C.8

C.1

C.2

C.3

C.4

CN504 Memory Connector (1) (200-Pin)............................................................. C-1

CN505 Expansion Memory Slot B Connector (2) (200-Pin)................................ C-3

CN7 LCD/FL Inverter Connector (40-Pin)........................................................... C-6

CN6 External Monitor Connector (15-Pin)........................................................... C-7

CN14 PC Card Slot Connector (150-Pin) ............................................................. C-8

CN10 Sound Board I/F Connector (30-Pin)........................................................ C-10

CN15 Cooling Module Connector (3-Pin) .......................................................... C-10

CN18 Keyboard Connector (34-Pin)................................................................... C-11

C.9 CN501 MDC Connector (30-Pin) ....................................................................... C-12

C.10 CN502 MDC I/F Connector ............................................................................... C-12

C.11 CN17 Selectable Bay Connector (72-Pin) .......................................................... C-13

C.12 CN16 HDD Connector (44-Pin).......................................................................... C-14

C.13 CN5 Parallel Connector (25-Pin) ........................................................................ C-15

C.14 CN3 Serial Connector (9-Pin) ............................................................................. C-15

C.15 CN11 DC IN Connector (4-Pin).......................................................................... C-15

C.16 CN22 Power Supply Board I/F Connector (15-Pin) ........................................... C-16

C.17 CN21 Power Supply Board I/F Connector (14-Pin) ........................................... C-16

C.18 CN20 Power Supply Connector .......................................................................... C-16

C.19 CN23 Power Supply Connector .......................................................................... C-17

C.20 CN1 PS/2 Connector (6-Pin)............................................................................... C-17

Satellite M20 Maintenance Manual App-iii

Appendices

C.21 JACK1 TV OUT Connector (3-Pin) ....................................................................C-17

C.22 CN2 USB Connector (8-Pin)................................................................................C-17

C.23 CN19 Membrane Connector (6-Pin) ....................................................................C-18

C.24 CN4 RJ45 (8-Pin+2LED)/RJ11 (2-Pin) Connector .............................................C-18

C.25 CN12 MINI PCI Connector (124-Pin) .................................................................C-19

C.26 CN8 Internal Left Speaker Connector (3-Pin) .....................................................C-21

C.27 CN9 Internal Right Speaker Connector (2-Pin) ...................................................C-21

C.28 CN503 Expansion Docking connecter B (240 pin + power) ..............................C-22

C.29 CN520 RTC Battery Connector (2-Pin)...............................................................C-25

C.30 JACK1001 Headphone Connector (8-Pin)...........................................................C-25

C.31 JACK1000 Microphone Connector (8-Pin) .........................................................C-26

C.32 CN1000 Interface Connector (30-Pin) .................................................................C-26

C.33 CN1001 IR Connector (10-pin)............................................................................C-26

Appendix D Keyboard Scan/Character Codes................................................................ D-1

Appendix E Key Layout .....................................................................................................E-1

E.1

E.2

United States (US) Keyboard ................................................................................E-1

United Kindom (UK) Keyboard ............................................................................E-1

Appendix F Wiring Diagrams ...........................................................................................F-1

F.1 Parallel Port Wraparound Connector.........................................................................F-1

F.2 Serial Port Wraparound Connector............................................................................F-1

F.3 Serial Port Direct Cable (9-Pin to 9-Pin) ...................................................................F-2

F.4 Serial Port Direct Cable (9-Pin to 25-Pin) .................................................................F-2

App-iv Satellite M20 Maintenance Manual

Appendices

Appendix G BIOS Rewrite Procedures ........................................................................... G-1

Appendix H EC/KBC Rewrite Procedures...................................................................... H-1

Satellite M20 Maintenance Manual App-v

Appendices

Figures

Figure B-1 System Board layout (front) ..............................................................................B-1

Figure B-2 System Board layout ( back ) ............................................................................B-3

Figure E-1 US keyboard ......................................................................................................E-1

Figure E-2 UK keyboard......................................................................................................E-1

Figure E-3 Korea keyboard..................................................................................................E-2

Figure F-1 Parallel port wraparound connector....................................................................F-1

Figure F-2 Serial port wraparound connector.......................................................................F-1

Figure F-3 Serial port direct cable (9-Pin to 9-Pin)..............................................................F-2

Figure F-2 Serial port direct cable (9-Pin to 25-Pin)............................................................F-2

Tables

Table B-1 System board ICs and connectors (front) ......................................................B-2

Table B-2 System board ICs and connectors (back).......................................................B-4

Table C-1 Memory connector (1) pin assignments (200-PIN) .......................................C-1

Table C-2 Expansion memory slot B connector (2) pin assignments (200-pin).............C-4

Table C-3 LCD/FL inverter connector pin assignments (40-pin)...................................C-7

Table C-4 External monitor connector pin assignments (15-pin)...................................C-7

Table C-5 PC card slot connector pin assignments (150-pin) ........................................C-8

Table C-6 Sound board I/F connector pin assignments (30-pin)..................................C-10

Table C-7 Cooling module connector pin assignments (3-pin) ....................................C-10

Table C-8 Keyboard connector pin assignments (34-pin) ............................................C-11

Table C-9 MDC connector pin assignments (30-Pin)...................................................C-12

Table C-10 MDC I/F connector pin assignments (2-Pin)...............................................C-12

Table C-11 Selectable bay connector pin assignments (72-Pin) ....................................C-13

Table C-12 HDD connector pin assignments (44-Pin) ...................................................C-14

Table C-13 Parallel connector pin assignments (25-Pin) ...............................................C-15

Table C-14 Serial connector pin assignments (9-Pin) ....................................................C-15

Table C-15 DC IN connector pin assignments (4-Pin)...................................................C-15

Table C-16 Power supply board I/F connector pin assignments (15-Pin) ......................C-16

App-vi Satellite M20 Maintenance Manual

Appendices

Table C-17 Power supply board I/F connector pin assignments (14-Pin) ..................... C-16

Table C-18 CN20 Power supply Connector pin assignments (20-Pin) ......................... C-16

Table C-19 CN23 Power Supply Connector pin assignments (20-Pin)......................... C-17

Table C-20 PS/2 connector pin assignments (6-Pin) ..................................................... C-17

Table C-21 TV OUT connector pin assignments (3-Pin) .............................................. C-17

Table C-22 USB connector pin assignments (8-Pin) ..................................................... C-17

Table C-23 Membrane connector pin assignments (6-Pin) ........................................... C-18

Table C-24 RJ45 (8-Pin+2LED)/RJ11 (2-Pin) connector pin assignments................... C-18

Table C-25 MINI PCI connector pin assignments (124-Pin) ........................................ C-19

Table C-26 Internal left speaker connector pin assignments (3-Pin)............................. C-21

Table C-27 Internal right speaker connector pin assignments (2-Pin) .......................... C-21

Table C-28 Expansion Docking connector B (240 pin + power) .................................. C-22

Table C-29 RTC battery connector pin assignments (2-Pin)......................................... C-25

Table C-30 Headphone connector pin assignments (8-Pin) .......................................... C-25

Table C-31 Microphone connector pin assignments (8-Pin) ......................................... C-26

Table C-32 CN1000 Interface Connector pin assignments (30-Pin)............................. C-26

Table C-33 CN1001 IR Connector pin assignments (10-Pin)........................................ C-26

Table D-1 Scan codes (set 1 and set 2) .......................................................................... D-1

Table D-2 Scan codes with left Shift key....................................................................... D-5

Table D-3 Scan codes in Numlock mode....................................................................... D-6

Table D-4 Scan codes with Fn key................................................................................. D-6

Table D-5 Scan codes in overlay mode.......................................................................... D-7

Table D-6 No.124 key scan code ................................................................................... D-7

Table D-7 No.126 key scan code ................................................................................... D-8

Satellite M20 Maintenance Manual App-vii

Apx. A Handling the LCD Module Appendices

Appendix A

Appendix A Handling the LCD Module

Precautions for handling the LCD module

The LCD module can be easily damaged during assembly or disassembly. Observe the following precautions when handling the LCD module:

1. When installing the LCD module in the LCD cover, be sure to seat it so that it is properly aligned and maximum visibility of the display is maintained.

2. Be careful to align the four holes at the right side and left side of the LCD module with the corresponding holes in the LCD cover before securing the module with four screws. Do not force the module into place, because stress can affect its performance.

Also, the panel’s polarized surface is easily scarred, so be carefully when handling it.

Satellite M20 Maintenance Manual A-1

Appendices

Apx. A Handling the LCD Module

3. If the panel’s surface gets dirty, wipe it with cotton or a soft cloth. If it is still dirty, try breathing on the surface to create a light condensate and wipe it again.

If the surface is very dirty, we recommend a CRT cleaning agent. Apply the agent to a cloth and then wipe the panel’s surface. Do not apply cleanser directly to the panel.

Also, never scratch the surface.

4. If water or other liquid is left on the panel’s surface for a long period, it can change the screen’s tint or stain it. Be sure to quickly wipe off any liquid.

A-2

Satellite M20 Maintenance Manual

Apx. A Handling the LCD Module Appendices

5. Glass is used in the panel, so be careful not to drop it or let it strike a hard object, which could cause breakage or cracks.

6. CMOS-LSI circuits are used in the module, so guard against damage from electrostatic discharge. Be sure to wear a wrist or ankle ground when handling the module.

Satellite M20 Maintenance Manual A-3

Appendices

Apx. A Handling the LCD Module

7. Do not expose the module to direct sunlight or strong ultraviolet rays for long periods.

8. Do not store the module at temperatures below specifications. Cold can cause the liquid crystals to freeze, lose their elasticity or otherwise suffer damage.

A-4

Satellite M20 Maintenance Manual

Apx. A Handling the LCD Module Appendices

9. Do not disassemble the LCD module. Disassembly can cause malfunctions.

10. If you transport the module, do not use packing material that contains epoxy resin

(amine) or silicon glue (alcohol or oxime). These materials can release gas that can damage the panel’s polarization.

Satellite M20 Maintenance Manual A-5

D

E

F

G

H

I

J

K

L

A

B

C

Apx. B Board Layout

Appendix B

Appendix B Board Layout

B.1 System Board Front View

Figure B-1 System Board layout (front)

d c b a Z

N

M

O

Appendices

Y X

P

W

V

U

T

R

S

Q

Satellite M20 Maintenance Manual B-1

Appendices Apx. B Board Layout

Table B-1 System board ICs and connectors (front)

Number Name Mark

B

C

D

E

F

G

H

J

K

M

O

P

Q

R

S

T

U

V

W

Z a b

X

Y c d

SW1000

CN1001

CN1000

CN17

CN23

CN20

CN19

Wireless communication switch

Interface connector

Interface Connector

Selectable bay Connector

Power supply Connector

Power supply Connector

Membrane Connector

CN21

CN22

CN15

Power supply Connector

Power supply Connector

Cooling module Connector

CN11

CN24

CN6

CN5

CN12

CN14

CN3

CN2

CN1

CN8

JACK1

CN7

CN9

CN10

CN1002

CN14

DC IN

ITP Port connector

External monitor connector

Parallel connector

MINI PCI connector

RJ45/RJ11 connector

Serial connector

USB connector

PS/2 Connector

Internal left speaker connector

TV OUT connector

LCD/FL INVERTER connector

Internal right speaker connector

Sound board I/F connector

Sound board I/F connector

PC CARD SLOT connector

B-2 Satellite M20 Maintenance Manual

Apx. B Board Layout

B.2 System Board Back View

Figure B-2 System Board layout ( back )

A’

B’

C’

D’

E’

Table B-2 System board ICs and connectors (back)

Appendices

H’

G’

F’

Satellite M20 Maintenance Manual B-3

F’

G’

H’

Appendices

Mark

A’

B’

C’

Number

CN505

CN504

JACK1001

Name

Expansion memory connector slot B

Memory connector

HEAD PHONE Connector

Apx. B Board Layout

CN500

CN502

CN503

BIOS Socket

MDC I/F Connector

Expansion docking Connector B

B-4 Satellite M20 Maintenance Manual

Apx. B Board Layout

B.3 Power Board Front View

A

Appendices

B C

Satellite M20 Maintenance Manual B-5

Appendices

B.4 Power Board Back View

Apx. B Board Layout

Mark

A

B

C

D

E

D

E

Table -3 Power supply board ICs and connectors

Number

CN1

CN522

CN521

CAB1

CN2

Name

Main battery connector

System board I/F Connector

System Board I/F Connector

System board I/F wiring

SUB battery connector

B-6 Satellite M20 Maintenance Manual

Apx. C Pin Assignments

Appendices

Appendix C

Appendix C Pin Assignments

System Board

C.1 CN504 Memory Connector (1) (200-Pin)

Table C-1 Memory connector (1) pin assignments (200-PIN)

Pin

No.

Signal Name I/O Pin

No.

Signal Name I/O

1 SM_VREF - 2 SM_VREF -

11 M_DQS_R(0) I/O 12 M_DM_R(0) -

13 M_DATA_R_(2) I/O 14 M_DATA_R_(6) I/O

17 M_DATA_R_(3) I/O 18 M_DATA_R_(7) I/O

25 M_DQS_R(1) I/O 26 M_DM_R(1) -

29 M_DATA_R_(10) I/O 30 M_DATA_R_(14) I/O

31 M_DATA_R_(11) I/O 32 M_DATA_R_(15) I/O

35 M_CLK_DDR0 I/O 36 +V2.5

37 M_CLK_DDR0# I/O 38 GND

-

-

41 M_DATA_R_(16) I/O 42 M_DATA_R_(20) I/O

43 M_DATA_R_(17) I/O 44 M_DATA_R_(21) I/O

47 M_DQS_R(2) I/O 48 M_DM_R(2) -

49 M_DATA_R_(18) I/O 50 M_DATA_R_(22) I/O

53 M_DATA_R_(19) I/O 54 M_DATA_R_(23) I/O

55 M_DATA_R_(24) I/O 56 M_DATA_R_(28) I/O

59 M_DATA_R_(25) I/O 60 M_DATA_R_(29) I/O

Satellite M20 Maintenance Manual C-1

Appendices

Apx. C Pin Assignments

Pin No. Signal Name I/O Pin

No.

Signal Name I/O

61 M_DQS_R(3) I/O 62 M_DM_R(3) -

65 M_DATA_R_(26) I/O 66 M_DATA_R_(30) I/O

67 M_DATA_R_(27) I/O 68 M_DATA_R_(31) I/O

C-2

99 M_A_FR_(12) I/O 100 M_A_FR_(11) I/O

101 M_A_FR_(9) I/O 102 M_A_FR_(8) I/O

105 M_A_FR_(7) I/O 106 M_A_FR_(6) I/O

109 M_A_FR_(3) I/O 110 M_A(2) I/O

115 M_A_FR_(10) I/O 116 M_BS1_FR# I/O

117 M_BS0_FR# I/O 118 M_RAS_FR# I/O

127 M_DATA_R_(32) I/O 128 M_DATA_R_(36) I/O

129 M_DATA_R_(33) I/O 130 M_DATA_R_(37) I/O

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

Appendices

Pin No. Signal Name

133 M_DQS_R(4)

135 M_DATA_R_(34)

I/O

I/O

I/O

Pin

No.

134

136

Signal Name

M_DM_R(4)

M_DATA_R_(38)

I/O

-

I/O

139 M_DATA_R_(35) I/O 140 M_DATA_R_(39) I/O

141 M_DATA_R_(40) I/O 142 M_DATA_R_(44) I/O

145 M_DATA_R_(41) I/O 146 M_DATA_R_(45) I/O

147 M_DQS_R(5) I/O 148 M_DM_R(5) -

151 M_DATA_R_(42) I/O 152 M_DATA_R_(46) I/O

153 M_DATA_R_(43) I/O 154 M_DATA_R_(47) I/O

163 M_DATA_R_(48) I/O 164 M_DATA_R_(52) I/O

165 M_DATA_R_(49) I/O 166 M_DATA_R_(53) I/O

169 M_DQS_R(6) - 170 M_DM_R(6) -

171 M_DATA_R_(50) I/O 172 M_DATA_R_(54) I/O

175 M_DATA_R_(51) I/O 176 M_DATA_R_(55) I/O

177 M_DATA_R_(56) I/O 178 M_DATA_R_(60) I/O

181 M_DATA_R_(57) I/O 182 M_DATA_R_(61) I/O

183 M_DQS_R(7) I/O 184 M_DM_R(7) -

187 M_DATA_R_(58) I/O 188 M_DATA_R_(62) I/O

189 M_DATA_R_(59) I/O 190 M_DATA_R_(63) I/O

193 ICH_SMDAT I/O 194 +V3S

195 ICH_SMCLK I/O 196 GND

-

-

Satellite M20 Maintenance Manual C-3

Appendices

Apx. C Pin Assignments

C.2 CN505 Expansion Memory Slot B Connector (2) (200-Pin)

Table C-2 Expansion memory slot B connector (2) pin assignments (200-pin)

Pin

No.

Signal Name I/O Pin

No.

Signal Name I/O

1 SM_VREF - 2 SM_VREF -

11 M_DQS_R(0) I/O 12 M_DM_R(0) -

13 M_DATA_R_(2) I/O 14 M_DATA_R_(6) I/O

17 M_DATA_R_(3) I/O 18 M_DATA_R_(7) I/O

25 M_DQS_R(1) I/O 26 M_DM_R(1) -

29 M_DATA_R_(10) I/O 30 M_DATA_R_(14) I/O

31 M_DATA_R_(11) I/O 32 M_DATA_R_(15) I/O

35 M_CLK_DDR3 I/O 36 +V2.5

37 M_CLK_DDR3# I/O 38 GND

-

-

41 M_DATA_R_(16) I/O 42 M_DATA_R_(20) I/O

43 M_DATA_R_(17) I/O 44 M_DATA_R_(21) I/O

47 M_DQS_R(2) I/O 48 M_DM_R(2) -

49 M_DATA_R_(18) I/O 50 M_DATA_R_(22) I/O

53 M_DATA_R_(19) I/O 54 M_DATA_R_(23) I/O

55 M_DATA_R_(24) I/O 56 M_DATA_R_(28) I/O

59 M_DATA_R_(25) I/O 60 M_DATA_R_(29) I/O

C-4

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

Appendices

Pin No. Signal Name I/O Pin

No.

Signal Name I/O

61 M_DQS_R(3) I/O 62 M_DM_R(3) -

65 M_DATA_R_(26) I/O 66 M_DATA_R_(30) I/O

67 M_DATA_R_(27) I/O 68 M_DATA_R_(31) I/O

127 M_DATA_R_(32) I/O 128 M_DATA_R_(36) I/O

129 M_DATA_R_(33) I/O 130 M_DATA_R_(37) I/O

Satellite M20 Maintenance Manual C-5

Appendices

Apx. C Pin Assignments

Pin No. Signal Name

133 M_DQS_R(4)

135 M_DATA_R_(34)

I/O

I/O

I/O

Pin

No.

134

136

Signal Name

M_DM_R(4)

M_DATA_R_(38)

I/O

-

I/O

139 M_DATA_R_(35) I/O 140 M_DATA_R_(39) I/O

141 M_DATA_R_(40) I/O 142 M_DATA_R_(44) I/O

145 M_DATA_R_(41) I/O 146 M_DATA_R_(45) I/O

147 M_DQS_R(5) I/O 148 M_DM_R(5) -

151 M_DATA_R_(42) I/O 152 M_DATA_R_(46) I/O

153 M_DATA_R_(43) I/O 154 M_DATA_R_(47) I/O

163 M_DATA_R_(48) I/O 164 M_DATA_R_(52) I/O

165 M_DATA_R_(49) I/O 166 M_DATA_R_(53) I/O

169 M_DQS_R(6) - 170 M_DM_R(6) -

171 M_DATA_R_(50) I/O 172 M_DATA_R_(54) I/O

175 M_DATA_R_(51) I/O 176 M_DATA_R_(55) I/O

177 M_DATA_R_(56) I/O 178 M_DATA_R_(60) I/O

181 M_DATA_R_(57) I/O 182 M_DATA_R_(61) I/O

183 M_DQS_R(7) I/O 184 M_DM_R(7) -

187 M_DATA_R_(58) I/O 188 M_DATA_R_(62) I/O

189 M_DATA_R_(59) I/O 190 M_DATA_R_(63) I/O

193 ICH_SMDAT I/O 194 +V3S

195 ICH_SMCLK I/O 196 GND

-

-

C-6

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

C.3 CN7 LCD/FL Inverter Connector (40-Pin)

Table C-3 LCD/FL inverter connector pin assignments (40-pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

Appendices

25 LVD_DDCPDAT

A

- 26

-

K

N.C -

C.4 CN6 External Monitor Connector (15-Pin)

Table C-4 External monitor connector pin assignments (15-pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

15 DAC_DDCACLK

Satellite M20 Maintenance Manual C-7

Appendices

Apx. C Pin Assignments

C.5 CN14 PC Card Slot Connector (150-Pin)

Table C-5 PC card slot connector pin assignments (150-pin) (1/2)

Pin No. Signal Name I/O Pin No. Signal Name I/O

C-8

61

63

65

69

71

45

47

49

53

55

57

13

15

19

21

23

A_CADR(0)

A_CADR(1)

A_INPACK

A_WAIT#

A_RESET

I/O

I/O

I

I

I/O

14

16

20

22

24

A_BVD2

A_REG#

A_CADR(3)

A_CADR(4)

A_CADR(5)

I

I/O

I/O

I/O

I/O

27

29

31

A_CADR(6)

A_CADR(7)

A_CADR(12)

I/O

I/O

I/O

28

30

32

A_CADR(25) I/O

A_CADR(24) I/O

A_CADR(23) I/O

35 A_CADR(22) I/O 36

37 N.C -

ACARDVCC - 40

A_CADR(16) I/O

A_RDY_IREQ

I

41 A_CADR(21) I/O 42 A_WE# I/O

A_CADR(14)

A_CADR(13)

A_CADR(8)

A_IOWR#

A_IORD

A_VS1

I/O

I/O

I/O

I/O

I/O

I/O

46

48

50

54

56

58

A_CADR(19)

A_CADR(18)

A_CADR(17)

A_CADR(10)

I/O

I/O

I/O

A_CADR(11) I/O

A_OE# I/O

I/O

A_CE2#

A_CDAT(7)

A_CDAT(6)

A_CDAT(12)

A_CDAT(11)

I/O

I/O

I/O

I/O

I/O

62

64

66

70

72

A_CDAT(15) I/O

A_CDAT(14) I/O

A_CDAT(13) I/O

A_CDAT(4)

A_CDAT(3)

I/O

I/O

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

Table C-5 PC card slot connector pin assignments (150-pin) (2/2)

Pin No. Signal Name I/O Pin No.

Signal Name I/O

Appendices

83 B_CDAT(1) GND -

87

89

B_BVD1

B_BVD2

I

I

88

90

B_CADR(0)

B_CADR(1)

I/O

I/O

93

95

97

101

103

B_CADR(2)

B_CADR(3)

B_VS2

B_CADR(25)

I/O

I/O

I/O

I/O

94

96

102

104

B_INPACK

B_WAIT#

B_CADR(6)

B_CADR(7)

I

I/O

B_CADR(4) I/O 98 B_RESET I/O

B_CADR(5) GND -

I/O

I/O

105 B_CADR(24) I/O 106 B_CADR(12) I/O

107 GND -

109

111

B_CADR(15)

B_CADR(16)

I/O

I/O

110

112

B_CADR(22) I/O

BCARDVPP -

113 N.C - 114 BCARDVCC -

115 B_CADR(21) I/O

119

121

123

B_CADR(20)

B_CADR(19)

B_CADR(18)

I/O

I/O

I/O

120

122

124

B_CADR(14) I/O

B_CADR(13) I/O

B_CADR(8) I/O

125 GND -

127 B_CADR(9) I/O 128 B_IOWR# I/O

129

131

B_CADR(11)

B_OE#

I/O

I/O

130

132

B_IORD

B_VS1

I/O

I/O

133 GND -

135 B_CE1# I/O 136 B_CE2# I/O

137

139

B_CDAT(15)

B_CDAT(14)

I/O

I/O

138

140

B_CDAT(7)

B_CDAT(6)

I/O

I/O

141 GND -

143 B_CDAT(5) I/O 144 B_CDAT(12) I/O

145

147

B_CDAT(4)

B_CDAT(3)

I/O

I/O

146

148

B_CDAT(11) I/O

B_CD1# I

Satellite M20 Maintenance Manual C-9

Appendices

Apx. C Pin Assignments

C.6 CN10 Sound Board I/F Connector (30-Pin)

Table C-6 Sound board I/F connector pin assignments (30-pin)

Pin No. Signal Name

1

3

5

7

9

11

13

+3ALWAYS

+V3S

+AVCC

N.C

N.C

GND

SPK_OUT_R+

I/O

I

I

-

I

I

-

-

Pin No. Signal Name I/O

2

4

6

8

10

12

14

+3ALWAYS

+V3S

+AVCC

N.C

N.C

GND

SPK_OUT_L+

I

I

I

I

-

-

-

17

19

AREF

VOLUME

-

I

18

20

GND

GND

21 SE_HP# I 22 GND -

23 MIC 24 GND

25

27

29

KILL_SWCH

IR_TX

IR_SD

-

O

26

28

30

GND

IR_RX

GND

-

O

C.7 CN15 Cooling Module Connector (3-Pin)

Table C-7 Cooling module connector pin assignments (3-pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

3

C-10

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

Appendices

C.8 CN18 Keyboard Connector (34-Pin)

Table C-8 Keyboard connector pin assignments (34-pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

3 GND(IPSGND) IPSX I

13

15

17

19

21

23

25

27

29

7

9

11

SCAN OUT(15)

SCAN IN(7)

O

I

SCAN OUT(13) O

SCAN IN(5) I

SCAN OUT(11) O

SCAN IN(3)

SCAN IN(1)

SCAN OUT(8)

SCAN IN(0)

SCAN OUT(5)

SCAN OUT(3)

SCAN OUT(1)

O

O

O

I

I

O

I

8

10

12

14

16

SCAN

OUT(14)

SCAN IN(6)

SCAN

OUT(12)

SCAN IN(4)

SCAN

OUT(10)

O

I

O

I

O

18

20

22

24

SCAN IN(2) I

SCAN OUT(9) O

SCAN OUT(7) O

SCAN OUT(6) O

26

28

SCAN OUT(4) O

SCAN OUT(2) O

30 SCAN OUT(0) O

32

CAPS_LED#_3

O

33

SCROLL_LED#_

3

Satellite M20 Maintenance Manual C-11

Appendices

Apx. C Pin Assignments

C.9 CN501 MDC Connector (30-Pin)

Table C-9 MDC connector pin assignments (30-Pin)

Pin No. Signal Name I/

O

Pin No. Signal Name I/O

- N.C -

22

FRAME_SYNC_ICH

I

N.C -

25

CODEC_RST#_ICH

I 26

C.10 CN502 MDC I/F Connector

Table C-10 MDC I/F connector pin assignments (2-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

C-12

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

C.11 CN17 Selectable Bay Connector (72-Pin)

Table C-11 Selectable bay connector pin assignments (72-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

Appendices

9 N.C 10 N.C O

15 SBAY_IDO O 16 SBAY_ID1 O

17 SBAY_ID2 O 18 GND -

19 CD_LED# O 20 SDCS3#_3 O

21 SDA(2) O

25 +V5S_MB - 26 +V5S_MB -

27 SDA(1) O N.C -

29 IRQ15_3 I 30 GND -

31 SDDACK#_35 O 32 N.C -

33 SDIORDY_35 I 34 GND -

35 SDIOR#_3 O 36 GND -

37 SDIOW#_3 O 38

39 SDDRQ_35 I 40

GND -

GND -

47 +V5S_MB -- 48 SDD13 I/O

I/O GND -

I/O GND -

65 CD_GND - 66 GND -

67 CDAUDL I 68 CDAUDR I

Satellite M20 Maintenance Manual C-13

Appendices

Apx. C Pin Assignments

C.12 CN16 HDD Connector (44-Pin)

Table C-12 HDD connector pin assignments (44-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

1 PDRST#_3 GND O

21 PDDRQ_35 - 22 GND I

23 PDIOW#_3 - 24 GND O

25 PDIOR#_3 - 26 GND O

27 PDIORDY_35 - 28 N.C I

29 PDDACK#_35 - 30 GND O

31 IRQ14_3 - 32 N.C I

39 HDD_LED# - 40 GND I

C-14

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

C.13 CN5 Parallel Connector (25-Pin)

Table C-13 Parallel connector pin assignments (25-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

Appendices

15 ERROR# I 16 PINIT# O

17 SLCTIN# O 18 GND -

25 GND -

C.14 CN3 Serial Connector (9-Pin)

Table C-14

Serial connector pin assignments (9-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

9 RING I

C.15 CN11 DC IN Connector (4-Pin)

Table C-15 DC IN connector pin assignments (4-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

Satellite M20 Maintenance Manual C-15

Appendices

Apx. C Pin Assignments

C.16 CN22 Power Supply Board I/F Connector (15-Pin)

Table C-16 Power supply board I/F connector pin assignments (15-Pin)

Pin No. Signal Name

1 +V3ALWAYS

I/O

-

Pin No.

Signal Name

2 +V3ALWAYS

I/O

-

7 +V5ALWAYS N.C -

15 +VAC - -

C.17 CN21 Power Supply Board I/F Connector (14-Pin)

Table C-17 Power supply board I/F connector pin assignments (14-Pin)

Pin No. Signal Name I/O Pin No.

Signal Name

2 GND

I/O

-

C.18 CN20 Power Supply Connector

Table C-18 CN20 Power supply Connector pin assignments (20-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

1 +VADPTR +V5a -

BAT_LATCH_RS

T

-

11 BAT1_DATA - 12 CHG_0 -

13 DCHG_0 O 14 CHG_1 O

17 BATT_IN1 I 18 +V3AON I

19 SLP_S4#_3R I 20 RTCVCC O

C-16

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

Appendices

C.19 CN23 Power Supply Connector

Table C-19 CN23 Power Supply Connector pin assignments (20-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

3 WLON# I 4 +V5S I

5 HDD_LED# I 6 +V3 -

11 BAT1_OLED# - 12 BAT1_GLED# -

C.20 CN1 PS/2 Connector (6-Pin)

Table C-20 PS/2 connector pin assignments (6-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

3

5

GND

MOUSCK

-

I/O

4

6

C.21 JACK1 TV OUT Connector (3-Pin)

PS2VCC

EXKBCK

Table C-21 TV OUT connector pin assignments (3-Pin)

-

I/O

Pin No. Signal Name I/O Pin No. Signal Name I/O

C.22 CN2 USB Connector (8-Pin)

Table C-22 USB connector pin assignments (8-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

A3 USB_PP0_B GND -

B3 USB_PP2_B GND -

Satellite M20 Maintenance Manual C-17

Appendices

Apx. C Pin Assignments

C.23 CN19 Membrane Connector (6-Pin)

Table C-23 Membrane connector pin assignments (6-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

C.24 CN4 RJ45 (8-Pin+2LED)/RJ11 (2-Pin) Connector

Table C-24 RJ45 (8-Pin+2LED)/RJ11 (2-Pin) connector pin assignments

Pin No. Signal Name I/O Pin No. Signal Name I/O

A5

A7

A9

A11

GND

GND

LED_LAN#

LED_LANACT#

I

I

I

I

A6

A8

A10

A12

RX-

GND

+3ALWAYS

+3ALWAYS

C.25 CN12 MINI PCI Connector (124-Pin)

Table C-25 MINI PCI connector pin assignments (124-Pin) (1/2)

I

I

I

I

C-18

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

Pin No. Signal Name I/O Pin No. Signal Name I/O

Appendices

17

19

PIRQC#_3

+V3S

-

-

18

20

+V5S

PIRQB#_3

25

CLK_MINIPCI_3R

- 26 PCI_RESET#_

3

-

-

-

I/O N.C -

Satellite M20 Maintenance Manual C-19

Appendices

Apx. C Pin Assignments

Table C-25 MINI PCI connector pin assignments (124-Pin) (2/2)

Pin No. Signal Name I/O Pin No.

Signal Name I/O

47 PCI_AD(23) I/O

61 PCI_IRDY#_3 - 62 GND -

67 PCI_SERR#_3 68 PCI_STOP#_3 -

69 GND - 70 +V3S -

71 PCI_PERR#_3 72 PCI_DEVSEL#_ O

73 PCI_CB#(1) 74 GND -

81 PCI_AD(10) GND -

87 PCI_AD(7) +V3S -

99 PCI_AD(1) N.C -

C-20

123 N.C - 124 +V3 -

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

Appendices

C.26 CN8 Internal Left Speaker Connector (3-Pin)

Table C-26 Internal left speaker connector pin assignments (3-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

N.C -

C.27 CN9 Internal Right Speaker Connector (2-Pin)

Table C-27

Internal right speaker connector pin assignments (2-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

Satellite M20 Maintenance Manual C-21

Appendices

Apx. C Pin Assignments

C.28 CN503 Expansion Docking connecter B (240 pin + power) ---

Satellite M20 model no use, only TE2300 model is available.

Table C-28 Expansion Docking connector B (240 pin + power) (1/4)

Pin No. Signal Name I/O Pin No. Signal Name I/O

A1 +VADPTR - A2 GND -

A3 +VADPTR - A4 GND -

3 DOCDT1# I 4 IF_P5V -

9 DPCONF I 10 GND -

13 D_ROUT O 14 D_GOUT O

17 Reserved - 18 Reserved -

21 Reserved - 22 Reserved -

23 Reserved - 24 Reserved -

25 Reserved - 26 Reserved -

27 Reserved - 28 GND -

31 Reserved - 32 Reserved -

33 Reserved - 34 Reserved -

35 Reserved - 36 Reserved -

39 Reserved - 40 Reserved -

43 Reserved - 44 Reserved -

47 Reserved - 48 Reserved -

51 Reserved - 52 Reserved -

55 Reserved - 56 Reserved -

65

EJECTRQ# IF_P5V -

MOUSDT I/O 66 EXKBDT I/O

C-22

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

Table C-28 Expansion Docking connector B (240 pin + power) (2/4)

Pin No. Signal Name I/O Pin No. Signal Name I/O

Appendices

87 Reserved - -

123 I/O 124 IF-P5V -

125 -

129 USB_PWR_EN O 130 USB_OC#4 O

133 USB_OC#5 O 134 SHUTDOWN# -

Satellite M20 Maintenance Manual C-23

Appendices

Apx. C Pin Assignments

Table C-28 Expansion Docking connector B (240 pin + power) (3/4)

Pin No. Signal Name I/O Pin No. Signal Name I/O

151 PDATA_R(1)

I/O GND -

I/O 152 PDATA_R(2) I/O

175 +V3_ICHLAN N.C -

DOCK_I2C_DAT IF-P5V -

C-24

I/O GND -

Satellite M20 Maintenance Manual

Apx. C Pin Assignments

Table C-28 Expansion Docking connector B (240 pin + power) (4/4)

Pin No. Signal Name I/O Pin No. Signal Name I/O

Appendices

215 Reserved - 216 Reserved -

219 Reserved - 220 Reserved -

223 Reserved - 224 Reserved -

227 Reserved - 228 Reserved -

231 Reserved - 232 Reserved -

I

LED_LANACT#

235 LED_LAN# I 236 DOCDT2# I

Power Supply Board

C.29 CN520 RTC Battery Connector (2-Pin)

Table C-29 RTC battery connector pin assignments (2-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

Sound Board

C.30 JACK1001 Headphone Connector (8-Pin)

Table C-30

Headphone connector pin assignments (8-Pin)

Pin No. Signal Name

3 AB_SPK_OUT_L

+

I/O Pin No. Signal Name I/O

O 4

AB_SPK_OUT_L

+

O

N.C -

7 GND 8 GND

Satellite M20 Maintenance Manual C-25

Appendices

Apx. C Pin Assignments

C.31 JACK1000 Microphone Connector (8-Pin)

Table C-31

microphone connector pin assignments (8-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

C.32 CN1000 Interface Connector (30-Pin)

Table C-32 CN1000 Interface Connector pin assignments (30-Pin)

Pin No. Signal Name I/O Pin No. Signal Name I/O

3

5

7

GND

GND

GND

9 GND

11 GND

13 GND

-

-

17 GND -

19 GND

21 N.C

23 N.C

12

14

18

4

6

8

AB_SE_HP

AB_SPK_OUT_R

AB_SPK_OUT_L

AB_A_RIGHT_R

AB_A_LEFT_R

AB_A_LEFT

O

O

I

O

I

I

24 N.C

27 +AVCC_BOARD

29 +AVCC_BOARD

C.33 CN1001 IR Connector (10-Pin)

30 +AVCC_BOARD

Table C-33 IR connector pin assignments (10-Pin)

Pin No. Signal Name

1 +V3ALWAYS_

BOARD

I/O Pin No. Signal Name I/O

I

CH

3 +V3S_BOARD 4 +V3S_BOAR

D

O

C-26

Satellite M20 Maintenance Manual

Keyboard Scan/Character Codes Appendices

Apx. D Keyboard Scan/Character Codes

Appendix D Keyboard Scan/Character Codes

Table D-1 Scan codes (set 1 and set 2) (1/4)

Cap

No.

Code set 1 Code set 2

Keytop

Make Break Make Break

Note

01

02

03

04

05

06

‘ ~

1 !

2 @

3 #

4 $

5 %

29

02

03

04

05

06

A9

82

83

84

85

86

0E

16

1E

26

25

2E

F0

F0

F0

F0

F0

F0

0E

16

1E

26

25

2E

11

12

13

07

08

09

10

6 ^

7 &

8 *

9 (

0 )

- _

= +

07

08

09

0A

0B

0C

0D

87

88

89

8A

8B

8C

8D

36

3D

3E

46

45

4E

55

F0

F0

F0

F0

F0

F0

F0

36

3D

3E

46

45

4E

55

*2

*2

*2

*2

15 BkSp 0E 8E 66 F0 66

17 Q 10 90 15 F0 15

19 E 12 92 24 F0 24

22 Y 15 95 35 F0 35

24 I 17 97 43 F0 43 *2

25 O 18 98 44 F0 44 *2

27

28

[ {

] }

1A

1B

9A

9B

54

5B

F0

F0

54

5B

Satellite M20 Maintenance Manual D-1

Appendices Keyboard Scan/Character Codes

Table D-1 Scan codes (set 1 and set 2) (2/4)

Cap

No.

Code set 1 Code set 2

Keytop

Make Break Make Break

Note

29 \ | 2B AB 5D F0 5D *5

30 Caps

33 D 20 A0 23 F0 23

35 G 22 A2 34 F0 34

36 H 23 A3 33 F0 33

38 K 25 A5 42 F0 42 *2

40

41

; :

‘ “

27

28

A7

A8

4C

52

F0

F0

4C

52

*2

45 No.102 key

56 D6 61 F0 61

50 B 30 B0 32 F0 32

51 N 31 B1 31 F0 31

53

54

55

, <

. >

/ ?

33

34

35

B3

B4

B5

41

49

4A

F0

F0

F0

41

49

4A

*2

*2

*2

Keyboard Scan/Character Codes Appendices

Cap

No. Keytop

Table D-1 Scan codes (set 1 and set 2) (3/4)

Code set 1 Code set 2

Make Break Make Break

Note

112

113

114

115

116

117

118

119

120

121

62 ALT

75

76

Ins

Del

E0 52 E0 D2 E0 70 E0 F0 70 *1

E0 53 E0 D3 E0 71 E0 F0 71 *1

79

80

81

← E0 4B E0 CB E0 6B E0 F0 6B *1

Home E0 47 E0 C7 E0 6C E0 F0 6C *1

End E0 4F E0 CF E0 69 E0 F0 69 *1

83

84

E0 48 E0 C8 E0 75 E0 F0 75 *1

E0 50 E0 D0 E0 72 E0 F0 72 *1

85

86

PgUp E0 49 E0 C9 E0 7D E0 F0 7D *1

PgDn E0 51 E0 D1 E0 7A E0 F0 7A *1

E0 4D E0 CD E0 74 E0 F0 74 *1 89

110 Esc 01 81 76 76

F6

F7

F8

F9

F1

F2

F3

F4

F5

F10

3B

3C

3D

3E

3F

40

41

42

43

44

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

05

06

04

0C

03

0B

83

0A

01

09

F0

F0

F0

F0

F0

F0

F0

F0

F0

F0

05

06

04

0C

03

0B

83

0A

01

09 *3

Satellite M20 Maintenance Manual D-3

Appendices Keyboard Scan/Character Codes

Cap

No. Keytop

Table D-1 Scan codes (set 1 and set 2) (4/4)

Code set 1 Code set 2

Make Break Make Break

Note

*6

203

204

Win E0

Notes:

1. * Scan codes differ by mode.

2. * Scan codes differ by overlay function.

3. * Combination with the

Fn

key makes different codes.

4. *

Fn

key does not generate a code by itself.

5. * This key corresponds to key No. 42 in a 102-key model.

6. * Refer to Table D-6, No. 124 key scan code.

7. * Refer to Table D-7, No. 126 key scan code.

Keyboard Scan/Character Codes Appendices

Table D-2 Scan codes with left Shift key

Cap

No.

Key top

Code set 1

Make Break

Code set 2

Make Break

55 / E0 AA E0 35 E0 B5 E0 2A E0 F0 12 E0 4A E0 F0 4A E0 12

75 INS E0 AA E0 52 E0 D2 E0 2A E0 F0 12 E0 70 E0 F0 70 E0 12

76 DEL E0 AA E0 53 E0 D3 E0 2A E0 F0 12 E0 71 E0 F0 71 E0 12

79 ← E0 AA E0 4B E0 CB E0 2A E0 F0 12 E0 6B E0 F0 6B E0 12

80 Home E0 AA E0 47 E0 C7 E0 2A E0 F0 12 E0 6C E0 F0 6C E0 12

81 End E0 AA E0 4F E0 CF E0 2A E0 F0 12 E0 69 E0 F0 69 E0 12

83

84

E0 AA E0 48 E0 C8 E0 2A E0 F0 12 E0 75 E0 F0 75 E0 12

E0 AA E0 50 E0 D0 E0 2A E0 F0 12 E0 72 E0 F0 72 E0 12

85 PgUp E0 AA E0 49 E0 C9 E0 2A E0 F0 12 E0 7D E0 F0 7D E0 12

86 PgDn E0 AA E0 51 E0 D1 E0 2A E0 F0 12 E0 7A E0 F0 7A E0 12

89 → E0 AA E0 4D E0 CD E0 2A E0 F0 12 E0 74 E0 F0 74 E0 12

203 Win E0 AA E0 5B E0 DB E0 2A E0 F0 12 E0 1F E0 F0 1F E0 12

204 App E0 AA E0 5D E0 DD E0 2A E0 F0 12 E0 2F E0 F0 2F E0 12

Note : The table above shows scan codes with the left

Shift

key. In combination with the right

Shift

key, scan codes are changed as listed below:

Set 1

Set 2

Shift Shift

E0 AA __________ E0 B6

E0 2A ___________ E0 36

E0 F0 12 ________ E0 F0 59

E0 12 ___________ E0 59

Satellite M20 Maintenance Manual D-5

Appendices Keyboard Scan/Character Codes

Table D-3 Scan codes in Numlock mode

Cap

No.

Key top

Code set 1 Code set 2

Make Break Make Break

75 INS E0 2A E0 52 E0 D2 E0 AA E0 12 E0 70 E0 F0 70 E0 F0 12

76 DEL E0 2A E0 53 E0 D3 E0 AA E0 12 E0 71 E0 F0 71 E0 F0 12

79

E0 2A E0 4B E0 CB E0 AA E0 12 E0 6B E0 F0 6B E0 F0 12

80 Home E0 2A E0 47 E0 C7 E0 AA E0 12 E0 6C E0 F0 6C E0 F0 12

81 End E0 2A E0 4F E0 CF E0 AA E0 12 E0 69 E0 F0 69 E0 F0 12

83

84

E0 2A E0 48 E0 C8 E0 AA E0 12 E0 75 E0 F0 75 E0 F0 12

E0 2A E0 50 E0 D0 E0 AA E0 12 E0 72 E0 F0 72 E0 F0 12

85 PgUp E0 2A E0 49 E0 C9 E0 AA E0 12 E0 7D E0 F0 7D E0 F0 12

86 PgDn E0 2A E0 51 E0 D1 E0 AA E0 12 E0 7A E0 F0 7A E0 F0 12

89 → E0 2A E0 4D E0 CD E0 AA E0 12 E0 74 E0 F0 74 E0 F0 12

203 Win E0 2A E0 5B E0 DB E0 AA E0 12 E0 1F E0 F0 1F E0 F0 12

204 App E0 2A E0 5D E0 DD E0 AA E0 12 E0 2F E0 F0 2F E0 F0 12

Table D-4 Scan codes with Fn key

Cap

No. Keytop

Code set 1 Code set 2

Make Break Make Break

43 ENT E0 1C E0 9C E0 5A

58 CTRL E0 1D E0 9D E0 14 E0 F0 14

60 LALT E0 38 E0 B8 E0 11 E0 F0 11

121 ARROW 45 C5 77 F0 77

122 NUMERIC

123 Scrl

45

46

C5

C5

77

7E

F0 77

F0 7E

Keyboard Scan/Character Codes Appendices

Table D-5 Scan codes in overlay mode

Cap

No.

Keytop Code set 1 Code set 2

Make Break Make Break

08 7 (7) 47

09 8 (8) 48

10 9 (9) 49

11 0 (*) 37

23 U (4) 4B

24 I (5) 4C

25 O (6) 4D

26 P (–) 4A

37 J (1) 4F

38 K (2) 50

39 L (3) 51

40 ; (+) 4E

52 M (0) 52

54 . (.) 53

C7

C8

C9

B7

CB

CC

CD

CA

CF

D0

D1

CE

D2

D3

6C

75

7D

7C

6B

73

74

7B

69

72

7A

79

70

71

F0

F0

F0

F0

F0

F0 73

F0

F0

F0

F0

F0

F0 79

F0

6C

75

7D

7C

6B

74

7B

69

72

7A

70

F0 71

Key top

Shift

Table D-6 No.124 key scan code

Code set 1 Code set 2

Make Break Make Break

Ctrl

+

Shift

+

Alt

+

Satellite M20 Maintenance Manual D-7

Appendices Keyboard Scan/Character Codes

Table D-7 No.126 key scan code

Key top

Shift Code set 1 Code set 2

Make Make

Pause Common* E1 1D 45 E1 9D C5 E1 14 77 E1 F0 14 F0 77

46 C6

*: This key generates only make codes.

Apx E Key Layout

Apx. E Key Layout

Appendix E Key Layout

E.1 United States (US) Keyboard

Appendices

Figure E-1 US keyboard

E.2 United Kindom (UK) Keyboard

Satellite M20 Maintenance Manual

Figure E-2 UK keyboard

E-1

Appendices

Figure E-3 Korea keyboard

Apx E Key Layout

E-2 Satellite M20 Maintenance Manual

Apx. F Wiring Diagrams

Appendix F

Appendix F Wiring Diagrams

F.1 Parallel Port Wraparound Connector

Appendices

Figure F-1 Parallel port wraparound connector

F.2 Serial Port Wraparound Connector

Figure F-2 Serial port wraparound connector

Satellite M20 Maintenance Manual F-1

Appendices

F.3 Serial Port Direct Cable (9-Pin to 9-Pin)

Apx. F Wiring Diagrams

Figure F-3 Serial port direct cable (9-pin to 9-pin)

F.4 Serial Port Direct Cable (9-Pin to 25-Pin)

Figure F-4 Serial port direct cable (9-pin to 25-pin)

Apx. G BIOS Rewrite Procedures Appendices

Appendix G

Appendix G BIOS Rewrite Procedures

This Appendix explains how to rewrite the system BIOS program when you update the system BIOS.

Tools

To rewrite the BIOS, you need the following tool:

BIOS/EC/KBC rewriting disk for the computer that has renewed BIOS data.

Rewriting the BIOS

1. Set the system to boot mode.

2. Turn off the power to the computer.

3. Remove the external cable and PC card.

4. Connect an external FDD and insert the BIOS/EC/KBC rewriting disk into either the external FDD.

5. Turn on the power while holding down the [

`

~

] key (on the left of the space key).

(Keep holding down the key until a message appears on the screen.) The BIOS rewriting starts.

6. When the process is completed, eject the BIOS/EC/KBC rewriting disk and the system is automatically reset.

Satellite M20 Maintenance Manual G-1

Apx. H EC/KBC Rewrite Procedures Appendices

Appendix H

Appendix H EC/KBC Rewrite Procedures

This Appendix explains how to rewrite the EC/KBC system program when you update the

EC/KBC system.

Tools

To rewrite the EC/KBC, you need the following tool:

BIOS/EC/KBC rewriting disk for the computer

Rewriting the EC/KBC

1. Set the system to boot mode.

2. Turn off the power to the computer.

3. Remove the external cable and PC Card.

4. Connect an external FDD and insert the BIOS/EC/KBC rewriting disk into either the external FDD.

5. Turn on the power while holding down the [

`

~

] key. (Keep holding down the key until a message appears on the screen.) The EC/KBC rewriting starts.

6. When the EC/KBC rewrite is completed, the system is automatically turned off.

Note: 1. Rewrite the EC/KBS only when instructed by a diagnostic disk release

notice.

2. Connect the AC adapter to the computer when you rewrite the EC/KBC.

3. Do not turn off the power while you are rewriting the EC/KBC. If the rewrite fails, it might be impossible to start up the computer.

4. If you fail to rewrite EC/KBC, then when you next turn on the power, a message may be displayed that the contents of the EC/KBC have been erased. In this case, insert the BIOS/EC/KBC rewriting disk, and the

EC/KBC will be rewritten.

5. Normally it takes about 30 seconds to rewrite the EC/KBC. It may take 3 minutes (maximum), depending on the conditions of the computer or ICs.

The computer is not hung up. Allow sufficient time. Never reboot or turn off the power to the computer before the rewriting is completed.

Satellite M20 Maintenance Manual

H-1

advertisement

Was this manual useful for you? Yes No
Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Related manuals

Download PDF

advertisement