Toshiba TECRA M5 User manual

[CONFIDENTIAL]
Toshiba Personal Computer
TECRA M5
Maintenance Manual
TOSHIBA CORPORATION
File Number 960-542

ii [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)
Copyright
© 2006 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 Personal Computer TECRA M5 Maintenance Manual
First edition January 2006
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 TECRA M5 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
IBM is a registered trademark and IBM PC is a trademark of International Business
Machines Corporation.
Intel, Intel SpeedStep, Intel Core and Centrino are trademarks or registered trademarks of
Intel Corporation or its subsidiaries in the United States and other countries/regions.
Windows and Microsoft are registered trademarks of Microsoft Corporation.
Photo CD is a trademark of Eastman Kodak.
Sonic RecordNow! is a registered trademark of Sonic Solutions.
Bluetooth is a trademark owned by its proprietor and used by TOSHIBA under license.
i.LINK is trademark and registered trademark of Sony Corporation.
InterVideo and WinDVD are registered trademarks of InterVideo Inc. WinDVD Creator is
trademark of InterVideo Inc.
Other trademarks and registered trademarks not listed above may be used in this manual.

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] iii
Preface
This maintenance manual describes how to perform hardware service maintenance for the
Toshiba Personal Computer TECRA M5.
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 or RTC 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.

iv [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)
The manual is divided into the following parts:
Chapter 1 Hardware Overview describes the TECRA M5 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
EC/KBC rewrite procedures
Reliability

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] v
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 computer that appears on its display is presented in the type face
below:
Format complete
System transferred

vi [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)
Table of Contents
Chapter 1 Hardware Overview
1.1 Features......................................................................................................................1-1
1.2 System Unit Block Diagram......................................................................................1-8
1.3 3.5-inch Floppy Disk Drive (USB External) ...........................................................1-14
1.4 2.5-inch Hard Disk Drive.........................................................................................1-15
1.5 CD-ROM Drive .......................................................................................................1-18
1.6 DVD-ROM Drive ....................................................................................................1-19
1.7 CD-R/RW&DVD-ROM Drive ................................................................................1-20
1.8 DVD-Super Multi Drive..........................................................................................1-22
1.9 Keyboard..................................................................................................................1-24
1.10 TFT Color Display...................................................................................................1-25
1.11 Power Supply...........................................................................................................1-28
1.12 Batteries ...................................................................................................................1-30
Chapter 2 Troubleshooting Procedures
2.1 Troubleshooting.........................................................................................................2-1
2.2 Troubleshooting Flowchart........................................................................................2-2
2.3 Power Supply Troubleshooting..................................................................................2-6
2.4 System Board Troubleshooting................................................................................2-16
2.5 USB FDD Troubleshooting .....................................................................................2-33
2.6 HDD Troubleshooting .............................................................................................2-36
2.7 Keyboard and Touch pad Troubleshooting..............................................................2-41
2.8 Display Troubleshooting..........................................................................................2-44
2.9 Optical Drive Troubleshooting................................................................................2-46
2.10 Modem Troubleshooting..........................................................................................2-48
2.11 LAN Troubleshooting..............................................................................................2-50
2.12 Bluetooth Troubleshooting ......................................................................................2-51
2.13 Wireless LAN Troubleshooting...............................................................................2-54
2.14 Sound Troubleshooting............................................................................................2-57

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] vii
2.15 SD Card Slot Troubleshooting.................................................................................2-60
2.16 PCI Express Card Slot Troubleshooting..................................................................2-61
2.17 Fingerprint Sensor Troubleshooting........................................................................2-62
Chapter 3 Tests and Diagnostics
3.1 The Diagnostic Test...................................................................................................3-1
3.2 Executing the Diagnostic Test...................................................................................3-4
3.3 Setting of the hardware configuration .......................................................................3-8
3.4 Heatrun Test.............................................................................................................3-10
3.5 Subtest Names..........................................................................................................3-11
3.6 System Test..............................................................................................................3-13
3.7 Memory Test............................................................................................................3-15
3.8 Keyboard Test..........................................................................................................3-16
3.9 Display Test.............................................................................................................3-17
3.10 Floppy Disk Test......................................................................................................3-20
3.11 Printer Test...............................................................................................................3-22
3.12 Async Test ...............................................................................................................3-24
3.13 Hard Disk Test.........................................................................................................3-25
3.14 Real Timer Test........................................................................................................3-28
3.15 NDP Test..................................................................................................................3-30
3.16 Expansion Test.........................................................................................................3-31
3.17 CD-ROM/DVD-ROM Test .....................................................................................3-33
3.18 Error Code and Error Status Names.........................................................................3-34
3.19 Hard Disk Test Detail Status ...................................................................................3-37
3.20 ONLY ONE TEST...................................................................................................3-39
3.21 Head Cleaning..........................................................................................................3-47
3.22 Log Utilities.............................................................................................................3-48
3.23 Running Test............................................................................................................3-50
3.24 Floppy Disk Drive Utilities......................................................................................3-51
3.25 System Configuration ..............................................................................................3-56
3.26 Wireless LAN Test Program (Intel-made a/b/g)......................................................3-58
3.27 LAN/Modem/Bluetooth/IEEE1394 Test Program ..................................................3-63

viii [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)
3.28 Sound Test program.................................................................................................3-77
3.29 SETUP .....................................................................................................................3-83
Chapter 4 Replacement Procedures
4.1 General.......................................................................................................................4-1
4.2 Battery pack...............................................................................................................4-8
4.3 Express card / PC card.............................................................................................4-10
4.4 SD card.....................................................................................................................4-12
4.5 HDD.........................................................................................................................4-13
4.6 Slim select bay module............................................................................................4-17
4.7 Memory module.......................................................................................................4-20
4.8 Keyboard..................................................................................................................4-22
4.9 SW membrane..........................................................................................................4-27
4.10 Display assembly.....................................................................................................4-29
4.11 MDC (Modem Daughter Card)................................................................................4-34
4.12 Wireless LAN board................................................................................................4-36
4.13 Internal microphone.................................................................................................4-39
4.14 Sound board.............................................................................................................4-40
4.15 RTC battery..............................................................................................................4-42
4.16 Video board..............................................................................................................4-44
4.17 GPU heat sink..........................................................................................................4-46
4.18 CPU heat sink/CPU..................................................................................................4-48
4.19 Fan............................................................................................................................4-52
4.20 System board/HDD cable/DC-IN jack.....................................................................4-54
4.21 LAN/Modem jack....................................................................................................4-57
4.22 PC card slot..............................................................................................................4-58
4.23 Battery lock/Battery latch/ODD latch......................................................................4-59
4.24 LCD unit/FL inverter...............................................................................................4-61
4.25 Touch pad.................................................................................................................4-66
4.26 Finger print sensor board.........................................................................................4-68
4.27 Bluetooth module.....................................................................................................4-70
4.28 Hinge........................................................................................................................4-72
4.29 Speaker.....................................................................................................................4-78

TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] ix
4.30 Wireless LAN antenna/Bluetooth antenna...............................................................4-80
4.31 LCD cover latch.......................................................................................................4-82
4.32 Fluorescent Lamp.....................................................................................................4-83
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
Appendix I Reliability........................................................................................................I-1

x [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

Appendix A Handling the LCD Module Appendices
Appendix A P
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. For the LCD module, 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.
TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] A-1

Appendices Appendix 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.
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 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)

Appendix 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.
TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] A-3

Appendices Appendix 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.
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Appendix 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.
TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] A-5

Appendices Appendix A Handling the LCD Module
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Appendix B Board Layout Appendices
Appendix B Board Layout
B.1 System Board (FDBGS*) Front View
Figure B-1 System board (FDBGS *) layout (front)
TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] B-1

Appendices Appendix B Board Layout
B-2 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)
Table B-1 System board (FDBGS*) ICs and connectors (front)
Number Name
CN4100 Network interface connector
CN8810 Main Battery connector
CN8800 DC-IN connector
CN3011 Modem relay connector
CN5080 RGB connector
CN2600 PCI Express card connector
CN8771 Fan connector
CN5000 LCD interface connector
CN4200 IEEE1394 connector
CN4610 USB port 0 connector
CN2100 PC card interface connector
CN1801 Select bay connector
CN9500 GN board I/F connector
CN9501 USB harness connector
CN9700 GF board I/F connector
CN3201 Touch pad connector
CN3200 Keyboard connector
CN4400 Bluetooth connector
CN5300 DVI TV connector
IS1050 CPU socket
IC2000 Card controller
IC1600 ICH7-M
IC3200 EC/KBC
IC5000 GPU

Appendix B Board Layout Appendices
B.2 System Board (FDBGS *) Back View
Figure B-2 System board (FDBGS*) layout (back)
TECRA M5 Maintenance Manual (960-542) [CONFIDENTIAL] B-3

Appendices Appendix B Board Layout
B-4 [CONFIDENTIAL] TECRA M5 Maintenance Manual (960-542)
Table B-2 System board (FDBGS*) connectors (back)
Number Name
CN2300 Docking interface connector
CN1850 HDD connector
IS2101 SD card slot
CN1400 DIMM0 slot
CN1410 DIMM1 slot