IBM ThinkPad G40 Series Owner's manual

IBM Mobile Systems
ThinkPad
Computer
Hardware Maintenance Manual
August 2004
This manual supports: ThinkPad G40, G41


Note
Before using this information and the product it
supports, be sure to read the general information
under “Notices” on page 154.
First Edition (August 2004)
The following paragraph does not apply to the United
Kingdom or any country where such provisions are
inconsistent with local law:
INTERNATIONAL BUSINESS MACHINES CORPORATION
PROVIDES THIS PUBLICATION “AS IS” WITHOUT ANY
WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
LIMITED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. Some states
do not allow disclaimer or express or implied warranties in
certain transactions; therefore, this statement may not
apply to you.
This publication could include technical inaccuracies or
typographical errors. Changes are periodically made to the
information herein; these changes will be incorporated in
new editions of the publication. IBM may make
improvements or changes to the products or the programs
described in this publication at any time.
It is possible that this publication may contain references
to, or information about, IBM products (machines and
programs), programming, or services that are not
announced in your country. Such references or information
must not be construed to mean that IBM intends to
announce such IBM products, programming, or services in
your country.
Requests for technical information about IBM products
should be made to your IBM authorized dealer or your IBM
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© Copyright International Business Machines
Corporation 2004. All rights reserved.
US Government Users Restricted Rights – Use, duplication
or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

Contents
About this manual . . . . . . . . . . .1
Introduction . . . . . . . . . . . . .3
Important service information . . . . . . . . .3
Strategy for replacing FRUs . . . . . . . .3
How to use error messages . . . . . . . .4
Diskette compatibility matrix . . . . . . . . .4
Safety notices: multilingual translations . . . . . .5
Safety information . . . . . . . . . . . .17
General safety . . . . . . . . . . . .17
Electrical safety . . . . . . . . . . .18
Safety inspection guide . . . . . . . . .20
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . .21
Grounding requirements . . . . . . . . .22
Laser compliance statement . . . . . . . . .22
General descriptions . . . . . . . . . .25
Read this first . . . . . . . . . . . . .25
What to do first . . . . . . . . . . .25
Related service information . . . . . . . . .28
Service Web site . . . . . . . . . . .28
Restoring the preloaded system . . . . . .28
Passwords . . . . . . . . . . . . .30
Power management . . . . . . . . . .33
Checkout guide . . . . . . . . . . . .35
Testing the computer . . . . . . . . . .35
Detecting system information with PC-Doctor . . .37
Power system checkout . . . . . . . . .37
ThinkPad G40, G41 . . . . . . . . . . .41
Product overview . . . . . . . . . . . .43
Specifications . . . . . . . . . . . .43
Status indicators . . . . . . . . . . .45
FRU tests . . . . . . . . . . . . .47
Fn key combinations . . . . . . . . . .49
Symptom-to-FRU index . . . . . . . . . .50
Numeric error codes . . . . . . . . . .50
Error messages . . . . . . . . . . .54
Beep symptoms . . . . . . . . . . .56
No-beep symptoms . . . . . . . . . .56
LCD-related symptoms . . . . . . . . .57
Intermittent problems . . . . . . . . . .58
Undetermined problems . . . . . . . . .58
FRU replacement notices . . . . . . . . .59
Screw notices . . . . . . . . . . . .59
Retaining serial numbers . . . . . . . . .60
Removing and replacing a FRU . . . . . . . .62
1010 Battery pack . . . . . . . . . . .63
1020 Hard disk drive . . . . . . . . . .64
© Copyright IBM Corp. 2004 iii

1030 DIMM door . . . . . . . . . . .66
1040 DIMM . . . . . . . . . . . .67
1050 Modem daughter card (MDC) . . . . .68
1060 Backup battery . . . . . . . . . .69
1070 Keyboard . . . . . . . . . . .70
1080 Middle cover . . . . . . . . . .72
1090 Hinge cover . . . . . . . . . . .73
1095 FDD assembly . . . . . . . . . .74
1100 Blank bezel FDD assembly . . . . . .75
1110 VGA heatsink assembly . . . . . . .76
1120 VGA card assembly . . . . . . . .77
1130 CD-ROM/DVD drive and ODD bracket . . .78
1140 Mini PCI adapter . . . . . . . . .79
1150 PC card slot assembly . . . . . . . .80
1160 LCD and Keyboard bezel assembly . . . .83
1170 LCD assembly . . . . . . . . . .86
1180 Keyboard bezel . . . . . . . . . .89
1190 Fan assembly . . . . . . . . . .91
2000 Fan (CPU 3 GHz) and CPU fixture . . . .93
2010 CPU . . . . . . . . . . . . .95
2020 CD-ROM/DVD drive bracket . . . . . .96
2030 FDD bracket . . . . . . . . . .97
2040 System board . . . . . . . . . .98
2050 Lower case assembly . . . . . . . .99
2060 Modem cable . . . . . . . . . . 100
2070 PC card slot assembly . . . . . . . 101
2080 LCD front bezel . . . . . . . . . 102
2090 Inverter card . . . . . . . . . . 103
3000 Speaker assembly . . . . . . . . 104
3010 LCD cable assembly . . . . . . . . 105
3020 Wireless antenna and rear cover . . . . 107
3030 LCD panel and hinge assembly . . . . 108
Locations . . . . . . . . . . . . . . 109
Front view . . . . . . . . . . . . 109
Rear view . . . . . . . . . . . . .110
Bottom view . . . . . . . . . . . . 111
Parts list . . . . . . . . . . . . . .112
G40, G41 series . . . . . . . . . . .112
Overall . . . . . . . . . . . . . 136
LCD FRUs . . . . . . . . . . . . 143
Keyboard . . . . . . . . . . . . . 146
Recovery CDs . . . . . . . . . . . 147
Miscellaneous parts . . . . . . . . . . 150
AC adapters . . . . . . . . . . . . 150
Telephone cable . . . . . . . . . . . 150
Optional FRUs . . . . . . . . . . . 151
Common parts list . . . . . . . . . . 152
Notices . . . . . . . . . . . . . . 154
Trademarks . . . . . . . . . . . . 154
iv ThinkPad G40, G41

About this manual
This manual contains service and reference information for
IBM ThinkPad G40 and G41 products. Use this manual
along with the advanced diagnostic tests to troubleshoot
problems.
The manual is divided into sections as follows:
v The common sections provide general information,
guidelines, and safety information required in servicing
computers.
v The product-specific section includes service, reference,
and product-specific parts information.
Important
This manual is intended for trained service
personnel who are familiar with ThinkPad products.
Use this manual along with the advanced diagnostic
tests to troubleshoot problems effectively.
Before servicing an IBM ThinkPad product, be sure
to review the safety information under “Safety
notices: multilingual translations” on page 5, “Safety
information” on page 17, and “Laser compliance
statement” on page 22.
© Copyright IBM Corp. 2004 1

2 ThinkPad G40, G41

Introduction
Important service information
Important
Software (i.e., BIOS and device driver) fixes are
customer-installable. The BIOS and device drivers
are posted on the IBM support site
http://www.ibm.com/pc/support
Advise customers to contact the PC Company
HelpCenter at 800-772-2227 if they need assistance
in obtaining or installing any software fixes.
Customers in Canada should call IBM HelpPC at
800-565-3344 for assistance or download
information.
Strategy for replacing FRUs
Before replacing parts
Make sure that all software fixes are installed before
replacing any FRUs listed in this manual.
Use the following strategy to prevent unnecessary expense
for replacing and servicing FRUs:
v If you are instructed to replace a FRU but the
replacement does not correct the problem, reinstall
the original FRU before you continue.
v Some computers have both a processor board and a
system board. If you are instructed to replace either the
processor board or the system board, and replacing one
of them does not correct the problem, reinstall that
board, and then replace the other one.
v If an adapter or device consists of more than one FRU,
any of the FRUs may be the cause of the error. Before
replacing the adapter or device, remove the FRUs, one
by one, to see if the symptoms change. Replace only
the FRU that changed the symptoms.
Attention: The setup configuration on the computer you
are servicing may have been customized. Loading Setup
Defaults or replacing the system board may alter the
settings. Note the current configuration settings (using the
BIOS Setup Utility); then, when service has been
completed, verify that those settings remain in effect.
© Copyright IBM Corp. 2004 3

Strategy for replacing a hard disk drive
Always try to run a low-level format before replacing a hard
disk drive.
Attention: The drive startup sequence in the computer
you are servicing may have been changed. Be extremely
careful during write operations such as copying, saving, or
formatting. If you select an incorrect drive, data or
programs can be overwritten.
How to use error messages
Use the error codes displayed on the screen to diagnose
failures. If more than one error code is displayed, begin the
diagnosis with the first error code. Whatever causes the
first error code may also cause false error codes. If no
error code is displayed, see if the error symptom is listed
in the Symptom-to-FRU Index for the computer you are
servicing.
Diskette compatibility matrix
The compatibility of each of the drives with the diskettes
for it is as follows:
Diskette
drive
Diskette
capacity
Compatibility
3.5-inch 1.0 MB Read and write
2.0 MB Read and write
4.0 MB Not compatible
Important service information
4 ThinkPad G40, G41

Safety notices: multilingual translations
In this manual, safety notices appear in English with a
page number reference to the appropriate multilingual,
translated safety notice found in this section.
The following safety notices are provided in English,
French, German, Hebrew, Italian, and Spanish.
Safety notice 1
Before the computer is powered-on after FRU replacement, make
sure all screws, springs, and other small parts are in place and
are not left loose inside the computer. Verify this by shaking the
computer and listening for rattling sounds. Metallic parts or metal
flakes can cause electrical shorts.
Avant de remettre l’ordinateur sous tension après remplacement
d’une unité en clientèle, vérifiez que tous les ressorts, vis et
autres pièces sont bien en place et bien fixées. Pour ce faire,
secouez l’unité et assurez-vous qu’aucun bruit suspect ne se
produit. Des pièces métalliques ou des copeaux de métal
pourraient causer un court-circuit.
Bevor nach einem FRU-Austausch der Computer wieder
angeschlossen wird, muß sichergestellt werden, daß keine
Schrauben, Federn oder andere Kleinteile fehlen oder im
Gehäuse vergessen wurden. Der Computer muß geschüttelt und
auf Klappergeräusche geprüft werden. Metallteile oder-splitter
können Kurzschlüsse erzeugen.
Prima di accendere l’elaboratore dopo che é stata effettuata la
sostituzione di una FRU, accertarsi che tutte le viti, le molle e
tutte le altri parti di piccole dimensioni siano nella corretta
posizione e non siano sparse all’interno dell’elaboratore. Verificare
ciò scuotendo l’elaboratore e prestando attenzione ad eventuali
rumori; eventuali parti o pezzetti metallici possono provocare
cortocircuiti pericolosi.
(continued)
Safety notices
Introduction 5

(continuation of safety notice 1)
Antes de encender el sistema despues de sustituir una FRU,
compruebe que todos los tornillos, muelles y demás piezas
pequeñas se encuentran en su sitio y no se encuentran sueltas
dentro del sistema. Compruébelo agitando el sistema y
escuchando los posibles ruidos que provocarían. Las piezas
metálicas pueden causar cortocircuitos eléctricos.
Safety notices
6 ThinkPad G40, G41