Lenovo Thinkpad G41 Users Manual G40,

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ThinkPad Computer
Hardware Maintenance Manual

July 2005

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 156.

First Edition (July 2005)
© Copyright Lenovo 2005.
Portions © Copyright International Business Machines
Corporation 2005.
All rights reserved.
U.S. GOVERNMENT USERS – RESTRICTED RIGHTS:
Our products and/or services are provided with
RESTRICTED RIGHTS. Use, duplication or disclosure by
the Government is subject to the GSA ADP Schedule
contract with Lenovo Group Limited, if any, or the standard
terms of this commercial license, or if the agency is unable
to accept this Program under these terms, then we provide
this Program under the provisions set forth in Commercial
Computer Software–Restricted Rights at FAR 52.227-19,
when applicable, or under Rights in Data-General, FAR
52.227.14 (Alternate III).

Contents
About this manual

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Introduction . . . . . . . .
Important service information . . . .
Strategy for replacing FRUs . . .
How to use error messages . . .
Diskette compatibility matrix . . . .
Safety notices: multilingual translations .
Safety information . . . . . . .
General safety . . . . . . .
Electrical safety . . . . . .
Safety inspection guide . . . .
Handling devices that are sensitive to
discharge . . . . . . .
Grounding requirements . . . .
Laser compliance statement . . . .

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General descriptions . . . .
Read this first . . . . . . .
What to do first . . . . .
Related service information . . .
Service Web site . . . . .
Restoring the preloaded system
Passwords . . . . . . .
Power management . . . .
Checkout guide . . . . . .
Testing the computer . . . .
Detecting system information with
Power system checkout . . .

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ThinkPad G40, G41 . . . .
Product overview . . . . .
Specifications . . . . .
Status indicators . . . .
FRU tests . . . . . .
Fn key combinations . . .
Symptom-to-FRU index . . .
Numeric error codes . . .
Error messages . . . .
Beep symptoms . . . .
No-beep symptoms . . .
LCD-related symptoms . .
Intermittent problems . . .
Undetermined problems . .
FRU replacement notices . .
Screw notices . . . . .
Retaining serial numbers. .
Removing and replacing a FRU.
1010 Battery pack. . . .
1020 Hard disk drive . . .

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© Lenovo 2005. Portions © IBM Corp. 2005.

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iii

1030 DIMM door . . . . . . . . .
1040 DIMM . . . . . . . . . .
1050 Modem daughter card (MDC) . . .
1060 Backup battery . . . . . . . .
1070 Keyboard . . . . . . . . .
1080 Middle cover . . . . . . . .
1090 Hinge cover . . . . . . . . .
1095 FDD assembly . . . . . . . .
1100 Blank bezel FDD assembly . . . .
1110 VGA heatsink assembly . . . . .
1120 VGA card assembly . . . . . .
1130 CD-ROM/DVD drive and ODD bracket .
1140 Mini PCI adapter . . . . . . .
1150 PC card slot assembly . . . . . .
1160 LCD and Keyboard bezel assembly . .
1170 LCD assembly . . . . . . . .
1180 Keyboard bezel . . . . . . . .
1190 Fan assembly . . . . . . . .
2000 Fan (CPU 3 GHz) and CPU fixture . .
2010 CPU . . . . . . . . . . .
2020 CD-ROM/DVD drive bracket . . . .
2030 FDD bracket . . . . . . . .
2040 System board . . . . . . . .
2050 Lower case assembly . . . . .
2060 Modem cable . . . . . . . .
2070 PC card slot assembly . . . . .
2080 LCD front bezel . . . . . . .
2090 Inverter card . . . . . . . .
3000 Speaker assembly . . . . . .
3010 LCD cable assembly . . . . . .
3020 Wireless antenna and rear cover . .
3030 LCD panel and hinge assembly . . .
Locations . . . . . . . . . . . .
Front view . . . . . . . . . . .
Rear view . . . . . . . . . . .
Bottom view . . . . . . . . . .
Parts list . . . . . . . . . . . .
G40, G41 series . . . . . . . . .
Overall . . . . . . . . . . .
LCD FRUs . . . . . . . . . .
Keyboard . . . . . . . . . . .
Recovery CDs . . . . . . . . .
Miscellaneous parts . . . . . . . .
AC adapters . . . . . . . . . .
Telephone cable . . . . . . . . .
Optional FRUs . . . . . . . . .
Common parts list . . . . . . . .
Notices . . . . . . . . . . . .
Trademarks . . . . . . . . . . .

iv

ThinkPad G40, G41

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About this manual
This manual contains service and reference information for
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 ThinkPad products, be sure to
review the safety information under “Safety notices:
multilingual translations” on page 4, “Safety
information” on page 16, and “Laser compliance
statement” on page 21.

© Lenovo 2005. Portions © IBM Corp. 2005.

1

2

ThinkPad G40, G41

Introduction
Important service information
Important
BIOS and device driver fixes are
customer-installable. The BIOS and device drivers
are posted on the customer support site
http://www.lenovo.com/think/support
Advise customers to contact the Customer Support
Center at 800-426-7378 if they need assistance in
obtaining or installing any diskette fixes.
Customers in Canada should call the Customer
Support Center 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.

© Lenovo 2005. Portions © IBM Corp. 2005.

3

Important service information

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

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.

4

ThinkPad G40, G41

Safety notices

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.
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.

Introduction

5

Safety notices

Safety notice 2

DANGER

Some standby batteries contain a small amount of
nickel and cadmium. Do not disassemble a standby
battery, recharge it, throw it into fire or water, or
short-circuit it. Dispose of the battery as required
by local ordinances or regulations. Use only the
battery in the appropriate parts listing. Use of an
incorrect battery can result in ignition or explosion
of the battery.
Certaines batteries de secours contiennent du
nickel et du cadmium. Ne les démontez pas, ne les
rechargez pas, ne les exposez ni au feu ni à l’eau.
Ne les mettez pas en court-circuit. Pour les mettre
au rebut, conformez-vous à la réglementation en
vigueur. Lorsque vous remplacez la pile de
sauvegarde ou celle de l’horloge temps réel, veillez
à n’utiliser que les modèles cités dans la liste de
pièces détachées adéquate. Une batterie ou une
pile inappropriée risque de prendre feu ou
d’exploser.
Die Bereitschaftsbatterie, die sich unter dem
Diskettenlaufwerk befindet, kann geringe Mengen
Nickel und Cadmium enthalten. Sie darf nur durch
die Verkaufsstelle oder den IBM Kundendienst
ausgetauscht werden. Sie darf nicht zerlegt,
wiederaufgeladen, kurzgeschlossen, oder Feuer
oder Wasser ausgesetzt werden. Die Batterie kann
schwere Verbrennungen oder Verätzungen
verursachen. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Bereitschafts-oder Systembatterie nur
Batterien des Typs verwenden, der in der
Ersatzteilliste aufgeführt ist. Der Einsatz falscher
Batterien kann zu Entzündung oder Explosion
führen.
(continued)

6

ThinkPad G40, G41

Safety notices

(continuation of safety notice 2)

Alcune batterie di riserva contengono una piccola
quantità di nichel e cadmio. Non smontarle,
ricaricarle, gettarle nel fuoco o nell’acqua né
cortocircuitarle. Smaltirle secondo la normativa in
vigore (DPR 915/82, successive disposizioni e
disposizioni locali). Quando si sostituisce la
batteria dell’RTC (real time clock) o la batteria di
supporto, utilizzare soltanto i tipi inseriti
nell’appropriato Catalogo parti. L’impiego di una
batteria non adatta potrebbe determinare l’incendio
o l’esplosione della batteria stessa.
Algunas baterías de reserva contienen una
pequeña cantidad de níquel y cadmio. No las
desmonte, ni recargue, ni las eche al fuego o al
agua ni las cortocircuite. Deséchelas tal como
dispone la normativa local. Utilice sólo baterías que
se encuentren en la lista de piezas. La utilización
de una batería no apropiada puede provocar la
ignición o explosión de la misma.

Introduction

7

Safety notices

Safety notice 3

DANGER

The battery pack contains small amounts of nickel.
Do not disassemble it, throw it into fire or water, or
short-circuit it. Dispose of the battery pack as
required by local ordinances or regulations. Use
only the battery in the appropriate parts listing
when replacing the battery pack. Use of an
incorrect battery can result in ignition or explosion
of the battery.
La batterie contient du nickel. Ne la démontez pas,
ne l’exposez ni au feu ni à l’eau. Ne la mettez pas
en court-circuit. Pour la mettre au rebut,
conformez-vous à la réglementation en vigueur.
Lorsque vous remplacez la batterie, veillez à
n’utiliser que les modèles cités dans la liste de
pièces détachées adéquate. En effet, une batterie
inappropriée risque de prendre feu ou d’exploser.
Akkus enthalten geringe Mengen von Nickel. Sie
dürfen nicht zerlegt, wiederaufgeladen,
kurzgeschlossen, oder Feuer oder Wasser
ausgesetzt werden. Bei der Entsorgung die
örtlichen Bestimmungen für Sondermüll beachten.
Beim Ersetzen der Batterie nur Batterien des Typs
verwenden, der in der Ersatzteilliste aufgeführt ist.
Der Einsatz falscher Batterien kann zu Entzündung
oder Explosion führen.

(continued)

8

ThinkPad G40, G41

Safety notices

(continuation of safety notice 3)
La batteria contiene piccole quantità di nichel. Non
smontarla, gettarla nel fuoco o nell’acqua né
cortocircuitarla. Smaltirla secondo la normativa in
vigore (DPR 915/82, successive disposizioni e
disposizioni locali). Quando si sostituisce la
batteria, utilizzare soltanto i tipi inseriti
nell’appropriato Catalogo parti. L’impiego di una
batteria non adatta potrebbe determinare l’incendio
o l’esplosione della batteria stessa.
Las baterías contienen pequeñas cantidades de
níquel. No las desmonte, ni recargue, ni las eche al
fuego o al agua ni las cortocircuite. Deséchelas tal
como dispone la normativa local. Utilice sólo
baterías que se encuentren en la lista de piezas al
sustituir la batería. La utilización de una batería no
apropiada puede provocar la ignición o explosión
de la misma.

Introduction

9

Safety notices

Safety notice 4

DANGER

The lithium battery can cause a fire, an explosion,
or a severe burn. Do not recharge it, remove its
polarized connector, disassemble it, heat it above
100°C (212°F), incinerate it, or expose its cell
contents to water. Dispose of the battery as
required by local ordinances or regulations. Use
only the battery in the appropriate parts listing. Use
of an incorrect battery can result in ignition or
explosion of the battery.
La pile de sauvegarde contient du lithium. Elle
présente des risques d’incendie, d’explosion ou de
brûlures graves. Ne la rechargez pas, ne retirez pas
son connecteur polarisé et ne la démontez pas. Ne
l’exposez pas à une temperature supérieure à
100°C, ne la faites pas brûler et n’en exposez pas
le contenu à l’eau. Mettez la pile au rebut
conformément à la réglementation en vigueur. Une
pile inappropriée risque de prendre feu ou
d’exploser.
Die Systembatterie ist eine Lithiumbatterie. Sie
kann sich entzünden, explodieren oder schwere
Verbrennungen hervorrufen. Batterien dieses Typs
dürfen nicht aufgeladen, zerlegt, über 100 C erhitzt
oder verbrannt werden. Auch darf ihr Inhalt nicht
mit Wasser in Verbindung gebracht oder der zur
richtigen Polung angebrachte Verbindungsstecker
entfernt werden. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Batterie nur Batterien des Typs
verwenden, der in der Ersatzteilliste aufgeführt ist.
Der Einsatz falscher Batterien kann zu Entzündung
oder Explosion führen.
(continued)

10

ThinkPad G40, G41

Safety notices

(continuation of safety notice 4)

La batteria di supporto e una batteria al litio e puo
incendiarsi, esplodere o procurare gravi ustioni.
Evitare di ricaricarla, smontarne il connettore
polarizzato, smontarla, riscaldarla ad una
temperatura superiore ai 100 gradi centigradi,
incendiarla o gettarla in acqua. Smaltirla secondo
la normativa in vigore (DPR 915/82, successive
disposizioni e disposizioni locali). L’impiego di una
batteria non adatta potrebbe determinare l’incendio
o l’esplosione della batteria stessa.
La batería de repuesto es una batería de litio y
puede provocar incendios, explosiones o
quemaduras graves. No la recargue, ni quite el
conector polarizado, ni la desmonte, ni caliente por
encima de los 100°C (212°F), ni la incinere ni
exponga el contenido de sus celdas al agua.
Deséchela tal como dispone la normativa local.

Introduction

11

Safety notices

Safety notice 5

If the LCD breaks and the fluid from inside the LCD
gets into your eyes or on your hands, immediately
wash the affected areas with water for at least 15
minutes. Seek medical care if any symptoms from the
fluid are present after washing.
Si le panneau d’affichage à cristaux liquides se brise et
que vous recevez dans les yeux ou sur les mains une
partie du fluide, rincez-les abondamment pendant au
moins quinze minutes. Consultez un médecin si des
symptômes persistent après le lavage.
Die Leuchtstoffröhre im LCD-Bildschirm enthält
Quecksilber. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Der
LCD-Bildschirm besteht aus Glas und kann zerbrechen,
wenn er unsachgemäß behandelt wird oder der
Computer auf den Boden fällt. Wenn der Bildschirm
beschädigt ist und die darin befindliche Flüssigkeit in
Kontakt mit Haut und Augen gerät, sollten die
betroffenen Stellen mindestens 15 Minuten mit Wasser
abgespült und bei Beschwerden anschließend ein Arzt
aufgesucht werden.

Nel caso che caso l’LCD si dovesse rompere ed il
liquido in esso contenuto entrasse in contatto con gli
occhi o le mani, lavare immediatamente le parti
interessate con acqua corrente per almeno 15 minuti;
poi consultare un medico se i sintomi dovessero
permanere.
Si la LCD se rompe y el fluido de su interior entra en
contacto con sus ojos o sus manos, lave
inmediatamente las áreas afectadas con agua durante
15 minutos como mínimo. Obtenga atención medica si
se presenta algún síntoma del fluido despues de
lavarse.

12

ThinkPad G40, G41

Safety notices

Safety notice 6

DANGER

To avoid shock, do not remove the plastic cover
that protects the lower part of the inverter card.
Afin d’éviter tout risque de choc électrique, ne
retirez pas le cache en plastique protégeant la
partie inférieure de la carte d’alimentation.
Aus Sicherheitsgründen die Kunststoffabdeckung,
die den unteren Teil der Spannungswandlerplatine
umgibt, nicht entfernen.

Per evitare scosse elettriche, non rimuovere la
copertura in plastica che avvolge la parte inferiore
della scheda invertitore.
Para evitar descargas, no quite la cubierta de
plástico que rodea la parte baja de la tarjeta
invertida.

Introduction

13

Safety notices

Safety notice 7

DANGER

Though the main batteries have low voltage, a
shorted or grounded battery can produce enough
current to burn personnel or combustible materials.
Bien que le voltage des batteries principales soit
peu élevé, le court-circuit ou la mise à la masse
d’une batterie peut produire suffisamment de
courant pour brûler des matériaux combustibles ou
causer des brûlures corporelles graves.
Obwohl Hauptbatterien eine niedrige Spannung
haben, können sie doch bei Kurzschluß oder
Erdung genug Strom abgeben, um brennbare
Materialien zu entzünden oder Verletzungen bei
Personen hervorzurufen.

Sebbene le batterie di alimentazione siano a basso
voltaggio, una batteria in corto circuito o a massa
può fornire corrente sufficiente da bruciare
materiali combustibili o provocare ustioni ai tecnici
di manutenzione.
Aunque las baterías principales tienen un voltaje
bajo, una batería cortocircuitada o con contacto a
tierra puede producir la corriente suficiente como
para quemar material combustible o provocar
quemaduras en el personal.

14

ThinkPad G40, G41

Safety notices

Safety notice 8

DANGER

Before removing any FRU, power off the computer,
unplug all power cords from electrical outlets,
remove the battery pack, and then disconnect any
interconnecting cables.
Avant de retirer une unité remplaçable en clientèle,
mettez le système hors tension, débranchez tous
les cordons d’alimentation des socles de prise de
courant, retirez la batterie et déconnectez tous les
cordons d’interface.
Die Stromzufuhr muß abgeschaltet, alle Stromkabel
aus der Steckdose gezogen, der Akku entfernt und
alle Verbindungskabel abgenommen sein, bevor
eine FRU entfernt wird.

Prima di rimuovere qualsiasi FRU, spegnere il
sistema, scollegare dalle prese elettriche tutti i cavi
di alimentazione, rimuovere la batteria e poi
scollegare i cavi di interconnessione.
Antes de quitar una FRU, apague el sistema,
desenchufe todos los cables de las tomas de
corriente eléctrica, quite la batería y, a
continuación, desconecte cualquier cable de
conexión entre dispositivos.

Introduction

15

Safety information

Safety information
The following section presents safety information with
which you need to be familiar before you service a
ThinkPad computer.

General safety
Follow these rules to ensure general safety:
v Observe good housekeeping in the area of the
machines during and after maintenance.
v When lifting any heavy object:
1. Ensure you can stand safely without slipping.
2. Distribute the weight of the object equally between
your feet.
3. Use a slow lifting force. Never move suddenly or
twist when you attempt to lift.
4. Lift by standing or by pushing up with your leg
muscles; this action removes the strain from the
muscles in your back. Do not attempt to lift any
object that weighs more than 16 kg (35 lb) or objects
that you think are too heavy for you.
v Do not perform any action that causes hazards to the
customer, or that makes the equipment unsafe.
v Before you start the machine, ensure that other service
representatives and the customer’s personnel are not in
a hazardous position.
v Place removed covers and other parts in a safe place,
away from all personnel, while you are servicing the
machine.
v Keep your toolcase away from walk areas so that other
people will not trip over it.
v Do not wear loose clothing that can be trapped in the
moving parts of a machine. Make sure that your sleeves
are fastened or rolled up above your elbows. If your hair
is long, fasten it.
v Insert the ends of your necktie or scarf inside clothing or
fasten it with a nonconductive clip, approximately 8
centimeters (3 inches) from the end.
v Do not wear jewelry, chains, metal-frame eyeglasses, or
metal fasteners for your clothing.
Attention: Metal objects are good electrical
conductors.
v Wear safety glasses when you are hammering, drilling,
soldering, cutting wire, attaching springs, using solvents,
or working in any other conditions that might be
hazardous to your eyes.

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Safety information

v After service, reinstall all safety shields, guards, labels,
and ground wires. Replace any safety device that is
worn or defective.
v Reinstall all covers correctly before returning the
machine to the customer.
v Fan louvers on the machine help to prevent overheating
of internal components. Do not obstruct fan louvers or
cover them with labels or stickers.

Warning
Handling the cord on this product or cords
associated with accessories sold with this product
will expose you to lead, a chemical known to the
state of California to cause cancer, and birth defects
or other reproductive harm. Wash hands after
handling.

Electrical safety
Observe the following rules when working on electrical
equipment.

Important
Use only approved tools and test equipment. Some
hand tools have handles covered with a soft
material that does not insulate you when working
with live electrical currents.
Many customers have, near their equipment, rubber
floor mats that contain small conductive fibers to
decrease electrostatic discharges. Do not use this
type of mat to protect yourself from electrical shock.
v Find the room emergency power-off (EPO) switch,
disconnecting switch, or electrical outlet. If an electrical
accident occurs, you can then operate the switch or
unplug the power cord quickly.
v Do not work alone under hazardous conditions or near
equipment that has hazardous voltages.
v Disconnect all power before:
– Performing a mechanical inspection
– Working near power supplies
– Removing or installing main units
v Before you start to work on the machine, unplug the
power cord. If you cannot unplug it, ask the customer to
power-off the wall box that supplies power to the
machine and to lock the wall box in the off position.
v If you need to work on a machine that has exposed
electrical circuits, observe the following precautions:
Introduction

17

Safety information

– Ensure that another person, familiar with the
power-off controls, is near you.
Attention: Another person must be there to switch
off the power, if necessary.
– Use only one hand when working with powered-on
electrical equipment; keep the other hand in your
pocket or behind your back.
Attention: An electrical shock can occur only when
there is a complete circuit. By observing the above
rule, you may prevent a current from passing through
your body.
– When using testers, set the controls correctly and
use the approved probe leads and accessories for
that tester.
– Stand on suitable rubber mats (obtained locally, if
necessary) to insulate you from grounds such as
metal floor strips and machine frames.
Observe the special safety precautions when you work
with very high voltages; these instructions are in the
safety sections of maintenance information. Use
extreme care when measuring high voltages.
v Regularly inspect and maintain your electrical hand tools
for safe operational condition.
v Do not use worn or broken tools and testers.
v Never assume that power has been disconnected from
a circuit. First, check that it has been powered off.
v Always look carefully for possible hazards in your work
area. Examples of these hazards are moist floors,
nongrounded power extension cables, power surges,
and missing safety grounds.
v Do not touch live electrical circuits with the reflective
surface of a plastic dental mirror. The surface is
conductive; such touching can cause personal injury and
machine damage.
v Do not service the following parts with the power on
when they are removed from their normal operating
places in a machine:
– Power supply units
– Pumps
– Blowers and fans
– Motor generators
and similar units. (This practice ensures correct
grounding of the units.)
v If
–
–
–

18

an electrical accident occurs:
Use caution; do not become a victim yourself.
Switch off power.
Send another person to get medical aid.

ThinkPad G40, G41

Safety information

Safety inspection guide
The purpose of this inspection guide is to assist you in
identifying potentially unsafe conditions. As each machine
was designed and built, required safety items were
installed to protect users and service personnel from injury.
This guide addresses only those items. You should use
good judgment to identify potential safety hazards due to
attachment of non-ThinkPad features or options not
covered by this inspection guide.
If any unsafe conditions are present, you must determine
how serious the apparent hazard could be and whether
you can continue without first correcting the problem.
Consider these conditions and the safety hazards they
present:
v Electrical hazards, especially primary power (primary
voltage on the frame can cause serious or fatal
electrical shock)
v Explosive hazards, such as a damaged CRT face or a
bulging capacitor
v Mechanical hazards, such as loose or missing hardware
To determine whether there are any potentially unsafe
conditions, use the following checklist at the beginning of
every service task. Begin the checks with the power off,
and the power cord disconnected.
Checklist:
1. Check exterior covers for damage (loose, broken, or
sharp edges).
2. Power-off the computer. Disconnect the power cord.
3. Check the power cord for:
a. A third-wire ground connector in good condition.
Use a meter to measure third-wire ground
continuity for 0.1 ohm or less between the external
ground pin and frame ground.
b. The power cord should be the type specified in the
parts list.
c. Insulation must not be frayed or worn.
4. Remove the cover.
5. Check for any obvious non-ThinkPad alterations. Use
good judgment as to the safety of any non-ThinkPad
alterations.
6. Check inside the unit for any obvious unsafe
conditions, such as metal filings, contamination, water
or other liquids, or signs of fire or smoke damage.
7. Check for worn, frayed, or pinched cables.

Introduction

19

Safety information

8. Check that the power-supply cover fasteners (screws
or rivets) have not been removed or tampered with.

Handling devices that are sensitive to
electrostatic discharge
Any computer part containing transistors or integrated
circuits (ICs) should be considered sensitive to electrostatic
discharge (ESD.) ESD damage can occur when there is a
difference in charge between objects. Protect against ESD
damage by equalizing the charge so that the machine, the
part, the work mat, and the person handling the part are all
at the same charge.

Notes
1. Use product-specific ESD procedures when they
exceed the requirements noted here.
2. Make sure that the ESD protective devices you
use have been certified (ISO 9000) as fully
effective.
When handling ESD-sensitive parts:
v Keep the parts in protective packages until they are
inserted into the product.
v Avoid contact with other people.
v Wear a grounded wrist strap against your skin to
eliminate static on your body.
v Prevent the part from touching your clothing. Most
clothing is insulative and retains a charge even when
you are wearing a wrist strap.
v Use the black side of a grounded work mat to provide a
static-free work surface. The mat is especially useful
when handling ESD-sensitive devices.
v Select a grounding system, such as those listed below,
to provide protection that meets the specific service
requirement.

Note
The use of a grounding system is desirable but
not required to protect against ESD damage.
– Attach the ESD ground clip to any frame ground,
ground braid, or green-wire ground.
– Use an ESD common ground or reference point
when working on a double-insulated or
battery-operated system. You can use coax or
connector-outside shells on these systems.

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Safety information

– Use the round ground-prong of the AC plug on
AC-operated computers.

Grounding requirements
Electrical grounding of the computer is required for
operator safety and correct system function. Proper
grounding of the electrical outlet can be verified by a
certified electrician.

Laser compliance statement
Some models of ThinkPad computer are equipped from
the factory with an optical storage device such as a
CD-ROM drive or a DVD-ROM drive. Such devices are
also sold separately as options. If one of these drives is
installed, it is certified in the U.S. to conform to the
requirements of the Department of Health and Human
Services 21 Code of Federal Regulations (DHHS 21 CFR)
Subchapter J for Class 1 laser products. Elsewhere, the
drive is certified to conform to the requirements of the
International Electrotechnical Commission (IEC) 825 and
CENELEC EN 60 825 for Class 1 laser products.

Introduction

21

Laser compliance statement

If a CD-ROM drive, a DVD-ROM drive, or another laser
device is installed, note the following:

CAUTION:

Use of controls or adjustments or performance of
procedures other than those specified herein might
result in hazardous radiation exposure.
O uso de controles, ajustes ou desempenho de
procedimentos diferentes daqueles aqui
especificados pode resultar em perigosa exposição
à radiação.

Pour éviter tout risque d’exposition au rayon laser,
respectez les consignes de réglage et d’utilisation
des commandes, ainsi que les procédures décrites.
Werden Steuer- und Einstellelemente anders als
hier festgesetzt verwendet, kann gefährliche
Laserstrahlung auftreten.

L’utilizzo di controlli, regolazioni o l’esecuzione di
procedure diverse da quelle specificate possono
provocare l’esposizione a.

El uso de controles o ajustes o la ejecución de
procedimientos distintos de los aquí especificados
puede provocar la exposición a radiaciones
peligrosas.

Opening the CD-ROM drive, the DVD-ROM drive, or any
other optical storage device could result in exposure to
hazardous laser radiation. There are no serviceable parts
inside those drives. Do not open.

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Laser compliance statement

A CD-ROM drive, a DVD-ROM drive, or any other storage
device installed may contain an embedded Class 3A or
Class 3B laser diode. Note the following:

DANGER

Emits visible and invisible laser radiation when
open. Do not stare into the beam, do not view
directly with optical instruments, and avoid direct
exposure to the beam.
Radiação por raio laser ao abrir. Não olhe fixo no
feixe de luz, não olhe diretamente por meio de
instrumentos óticos e evite exposição direta com o
feixe de luz.

Rayonnement laser si carter ouvert. Évitez de fixer
le faisceau, de le regarder directement avec des
instruments optiques, ou de vous exposer au
rayon.
Laserstrahlung bei geöffnetem Gerät. Nicht direkt
oder über optische Instrumente in den Laserstrahl
sehen und den Strahlungsbereich meiden.
Kinyitáskor lézersugár ! Ne nézzen bele se szabad
szemmel, se optikai eszközökkel. Kerülje a
sugárnyalábbal való érintkezést !.
Aprendo l’unità vengono emesse radiazioni laser.
Non fissare il fascio, non guardarlo direttamente
con strumenti ottici e evitare l’esposizione diretta al
fascio.

Radiación láser al abrir. No mire fijamente ni
examine con instrumental óptico el haz de luz.
Evite la exposición directa al haz.

Introduction

23

Laser compliance statement

24

ThinkPad G40, G41

General descriptions
The desciptions in this chapter apply to any ThinkPad
model that has the PC-Doctor® for DOS diagnostics
program. Some descriptions might not apply to your
particular computer.

Read this first
Before you go to the checkout guide, be sure to read this
section.

Important notes
v Only certified trained personnel should
service the computer.
v Read the entire FRU removal and replacement
page before replacing any FRU.
v Use new nylon-coated screws when you
replace FRUs.
v Be extremely careful during write operations
such as copying, saving, or formatting. The
drive startup sequence in the computer you are
servicing might have been changed. If you select
an incorrect drive, data or programs might be
overwritten.
v Replace FRUs only for the correct model.
When you replace a FRU, make sure the model
of the machine and the FRU part number are
correct by referring to the FRU parts list.
v A FRU should not be replaced because of a
single, unreproducible failure. Single failures
can occur for a variety of reasons that have
nothing to do with a hardware defect, such as
cosmic radiation, electrostatic discharge, or
software errors. Consider replacing a FRU only
when a problem recurs. If you suspect that a
FRU is defective, clear the error log and run the
test again. If the error does not recur, do not
replace the FRU.
v Be careful not to replace a nondefective FRU.

What to do first
When you do return a FRU, you must include the following
information in the parts exchange form or parts return form
that you attach to it:
__ 1. Name and phone number of servicer
__ 2. Date of service
© Lenovo 2005. Portions © IBM Corp. 2005.

25

Read this first

__ 3. Date on which the machine failed
__ 4. Date of purchase
__ 5. Failure symptoms, error codes appearing on the
display, and beep symptoms
__ 6. Procedure index and page number in which the
failing FRU was detected
__ 7. Failing FRU name and part number
__ 8. Machine type, model number, and serial number
__ 9. Customer’s name and address
Note for warranty:
During the warranty period, the customer may be
responsible for repair costs if the computer damage was
caused by misuse, accident, modification, unsuitable
physical or operating environment, or improper
maintenance by the customer. The following list provides
some common items that are not covered under warranty
and some symptoms that might indicate that the system
was subjected to stress beyond normal use.
Before checking problems with the computer, determine
whether the damage is covered under the warranty by
referring to the following:
The following are not covered under warranty:
v LCD panel cracked from the application of excessive
force or from being dropped
v Scratched (cosmetic) parts
v Distortion, deformation, or discoloration of the cosmetic
parts
v Cracked or broken plastic parts, broken latches, broken
pins, or broken connectors caused by excessive force
v Damage caused by liquid spilled into the system
v Damage caused by the improper insertion of a PC Card
or the installation of an incompatible card
v Damage caused by foreign material in the diskette drive
v Diskette drive damage caused by pressure on the
diskette drive cover or by the insertion of a diskette with
multiple labels
v Damaged or bent diskette eject button
v Fuses blown by attachment of a nonsupported device
v Forgotten computer password (making the computer
unusable)
v Sticky keys caused by spilling a liquid onto the keyboard
The following symptoms might indicate damage
caused by nonwarranted activities:
v Missing parts might be a symptom of unauthorized
service or modification.

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ThinkPad G40, G41

Read this first

v If the spindle of a hard disk drive becomes noisy, it may
have been subjected to excessive force, or dropped.

General descriptions

27

Related service information

Related service information
This section provides information about the following:
v “Service Web site”
v “Restoring the preloaded system”
v “Passwords” on page 30
v “Power management” on page 33

Service Web site
When the latest maintenance diskette and the system
program service diskette become available, they will be
posted on http://www.lenovo.com/think/spm

Restoring the preloaded system
If the data on a hard disk drive is damaged or accidentally
erased, you can restore the software that was shipped with
the computer. This software includes the pre-installed
operating system, applications, and device drivers.
To restore the pre-installed software, you can use either
the Product Recovery program or a recovery CD.

Ordering the recovery CD
When the hard disk drive is replaced because of a
failure, no Product Recovery program is on the new
hard disk. In this case, you must use the Product
Recovery CD for the computer. Order the recovery
CD and the hard disk drive at the same time so that
you can recover the new hard disk drive with the
pre-installed software when they arrive. For
information on which CD to order, and the latest
procedure on how to do so, see “Recovery CDs” on
page 150.
The Product Recovery program is in the Predesktop Area,
a section of the hard disk drive that is not displayed by
Windows Explorer.
Note: The recovery process might take up to 2 hours.
Attention: All of the files on the primary hard disk
partition (usually drive C) will be lost in the recovery
process. Be sure to back up copies of the files you have
saved on your drive C before you begin.
To use the Product Recovery program to install your
pre-installed software, do the following:
1. If possible, save all your files to media other than your
hard disk.
2. Turn off your computer.

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Related service information

3. Turn on your computer. At the prompt, press the
Access IBM button. (The prompt “To interrupt normal
startup, press the blue Access IBM button” appears for
only a few seconds. You must press the Access IBM
button quickly.) The Predesktop Area appears on the
screen. Next, double-click the “Recover to factory
contents” icon. The Product Recovery program main
menu opens.
4. Select the recovery options you want, and then follow
the instructions on the screeen.
5. When the Product Recovery program finishes, your
computer will restart and begin the configuration
process.

Using the recovery CD
You can delete the Predesktop Area partition by going into
the BIOS Setup Utility (F1 at IBM Splash Screen), and
then choosing Security -> IBM Predesktop Area -->
Disabled. This will make the Predesktop Area available to
FDISK. If you choose Disabled, the following warning
appears:
Attention! If you select Disabled, the IBM Predesktop Area
will be visible and can be reclaimed by the OS. Once the
area is overwritten by OS tools, it can’t be used with
Normal or Secure again and you will need to obtain a
Recovery CD to retrieve original HDD. Please confirm that
you wish to select Disabled.
FDISK will not delete the Predesktop Area unless you do
this, because it is not visible. You would have to use
ThinkPad Maintenance Diskette to completely wipe the
drive.
To create the Predesktop Area and install the preloaded
system from the recovery CD, do the following:
To create the Predesktop Area:
1. Erase all partitions on the hard disk drive, using FDISK
or a similar application.
2. Boot with the recovery CD (and the boot diskette if
required).
3. The following message is displayed: “Your computer
originally included a Product Recovery program ...
Reinstall the Product Recovery program? (Y/N) [ ]”.
Note: If the hard disk drive contains any partition, you
do not receive this message; go to step 1.
4. Press the Y key. The Predesktop Area is created and
loaded with the Product Recovery program files.

General descriptions

29

Related service information

Note: If you do not want to create the Predesktop
Area, press the N key, and then go to step 8.
5. At the next window, press Enter to continue.
v The Predesktop Area is created. The system
automatically reboots during this process.
v The recovery process copies some files to the
Predesktop Area, and PKUNZIPs others.
v Follow the prompts. You may be prompted to
change CDs.
v When the process is complete, the system reboots.
Continue to step 6 to install preloaded system.
Install the preloaded system from the CD:
6. Boot with the recovery CD (and the boot diskette if
required.)
7. If the hard disk drive is blank, the following message
is displayed: “Your computer originally included a
Product Recovery program ... Reinstall the
Product Recovery program? (Y/N) [ ]”.
v To install the Predesktop Area, go to step 4.
v To preload the hard disk drive without installing the
Predesktop Area, press the N key.
8. If you get a message asking which operating system
to install, select the proper operating system and
press Enter.
9. A message is displayed: “Full Recovery:”. Press
Enter to select.
10. On each of the next three windows, press the Y key.
11. Follow the prompts to complete the recovery.

Passwords
As many as three passwords may be needed for any
ThinkPad computer: the power-on password (POP), the
hard disk password (HDP), and the supervisor password
(SVP).
If any of these passwords has been set, a prompt for it
appears on the screen whenever the computer is turned
on. The computer does not start until the password is
entered.
Exception: If only an SVP is installed, the password
prompt does not appear when the operating
system is booted.

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Related service information

Power-on password:
A power-on password (POP) protects the system from
being powered on by an unauthorized person. The
password must be entered before an operating system can
be booted.

Hard disk password:
There are two hard disk passwords (HDPs):
v User HDP—for the user
v Master HDP—for the system administrator, who can use
it to get access to the hard disk even if the user has
changed the user HDP
Note: There are two modes for the HDP: User only and
Master + User. The Master + User mode requires
two HDPs; the system administrator enters both in
the same operation. The system administrator then
provides the user HDP to the system user.
Attention: If the user HDP has been forgotten, check
whether a master HDP has been set. If it has, it can be
used for access to the hard disk drive. If no master HDP is
available, neither Lenovo nor Lenovo authorized servicers
provide any services to reset either the user or the master
HDP, or to recover data from the hard disk drive. The hard
disk drive can be replaced for a scheduled fee.

Supervisor password:
A supervisor password (SVP) protects the system
information stored in the BIOS Setup Utility. The SVP must
be entered in order to get access to the BIOS Setup Utility
and make changes to system configuration settings.
Attention: If the SVP has been forgotten and cannot be
made available to the servicer, there is no service
procedure to reset the password. The system board must
be replaced for a scheduled fee.

How to remove the power-on password
To remove a POP that has been forgotten, do the
following:
(A) If no SVP has been set:
1. Turn off the computer.
2. Remove the battery pack.
For how to remove the battery pack, see “1010 Battery
pack” on page 66.
3. Remove the backup battery.
For how to remove the backup battery, see “1060
Backup battery” on page 72.
General descriptions

31

Related service information

4. Turn on the computer and wait until the POST ends.
After the POST ends, the password prompt does not
appear. The POP has been removed.
5. Reinstall the backup battery and the battery pack.
(B) If an SVP has been set and is known by the servicer:
1. Turn on the computer; then, while the “To interrupt
normal startup, press F1” message is displayed at the
lower-left of the screen, press F1.
2. Enter the SVP. Select Start setup utility.
3. Select Security, using the cursor keys to move down
the menu.
4. Select Password.
5. Select Power-On Password.
6. At the Enter Current Password field, enter the SVP.
7. When the Enter New Password field opens, leave it
blank and press Enter twice.
8. In the Changes have been saved window, press Enter.
9. Press F10; then, in the Setup confirmation window,
select Yes.

How to remove the hard disk password
Attention: If User only mode is selected and the user
HDP has been forgotten and cannot be made available to
the neither Lenovo nor Lenovo authorized servicers
provide any services to reset the user HDPs or to recover
data from the hard disk drive. The hard disk drive can be
replaced for a scheduled fee.
To remove a user HDP that has been forgotten, when the
SVP and the master HDP are known, do the following:
1. Turn on the computer; then, while the “To interrupt
normal startup, press the blue Access IBM button”
message is displayed at the lower-left of the screen,
press the Access IBM button.
2. Enter Master HDP. Select Start setup utility. Enter
SVP.
3. Select Security, using the cursor keys to move down
the menu.
4. Select Password.
5. Select Hard-disk x password, where x is the letter of
the hard disk drive. A pop-up window opens.
6. Select Master HDP.
7. Enter the master HDP; then leave the New Password
field blank and press Enter twice.
8. Press F10.
9. Select Yes in the Setup Configuration window.

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Related service information

Both user HDP and master HDP will have been
removed.

Power management
To reduce power consumption, the computer has three
power management modes: screen blank, standby, and
hibernation.

Screen blank mode
Screen blank mode has three variants, as follows:
1. If you are using the ACPI operating system and you
press Fn+F3,
v The LCD backlight turns off.
v The hard disk drive motor stops.
2. If the time set on the “Turn off monitor” timer in the
operating system expires,
v The LCD backlight turns off.
To end screen blank mode and resume normal operation,
press any key.

Standby mode
When the computer enters standby mode, the following
events occur in addition to what occurs in screen blank
mode:
v The LCD is powered off.
v The hard disk drive is powered off.
v The CPU stops.
To enter standby mode, press Fn+F4.
Note: You can change the action of Fn+F4, if you are
using the ACPI operating system.
In certain circumstances, the computer goes into standby
mode automatically:
v If a “suspend time” has been set on the timer, and the
user does not do any operation with the keyboard, the
TrackPoint, the hard disk, the parallel connector, or the
diskette drive within that time.
v If the battery indicator blinks orange, indicating that the
battery power is low. (Alternatively, if Hibernate when
battery becomes low has been selected in the “Power
Management Properties” window, the computer goes
into hibernation mode.)

Hibernation mode
In hibernation mode, the following occurs:
v The system status, RAM, VRAM, and setup data are
stored on the hard disk.
v The system is powered off.
General descriptions

33

Related service information

To cause the computer to enter hibernation mode, do any
of the following:
v Press the Fn+F12 keys.
v If you are using the ACPI operating system and have
defined one of the following actions as the event that
causes the system to go into hibernation mode, perform
that action.
– Closing the lid.
– Pressing the power button.
– Pressing Fn+F4 keys.
Also, the computer goes into hibernation mode
automatically in either of the following conditions:
v If a “hibernation time” has been set on the timer, and the
user does not do any operation with the keyboard, the
TrackPoint, the hard disk drive, the parallel connector, or
the diskette drive within that time.
v If the timer conditions are satisfied in suspend mode.
When the power is turned on, the computer returns from
hibernation mode and resumes operation. The hibernation
file in the boot record on the hard disk drive is read, and
system status is restored from the hard disk drive.

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Checkout guide

Checkout guide
Use the following procedures as a guide in identifying and
correcting problems with the ThinkPad computer.
Note: The diagnostic tests are intended to test only
ThinkPad products. The use of non-ThinkPad
products, prototype cards, or modified options can
lead to false indications of errors and invalid system
responses.
1. Identify the failing symptoms in as much detail as
possible.
2. Verify the symptoms. Try to re-create the failure by
running the diagnostic test or by repeating the
operation.

Testing the computer
The ThinkPad computer has a test program called
PC-Doctor® for DOS (hereafter called PC-Doctor.) You can
detect errors by running the diagnostics test included in
PC-Doctor. This section is an overview of the procedure.
For details that depend on model-unique functions, refer to
“Product overview” on page 45.
For some possible configurations of the computer,
PC-Doctor might not run correctly. To avoid this problem,
you need to initialize the computer setup by use of the
BIOS Setup Utility before you run PC-Doctor. On the BIOS
Setup Utility screen, press F9, Enter, F10, and then Enter.
Note: When you initialize the computer configuration,
some devices are disabled, such as the serial port.
If you test one of these devices, you will need to
enable it by using PS2.EXE.
To run the test, do as follows:
Note: In the following procedure, you can select an item
not only with the arrow keys, but also with the
TrackPoint. Instead of pressing Enter, click the left
button.
1. Insert the PC-Doctor disk into the diskette drive; then
power on the computer.
If the computer cannot be powered on, go to “Power
system checkout” on page 38, and check the power
sources.
If an error code appears, go to “Symptom-to-FRU
index” on page 52.
On the first screen, select the model and press Enter.
Follow the instructions on the screen.
2. The main panel of PC-Doctor appears.
General descriptions

35

Checkout guide

3. Select Diagnostics with the arrow keys, and press
Enter.
A pull-down menu appears. (Its exact form depends on
the model.)
Note: PC-Doctor menu does not mean the formal
support device list. Some unsupported device
name may appear in the PC-Doctor menu.
The options on the test menu are as follows:
Diagnostics
v
v
v
v
v
v
v
v
v
v
v
v
v

Run Normal Test
Run Quick Test
CPU/Coprocessor
Systemboard
Video Adapter
Parallel Ports
Fixed Disks
Diskette Drives
Other Devices
Communication
Wireless LAN
Memory Test – Full
Memory Test – Quick

Interactive Tests
v
v
v
v
v
v
v
v

Keyboard
Video
Internal Speaker
Mouse
Diskette
System Load
CD-ROM/DVD Test
Actiontec Wireless Radio

Notes:
v In the Keyboard test in Interactive Tests, the Fn key should
be held down for at least 2 seconds; otherwise, it cannot be
sensed.
v Video Adapter test supports only the LCD display on the
ThinkPad computer. Before running PC-Doctor for DOS, detach
the external monitor.

4. Run the applicable function test.
5. Follow the instructions on the screen. If there is a
problem, PC-Doctor shows messages describing it.
6. To exit the test, select Quit — Exit Diag.
To cancel the test, press Esc.
Note: After executing PC-Doctor, check the system
time/date and reset them if needed.

36

ThinkPad G40, G41

Checkout guide

Detecting system information with
PC-Doctor
PC-Doctor can detect the following system information:

Hardware Info
v
v
v
v
v
v
v
v
v
v

System Configuration
Memory Contents
Physical Disk Drives
Logical Disk Drives
VGA Information
IDE Drive Info
PCI Information
PNPISA Info
SMBIOS Info
VESA LCD Info

Utility
v
v
v
v
v
v
v
v
v
v
v

Run External Tests
Surface Scan Hard Disk
Benchmark System
DOS Shell
Tech Support Form
Battery Rundown
View Test Log
Print Log
Save Log
Full Erase Hard Drive
Quick Erase Hard Drive

General descriptions

37

Checkout guide

Power system checkout
To verify a symptom, do the following:
1. Power off the computer.
2. Remove the battery pack.
3. Connect the ac adapter.
4. Check that power is supplied when you power on the
computer.
5. Power off the computer.
6. Disconnect the ac adapter and install the charged
battery pack.
7. Check that the battery pack supplies power when you
power on the computer.
If you suspect a power problem, see the appropriate one
of the following power supply checkouts:
v “Checking the ac adapter”
v “Checking operational charging” on page 39
v “Checking the battery pack” on page 39
v “Checking the backup battery” on page 40

Checking the ac adapter
You are here because the computer fails only when the ac
adapter is used:
v If the power-on indicator does not turn on, check the
power cord of the ac adapter for correct continuity and
installation.
v If the computer does not charge during operation, go to
″Checking operational charging.″
To check the ac adapter, do the following:
1. Unplug the ac adapter cable from the computer.
2. Measure the output voltage at the plug of the ac
adapter cable. See the following figure:

1

2
3

4

Pin

Voltage (V dc)

1

Vcc_+ 16V

2

Ground

3

Vcc_+ 16V

4

Ground

3. If the voltage is not correct, replace the ac adapter.
4. If the voltage is acceptable, do the following:
v Replace the system board.

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ThinkPad G40, G41

Checkout guide

v If the problem persists, go to “Product overview” on
page 45.
Note: Noise from the ac adapter does not always indicate
a defect.

Checking operational charging
To check whether the battery charges properly during
operation, use a discharged battery pack or a battery pack
that has less than 50% of the total power remaining when
installed in the computer.
Perform operational charging. If the battery status indicator
or icon does not turn on, remove the battery pack and let it
return to room temperature. Reinstall the battery pack. If
the charge indicator or icon still does not turn on, replace
the battery pack.
If the charge indicator still does not turn on, replace the
system board. Then reinstall the battery pack. If it is still
not charged, go to the next section.

Checking the battery pack
Battery charging does not start until the Power Meter
shows that less than 95% of the total power remains;
under this condition the battery pack can charge to 100%
of its capacity. This protects the battery pack from being
overcharged or from having a shortened life.
To check the status of your battery, move your cursor to
the Power Meter icon in the icon tray of the Windows
taskbar and wait for a moment (but do not click), and the
percentage of battery power remaining is displayed. To get
detailed information about the battery, double-click the
Power Meter icon.
Note: If the battery pack becomes hot, it may not be able
to charge. Remove it from the computer and leave it
at room temperature for a while. After it cools down,
reinstall and recharge it.
To check the battery pack, do the following:
1. Power off the computer.
2. Remove the battery pack and measure the voltage
between battery terminals 1 (+) and 5 (−). See the
following figure:

General descriptions

39

Checkout guide

Terminal

Voltage (V dc)

1

+ 0 to + 12.6
(Li-ion)

5

Ground

3. If the voltage is less than +11.0 V dc, the battery pack
has been discharged.
Note: Recharging will take at least 3 hours, even if the
indicator does not turn on.
If the voltage is still less than +11.0 V dc after
recharging, replace the battery.
4. If the voltage is more than +11.0 V dc, measure the
resistance between battery terminals 4 and 5. The
resistance must be 4 to 30 K 
.
If the resistance is not correct, replace the battery
pack. If the resistance is correct, replace the system
board.

Checking the backup battery
The backup battery is rechargeable.
To check the backup battery, do the following:
1. Power off the computer, and unplug the ac adapter
from it.
2. Turn the computer upside down.
3. Remove the battery pack (see “1010 Battery pack” on
page 66).
4. Remove the backup battery (see “Checking the battery
pack” on page 39).
5. Measure the voltage of the backup battery. See the
following figure.

Terminal

Voltage (V dc)

+

+2.5 to +3.2

-

Ground

v If the voltage is not correct, recharge the backup battery
by connecting the ac adapter to the computer for one
hour.
v If the voltage is still not correct, replace the backup
battery.

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ThinkPad G40, G41

Checkout guide

v If the backup battery discharges quickly after
replacement, replace the system board.
Note: The backup battery, which is used to preserve
configuration information, such as the date and
time while the computer is turned off, is depleted.

General descriptions

41

Checkout guide

42

ThinkPad G40, G41

ThinkPad G40, G41
Product overview . . . . . . . . . . .
Specifications . . . . . . . . . . .
Status indicators . . . . . . . . . .
FRU tests . . . . . . . . . . . .
Fn key combinations . . . . . . . . .
Symptom-to-FRU index . . . . . . . . .
Numeric error codes . . . . . . . . .
Error messages . . . . . . . . . .
Beep symptoms . . . . . . . . . .
No-beep symptoms . . . . . . . . .
LCD-related symptoms . . . . . . . .
Intermittent problems . . . . . . . . .
Undetermined problems . . . . . . . .
FRU replacement notices . . . . . . . .
Screw notices . . . . . . . . . . .
Retaining serial numbers. . . . . . . .
Restoring the serial number of the system unit
Retaining the UUID . . . . . . . .
Reading or writing the ECA information . .
Removing and replacing a FRU. . . . . . .
1010 Battery pack. . . . . . . . . .
1020 Hard disk drive . . . . . . . . .
1030 DIMM door . . . . . . . . . .
1040 DIMM . . . . . . . . . . .
1050 Modem daughter card (MDC) . . . .
1060 Backup battery . . . . . . . . .
1070 Keyboard . . . . . . . . . .
1080 Middle cover . . . . . . . . .
1090 Hinge cover . . . . . . . . . .
1095 FDD assembly . . . . . . . . .
1100 Blank bezel FDD assembly . . . . .
1110 VGA heatsink assembly . . . . . .
1120 VGA card assembly . . . . . . .
1130 CD-ROM/DVD drive and ODD bracket . .
1140 Mini PCI adapter . . . . . . . .
1150 PC card slot assembly . . . . . . .
1160 LCD and Keyboard bezel assembly . . .
1170 LCD assembly . . . . . . . . .
1180 Keyboard bezel . . . . . . . . .
1190 Fan assembly . . . . . . . . .
2000 Fan (CPU 3 GHz) and CPU fixture . . .
2010 CPU . . . . . . . . . . . .
2020 CD-ROM/DVD drive bracket . . . . .
2030 FDD bracket . . . . . . . . .
2040 System board . . . . . . . . .
2050 Lower case assembly . . . . . .
2060 Modem cable . . . . . . . . .
2070 PC card slot assembly . . . . . .
2080 LCD front bezel . . . . . . . .
2090 Inverter card . . . . . . . . .
© Lenovo 2005. Portions © IBM Corp. 2005.

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3000 Speaker assembly . . . . .
3010 LCD cable assembly . . . . .
3020 Wireless antenna and rear cover .
3030 LCD panel and hinge assembly . .
Locations . . . . . . . . . . .
Front view . . . . . . . . . .
Rear view . . . . . . . . . .
Bottom view . . . . . . . . .
Parts list . . . . . . . . . . .
G40, G41 series . . . . . . . .
Overall . . . . . . . . . .
LCD FRUs . . . . . . . . .
14.1 in. TFT . . . . . . . .
15 in. TFT . . . . . . . .
Keyboard . . . . . . . . . .
Recovery CDs . . . . . . . .
Windows XP Home Edition (for G40) .
Windows XP Home Edition (for G41) .
Windows XP Professional (for G40) .
Windows XP Professional (for G41) .
Windows 2000 (for G40) . . . .
Miscellaneous parts . . . . . . .
AC adapters . . . . . . . . .
Telephone cable . . . . . . . .
Optional FRUs . . . . . . . .
Common parts list . . . . . . .
Tools . . . . . . . . . .
Power cords . . . . . . . .
Notices . . . . . . . . . . .
Trademarks . . . . . . . . . .

44

ThinkPad G40, G41

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Product overview

Product overview
This section presents the following product-unique
information:
v “Specifications”
v “Status indicators” on page 47
v “FRU tests” on page 49
v “Fn key combinations” on page 51

Specifications
The following table lists the specifications of the ThinkPad
G40, G41 series:
Feature

Description

Processor

v Intel® Pentium® 4 processor
3.06/3.2/3.46/3.6/3.73 GHz, L2 512 KB cache
v Intel Celeron® processor 2.4/2.53/2.66/2.8
GHz, L2 128 KB cache

Bus
architecture

v
v
v
v
v

Memory
(standard)

v 128 MB DDR SDRAM SO DIMM (PC2700)
card × 1
v 256 MB DDR SDRAM SO DIMM (PC2700)
card × 1
v 512 MB DDR SDRAM SO DIMM (PC2700)
card × 1

Memory
(optional)

v 128 MB DDR SDRAM SO DIMM (PC2700)
card
v 256 MB DDR SDRAM SO DIMM (PC2700)
card
v 512 MB DDR SDRAM SO DIMM (PC2700)
v 1024 MB DDR SDRAM SO DIMM (PC2700)

400 MHz FSB
HUB link
PCI bus
LPC bus
333 MHz DDR SDRAM (PC2700)

(maximum of 2048 MB)
Graphic
memory

v UMA architecture

CMOS RAM

v 242 bytes

hard disk drive

v
v
v
v
v

30.0
40.0
40.0
60.0
80.0

GB,
GB,
GB,
GB,
GB,

4200
4200
5400
7200
5400

rpm,
rpm,
rpm,
rpm,
rpm,

2.5-inch,
2.5-inch,
2.5-inch,
2.5-inch,
2.5-inch,

IDE
IDE
IDE
IDE
IDE

interface
interface
interface
interface
interface

(continued)

ThinkPad G40, G41

45

Product overview
Feature

Description

Display

v 14.1-inch, 16M colors, XGA (1024 × 768
resolution) TFT color LCD
v 15-inch, 16M colors, XGA (1024 × 768
resolution) TFT color LCD
v 15-inch, 16M colors, SXGA+ (1400 × 1050
resolution) TFT color LCD

I/O port

v
v
v
v
v
v
v
v

Audio

v Internal monaural speaker
v Software control volume

Mini PCI
adapter

v IEEE 802.11b wireless LAN card
v IEEE 802.11a/b wireless LAN Combo card

PC Cards

v Type-II: two slots
v Type-III: one slot

Modem card

v V.90 (V.92 design) modem daughter card
(MDC-2)

AC adapter

v 120-watt type

Fixed bays

v
v
v
v

Preinstalled
operating
system

46

External monitor connector
Stereo headphone jack
Monaural microphone jack
Parallel connector
RJ11 connector
RJ45 connector
PS/2 mouse connector
Universal serial bus (USB) connector × 4

CD-ROM drive
DVD drive
CD-RW/DVD drive
FDD drive
Windows XP Home Edition
Windows XP Professional
Windows 2000 Professional (Japan only)

ThinkPad G40, G41

Product overview

Status indicators
The system status indicators show the status of the
computer, as follows:

1

2

3

4

Indicator

Meaning


1 Wireless
status

Green:

5

6

7

Wireless is operational. This
indicator is on when the Wireless is
on and not in suspend mode.
Blinking green:
Data is being transmitted.

Note: The wireless indicator is only available on selected
models.
(continued)

ThinkPad G40, G41

47

Product overview
Indicator

Meaning


2 Num lock

Green:

The numeric keypad on the
keyboard is enabled. To enable or
disable the keypad, press and hold
the Shift key, and press the NumLk
(ScrLk) key.


3 Caps lock

Green:

Caps Lock mode is enabled. To
enable or disable Caps Lock mode,
press the Caps Lock key.


4 Drive in
use

Green:

Data is being read from or written
to the hard disk drive or the
diskette drive. When this indicator
is on, do not put the computer into
standby mode or turn off the
computer.

Note: Do not move the system while the
green drive-in-use light is on. Sudden physical
shock could cause drive errors.

5 Power on

Green:


6 Battery
status

Green:

The computer is on and ready to
use. This indicator stays lit
whenever the computer is on and
is not in standby mode.

The battery is in use and has
enough power. The ac adapter has
charged the battery completely.
Blinking green:
The battery is being charged, but
still has enough power to operate.
(At regular intervals, the indicator
light turns off briefly.)
Orange: The battery is being charged, but
the battery power is still low.
Blinking orange:
The battery needs to be charged.
When the indicator starts blinking
orange, the computer beeps three
times.
Note: If an unauthorized battery is installed,
this indicator starts blinking orange.


7 Standby
status

48

Green:
The computer is in standby mode.
Blinking green:
The computer is entering standby
mode or hibernation mode, or is
resuming normal operation.

ThinkPad G40, G41

Product overview

FRU tests
The following table shows the test for each FRU.
FRU

Applicable test

System board

1. Diagnostics --> CPU/Coprocessor
2. Diagnostics --> Systemboard

Power

Diagnostics --> Other Devices --> AC
Adapter, Battery 1

LCD unit

1. Diagnostics --> Video Adapter
2. Interactive Tests --> Video

Modem, MDC-2 1. Make sure the modem is set up correctly.
2. Replace the modem jack and the modem
card in turn, and run the following tests in
Diagnostics --> Communication:
a. Lucent Soft Modem Loopback
b. Lucent Soft Modem Dialtone
Audio

1. Interactive Tests --> Internal Speaker
2. Diagnostics --> Other Devices --> Analog
Devices AC97 CODEC Test

Speaker

Interactive Tests --> Internal Speaker

PC Card slots

1. Diagnostics --> Systemboard --> PCMCIA
2. Insert a PC Card Wrap Plug into every PC
Card Slot and run Diagnostics -->
Systemboard --> PCMCIA External Loop

Keyboard

1. Diagnostics --> Systemboard -->
Keyboard
2. Interactive Tests --> Keyboard

TrackPoint or
pointing device

If the TrackPoint does not work, check the
configuration in the ThinkPad Configuration
program. If the TrackPoint is disabled, select
Enable to enable it.
After you use the TrackPoint, the pointer may
drift on the screen for a short time. This drift
can occur when a slight, steady pressure is
applied to the TrackPoint pointer. This symptom
is not a hardware problem. If the pointer stops
after a short time, no service action is
necessary.
If enabling the TrackPoint does not correct the
problem, continue with the following:
v Interactive Tests --> Mouse

Hard disk drive

Diagnostics --> Fixed Disks

Diskette drive

1. Diagnostics --> Diskette Drives
2. Interactive Tests --> Diskette

(continued)

ThinkPad G40, G41

49

Product overview
FRU

Applicable test

CD-ROM or
DVD drive

1. Diagnostics --> Other Devices -->
CD-ROM/DVD
2. Interactive Tests --> CD-ROM/DVD Test

Memory

1. If two DIMMs are installed, remove one of
them and run Diagnostics --> Memory
Test—Quick.
2. If the problem does not recur, return the
DIMM to its place, remove the other one,
and run the test again.
3. If the test does not detect the error, run
Diagnostics --> Memory Test—Full.

Fan

1. Turn on the computer and check the air
turbulence at the louver near the power
switch.
2. Run Diagnostics --> Other Devices -->
Fan.

50

ThinkPad G40, G41

Product overview

Fn key combinations
The following table shows the function of each combination
of Fn with a function key.
Key
combination

Description

Fn+F1

Reserved.

Fn+F2

Reserved.

Fn+F3

Turn off the LCD display, leaving the screen
blank. To turn the LCD display on again, press
any key or the TrackPoint stick.

Fn+F4

Put the computer in standby mode. To return to
normal operation, press the Fn key
independently, without pressing a function key.
Note: The setting can be changed so that
pressing it puts the computer into hibernation
mode or even shuts the computer down.

Fn+F5

Open the Wireless Radio Control screen.
Note: To use this function, the PM device
driver must be installed on the computer.

Fn+F6

Reserved.

Fn+F7

Switch between the computer display and an
external monitor (CRT). If an external monitor is
attached, computer output is displayed in the
following three patterns in turn:
v CRT display
v Computer display + CRT display
v Computer display
Note: This setting can be changed so that
pressing it starts a presentation scheme directly
with no need to start Presentation Director.

Fn+F9

Open the EasyEject Utility screen.
Note: This function is supported only in
Windows XP and Windows 2000.

Fn+F10

Reserved.

Fn+F11

Reserved.

Fn+F12

Put the computer into hibernation mode. To
return to normal operation, press the power
button for less than four seconds.
Note: To use Fn+F12 for hibernation, the PM
device driver must be installed on the computer.

Fn+Home

The computer display becomes brighter.

Fn+End

The computer display becomes less bright.

Fn+Spacebar

Enable the FullScreen Magnifier function.

ThinkPad G40, G41

51

Symptom-to-FRU index

Symptom-to-FRU index
The symptom-to-FRU index in this section lists symptoms
and errors and their possible causes. The most likely
cause is listed first, in boldface type.
Note: Do the FRU replacement or other actions in the
sequence shown in the column headed “FRU or
action, in sequence.” If replacing a FRU does not
solve the problem, put the original part back in the
computer. Do not replace a nondefective FRU.
This index can also help you determine, during regular
servicing, what FRUs are likely to need to be replaced
next.
A numeric error is displayed for each error detected in
POST or system operation. In the displays, n can be any
number.
If no numeric code is displayed, check the narrative
descriptions of symptoms. If the symptom is not described
there, go to “Intermittent problems” on page 60.

Note
For a device not supported by diagnostic codes in
the ThinkPad notebook computers, see the manual
for that device.

Numeric error codes
Symptom or error

FRU or action, in sequence

0175
Bad CRC1, stop
POST task—The
EEPROM checksum
is not correct.

System board.

0177
Bad SVP data, stop
POST task.

System board.

0182
Run BIOS Setup Utility and Load Setup
Defaults.
Bad CRC2. Enter
BIOS Setup and load
Setup Defaults.
0185
Bad startup
sequence settings.
Enter BIOS Setup
and load setup
defaults.

52

Run BIOS Setup Utility and Load Setup
Defaults

ThinkPad G40, G41

Symptom-to-FRU index
Symptom or error

FRU or action, in sequence

0187
EAIA data access
error—The access to
EEPROM is failed.

System board.

0188
Invalid RFID
serialization
information area or
bad CRC2—The
EEPROM checksum
is not correct.

System board.

0189
Invalid RFID
configuration
information
area—The EEPROM
checksum is not
correct.

System board.

0190
Critical low-battery
error

1. Charge the battery pack.
2. Battery pack.

0191
System Security —
Invalid remote
change requested.

The system configuration change has
failed. Confirm the operation and try
again. To clear the error, enter the BIOS
Setup Utility.

0199
System security —
IBM security
password retry count
exceeded.

1. Confirm supervisor password and
try again.
2. Run BIOS Setup Utility.

01C9
More than one
Ethernet devices are
found. Remove one
of them. Press
 to continue.

1. Remove either a Mini PCI Ethernet
card or an Ethernet daughter card;
or press Esc to ignore the warning
message.
2. System board.

0200
Hard disk error—The
hard disk is not
working.

1. Reseat the hard disk drive.
2. Load Setup Defaults in BIOS Setup
Utility.
3. Hard disk drive.
4. System board.

021x
Keyboard error

Run interactive tests of the keyboard
and the auxiliary input device.

0230
Shadow RAM
error—Shadow RAM
fails at offset nnnn.

System board.

0231
System RAM
error—System RAM
fails at offset nnnn.

1. DIMM.
2. System board.

0232
Extended RAM
error—Extended
RAM fails at offset
nnnn.

1. DIMM.
2. System board.

ThinkPad G40, G41

53

Symptom-to-FRU index
Symptom or error

FRU or action, in sequence

0250
System battery
error—System
battery is dead.

1. Recharge the backup battery for
one hour by connecting the ac
adapter to the computer and run
BIOS Setup Utility to verify the
configuration.
2. Replace the backup battery and run
BIOS Setup Utility to reset the time
and date.

0251
System CMOS
checksum
bad—Default
configuration used.

1. Recharge the backup battery for
one hour by connecting the ac
adapter to the computer and run
BIOS Setup Utility to verify the
configuration.
2. Replace the backup battery and run
BIOS Setup Utility to reset the time
and date.

0260
System timer error

1. Recharge the backup battery for
one hour by connecting the ac
adapter to the computer and run
BIOS Setup Utility to verify the
configuration.
2. Replace the backup battery and run
BIOS Setup Utility to reset the time
and date.
3. System board.

0270
Real time clock error

1. Recharge the backup battery for
one hour by connecting the ac
adapter to the computer and run
BIOS Setup Utility to verify the
configuration.
2. Replace the backup battery and run
BIOS Setup Utility to reset the time
and date.
3. System board.

0271
Date and time
error—Neither the
date nor the time is
set in the computer.

Run BIOS Setup Utility to reset the time
and date.

0280
Previous boot
incomplete—Default
configuration used.

1. Load “Setup Default” in BIOS Setup
Utility.
2. DIMM.
3. System board.

02D0
System cache error

1. CPU

02F4
EISA CMOS not
writable

1. Load Setup Defaults in BIOS Setup
Utility.
2. Recharge the backup battery for one
hour by connecting the ac adapter to
the computer and run BIOS Setup
Utility to verify the configuration.
3. Replace the backup battery.
4. System board.

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Symptom-to-FRU index
Symptom or error

FRU or action, in sequence

02F5
DMA test failed

1. DIMM.
2. System board.

02F6
Software NMI failed

1. DIMM.
2. System board.

02F7
Fail-safe timer NMI
failed

1. DIMM.
2. System board.

1802
Unauthorized
network card is
plugged in—Power
off and remove the
miniPCI network
card.

1. Remove Mini PCI network card.
2. System board.

1803
Unauthorized
daughter card is
plugged in—Power
off and remove the
daughter card.

1. Remove the daughter card.
2. System board.

1810
Hard disk partition
layout error

1. If the Access IBM Predesktop Area
has been previously disabled, then
go to the BIOS Setup Utility by
pressing F1 to open the BIOS Setup
Utility. Select Security->Predesktop
Area->Access IBM Predesktop Area.
Set this item to Disabled. Save and
Exit.
2. If the Access IBM Predesktop Area
has been previously disabled, press
Enter to load Access IBM Predesktop
Area. Then run RECOVER TO
FACTORY CONTENTS in Access IBM
Predesktop Area.
3. If item 2 failed, press F3 in the
welcome screen in RECOVER TO
FACTORY CONTENTS Run FDISK,
and then delete all partitions. Run
RECOVER TO FACTORY CONTENTS
in Access IBM Predesktop Area again.
4. If item 3 failed, select CD-ROM boot in
RECOVER TO FACTORY CONTENTS
Run FDISK, and then delete all
partitions. Run Startup in Access IBM
Predesktop Area. Boot from Recovery
CD and perform full recovery from it.
5. If item 4 failed, replace the hard disk
drive.

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Symptom-to-FRU index

Error messages
Symptom or error

FRU or action, in sequence

Device address
conflict.

1. Load “Setup Defaults” in BIOS
Setup Utility.
2. Recharge the backup battery for one
hour by connecting the ac adapter to
the computer and run BIOS Setup
Utility to verify the configuration.
3. Backup battery.
4. System board.

Allocation error for
device.

1. Load “Setup Defaults” in BIOS
Setup Utility.
2. Recharge the backup battery for one
hour by connecting the ac adapter to
the computer and run BIOS Setup
Utility to verify the configuration.
3. Backup battery.
4. System board.

Failing bits: nnnn.

1. DIMM.
2. System board.

Invalid system
configuration data.

1. DIMM.
2. System board.

I/O device IRQ
conflict.

1. Load “Setup Defaults” in BIOS
Setup Utility.
2. Recharge the backup battery for one
hour by connecting the ac adapter to
the computer and run BIOS Setup
Utility to verify the configuration.
3. Backup battery.
4. System board.

Operating system not 1. Check that the operating system has
found.
no failure and is installed correctly.
2. Enter BIOS Setup Utility and see
whether the hard disk drive and the
diskette drive are properly
identified.
3. Reseat the hard disk drive.
4. Reinstall the operating system.
5. Diskette drive.
6. Hard disk drive.
7. System board.
Hibernation error.

1. Restore the system configuration to
what it was before the computer
entered hibernation mode.
2. If memory size has been changed,
re-create the hibernation file.

Fan error.

Fan.

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Symptom-to-FRU index
Symptom or error

FRU or action, in sequence

EMM386 Not
Installed — Unable
to Set Page Frame
Base Address.

Edit C:\CONFIG.SYS and change a line
from
device=C:\WINDOWS\EMM386.EXE RAM
to
device=C:\WINDOWS\EMM386.EXE NOEMS
and save this file.

CardBus
Configuration Error
—Device Disabled

Press F1 to go to the BIOS Setup Utility.
Press F9 and then Enter to load the
default setting.
Press F10 and then Enter to restart the
system.

Thermal sensing
error.

System board.

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Symptom-to-FRU index

Beep symptoms
Symptom or error

FRU or action, in sequence

One beep and a blank,
unreadable, or flashing LCD.

1. Reseat the LCD
connector.
2. LCD assembly.
3. External CRT.
4. System board.

One long and two short beeps,
and a blank or unreadable
LCD.

1. System board.
2. LCD assembly.
3. DIMM.

Two short beeps with error
codes.

POST error. See “Numeric
error codes” on page 52.

Two short beeps and a blank
screen.

1. System board.
2. DIMM.

Three short beeps, pause,
three more short beeps, and
one short beep.

1. DIMM.
2. System board

One short beep, pause, three
short beeps, pause, three more
short beeps, and one short
beep.
Only cursor appears.

Reinstall operating system.

Five short beeps and a blank
screen.

System board

No-beep symptoms
Symptom or error

FRU or action, in sequence

No beep, power-on indicator
on, LCD blank, and no POST.

1. Make sure that every
connector is connected
tightly and correctly.
2. DIMM.
3. System board.

No beep, power-on indicator
on, and LCD blank during
POST.

1. Reseat DIMM.
2. System board.

The power-on password prompt
appears.

A power-on password or a
supervisor password is set.
Type the password and press
Enter.

The hard disk password prompt
appears.

A hard disk password is set.
Type the password and press
Enter.

The DOS full screen looks
smaller.

Start the ThinkPad
Configuration program and set
the Screen expansion
function.

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Symptom-to-FRU index

LCD-related symptoms
Important
The TFT LCD for the notebook computer contains
many thin-film transistors (TFTs). A small number of
dots that are missing, discolored, or always lighted
is characteristic of TFT LCD technology, but
excessive pixel problems can cause viewing
concerns. The LCD should be replaced if the
number of missing, discolored, or lighted dots in any
background is:
v XGA: 8 or more bright dots, 8 or more dark dots,
or a total of 9 or more bright and dark dots.
v SXGA+: 11 or more bright dots, 13 or more dark
dots, or a total of 16 or more bright and dark
dots.
Note: A bright dot means a pixel is always on
(white or color.) A dark dot means a pixel is
always off (black color.)
Symptom or error

FRU or action, in sequence

No beep, power-on indicator
on, and a blank LCD during
POST.

System board.

v LCD backlight not working.
v LCD too dark.
v LCD brightness cannot be
adjusted.
v LCD contrast cannot be
adjusted.

1. Reseat the LCD
connectors.
2. LCD assembly.
3. System board.

v
v
v
v

LCD screen unreadable.
Characters missing pixels.
Screen abnormal.
Wrong color displayed.

Horizontal or vertical lines
displayed on LCD.

1. See important note for
“LCD-related symptoms.”
2. Reseat all LCD connectors.
3. LCD assembly.
4. System board.
LCD assembly.

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Symptom-to-FRU index

Intermittent problems
Intermittent system hang problems can be due to a variety
of causes that have nothing to do with a hardware defect,
such as cosmic radiation, electrostatic discharge, or
software errors. FRU replacement should be considered
only when a problem recurs.
When analyzing an intermittent problem, do the following:
1. Run the diagnostic test for the system board in loop
mode at least 10 times.
2. If no error is detected, do not replace any FRUs.
3. If any error is detected, replace the FRU shown by the
FRU code. Rerun the test to verify that no more errors
exist.

Undetermined problems
If the diagnostic tests did not identify the adapter or device
that has failed, if wrong devices are installed, or if the
system simply is not operating, follow these procedures to
isolate the failing FRU (do not isolate FRUs that have no
defects).
Verify that all attached devices are supported by the
computer.
Verify that the power supply being used at the time of the
failure is operating correctly. (See “Power system
checkout” on page 38.)
1. Turn off the computer.
2. Visually check each FRU for damage. Replace any
damaged FRU.
3. Remove or disconnect all of the following devices:
a. Non-ThinkPad devices
b. Devices attached to the port replicator
c. Printer, mouse, and other external devices
d. Battery pack
e. Hard disk drive
f. External diskette drive
g. DIMM
h. CD-ROM and diskette drive in the Ultrabay
i. PC Cards
4. Turn on the computer.
5. Determine whether the problem has been solved.
6. If the problem does not recur, reconnect the removed
devices one at a time until you find the failing FRU.
7. If the problem remains, replace the following FRUs one
at a time (do not replace a nondefective FRU):
a. System board
b. LCD assembly

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FRU replacement notices

FRU replacement notices
This section contains notices related to removing and
replacing parts. Read this section carefully before replacing
any FRU.

Screw notices
Loose screws can cause a reliability problem. In the
ThinkPad computer, this problem is addressed with special
nylon-coated screws that have the following characteristics:
v They maintain tight connections.
v They do not easily come loose, even with shock or
vibration.
v They are harder to tighten.
v Each one should be used only once.
Do the following when you service this machine:
v Keep the screw kit (for the P/N, see “Miscellaneous
parts” on page 153) in your tool bag.
v Always use new screws.
v Use a torque screwdriver if you have one.
Tighten screws as follows:
v Plastic to plastic
Turn an additional 90 degrees after the screw head
touches the surface of the plastic part:

90 degrees more

(Cross-section)
v Logic card to plastic
Turn an additional 180 degrees after the screw head
touches the surface of the logic card:

180 degrees more

(Cross-section)
v Torque driver
If you have a torque driver, refer to the “Torque” column
for each step.
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FRU replacement notices

v Make sure that you use the correct screw. If you have a
torque screwdriver, tighten all screws firmly to the torque
shown in the table. Never use a screw that you
removed. Use a new one. Make sure that all of the
screws are tightened firmly.

Retaining serial numbers
This section includes the following descriptions:
v “Restoring the serial number of the system unit”
v “Retaining the UUID” on page 63
v “Reading or writing the ECA information” on page 63

Restoring the serial number of the system
unit
When the computer was manufactured, the EEPROM on
the system board was loaded with the serial numbers of
the system and all major components. These numbers
need to remain the same throughout the life of the
computer.
If you replace the system board, you must restore the
serial number of the system unit to its original value.
Before replacing the system board, save the original serial
number by doing the following:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.69 or later, and restart the computer.
2. From the main menu, select 1. Set System
Identification.
3. Select 2. Read S/N data from EEPROM.
The serial number of each device in your computer is
displayed; the serial number of the system unit is listed as
follows:
v 20: Serial number
Write down that number.
Note: The serial number of the system unit is also written
on the label attached to the bottom of the computer.
After you have replaced the system board, restore the
serial number by doing the following:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.69 or later and restart the computer.
2. From the main menu, select 1. Set System
Identification.
3. Select 1. Add S/N data from EEPROM.
Follow the instructions on the screen.

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Retaining the UUID
The Universally Unique Identifier (UUID) is a 128-bit
number uniquely assigned to your computer at production
and stored in the EEPROM of your system board. The
algorithm that generates the number is designed to provide
unique IDs until the year A.D. 3400. No two computers in
the world have the same number.
When you replace the system board, you must set the
UUID on the new system board as follows:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.69 or later, and restart the computer.
2. From the main menu, select 4. Assign UUID.
A new UUID is created and written. If a valid UUID
already exists, it is not overwritten.

Reading or writing the ECA information
Information on Engineering Change Announcements (ECA)
are stored in the EEPROM of the system board. The
electronic storage of this information simplifies the
procedure to check if the ECA has been previously applied
to a machine. The machine does not need to be
disassembled to check for the ECA application.
To check what ECAs have been previously applied to the
machine, use the ECA Information Read/Write function on
the ThinkPad Hardware Maintenance Diskette Version 1.69
or later.
1. Insert the ThinkPad Hardware Maintenance Diskette
Version 1.69 or later, and restart the computer.
2. From the main menu, select 6. Set ECA Information.
3. To read ECA information, select 2. Read ECA/rework
number from EEPROM and follow the instruction.
4. To read box build date, select 5. Read box build date
from EEPROM, and follow the instruction on the
screen.
After an ECA has been applied to the machine, the
EEPROM must be updated to reflect the ECA's
application. Use the ThinkPad Hardware Maintenance
Diskette Version 1.69 or later to update the EEPROM.
Note: Only the ECA number is stored in the EEPROM.
The machine type of the ECA is assumed be the
same as the machine type of the machine that had
the ECA applied to it.
1. Insert the ThinkPad Hardware Maintenance Diskette
Version 1.69 or later, and restart the computer.
2. From the main menu, select 6. Set ECA Information.

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FRU replacement notices

3. To write ECA information, select 1. Write ECA/rework
number from EEPROM, and follow the instruction.
4. To write box build date, select 4. Write box build date
from EEPROM, and follow the instruction on the
screen.
If the system board is being replaced, try to read the ECA
information from the old system board and transfer the
information to the new system. If the system board is
inoperable, this will not be possible.

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Removing and replacing a FRU

Removing and replacing a FRU
This section presents directions and drawings for use in
removing and replacing a FRU. Be sure to observe the
following general rules:
1. Do not try to service any computer unless you have
been trained and certified. An untrained person runs
the risk of damaging parts.
2. Before replacing any FRU, review “FRU replacement
notices” on page 61.
3. Begin by removing any FRUs that have to be removed
before the failing FRU. Any such FRUs are listed at the
top of the page. Remove them in the order in which
they are listed.
4. Follow the correct sequence in the steps for removing
the FRU, as given in the drawings by the numbers in
square callouts.
5. When turning a screw to replace a FRU, turn it in the
direction as given by the arrow in the drawing.
6. When removing the FRU, move it in the direction as
given by the arrow in the drawing.
7. To put the new FRU in place, reverse the removal
procedure and follow any notes that pertain to
replacement. For information about connecting and
arranging internal cables, see “Locations” on page 112.
8. When replacing a FRU, use the correct screw as
shown in the procedures.

DANGER

Before removing any FRU, turn off the computer,
unplug all power cords from electrical outlets,
remove the battery pack, and then disconnect any
interconnecting cables.

Attention: After replacing a FRU, do not turn on the
computer until you have made sure that all screws,
springs, and other small parts are in place and none are
loose inside the computer. Verify this by shaking the
computer gently and listening for rattling sounds. Metallic
parts or metal flakes can cause electrical short circuits.
Attention: The system board is sensitive to, and can be
damaged by, electrostatic discharge. Before touching it,
establish personal grounding by touching a ground point
with one hand or by using an electrostatic discharge (ESD)
strap (P/N 6405959).
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Removing and replacing a FRU

1010 Battery pack
DANGER
Use only the battery in the parts listing for the model you are
servicing. Use of an incorrect battery can result in ignition or
explosion of the battery.

66

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1020 Hard disk drive
Attention
v Do not drop or apply any shock to the hard
disk drive. The hard disk drive is sensitive to
physical shock. Improper handling can cause
damage and permanent loss of data.
v Before removing the drive, have the user make a
backup copy of all the information on the drive if
possible.
v Never remove the drive while the system is
operating or is in suspend mode.
For access, remove this FRU:
v “1010 Battery pack” on page 66

1

Note: The hard disk drive is attached to the cover.
Step

Screw (quantity)


1

HDD M3 × 4 mm, Black (1)

Note: Use a 2.5-mm Allen wrench to remove the security screw.

(continued)

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67

Removing and replacing a FRU

3

4

When installing: Make sure that the hard disk connector
is firmly attached.

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Removing and replacing a FRU

1030 DIMM door
For access, remove this FRU:
v “1010 Battery pack” on page 66
Note: Loosen the screws 
1, but do not remove them.

Step

Screw (quantity)

Torque


1

M2.5 captive screw (2)

Nm 0.3 Nm
( 3.2 kgfcm)

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Removing and replacing a FRU

1040 DIMM
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69

When installing: With the notched end of the DIMM
toward the socket, insert the DIMM into
the socket, and then press it firmly. Pivot
the DIMM until it snaps into place. Make
sure that the card is firmly fixed in the
slot and does not move easily.

70

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Removing and replacing a FRU

1050 Modem daughter card (MDC)
For access, remove this FRU:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69

Step

Screw (quantity)

Torque


1

M2.5 x 5 mm, Silver (2)

Nm 0.3
(3.2 kgfcm)

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Removing and replacing a FRU

1060 Backup battery
DANGER
Use only the battery in the parts listing for the computer you
are servicing. Use of an incorrect battery can result in
ignition or explosion of the battery.

For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69

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Removing and replacing a FRU

1070 Keyboard
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66

1

Step

Screw (quantity)

Torque


1

M2.5 × 7 mm, Black (2)

Nm 0.3
(3.2 kgfcm)

(continued)

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73

Removing and replacing a FRU

4

3

2

In step 
2, push the keyboard from the bottom, while at
the same time pushing a little in the direction of the arrow
in step 
3. Take care not to bend the keyboard when
lifting it at step 
4.

5

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Removing and replacing a FRU

1080 Middle cover
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73

Step

Screw (quantity)

Torque


1

M2.5 × 8 mm, Black (1)

Nm 0.3
(3.2 kgfcm)

Note: The bottom-side screw that secures the middle
cover may be a security or tamper-proof screw for
802.11a/b wireless models.

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Removing and replacing a FRU

1090 Hinge cover
For access, remove this FRU:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75

When installing: Align the hinge cover squarely and push
down.

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Removing and replacing a FRU

1095 FDD assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73

Step

Screw (quantity)

Torque


1

M2.5 × 5 mm, Silver (1)

0.3 Nm
(3.2 kgfcm)

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Removing and replacing a FRU

1100 Blank bezel FDD assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73

1

2

2

Step

Screw (quantity)

Torque


1

M2.0 × 4 mm, Silver (2)

0.3 Nm
(3.2 kgfcm)

2

When Installing: Be sure the corners of the FDD cover
go under the clasps on the FDD
bracket.

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Removing and replacing a FRU

1110 VGA heatsink assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73

2

11

Step

Screw (quantity)

Torque


1

M2.0 × 4 mm, Silver (3)

0.3 Nm
(3.2 kgfcm)

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Removing and replacing a FRU

1120 VGA card assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73
v “1110 VGA heatsink assembly” on page 79

5
1

4

2
3

Step

Screw (quantity)

Torque


4

M2.0 × 4 mm, Silver (1)

0.3 Nm
(3.2 kgfcm)

80

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Removing and replacing a FRU

1130 CD-ROM/DVD drive and ODD
bracket
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73

1

2

Step

Screw (quantity)

Torque


1

M2.5 stud Phillips × 5 mm, Silver (1)

0.3 Nm
(3.2 kgfcm)

3
3

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Removing and replacing a FRU

1140 Mini PCI adapter
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75

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Removing and replacing a FRU

1150 PC card slot assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1130 CD-ROM/DVD drive and ODD bracket” on page
81
v “1140 Mini PCI adapter” on page 82

Step

Screw (quantity)

Torque


1

M2.5 × 8 mm, Black (2)

0.3 Nm
(3.2 kgfcm)

(continued)

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Removing and replacing a FRU

Loosen the two screws at 
2 about half-way out. Then,
push down firmly on both screws in the direction of the
arrow 
3 to disconnect the PC card slot assembly from
the system board.

Step

Screw (quantity)

Torque


2

M2.5 × 8 mm, Black (2)

0.3 Nm
(3.2 kgfcm)

Push the PC card eject buttons 
4 to pop the buttons out.
While holding the PC card door down, pull on the PC card
eject buttons and carefully remove the PC card slot
assembly 
5.
(continued)

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Removing and replacing a FRU

4

5

When installing: At steps 
2 and 
3, tighten the two
new screws slowly until both screws
have caught the first threads of the
screw holes on the PC card slot
assembly. Then, tighten each screw one
turn at a time, alternating between
screws to evenly pull the assembly
connector onto the system board
connector.

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Removing and replacing a FRU

1160 LCD and Keyboard bezel assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76

1

Step

Screw (quantity)

Torque


1

M2.5 × 7 mm, Black (2)

0.3 Nm
(3.2 kgfcm)

3

(continued)

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ThinkPad G40, G41

2

Removing and replacing a FRU

Non-FDD models: The VGA connector for non-FDD
models is as shown below.

4

5

4

Step

Screw (quantity)

Torque


4

M 2.5 × 7 mm, Black (9)

0.3 Nm
(3.2 kgfcm)


5

M 2.5 × 3 mm, Silver (1)

0.3 Nm
(3.2 kgfcm)

6

(continued)

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Removing and replacing a FRU

When installing: Make sure the red band 
A on the LCD
cable is aligned with the corner of the
keyboard bezel under the hinge.

A

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Removing and replacing a FRU

1170 LCD assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76

1

Step

Screw (quantity)

Torque


1

M2.5 × 7 mm, Black (2)

0.3 Nm
(3.2 kgfcm)

3

2

(continued)

ThinkPad G40, G41

89

Removing and replacing a FRU

Non-FDD models: The VGA connector for non-FDD
models is as shown below.

5

4

4

Step

Screw (quantity)

Torque


4

M 2.5 × 7 mm, Silver (4)

0.3 Nm
(3.2 kgfcm)

(continued)

90

ThinkPad G40, G41

Removing and replacing a FRU

When installing: Make sure the red band 
A on the LCD
cable is aligned with the corner of the
keyboard bezel under the hinge.

A

ThinkPad G40, G41

91

Removing and replacing a FRU

1180 Keyboard bezel
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1170 LCD assembly” on page 89

1

2

1

Step

Screw (quantity)

Torque


1

M 2.5 × 7 mm, Black (9)

0.3 Nm
(3.2 kgfcm)


2

M 2.5 × 3 mm, Silver (1)

0.3 Nm
(3.2 kgfcm)

(continued)

92

ThinkPad G40, G41

Removing and replacing a FRU

Remove the keyboard bezel in the direction of arrow 
3.

ThinkPad G40, G41

93

Removing and replacing a FRU

1190 Fan assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1160 LCD and Keyboard bezel assembly” on page 86
To prevent the CPU from being pulled from the socket
when the fan is removed, remove the screw 
2and
reinsert it 
3. Then carefully turn the screw to separate
the fan as you lift up 
4.

3

1

2

4

5
6

Step

Screw (quantity)

Torque


1

M2.5 captive × (4)

0.3 Nm
(3.2 kgfcm)

(continued)

94

ThinkPad G40, G41

Removing and replacing a FRU

When installing: Apply 1 gram (approx.) of thermal
grease to the underside of the fan
assembly, spreading it evenly with the
provided spatula. Do not apply thermal
grease directly to the CPU. Then, when
the fan is in place, tighten the screws in
this order: 
A; 
B; and 
C.

Caution: When installing, be sure the screw that was
moved from position 
2 to 
3 above, is
returned to its original location.

ThinkPad G40, G41

95

Removing and replacing a FRU

2000 Fan (CPU 3 GHz) and CPU fixture
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1160 LCD and Keyboard bezel assembly” on page 86
To prevent the CPU from being pulled from the socket
when the fan is removed, remove the screw 
2and
reinsert it 
3. Then carefully turn the screw to separate
the fan as you lift up 
4.

Step

Screw (quantity)

Torque


1

M2.5 captive × (4)

0.3 Nm
(3.2 kgfcm)

(continued)

96

ThinkPad G40, G41

Removing and replacing a FRU

When installing: Apply 1 gram (approx.) of thermal
grease to the underside of the fan
assembly, spreading it evenly with the
provided spatula. Do not apply thermal
grease directly to the CPU. Then, when
the fan is in place, tighten the screws in
this order: 
A; 
B; and 
C.

Caution: When installing, be sure the screw that was
moved from position 
2 to 
3 above, is
returned to its original location.

ThinkPad G40, G41

97

Removing and replacing a FRU

2010 CPU
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1160 LCD and Keyboard bezel assembly” on page 86
v “1190 Fan assembly” on page 94
v “2000 Fan (CPU 3 GHz) and CPU fixture” on page 96
Rotate the head of the screw in the direction of the arrow

1 to release the lock; then remove the CPU 
2.

When installing: Place the CPU on the CPU socket with
the pin 1 corner as shown 
1, and then
rotate the head of the screw in the
direction of the arrow 
2 to secure the
CPU.

98

ThinkPad G40, G41

Removing and replacing a FRU

2020 CD-ROM/DVD drive bracket
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1160 LCD and Keyboard bezel assembly” on page 86

1

2

Step

Screw (quantity)

Torque


1

M2.5 × 5 mm, Silver (3)

0.3 Nm
(3.2 kgfcm)

ThinkPad G40, G41

99

Removing and replacing a FRU

2030 FDD bracket
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1160 LCD and Keyboard bezel assembly” on page 86
v “1095 FDD assembly” on page 77

1

2
3

Step

Screw (quantity)

Torque


1

M2.5 × 5 mm, Silver (3)

0.3 Nm
(3.2 kgfcm)


2

M2.5 × 3 mm, Silver (1)

0.3 Nm
(3.2 kgfcm)

100

ThinkPad G40, G41

Removing and replacing a FRU

2040 System board
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1130 CD-ROM/DVD drive and ODD bracket” on page
81
v “1140 Mini PCI adapter” on page 82
v “1160 LCD and Keyboard bezel assembly” on page 86
v “1190 Fan assembly” on page 94
v “2010 CPU” on page 98
v “2000 Fan (CPU 3 GHz) and CPU fixture” on page 96
v “2020 CD-ROM/DVD drive bracket” on page 99
v “1095 FDD assembly” on page 77
v “2030 FDD bracket” on page 100

1

Step

Screw (quantity)

Torque


1

M2.5 × 5 mm, Silver (2)

0.3 Nm
(3.2 kgfcm)

2
3

ThinkPad G40, G41

101

Removing and replacing a FRU

2050 Lower case assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1130 CD-ROM/DVD drive and ODD bracket” on page
81
v “1140 Mini PCI adapter” on page 82
v “1160 LCD and Keyboard bezel assembly” on page 86
v “2020 CD-ROM/DVD drive bracket” on page 99
v “1095 FDD assembly” on page 77
v “2030 FDD bracket” on page 100
v “2040 System board” on page 101

102

ThinkPad G40, G41

Removing and replacing a FRU

2060 Modem cable
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1140 Mini PCI adapter” on page 82
v “1130 CD-ROM/DVD drive and ODD bracket” on page
81
v “1140 Mini PCI adapter” on page 82
v “1170 LCD assembly” on page 89
v “1180 Keyboard bezel” on page 92
v “2020 CD-ROM/DVD drive bracket” on page 99
v “1095 FDD assembly” on page 77
v “2030 FDD bracket” on page 100
v “2040 System board” on page 101

ThinkPad G40, G41

103

Removing and replacing a FRU

2070 PC card slot assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1140 Mini PCI adapter” on page 82
v “1130 CD-ROM/DVD drive and ODD bracket” on page
81
v “1140 Mini PCI adapter” on page 82
v “1160 LCD and Keyboard bezel assembly” on page 86
v “2020 CD-ROM/DVD drive bracket” on page 99
v “1095 FDD assembly” on page 77
v “2030 FDD bracket” on page 100
v “2040 System board” on page 101

Step

Screw (quantity)

Torque


1

M2.5 × 8 mm, Silver (4)

0.3 Nm
(3.2 kgfcm)

104

ThinkPad G40, G41

Removing and replacing a FRU

2080 LCD front bezel
For access, remove this FRU:
v “1010 Battery pack” on page 66
After removing screws 
1, detach all of the latches 
2 to

4 in order.

Step

Screw (quantity)

Torque


1

M2.5 × 5 mm, Black (2)

0.3 Nm
(3.2 kgfcm)

When installing: Make sure that all of the latches of the
LCD front bezel are firmly attached to
the LCD cover.

ThinkPad G40, G41

105

Removing and replacing a FRU

2090 Inverter card
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “2080 LCD front bezel” on page 105

1

1
4

3

53
2

Step

Screw (quantity)

Torque


1

M2.5 × 5 mm, Silver (2)

0.3 Nm
(3.2 kgfcm)

When installing: Make sure that connectors 
3, 
4 and

5 are firmly attached. Some models
have an extra connector; make sure
connector 
3 is connected to the
socket on the left.

106

ThinkPad G40, G41

Removing and replacing a FRU

3000 Speaker assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “2080 LCD front bezel” on page 105
v “2090 Inverter card” on page 106

1
2

Step

Screw (quantity)

Torque


1

M2.5 × 5 mm, Silver (1)

0.3 Nm
(3.2 kgfcm)

When installing: Make sure the LCD cable is not pinched
and aligned to the left of the speaker.

ThinkPad G40, G41

107

Removing and replacing a FRU

3010 LCD cable assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1170 LCD assembly” on page 89
v “2080 LCD front bezel” on page 105
v “2090 Inverter card” on page 106

1

1

Step

Screw (quantity)

Torque


1

M2.5 × 5 mm, Silver (6)

0.3 Nm
(3.2 kgfcm)

(continued)

108

ThinkPad G40, G41

Removing and replacing a FRU

3

3
4

2

When installing: Make sure the LCD cable is not pinched
and aligned to the left of the speaker.

ThinkPad G40, G41

109

Removing and replacing a FRU

3020 Wireless antenna and rear cover
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1030 DIMM door” on page 69
v “1070 Keyboard” on page 73
v “1080 Middle cover” on page 75
v “1090 Hinge cover” on page 76
v “1170 LCD assembly” on page 89
v “2080 LCD front bezel” on page 105
v “2090 Inverter card” on page 106
v “3010 LCD cable assembly” on page 108

2

1

4

3

Step

Screw (quantity)

Torque


2

M2.0 × 3.5 mm, Black (2)

0.3 Nm
(3.2 kgfcm)

110

ThinkPad G40, G41

Removing and replacing a FRU

3030 LCD panel and hinge assembly
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 66
v “1070 Keyboard” on page 73
v “1090 Hinge cover” on page 76
v “1170 LCD assembly” on page 89
v “2080 LCD front bezel” on page 105
v “2090 Inverter card” on page 106
v “3010 LCD cable assembly” on page 108

Step

Screw (quantity)

Torque


1

M2.0 × 4 mm, Silver (4)

0.25 Nm
(2.5 kgfcm)

ThinkPad G40, G41

111

Locations

Locations
Front view

1

2

3

4

5

6

7

8

9

10

11

12

112

System status indicators
Power status indicators
Power switch
PC card slots
PC card eject button
CD/DVD drive eject button
CD/DVD drive
TrackPoint stick
TrackPoint buttons
Access IBM button
Volume control buttons
Monaural speaker

ThinkPad G40, G41

Locations

Rear view

1

2

3

4

5

6

7

8

9

AC power connector
Modem connector
Ethernet connector
Universal serial bus (USB) connectors
PS/2 connector
Parallel connector
External-monitor connector
Security keyhole
Power status indicators

ThinkPad G40, G41

113

Locations

Bottom view

1

2

3

4

5

6

7

8

9

10

114

LCD latch
Battery pack
Battery pack latch
DIMM slots
USB connectors
Floppy disk drive
Floppy disk drive eject button
Stereo headphone jack
Microphone jack
Hard disk drive

ThinkPad G40, G41

Parts list

Parts list
G40, G41 series
The G40, G41 series includes several models. The
following table summarizes the characteristics of each
model, to help you determine which FRU in the parts list
meets your need.
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT Cel 2.2G/memory, 128 MB/HDD, 20 GB
2387 79x

14.1 in,
XGA

CD-ROM

Open

NiMH, 8 cell

CPU, P4 DT Cel 2.2G/memory, 128 MB/HDD, 30 GB
2388 7Ax
2388 7Bx

14.1 in,
XGA

CD-ROM

802.11b

Lithium, 6 cell

2388 7Cx
2388 7Fx

NiMH, 8 cell

CPU, P4 DT Cel 2.2G/memory, 256 MB/HDD, 30 GB
2388 7Dx
2388 7Gx

14.1 in,
XGA

CD-ROM

2388 7Jx

Open

Lithium, 6 cell

802.11b

NiMH, 8 cell

Open

2388 7Zx
2388 7Lx

DVD

Lithium, 6 cell

2388 7Hx
2388 7Mx

Lithium, 12 cell

2388 7Nx

Combo

2388 7Kx

NiMH, 8 cell

2388 7Yx
CPU, P4 DT Cel 2.2G/memory, 256 MB/HDD, 40 GB
2388 7Px
2388 7Qx

14.1 in,
XGA

Combo

802.11b

Lithium, 12 cell

Open

CPU, P4 DT Cel 2.2G/memory, 128 MB/HDD, 30 GB
2388 8Cx

15 in,
XGA

CD-ROM

Open

NiMH, 8 cell

(continued)

ThinkPad G40, G41

115

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 2.2G/memory, 256 MB/HDD, 30 GB
2388 8Ax

15 in,
XGA

2388 8Dx

CD-ROM

Open

Lithium Ion, 6
cell

DVD

802.11b

Lithium Ion, 12
cell

2388 8Ex

Open

2388 8Fx
CPU, P4 DT 2.2G/memory, 256 MB/HDD, 40 GB
2388 8Bx
2388 8Gx

15 in,
XGA

2388 8Hx

CD-ROM

802.11b

DVD

Open

Combo

802.11b

2388 8Jx

Open

Lithium Ion, 6
cell

Lithium Ion, 12
cell

CPU, P4 DT 2.6G/memory, 128 MB/HDD, 30 GB
2388 9Ax
2388 9Bx

14.1 in,
XGA

CD-ROM

802.11b
Open

Lithium Ion, 6
cell

2388 9Cx
CPU, P4 DT 2.6G/memory, 256 MB/HDD, 30 GB
2388 9Gx
2388 9Dx

14.1 in,
XGA

DVD

Open

2388 9Hx

Lithium Ion, 6
cell
Lithium Ion, 12
cell

2388 9Ex

Combo

Lithium Ion, 6
cell

2388 9Jx

Lithium Ion, 12
cell

CPU, P4 DT 2.6G/memory, 256 MB/HDD, 40 GB
2388 9Mx

Open

Lithium Ion, 6
cell

2388 9Rx

802.11b

2388 9Sx

Open

Lithium Ion, 12
cell

2388 9Qx

14.1 in,
XGA

DVD
Combo

(continued)

116

ThinkPad G40, G41

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 2.6G/memory, 128 MB/HDD, 30 GB
2388 AAx
2388 ABx

15 in,
XGA

CD-ROM

802.11b
Open

2388 AEx

Lithium Ion, 6
cell
NiMH, 8 cell

CPU, P4 DT 2.6G/memory, 256 MB/HDD, 30 GB
2388 ACx
2388 ADx

15 in,
XGA

CD-ROM

802.11b

NiMH, 8 cell

Open

2388 AYx
2388 AKx

DVD

Lithium Ion, 6
cell

2388 AFx

802.11b

2388 AGx

Open

2388 AMx

Lithium Ion, 12
cell

Combo

2388 ANx
2388 APx

NiMH, 8 cell

2388 AZx
2388 B1x

15 in,
SXGA+

Lithium Ion, 12
cell

CPU, P4 DT 2.6G/memory, 128 MB/HDD, 40 GB
2388 AHx
2388 AJx

15 in,
XGA

CD-ROM

802.11b
Open

Lithium Ion, 6
cell

CPU, P4 DT 2.6G/memory, 256 MB/HDD, 40 GB
2388 ALx
2388 AQx

15 in,
XGA

DVD

Open

2388 AUx
2388 ARx

Lithium Ion, 6
cell
Lithium Ion, 12
cell

Combo

Lithium Ion, 6
cell

2388 ASx
2388 ATx

802.11
a/b

2388 AVx

Open

2388 B2x

802.11b

Lithium Ion, 12
cell

(continued)

ThinkPad G40, G41

117

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 2.6G/memory, 256 MB/HDD, 40 GB
2388
B1x-B3x

15 in,
SXGA+

Combo

Open

Lithium Ion, 12
cell

CPU, P4 DT 2.6G/memory, 256 MB/HDD, 60 GB
2388 AWx

15 in,
XGA

Combo

802.11
a/b

Lithium Ion, 12
cell

CPU, P4 DT 2.8G/memory, 256 MB/HDD, 40 GB
2388 C1x
2388 C2x

15 in,
XGA

Combo

Open

Lithium Ion, 12
cell

CPU, P4 DT 3.0G/memory, 256 MB/HDD, 30 GB
2388 BAx

14.1 in,
XGA

DVD

Open

Lithium Ion, 12
cell

CPU, P4 DT 3.0G/memory, 256 MB/HDD, 40 GB
2388 BAx
- BBx

15 in,
XGA

Combo

2388 BCx
2388 BDx
- BLx

802.11b

Lithium Ion, 12
cell

Open
15 in,
SXGA+

CPU, P4 DT 3.0G/memory, 256 MB/HDD, 60 GB
2388 BDx
2388 BEx

15 in,
SXGA+

Combo

2388 BFx

802.11
a/b

Lithium Ion, 12
cell

Open

2388 BMx
CPU, P4 DT 3.0G/memory, 512 MB/HDD, 60 GB
2388 BNx

15 in,
SXGA+

Combo

802.11
a/b

Lithium Ion, 12
cell

CPU, P4 DT Cel 2.2G/memory, 256 MB/HDD, 30 GB
2389 7Ex

14.1 in,
XGA

CD-ROM

2389 7Jx
2389 7Zx
2389 7Kx

Combo

2389 7Yx

(continued)

118

ThinkPad G40, G41

802.11
a/b

Lithium Ion, 12
cell

Open

NiMH, 8 cell

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 2.6G/memory, 256 MB/HDD, 30 GB
2389 9Fx

14.1 in,
XGA

2389 ACx

15 in,
XGA

2389 ADx

CD-ROM

802.11
a/b

Lithium Ion, 12
cell
NiMH, 8 cell

Open

2389 AYx
2389 APx

Combo

2389 AZx
CPU, P4 DT 2.6G/memory, 256 MB/HDD, 40 GB
2389 AWx
- ATx

15 in,
XGA

Combo

802.11
a/b

2388 99x

14.1,
XGA

Combo

Open

2388 A8x

15 in,
XGA

2388 A9x

Lithium Ion, 12
cell

CPU, P4 DT 2.2G/memory, 256 MB/HDD, 30 GB
2388 88x
2388 89x

15 in,
XGA

DVD

Open

Lithium Ion, 12
cell

CPU, P4 DT 2.2G/memory, 256 MB/HDD, 30 GB
2388 A7x

15 in,
XGA

DVD

Open

Lithium Ion, 12
cell

CPU, P4 DT 3.0G/memory, 256 MB/HDD, 40 GB
2388 B8x

15 in,
XGA

Combo

2388 B9x

802.11
a/b

Lithium Ion, 12
cell

Open

CPU, P4 DT 2.2G/memory, open/HDD, open
2388 CAx
2388 CBx

14.1 in,
XGA

Open

802.11
a/b

Open

Open

(continued)

ThinkPad G40, G41

119

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 2.6G/memory, open/HDD, open
2388 CJx

14.1 in,
XGA

Open

2388 CKx
2388 CCx

802.11
a/b

Open

Open
15 in,
XGA

802.11
a/b

2388 CDx

Open

CPU, P4 DT Cel 2.2G/memory, open/HDD, 30 GB
2389 CEx
2389 CFx

14.1 in,
XGA

Open

802.11b

NiMH, 8 cell

Open

CPU, P4 DT 2.6G/memory, open/HDD, 30 GB
2389 CGx
2389 CHx

15 in,
XGA

Open

802.11b

NiMH, 8 cell

Open

CPU P4 DT Cel 2.4G/memory 128 MB/HDD 20 GB
2388 DA+

14.1 in,
XGA

CD-ROM

Open

2388 DB+

Lithium Ion, 6
cell
NiMH, 8 cell

CPU P4 DT Cel 2.4G/memory 256 MB/HDD 20 GB
2388 DC+

14.1 in,
XGA

CD-ROM

Open

NiMH, 8 cell

CPU P4 DT Cel 2.4G/memory 128 MB/HDD 30 GB
2388 DD+
2388 DE+

14.1 in,
XGA

CD-ROM

Open
802.11b

Lithium Ion, 6
cell

CPU P4 DT Cel 2.4G/memory 256 MB/HDD 30 GB
2388 DF+

14.1 in,
XGA

CD-ROM

2388 DG+

Open

Lithium Ion, 6
cell
Lithium Ion, 12
cell

2388 DJ+

NiMH, 8 cell

2388 DK+

DVD

Lithium Ion, 6
cell

2388 DM+

Combo

Lithium Ion, 12
cell

2388 DN+

(continued)

120

ThinkPad G40, G41

NiMH, 8 cell

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT Cel 2.4G/memory, 256 MB/HDD, 40 GB
2388 DP+
2388 DQ+

14.1 in,
XGA

CD-ROM

2388 DR+

Open

Lithium Ion, 6
cell

802.11b

NiMH, 8 cell

CPU, P4 DT Cel 2.4G/memory, 256 MB/HDD, 30 GB
2388 DS+
2388 DT+

15 in,
XGA

DVD

2388 DU+

Open

Lithium Ion, 12
cell

802.11b

2388 DV+

Combo

Open

CPU, P4 DT Cel 2.4G/memory, 256 MB/HDD, 40 GB
2388
DW+

15 in,
XGA

Combo

2388 DX+

Open

Lithium Ion, 12
cell

802.11b

CPU, P4 DT 2.6G/memory, 256 MB/HDD, 30 GB
2388 EA+

14.1 in,
XGA

DVD

Open

Lithium Ion, 6
cell

CPU, P4 DT 2.8G/memory, 256 MB/HDD, 30 GB
2388 EB+

14.1 in,
XGA

CD-ROM

2388 ED+

15 in,
XGA

Combo

Open

Lithium Ion, 6
cell
NiMH, 8 cell

CPU, P4 DT 2.8G/memory, 256 MB/HDD, 40 GB
2388 EE+

15 in,
XGA

2388 EF+

DVD

Open

Combo

Lithium Ion, 12
cell
Lithium Ion, 6
cell

2388 EG+
CPU, P4 DT 2.8G/memory, 256 MB/HDD, 60 GB
2388 EJ+

15 in,
XGA

2388 EK+

15 in,
SXGA+

Combo

802.11
a/b

Lithium Ion, 12
cell

CPU, P4 DT 3.0G/memory, 256 MB/HDD, 40 GB
2388 EL+
2388 EM+
2388 EN+

15 in,
XGA

DVD

Open

Combo

802.11b

Lithium Ion, 12
cell

802.11
a/b

(continued)

ThinkPad G40, G41

121

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 3.0G/memory, 256 MB/HDD, 60 GB
2388 EP+

15 in,
XGA

Combo

Open

Lithium Ion, 12
cell

CPU, P4 DT 3.0G/memory, 512 MB/HDD, 60 GB
2388 EQ+

15 in,
S+XGA

Combo

802.11b

Lithium Ion, 12
cell

CPU, P4 DT Cel 2.4G/memory, 256 MB/HDD, 30 GB
2389 DJ+
2389 DN+

14.1 in,
XGA

CD-ROM

Open

NiMH, 8 cell

Combo

CPU, P4 DT 3.0G/memory, 256 MB/HDD, 40 GB
2389 EM+ 15 in,
XGA

Combo

802.11b

Lithium Ion, 12
cell

CPU, P4 DT 3.0G/memory, 512 MB/HDD, 60 GB
2389 EQ+

15 in,
S+XGA

Combo

802.11b

Lithium Ion, 12
cell

CPU, P4 DT Cel 2.4G/memory, 256 MB/HDD, 30 GB
2389 DH+

14.1 in,
XGA

2384 DL+

CD-ROM

802.11
a/b

DVD

Open

Lithium Ion, 12
cell

CPU, P4 DT Cel 2.4G/memory, 256 MB/HDD, 40 GB
2384
DW+

15 in,
XGA

Combo

Open

Lithium Ion, 12
cell

CPU, P4 DT 2.8G/memory, 256 MB/HDD, 30 GB
2384 EC+

14.1 in,
XGA

2384 EH+

15 in,
XGA

Combo

Open

Lithium Ion, 12
cell

Open

Open

Open

CPU, P4 DT Cel 2.4G
2388 FA+
2388 FB+

14.1 in,
XGA

802.11b

2388 FC+

Open

2388 FD+

802.11
a/b

2388 FE+
2388 FF+
2389 FA+
2389 FB+

15 in,
XGA

Open

14.1 in,
XGA

Open

(continued)

122

ThinkPad G40, G41

802.11
a/b

802.11b

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT Cel 2.5G/memory, 128 MB/HDD, 30 GB
2388 HA+
2388 HB+

14.1 in,
XGA

CD-ROM

802.11b
Open

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.5G/memory, 256 MB/HDD, 30 GB
2388 HC+
2388 HD+

14.1 in,
XGA

CD-ROM

Open

Lithium Ion, 6
cell

802.11b

Lithium Ion, 12
cell

2388 HF+
2388 HG+

DVD

2388 HH+

Combo

2388 HJ+
2388 HK+
2388 HL+

15 in,
XGA

2388 HM+

DVD

Open
Combo

2388 HN+

802.11b
Open

NiMH, 8 cell

CPU, P4 DT Cel 2.5G/memory, 256 MBx2/HDD, 30 GB
2388 HP+

15 in,
XGA

Combo

Open

NiMH, 8 cell

CPU, P4 DT Cel 2.5G/memory, 256 MB/HDD, 40 GB
2388 HQ+ 15 in,
XGA

Combo

Open

Lithium Ion, 12
cell

CPU, P4 DT Cel 2.6G/memory, 128 MB/HDD, 30 GB
2388 JB+

14.1 in,
XGA

DVD

Open

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.6G/memory, 256 MB/HDD, 30 GB
2388 JA+

14.1 in,
XGA

CD-ROM

2388 JD+

14.1 in,
XGA

Combo

2388 JE+

15 in,
XGA

CD-ROM

2388 JF+

DVD

2388 JG+
2388 JH+
2388 JJ+

Open

NiMH, 8 cell

802.11b

NiMH, 12 cell

Open
Combo

802.11b
Open

NiMH, 8 cell

(continued)

ThinkPad G40, G41

123

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT Cel 2.6G/memory, 256 MBx2/HDD, 30 GB
2388 JK+

15 in,
XGA

Combo

Open

NiMH, 8 cell

CPU, P4 DT Cel 2.6G/memory, 256 MB/HDD, 40 GB
2388 JL+
2388 JM+

15 in,
XGA

DVD

Open

Combo

802.11b

2388 JP+

Lithium Ion, 12
cell

Open

2388 JQ+

Lithium Ion, 6
cell

2388 JR+
CPU, P4 DT 2.8G/memory, 256 MB/HDD, 30 GB
2388 KA+

14.1 in,
XGA

2388 KB+
2388 KE+

15 in,
XGA

CD-ROM

Open

Lithium Ion, 6
cell

Combo

Lithium Ion, 12
cell

CD-ROM

Lithium Ion, 6
cell

CPU, P4 DT 2.8G/memory, 256 MB/HDD, 40 GB
2388 KC+
2388 KD+
2388 KF+
2388 KG+

14.1 in,
XGA
15 in,
XGA

DVD

Open

Lithium Ion, 6
cell

Combo

802.11b

Lithium Ion, 6
cell

2388 KJ+

Open

CPU, P4 DT 2.8G/memory, 512 MB/HDD, 60 GB
2388 KN+

14.1 in,
XGA

2388 KR+

15 in,
XGA

Combo

(continued)

124

ThinkPad G40, G41

Open

Lithium Ion, 12
cell

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT Cel 2.5G/memory, 256 MB/HDD, 30 GB
2389 HJ+

14.1 in,
XGA

2389 HN+

15 in,
XGA

2389 HE+

14.1 in,
XGA

Combo

Open

NiMH, 8 cell

CD-ROM

802.11
a/b

Lithium Ion, 12
cell

CPU, P4 DT Cel 2.6G/memory, 256 MB/HDD, 30 GB
2389 JA+

14.1 in,
XGA

2389 JE+

15 in,
XGA

2389 JJ+
2389 JC+

CD-ROM

Open

NiMH, 8 cell

Combo

14.1 in,
XGA

Lithium Ion, 12
cell

CPU, P4 DT Cel 2.6G/memory, 256 MB/HDD, 40 GB
2389 JP+

15 in,
XGA

Combo

Open

Lithium Ion, 12
cell

CPU, P4 DT 2.8G/memory, 256 MB/HDD, 30 GB
2389 KE+

15 in,
XGA

CD-ROM

Open

NiMH, 8 cell

CPU, P4 DT 2.8G/memory, 256 MB/HDD, 40 GB
2389 KH+

15 in,
XGA

Combo

802.11
a/b

Lithium Ion, 12
cell

2389 KM+ 15 in,
SXGA
CPU, P4 DT Cel 2.6G/memory, 256 MB/HDD, 40 GB
2384 JN+

15 in,
XGA

Combo

802.11
a/b

Lithium Ion, 12
cell

CPU, P4 DT 3.0G/memory, 256 MB/HDD, 40 GB
2384 KP+

15 in,
XGA

2384 KQ+

15 in,
SXGA

Combo

Open

Lithium Ion, 12
cell

802.11
a/b

CPU, P4 DT Cel 2.5G
2388 LA+

15 in,
XGA

Open

Open

Open

Open

Open

Open

CPU, P4 DT Cel 2.6G
2388 LB+

14.1 in,
XGA

2388 LC+

15 in,
XGA

(continued)

ThinkPad G40, G41

125

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

Open

Open

Open

CPU, P4 DT 2.8G
2388 LD+

15 in,
XGA

CPU, P4 DT Cel 2.4G/memory, 128 MB/HDD, 30 GB
2881 22+
2881 28+

14.1 in,
XGA

CD-ROM

Open

DVD

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.4G/memory, 256 MB/HDD, 30 GB
2881 23+
2881 24+

14.1 in,
XGA

CD-ROM

2881 25+

DVD

2881 26+

Combo

Open

Lithium Ion, 6
cell

2881 27+
2881 29+

DVD

2881 2A+

Combo

2881 2B+

CD-ROM

802.11
b/g

CD-ROM

Open

2881 2E+
2881 2F+

15 in,
XGA

2881 2G+

Lithium Ion, 6
cell

DVD
Combo

2881 2H+

802.11
b/g
Open

Lithium Ion, 12
cell

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.4G/memory, 256 MB/HDD, 40 GB
2881 2D+

15 in,
XGA

Combo

Open

Lithium Ion, 12
cell

CPU, P4 DT Cel 2.4G/memory, 512 MB/HDD, 30 GB
2881 2C+

15 in,
XGA

Combo

(continued)

126

ThinkPad G40, G41

Open

Lithium Ion, 6
cell

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT Cel 2.4G/memory, 256 MB/HDD, 40 GB
2881 2J+
2881 2K+

15 in,
XGA

DVD

Open

CD-ROM

2881 2L+

DVD

2881 2M+

Combo

2881 2N+

CD-ROM

Lithium Ion, 12
cell

CPU, P4 DT Cel 2.4G/memory, 128 MB/HDD, 40 GB
2881 2N+

15 in,
XGA

CD-ROM

Open

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.53G/memory, 128 MB/HDD, 30 GB
2881 32+
2881 38+

14.1 in,
XGA

CD-ROM

Open

DVD

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.53G/memory, 128 MB/HDD, 40 GB
2881 3N+

15 in,
XGA

CD-ROM

Open

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.53G/memory, 256 MB/HDD, 30 GB
2881 33+
2881 34+

14.1 in,
XGA

CD-ROM

2881 35+

DVD

2881 36+

Combo

Open

Lithium Ion, 6
cell

2881 37+
2881 39+
2881 3A+
2881 3B+

CD-ROM

802.11
b/g

CPU, P4 DT Cel 2.53G/memory, 512 MB/HDD, 30 GB
2881 3C+

15 in,
XGA

Combo

Open

Lithium Ion, 6
cell

(continued)

ThinkPad G40, G41

127

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT Cel 2.53/memory, 256 MB/HDD, 40 GB
2881 3D+
2881 3J+

15 in,
XGA

Combo

Open

DVD

2881 3K+

CD-ROM

2881 3L+

DVD

2881 3K+

Combo

Lithium Ion, 12
cell
Lithium Ion, 6
cell

CPU, P4 DT Cel 2.53/memory, 256 MB/HDD, 30 GB
2881 3E+

15 in,
XGA

CD-ROM

Open

2881 3F+

DVD

2881 3G+

CD-ROM

802.11
b/g

2881 3H+

Combo

Open

Lithium Ion, 6
cell
Lithium Ion, 12
cell

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.66G/memory, 256 MB/HDD, 30 GB
2881 43+
2881 44+

14.1 in,
XGA

CD-ROM

2881 45+

DVD

2881 46+

Combo

Open

Lithium Ion, 6
cell

2881 48+
2881 4A+
2881 4D+
2881 4E+

802.11
b/g
15 in,
XGA

CD-ROM
DVD

2881 4F+
2881 4G+

802.11
b/g
Combo

(continued)

128

Open

ThinkPad G40, G41

Open

Lithium Ion, 12
cell

Lithium Ion, 6
cell

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT Cel 2.66G/memory, 128 MB/HDD, 30 GB
2881 42+
2881 47+

14.1 in,
XGA

CD-ROM

Open

DVD

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.66G/memory, 256 MB/HDD, 40 GB
2881 49+

14.1 in,
XGA

2881 4C+

15 in,
XGA

2881 4H+
2881 4K+

Combo

Open

Lithium Ion, 6
cell

DVD
CD-ROM

CPU, P4 DT Cel 2.66G/memory, 512 MB/HDD, 30 GB
2881 4B+
2881 4J+

15 in,
XGA

Combo

Open

Multi-burner

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.66G/memory, 512 MB/HDD, 40 GB
2881 4M+

15 in,
XGA

Combo

802.11
b/g

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.66G/memory, 256 MB/HDD, 80 GB
2881 4L+

15 in,
XGA

Combo

Open

Lithium Ion, 6
cell

CPU, P4 DT 3.06G/memory, 128 MB/HDD, 30 GB
2881 57+

14.1 in,
XGA

CD-ROM

Open

Lithium Ion, 6
cell

CPU, P4 DT 3.06G/memory, 256 MB/HDD, 30 GB
2881 54+
2881 55+

14.1 in,
XGA

2881 58+
2881 5C+
2881 5M+

CD-ROM

Open

Combo

Lithium Ion, 6
cell

DVD
15 in,
XGA

CD-ROM
Combo

Lithium Ion, 12
cell

CPU, P4 DT 3.06G/memory, 512 MB/HDD, 30 GB
2881 5G+

15 in,
XGA

Combo

Open

Lithium Ion, 6
cell

(continued)

ThinkPad G40, G41

129

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 3.06G/memory, 256 MB/HDD, 40 GB
2881 52+
2881 53+

14.1 in,
XGA

2881 56+

DVD

Open

Combo

2881 59+

802.11
b/g

2881 5B+

15 in,
XGA

Open

2881 5A+

15 in,
SXGA+

802.11
b/g

2881 5D+

15 in,
XGA

2881 5E+

Lithium Ion, 6
cell

DVD

Open

Combo

802.11
b/g

2881 5F+

Lithium Ion, 12
cell

Open

2881 5H+

CD-ROM

2881 5J+

DVD

2881 5K+

Combo

2881 5L+

Lithium Ion, 6
cell
802.11
b/g

Lithium Ion, 12
cell

CPU, P4 DT 3.2G/memory, 256 MB/HDD, 30 GB
2881 64+
2881 65+
2881 6A+

14.1 in,
XGA

CD-ROM

15 in,
XGA

CD-ROM

Combo

(continued)

130

ThinkPad G40, G41

Open

Lithium Ion, 6
cell

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 3.2G/memory, 256 MB/HDD, 40 GB
2881 62+
2881 63+

14.1 in,
XGA

2881 66+

DVD

Open

Combo

2881 67+

802.11
b/g

2881 68+

15 in,
SXGA+

2881 69+

15 in,
XGA

2881 6B+

Lithium Ion, 6
cell

Open

2881 6C+

802.11
b/g

2881 6D+

Open

2881 6E+

802.11
b/g

2881 6F+

Multi-burner

Lithium Ion, 12
cell

Open

CPU, P4 DT 3.2G/memory, 512 MB/HDD, 30 GB
2881 6G+

15 in,
XGA

Combo

Open

Lithium Ion, 6
cell

CPU, P4 DT 3.2G/memory, 512 MB/HDD, 30 GB
2881 6H+

15 in,
XGA

DVD

Open

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.4G/memory, 256 MB/HDD, 30 GB
2882 2P+

14.1 in,
XGA

Combo

15 in,
XGA

CD-ROM

2882 2T+

14.1 in,
XGA

CD-ROM

2886 2Ux

15 in,
XGA

Combo

2882 2Q+
2882 2R+
2882 2S+

Open

Lithium Ion, 6
cell

Combo
802.11
b/g

(continued)

ThinkPad G40, G41

131

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT Cel 2.4G/memory, open/HDD, open
2882 2Vx

14.1 in,
XGA

2882 2Wx

15 in,
XGA

2886 2Xx

14.1 in,
XGA

2886 2Yx
2886 2Zx

Open

Open

Open

15 in,
XGA

CPU, P4 DT Cel 2.53G/memory, 256 MB/HDD, 30 GB
2882 2Px

14.1 in,
XGA

CD-ROM

15 in,
XGA

CD-ROM

2882 2Tx

14.1 in,
XGA

CD-ROM

2886 2Ux

15 in,
XGA

Combo

2882 2Qx
2882 2Rx
2882 2Sx

Open

Combo

Lithium Ion, 6
cell

Combo
802.11
b/g

CPU, P4 DT Cel 2.53G/memory, open/HDD, open
2881 3Vx

14.1 in,
XGA

2881 3Wx

15 in,
XGA

2886 3Xx

14.1 in,
XGA

2886 3Yx
2886 3Zx

Open

15 in,
XGA

(continued)

132

ThinkPad G40, G41

Open

Open

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT Cel 2.66G/memory, 256 MB/HDD, 30 GB
2882 4Px
2882 4Qx
2882 4Rx
2882 4Sx
2882 4Tx

14.1 in,
XGA

CD-ROM

15 in,
XGA

CD-ROM

14.1 in,
XGA

CD-ROM

Open

Combo

Lithium Ion, 6
cell

Combo
Lithium Ion, 12
cell

2882 4Ux

Lithium Ion, 6
cell

CPU, P4 DT Cel 2.66G/memory, open/HDD, open
2881 4Vx

14.1 in,
XGA

2881 4Wx

15 in,
XGA

2886 4Xx

14.1 in,
XGA

2886 4Yx

Open

Open

Open

CPU, P4 DT 3.06G/memory, 256 MB/HDD, 30 GB
2881 84x
2881 87x
2882 5Px
2882 5Qx
2882 5Sx

15 in,
XGA

Combo

14.1 in,
XGA

CD-ROM

15 in,
XGA

CD-ROM

Open

Lithium Ion, 12
cell

Combo

(continued)

ThinkPad G40, G41

133

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 3.06G/memory, 256 MB/HDD, 40 GB
2881 85x

802.11
b/g

Lithium Ion, 12
cell

2882 5Rx

Open

Lithium Ion, 6
cell

2882 8Xx

802.11
b/g

Lithium Ion, 12
cell

2881 88x

15 in,
XGA

Combo

2886 5Tx

Lithium Ion, 6
cell

2886 92x

CPU, P4 DT 3.06G/memory, 512 MB/HDD, 40 GB
2881 86x

15 in,
XGA

Combo

802.11
b/g

2881 72x

Multi-burner

Open

2881 82x

Combo

Lithium Ion, 12
cell

2881 83x
CPU, P4 DT 3.06G/memory, open/HDD, open
2881 5Vx

14.1 in,
XGA

2881 5Wx

15 in,
XGA

2886 5Xx

14.1 in,
XGA

2886 5Yx
2886 97x

15 in,
SXGA+

2886 98x

15 in,
XGA

Open

(continued)

134

ThinkPad G40, G41

Open

Open

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 3.2G/memory, 256 MB/HDD, 30 GB
2882 6Px
2882 6Qx
2882 6Sx

14.1 in,
XGA

CD-ROM

15 in,
XGA

CD-ROM

Open

Combo

Lithium Ion, 6
cell

CPU, P4 DT 3.2G/memory, 256 MB/HDD, 40 GB
2881 89x
2881 8Ax

15 in,
SXGA+

2881 8Dx
2881 8Gx
2882 6Rx
2882 8Rx
2882 8Sx
2882 8Yx

Combo

Combo
15 in,
XGA
15 in,
SXGA+
15 in,
XGA

Open

Lithium Ion, 6
cell

802.11
b/g

Lithium Ion, 12
cell

Open

Lithium Ion, 6
cell

802.11
b/g

Lithium Ion, 12
cell

Multi-burner

Multi-burner
Combo

Multi-burner
Combo

CPU, P4 DT 3.2G/memory, 512 MB/HDD, 40 GB
2881 8Bx

15 in,
SXGA+

2881 8Jx

15 in,
XGA

2886 93x

15 in,
SXGA+

Combo

Open

Lithium Ion, 6
cell
Lithium Ion, 12
cell

802.11
b/g

Lithium Ion, 6
cell

(continued)

ThinkPad G40, G41

135

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 3.2G/memory, 512 MB/HDD, 80 GB
2881 8Cx

15 in,
SXGA+

2881 8Ex

15 in,
XGA

2881 8Fx

Combo

Open

Lithium Ion, 12
cell

2881 8Hx

802.11
b/g

2881 73x

15 in,
SXGA+

2882 8Tx

15 in,
XGA

Open

15 in,
SXGA+

802.11
b/g

2882 8Ux
2882 78x

Lithium Ion, 6
cell

Lithium Ion, 6
cell

CPU, P4 DT 3.2G/memory, open/HDD, open
2881 6Vx
2881 6Wx

14.1 in,
XGA

2881 94x

15 in,
SXGA+

2886 6Xx

14.1 in,
XGA

2886 6Xx

15 in,
SXGA+

2886 7Xx

Open

Open

Open

2886 99x
2886 9Ax

15 in,
XGA

CPU, P4 DT 3.46G/memory, 256 MB/HDD, 40 GB
2881 6Jx

14.1 in,
XGA

2881 8Px

15 in,
XGA

Combo

Open
802.11
b/g

2881 8Qx

Open

2882 8Nx

802.11
b/g

(continued)

136

ThinkPad G40, G41

Lithium Ion, 12
cell

Parts list
Model

LCD

Bay device

Mini
PCI

Battery

CPU, P4 DT 3.46G/memory, 256 MB/HDD, 80 GB
2881 8Nx

15 in,
XGA

Combo

Open

Lithium Ion, 12
cell

CPU, P4 DT 3.46G/memory, 512 MB/HDD, 80 GB
2881 74x
2881 75x

15 in,
SXGA+

2881 76x

Multi-burner

802.11
b/g

Lithium Ion, 12
cell

Combo

2881 8Kx
2881 8Lx
2881 8Mx

Multi-burner

2882 77x
2882 8Vx

Combo

2886 79x

Multi-burner

Lithium Ion, 6
cell

CPU, P4 DT 3.46G/memory, open/HDD, open
2881 7Vx

15 in,
SXGA+

2881 7Wx

15 in,
XGA

2881 95x

15 in,
SXGA+

2881 96x

15 in,
XGA

2886 7Yx

15 in,
SXGA+

2886 9Bx
2886 9Cx

Open

Open

Open

15 in,
XGA

(continued)

ThinkPad G40, G41

137

Parts list

v Each FRU is available for all types or models, unless
specific types or models are specified.
v A CRU (customer replaceable unit) is identified by a
single asterisk (*) or two asterisks (**) in the CRU ID
column. An N in the CRU ID column means the part is
not a CRU. A single asterisk (*) means the part is a Tier
1 CRU; two asterisks (**) means the part is a Tier 2
CRU.
v FRUs marked with 
OP are available as options.

138

ThinkPad G40, G41

Parts list

Overall
23

1

2
22
3

21
4
20c
5

20b

6

20a
20

19
17

18

7

16
15
8
14
13
9

12
11

10

ThinkPad G40, G41

139

Parts list
No. FRU

P/N

CRU
ID

1

Middle cover ASM

91P8539

**

2

Hinge cap

91P8533

*

3

Upper case-KBD bezel (*1) refer to item
24

91P8538

N

Upper case-KBD bezel (*1) refer to item
24

26R8030

PC card slot

91P8537

PC card slots

26R8086

5

ODD bracket

91P8803

N

6

CD-ROM TEAC CD-224E-C (bare) with
bracket

13N6710

**

CD-ROM HLDS CRN-8245B (bare) with
bracket

08K9841

DVD MKE SR-8177 (bare) with bracket

08K9845

DVD Toshiba SD-C2612 (bare) with
bracket

92P6037

Combo IV x24x10x8x24 TEAC
DW-224E (bare) with bracket

92P6016

Combo IV EC x24x10x8x24 TEAC
DW-224A13 (bare) with bracket

92P6105

Combo IV x24x10x8x24 KME UJDA-740
(bare) with bracket

92P6065

Combo IV EC x24x10x8x24 KME
UJDA-750 (bare) with bracket

92P6102

CD-R HLDS CRN-8245B (bare)

92P6565

DVD HLDS GDR-8082N (bare)

92P6567

DVD MKE SR-8178 DBZ2 (bare)

92P6571

Combo PCC UJDA-760BM2 (bare)

92P6563

Combo HLDS GCC-4241N-IMJO (bare)

92P6569

Multi PCC UJ-830 (bare)

13N6827

Multi PCC UJ-811 (bare)

92P6575

802.11 a/b Philips Wireless Card - W/W
except JP/China

91P7263

802.11 a/b Philips Wireless Card Japan

26P8447

4

7

802.11 a/b Philips Wireless Card - China 26P8446
802.11b Actiontec Wireless Card (High
Rate Wireless LAN Mini PCI Adapter III)

91P7261

802.11 b/g Clymer Wireless Card - US

93P3475

802.11 b/g Clymer Wireless Card - ROW 93P3477

140

802.11a/b/g Bartlett Wireless Card - US

93P4262

802.11a/b/g Bartlett Wireless Card EMEA

93P4264

802.11a/b/g Bartlett Wireless Card - JP

93P4266

ThinkPad G40, G41

N

N

Parts list
No. FRU
8

9

P/N

CRU
ID

System board with bottom heatsink from
238-1xx to 238x-5xx

93P3314

N

System board with bottom heatsink from
238x-7xx to 238x-9xx and 238x-Axx to
238x-Cxx

93P3318

System board for Celeron

93P4273

System board for Prescott - Integrated
VGA

93P4274

System board for Prescott - External
VGA

93P4275

Lower case with label W/W -wireless

91P8540

Lower case with label EMEA -wireless

91P8541

Lower case with label IIPC -wireless

91P8542

Lower case with label Korea -wireless

91P8543

Lower case with label Taiwan -wireless

91P8544

Lower case with label W/W -no wireless

91P8545

Lower case with label EMEA -no
wireless

91P8546

Lower case with label IIPC -no wireless

91P8547

Lower case with label Korea -no
wireless

91P8548

Lower case with label Taiwan -no
wireless

91P8549

ThinkPad G40, G41

N

141

Parts list
No. FRU
9

142

P/N

CRU
ID

Lower case with label India-all models

91P8550

N

Lower case with label wireless and
model related

91P8625

Lower case with label M/T 2389 W/W
-wireless

13N5265

Lower case with label M/T 2384 W/W
-wireless

13N5002

Lower case with label M/T 2384 W/W
-no wireless

13N5038

Lower case with label M/T 2881 W/W wireless

26R8016

Lower case with label M/T 2881 EMEA wireless

26R8017

Lower case with label M/T 2881 IIPC wireless

26R8018

Lower case with label M/T 2881 Korea wireless

26R8019

Lower case with label M/T 2881 Taiwan
- wireless

26R8020

Lower case with label M/T 2881 Brazil wireless

91P8799

Lower case with label M/T 2881 W/W no wireless

26R8021

Lower case with label M/T 2881 EMEA no wireless

26R8022

Lower case with label M/T 2881 IIPC no wireless

26R8023

Lower case with label M/T 2881 Korea no wireless

26R8024

Lower case with label M/T 2881 Taiwan
- no wireless

26R8025

Lower case with label M/T 2881 Brazil no wireless

91P8800

Lower case with label India - all models

26R8083

Lower case with label M/T 2882 W/W wireless

26R8033

Lower case with label M/T 2882 W/W no wireless

91P8729

Lower case with label M/T 2882 Brazil wireless

91P8801

Lower case with label M/T 2882 Brazil no wireless

91P8802

Lower case with label M/T 2886 W/W wireless

26R8031

Lower case with label M/T 2886 W/W no wireless

26R8032

Label wireless and model related

91P8689

ThinkPad G40, G41

Parts list
No. FRU

P/N

CRU
ID

10

Main battery Li-Ion 4P3S Sanyo up to
2.8 GHz model

08K8179

*

Main battery Li-Ion 4P3S Panasonic up
to 2.8 GHz model

08K8181

Main battery Li-Ion 4P3S Sanyo 3 GHz
model

92P0994

Main battery Li-Ion 4P3S Panasonic 3
GHz model

92P0996

Main battery Li-Ion 2P3S Sanyo

08K8183

Main battery Li-Ion 2P3S Panasonic

08K8185

Main battery Li-Ion high rate 6 cell

92P1057

Main battery Ni-MH 8S Sanyo

08K8187

Dummy battery cover

13N5218

CARD ASM DDR - 128 MB

10K0029

CARD ASM DDR - 256 MB

10K0031

CARD ASM DDR - 512 MB

10K0033

CARD ASM DDR - 1024 MB

10K0035

12

HDD cover

91P8552

*

13

HDD with tray & screws 20 GB Hitachi
DK23EA-20

92P6017

*

HDD with tray & screws 20 GB Fujitsu
MHS2020AT

92P6019

HDD with tray & screws 40 GB Hitachi
DK23EA-40

92P6021

HDD with tray & screws 40 GB Fujitsu
MHS2040T

92P6023

HDD with tray & screws 20 GB Hitachi
IC25N020ATMR04

92P6086

HDD with tray & screws 30 GB Hitachi
IC25N030ATMR04

92P6088

HDD with tray & screws 40 GB Hitachi
IC25N040ATMR04

92P6090

HDD with tray & screws 60 GB Hitachi
IC25N060ATMR04

92P6092

HDD with tray & screws 20 GB Fujitsu
MHT2020AT

92P6094

HDD with tray & screws 30 GB Fujitsu
MHT2030AT

92P6096

HDD with tray & screws 40 GB Fujitsu
MHT2040AT

92P6098

HDD with tray & screws 80 GB Moraga
B

92P6123

HDD with tray & screws 60 Moraga C

92P6122

HDD with tray & screws 40 Moraga B

92P6119

HDD with tray & screws 40 Toshiba
Proteus

92P6121

11

ThinkPad G40, G41

**

143

Parts list
No. FRU

P/N

CRU
ID

14

CDC Modem card

91P7657

**

MDC II Modem card

93P4166

15

DIMM door

91P8553

*

16

RTC battery

92P0992

N

17

Cable kit - RJ-11 x1, FPC FDD x1

91P6794

N

18

CPU DT-P4 Cel 2.0 GHz C1 stepping

91P7248

N

CPU DT-P4 Cel 2.0 GHz D1 stepping

91P7399

CPU DT-P4 Cel 2.2 GHz D1 stepping

91P7397

CPU DT-P4 2.2 GHz D1 stepping

91P7404

CPU DT-P4 Cel 2.4 GHz D1 stepping

91P7398

CPU DT-P4 Cel 2.4 GHz D1 stepping

93P4283

CPU DT-P4 Cel 2.53 GHz D1 stepping

93P4284

CPU DT-P4 Cel 2.67 GHz D1 stepping

93P4285

CPU DT-P4 Cel 2.58 GHz D1 stepping

27K9913

CPU DT-P4 2.4 GHz C1 stepping

91P7249

CPU DT-P4 2.4 GHz D1 stepping

91P7400

CPU DT-P4 2.5 GHz D1 stepping

93P4195

CPU DT-P4 2.6 GHz D1 stepping

93P4196

CPU DT-P4 2.7 GHz D1 stepping

93P4197

CPU DT-P4 2.8 GHz D1 stepping

93P4198

CPU DT-P4 2.6 GHz C1 stepping

91P7250

CPU DT-P4 2.6 GHz D1 stepping

91P7401

CPU DT-P4 2.8 GHz C1 stepping

91P7251

CPU DT-P4 2.8 GHz D1 stepping

91P7402

CPU DT-P4 3.0 GHz C1 stepping

91P7252

CPU DT-P4 3.0 GHz D1 stepping

91P7403

CPU DT-P4 3.07 GHz D1 stepping

93P4286

CPU DT-P4 3.2 GHz D1 stepping

93P4287

CPU DT-P4 3.47 GHz D1 stepping

93P4288

CPU DT-P4 3.6 GHz D1 stepping

93P4289

Misc. parts kit (HDD/optical shields,
CPU fixture) (*1) refer to item 24

91P8554

Misc. parts kit (HDD/optical shields,
CPU fixture) (*1) refer to item 24

26R8040

FDD TEAC with bracket & screws

92P5986

FDD SONY with bracket & screws

92P5988

19

20

20a External VGA card - 64 MB
External VGA card - 128 MB
20b Blank bezel FDD
Blank bezel FDD with vent

144

ThinkPad G40, G41

93P4276

N

N

N

93P4294
13N5497
26R8015

N

Parts list
No. FRU

P/N

CRU
ID

20c Heatsink - VGA External card

26R8043

N

21

Fan ASM

91P8535

N

Fan ASM -CPU 3 GHz

91P8536

Fan/heatsink ASM for F4

26R8028

NB heatsink with hex screw

26R8087

22

Keyboard** (see “Keyboard” on page 149.)

23

Pointing stick cap (standard)

91P9642

Pointing stick cap (convex)

91P8422

Pointing stick cap (flare)

91P8423

Pointing stick cap (hair composition)

84G6535

Rubber/tape kit from 238x-7xx to
238x09xx and 238x-Axx to 238x-Cxx

13N5549

Rubber/tape kit - rubber foot x4, screw
cap x4

26R8042

24

ThinkPad G40, G41

*

N

145

Parts list

LCD FRUs

146

ThinkPad G40, G41

Parts list

14.1 in. TFT
No. FRU
1

2

P/N

CRU
ID

LCD Bezel ASM (*1) refer to item 24

91P8531

N

LCD Bezel ASM - no Wireless LED (*1)
refer to item 24

26R8027

LCD Bezel ASM - Wireless LED (*1)
refer to item 24

26R8085

LCD Panel ASM Hydis

92P6636

LCD Panel ASM IDT

92P6638

N

LCD Panel ASM AUO

92P6692

3

LCD Hinge/bracket kit (*1) refer to item
23

91P8532

N

4

Wireless antenna kit

91P8551

N

5

LCD Rear Cover ASM - Wireless

91P8528

N

LCD Rear Cover ASM - no Wireless

91P8529

LCD Rear Cover ASM - Wireless

91P8677

LCD Rear Cover ASM - no Wireless

91P8678

LCD Cable ASM

91P6793

LCD Cable ASM XGA HighTech

91P6820

LCD Cable ASM Foxconn

91P6864

LCD Inverter/LED card Sumida

91P7197

LCD Inverter/LED card Ambit

91P7281

Speaker ASM

91P8198

N

P/N

CRU
ID

LCD Bezel ASM (*1) refer to item 24

91P8530

N

LCD Bezel ASM - no Wireless LED (*1)
refer to item 24

26R8026

LCD Bezel ASM - Wireless LED (*1)
refer to item 24

26R8084

LCD Panel ASM XGA LGP

11P8310

LCD Panel ASM XGA Hitachi

92P6657

LCD Panel ASM SXGA+ Samsung

92P6667

LCD Panel ASM SXGA+ Hitachi

92P6659

LCD Panel ASM XGA LGP

92P6694

LCD Panel ASM XGA Hitachi

92P5580

LCD Panel ASM SXGA Hitachi

92P5581

3

LCD Hinge/bracket kit

91P8534

N

4

Wireless antenna kit (*1) refer to item 24 91P8551

N

6

7

8

N

N

15 in. TFT
No. FRU
1

2

ThinkPad G40, G41

N

147

Parts list
No. FRU
5

6

7

8

148

P/N

CRU
ID

LCD Rear Cover ASM - Wireless

91P8528

N

LCD Rear Cover ASM - no Wireless

91P8529

LCD Rear Cover ASM - Wireless

91P8677

LCD Rear Cover ASM - no Wireless

91P8678

LCD Cable ASM XGA

91P6792

LCD Cable ASM SXGA+

91P6797

LCD Cable ASM XGA HighTech

91P6821

LCD Cable ASM SXGA+ HighTech

91P6822

LCD Cable ASM XGA Foxconn

91P6865

LCD Cable ASM SXGA Foxconn

91P6866

LCD Inverter/LED card Sumida

91P7197

LCD Inverter/LED card Ambit

91P7281

Speaker ASM

91P8198

ThinkPad G40, G41

N

N

N

Parts list

Keyboard
All of the keyboards listed below are Tier 2 CRUs
(customer replaceable units).
Language

P/N (NMB)

P/N (Chicony)

Arabic

91P8172

91P8116

Belgian

91P8166

91P8110

Chinese, Traditional

91P8192

91P8136

Czech

91P8180

91P8124

Danish

91P8160

91P8104

Dutch

91P8154

91P8098

English, U.K.

91P8150

91P8094

English, U.S.

91P8152

91P8086

French, Canadian

91P8144

91P8088

French, European

91P8152

91P8096

German

91P8148

91P8092

Greek

91P8184

91P8128

Hungarian

91P8182

91P8126

Hebrew

91P8176

91P8120

Italian

91P8162

91P8106

Japanese

91P8190

91P8134

Korean

91P8194

91P8138

Norwegian

91P8158

91P8102

Portuguese

91P8170

91P8114

Russian

91P8174

91P8118

Slovakian

91P8188

91P8132

Slovenian

91P8186

91P8130

Spanish, European

91P8164

91P8108

Spanish, Latin American

91P8146

91P8090

Swedish or Finnish

91P8156

91P8100

Swiss

91P8168

91P8112

Turkish

91P8178

91P8122

ThinkPad G40, G41

149

Parts list

Recovery CDs
All of the Recovery CDs listed below are Tier 1 CRUs
(customer replaceable units).

Windows XP Home Edition (for G40)
Windows XP Home Edition is preinstalled as the operating
system in some models.
Language

P/N

Arabic

01R7751

Chinese, Simplified

01R7940

Chinese, Traditional

01R7939

Chinese, Traditional (Hong Kong S.A.R.)

01R7941

Czech

01R7752

Danish

01R7742

Dutch

01R7749

English, U.K.

01R7740

English, U.S.

01R7739

Finnish

01R7748

French

01R7743

German

01R7744

Greek

01R7756

Hebrew

01R7753

Hungarian

01R7757

Italian

01R7747

Japanese

01R7942

Norwegian

01R7750

Polish

01R7754

Portuguese

01R7741

Russian

01R7758

Spanish

01R7745

Swedish

01R7746

Turkish

01R7755

Windows XP Home Edition (for G41)
Windows XP Home Edition is preinstalled as the operating
system in some models.
Language

P/N

Arabic

24R6043

Chinese, Simplified

24R6036

Chinese, Traditional

24R6037

Chinese, Traditional (Hong Kong S.A.R.)

24R6038

150

ThinkPad G40, G41

Parts list
Language

P/N

Czech

24R6042

Danish

24R6032

Dutch

24R6035

English, U.K.

24R6025

English, U.S.

24R6024

Finnish

24R6033

French

24R6026

German

24R6027

Greek

24R6047

Hebrew

24R6040

Hungarian

24R6046

Italian

24R6029

Japanese

24R6039

Norwegian

24R6034

Polish

24R6041

Portuguese

24R6030

Russian

24R6044

Spanish

24R6028

Swedish

24R6031

Turkish

24R6045

Windows XP Professional (for G40)
Windows XP Professional is preinstalled as the operating
system in some models.
Language

P/N

Arabic

01R7851

Chinese, Simplified

01R7944

Chinese, Traditional

01R7943

Chinese, Traditional (Hong Kong S.A.R.)

01R7945

Czech

01R7852

Danish

01R7842

Dutch

01R7849

English, U.K.

01R7840

English, U.S.

01R7839

Finnish

01R7848

French

01R7843

German

01R7844

Greek

01R7856

Hebrew

01R7853

ThinkPad G40, G41

151

Parts list
Language

P/N

Hungarian

01R7857

Italian

01R7847

Japanese

01R7946

Norwegian

01R7850

Polish

01R7854

Portuguese

01R7841

Russian

01R7858

Spanish

01R7845

Swedish

01R7846

Turkish

01R7855

Windows XP Professional (for G41)
Windows XP Professional is preinstalled as the operating
system in some models.
Language

P/N

Arabic

24R5851

Chinese, Simplified

24R5844

Chinese, Traditional

24R5845

Chinese, Traditional (Hong Kong S.A.R.)

24R5846

Czech

24R5850

Danish

24R5840

Dutch

24R5843

English, U.K.

24R5833

English, U.S.

24R5832

Finnish

24R5841

French

24R5834

German

24R5835

Greek

24R5855

Hebrew

24R5848

Hungarian

24R5854

Italian

24R5837

Japanese

24R5847

Norwegian

24R5842

Polish

24R5849

Portuguese

24R5838

Russian

24R5852

Spanish

24R5836

Swedish

24R5839

Turkish

24R5853

152

ThinkPad G40, G41

Parts list

Windows 2000 (for G40)
Windows 2000 is preinstalled as the operating system in
some models.
Language

P/N

Japanese

01R7979

Miscellaneous parts
FRU

P/N

Screw kit (including nylon-coated screws)

91P8555

Screw kit (including nylon-coated screws, M3 HDD
shield, M2.5 middle cover wireless)

26R8041

Rubber/mylar kit

91P8556

Thermal grease

91P9542

LG/IBM Logo kit

08K5860

LG/IBM Logo kit - New

91P8690

AC adapters
All of the ac adapters listed below are Tier 1 CRUs
(customer replaceable units).
FRU

P/N

AC ADAPTER 120W 2-prong Non-PFC Delta

02K7086

AC ADAPTER 120W 2-prong Non-PFC Liteon

02K7092

AC ADAPTER 120W 3-prong PFC Delta

02K7088

AC ADAPTER 120W 3-prong PFC Liteon

02K7094

AC ADAPTER 120W 2-prong PFC Delta

02K7090

AC ADAPTER 120W 2-prong PFC Liteon

02K7096

Telephone cable
All of the telephone cables listed below are Tier 1 CRUs
(customer replaceable units).
FRU

P/N

Telephone cable (Australia)

27L0467

Telephone cable (Austria)

27L0449

Telephone cable (BE/BK/BS/BD/BF)

27L0451

Telephone cable (DK/DE/PO)

27L0447

Telephone cable (FI/NO/NS)

27L0446

Telephone cable (France)

27L0443

Telephone cable (Germany)

27L0441

Telephone cable (Italy)

27L0448

ThinkPad G40, G41

153

Parts list
FRU

P/N

Telephone cable (ND/NU)

27L0444

Telephone cable (SF/SI/SG/SE)

27L0462

Telephone cable (Spain)

27L0450

Telephone cable (SW/SU)

27L0445

Telephone cable (UK/IR/NZ)

27L0442

Telephone cable (US/CAN/TWN/APS/LA/BRZL)

27L0465

Optional FRUs
All Optional FRUs are classified as Tier 1 CRUs (customer
replaceable units).
FRU

P/N

Main Battery Li-Ion 4P3S Option

08K8178

Common parts list
Tools
Triconnector wrap plug

72X8546

PC test card

35G4703

Audio wrap cable

66G5180

USB parallel test cable

05K2580

Screwdriver kit

95F3598

Torque screwdriver

05K4695

5 mm socket wrench

05K4694

Screwdriver

27L8126

Thermal grease

91P9152

ThinkPad hardware maintenance diskette version
1.69 or later
Note: Download the file from the following Web site:
http://www.lenovo.com/think/spm

—

154

ThinkPad G40, G41

Parts list

Power cords
All of the power cords listed below are Tier 1 CRUs
(customer replaceable units).
A ThinkPad power cord for a specific country or region is
usually available only in that country or region:
For 2-pin power cords:
Region

P/N

Canada, U.S.

13H5264

Japan

74P4331

Argentina

36L8870

Brazil

49P2095

For 3-pin power cords:
Region

P/N

Australia, New Zealand

76H3514

Canada, U.S.

76H3516

Italy

76H3530

Denmark

76H3520

U.K., China (Hong Kong S.A.R.)

76H3524

European countries

76H3518

India, South Africa

76H3522

Israel

76H3532

Korea

76H3535

China (P.R.C.) (other than Hong Kong S.A.R.)

02K0539

Switzerland

76H3528

ThinkPad G40, G41

155

Notices

Notices
Lenovo may not offer the products, services, or features
discussed in this document in all countries. Consult your
local Lenovo representative for information on the products
and services currently available in your area. Any
reference to a Lenovo product, program, or service is not
intended to state or imply that only that Lenovo product,
program, or service may be used. Any functionally
equivalent product, program, or service that does not
infringe any Lenovo intellectual property right may be used
instead. However, it is the user’s responsibility to evaluate
and verify the operation of any other product, program, or
service.
Lenovo may have patents or pending patent applications
covering subject matter described in this document. The
furnishing of this document does not give you any license
to these patents. You can send license inquiries, in writing,
to:
Lenovo (United States), Inc.
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Research Triangle Park, NC 27709
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Trademarks

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ThinkPad G40, G41

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Part Number: 39T6188

(1P) P/N: 39T6188



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