IBM G40 SM Service Manual

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IBM Mobile Systems ThinkPad Hardware Maintenance Manual

Computer

February 2004

This manual supports:

ThinkPad G40

It is

Note

Before using this information and the product it supports, be sure to read the general information under “Notices” on page 135.

Third Edition (February 2004)

The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with local law:

INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION “AS IS” WITHOUT ANY WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE LIMITED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states

not allow disclaimer or express or implied warranties in certain transactions; therefore, this statement may not apply to you.

This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements or changes to the products or the programs described in this publication at any time.

possible that this publication may contain references to, or information about, IBM products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that IBM intends to announce such IBM products, programming, or services in your country.

Requests for technical information about IBM products should be made to your IBM authorized dealer or your IBM marketing representative.

Government Users Restricted Rights – Use, duplication

disclosure restricted by GSA ADP Schedule Contract

with IBM Corp.

Chapter 1. About this manual . . . . . . . .1

Chapter 2. Introduction . . . . . . . . . .3

Important service information . . . . . . . . .3

Strategy for replacing FRUs . . . . . . . .3

How to use error messages . . . . . . . .4

Diskette compatibility matrix . . . . . . . . .4

Safety notices: multilingual translations . . . . . .5

Safety information . . . . . . . . . . . .17

General safety . . . . . . . . . . . .17

Electrical safety . . . . . . . . . . .18

Safety inspection guide . . . . . . . . .20

Handling devices that are sensitive to electrostatic

discharge . . . . . . . . . . . .21

Grounding requirements . . . . . . . . .22

Laser compliance statement . . . . . . . . .22

Chapter 3. General descriptions . . . . . . .25

Read this first . . . . . . . . . . . . .25

What to do first . . . . . . . . . . .25

Related service information . . . . . . . . .28

Service Web site . . . . . . . . . . .28

Restoring the preloaded system . . . . . .28

Passwords . . . . . . . . . . . . .30

Power management . . . . . . . . . .33

Checkout guide . . . . . . . . . . . .35

Testing the computer . . . . . . . . . .35

Detecting system information with PC-Doctor . . .37

Power system checkout . . . . . . . . .37

Chapter 4. ThinkPad G40 . . . . . . . . .41

Product overview . . . . . . . . . . . .43

Specifications . . . . . . . . . . . .43

Status indicators . . . . . . . . . . .45

FRU tests . . . . . . . . . . . . .47

key combinations . . . . . . . . . .49

Symptom-to-FRU index . . . . . . . . . .50

Numeric error codes . . . . . . . . . .50

Error messages . . . . . . . . . . .54

Beep symptoms . . . . . . . . . . .55

No-beep symptoms . . . . . . . . . .55

LCD-related symptoms . . . . . . . . .56

Intermittent problems . . . . . . . . . .57

Undetermined problems . . . . . . . . .57

FRU replacement notices . . . . . . . . .58

Screw notices . . . . . . . . . . . .58

Retaining serial numbers . . . . . . . . .59

Removing and replacing a FRU . . . . . . . .61

1010 Battery pack . . . . . . . . . . .62

1020 Hard disk drive . . . . . . . . . .63

iii

1030 DIMM door . . . . . . . . . . .65

1040 DIMM . . . . . . . . . . . .66

1050 Modem daughter card (MDC) . . . . .67

1060 Backup battery . . . . . . . . . .68

1070 Keyboard . . . . . . . . . . .69

1080 Middle cover . . . . . . . . . .71

1090 Hinge cover . . . . . . . . . . .72

1095 FDD assembly . . . . . . . . . .73

1100 CD-ROM/DVD drive . . . . . . . .74

1110 Mini PCI adapter . . . . . . . . .75

1115 PC card slot assembly . . . . . . . .76

1120 LCD and Keyboard bezel assembly . . . .79

1125 LCD assembly . . . . . . . . . .81

1130 Keyboard bezel . . . . . . . . . .83

1140 Fan assembly . . . . . . . . . .85

1145 Fan (CPU 3 GHz) and CPU fixture . . . .87

1150 CPU . . . . . . . . . . . . .89

1160 CD-ROM/DVD drive bracket . . . . . .90

1170 FDD bracket . . . . . . . . . . .91

1180 System board . . . . . . . . . .92

1190 Lower case assembly . . . . . . . .93

1195 Modem cable . . . . . . . . . .94

2000 PC card slot assembly . . . . . . . .95

2010 LCD front bezel . . . . . . . . . .96

2020 Inverter card . . . . . . . . . .97

2030 Speaker assembly . . . . . . . . .98

2040 LCD cable assembly . . . . . . . .99

2045 Wireless antenna and rear cover . . . . 101

2050 LCD panel and hinge assembly . . . . 102

Locations . . . . . . . . . . . . . . 103

Front view . . . . . . . . . . . . 103

Rear view . . . . . . . . . . . . . 104

Bottom view . . . . . . . . . . . . 105

Parts list . . . . . . . . . . . . . . 106

G40 series . . . . . . . . . . . . 106

Overall . . . . . . . . . . . . . .119

LCD FRUs . . . . . . . . . . . . 124

Keyboard . . . . . . . . . . . . . 126

Recovery CDs . . . . . . . . . . . 127

Miscellaneous parts . . . . . . . . . . 130

adapters . . . . . . . . . . . . 130

Telephone cable . . . . . . . . . . . 131

Optional FRUs . . . . . . . . . . . 132

Common parts list . . . . . . . . . . 133

Notices . . . . . . . . . . . . . . 135

Trademarks . . . . . . . . . . . . 135

ThinkPad G40

Chapter 1. About this manual

This manual contains service and reference information for IBM ThinkPad G40 product. Use this manual along with the advanced diagnostic tests to troubleshoot problems.

The manual is divided into sections as follows:

The common sections provide general information, guidelines, and safety information required in servicing computers.

The product-specific section includes service, reference, and product-specific parts information.

Important

This manual is intended for trained service personnel who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.

Before servicing an IBM ThinkPad product, be sure

review the safety information under “Safety notices: multilingual translations” on page 5, “Safety information” on page 17, and “Laser compliance statement” on page 22.

ThinkPad G40

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Chapter 2. Introduction

Important service information

Important

Software (i.e., BIOS and device driver) fixes are customer-installable. The BIOS and device drivers are posted on the IBM support site

http://www.ibm.com/pc/support

Advise customers to contact the PC Company HelpCenter at 800-772-2227 if they need assistance

obtaining or installing any software fixes.

Customers in Canada should call IBM HelpPC at 800-565-3344 for assistance or download information.

Strategy for replacing FRUs

Before replacing parts

Make sure that all software fixes are installed before replacing any FRUs listed in this manual.

Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:

you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the original FRU before you continue.

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

them does not correct the problem, reinstall that

board, and then replace the other one.

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

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.

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

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

3.5-inch

Diskette capacity

1.0 MB

2.0 MB

4.0 MB

Compatibility

Read and write

Not compatible

ThinkPad G40

Safety notices

Safety notices: multilingual translations

this manual, safety notices appear in English with a

page number reference to the appropriate multilingual, translated safety notice found in this section.

The following safety notices are provided in English, French, German, Hebrew, Italian, and Spanish.

Safety notice 1

Before the computer is powered-on after FRU replacement, make sure all screws, springs, and other small parts are in place and are not left loose inside the computer. Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical shorts.

Avant de remettre l’ordinateur sous tension après remplacement d’une unité en clientèle, vérifiez que tous les ressorts, vis et autres pièces sont bien en place et bien fixées. Pour ce faire, secouez l’unité et assurez-vous qu’aucun bruit suspect ne se produit. Des pièces métalliques ou des copeaux de métal pourraient causer un court-circuit.

Bevor nach einem FRU-Austausch der Computer wieder angeschlossen wird, muß sichergestellt werden, daß keine Schrauben, Federn oder andere Kleinteile fehlen oder im Gehäuse vergessen wurden. Der Computer muß geschüttelt und auf Klappergeräusche geprüft werden. Metallteile oder-splitter können Kurzschlüsse erzeugen.

Prima di accendere l’elaboratore dopo che é stata effettuata la sostituzione di una FRU, accertarsi che tutte le viti, le molle e tutte le altri parti di piccole dimensioni siano nella corretta posizione e non siano sparse all’interno dell’elaboratore. Verificare ciò scuotendo l’elaboratore e prestando attenzione ad eventuali rumori; eventuali parti o pezzetti metallici possono provocare cortocircuiti pericolosi.

(continued)

Chapter 2. Introduction

Safety notices

(continuation of safety notice 1)

Antes de encender el sistema despues de sustituir una FRU, compruebe que todos los tornillos, muelles y demás piezas pequeñas se encuentran en su sitio y no se encuentran sueltas dentro del sistema. Compruébelo agitando el sistema y escuchando los posibles ruidos que provocarían. Las piezas metálicas pueden causar cortocircuitos eléctricos.

ThinkPad G40

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)

Chapter 2. Introduction

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

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

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

apropiada puede provocar la ignición o explosión de la misma.

ThinkPad G40

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

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.

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

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.

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.

(continued)

Chapter 2. Introduction

Safety notices

(continuation of safety notice 3)

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.

ThinkPad G40

à la

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

incorrect battery can result in ignition or explosion of the battery.

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

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

réglementation en vigueur. Une pile inappropriée risque

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)

Chapter 2. Introduction

Safety notices

(continuation of safety notice 4)

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

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.

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.

ThinkPad G40

Si le

Si la

Safety notices

Safety notice 5

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.

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.

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

lavarse.

Chapter 2. Introduction

Safety notices

Safety notice 6

DANGER

avoid shock, do not remove the plastic cover that protects

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.

ThinkPad G40

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,

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.

Chapter 2. Introduction

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.

ThinkPad G40

v Do

Safety information

The following section presents the safety information that you need to be familiar with before servicing an IBM mobile computer.

General safety

Follow these rules to ensure general safety:

Observe good housekeeping in the area of the machines during and after maintenance.

When lifting any heavy object:

Ensure you can stand safely without slipping.

Distribute the weight of the object equally between

your feet.

Use a slow lifting force. Never move suddenly or

twist when you attempt to lift.

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.

not perform any action that causes hazards to the

customer, or that makes the equipment unsafe.

Before you start the machine, ensure that other service representatives and the customer’s personnel are not in

hazardous position.

Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine.

Keep your toolcase away from walk areas so that other people will not trip over it.

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

long, fasten it.

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.

not wear jewelry, chains, metal-frame eyeglasses, or

metal fasteners for your clothing.

Attention: Metal objects are good electrical

conductors.

Wear safety glasses when you are hammering, drilling, soldering, cutting wire, attaching springs, using solvents,

working in any other conditions that might be

hazardous to your eyes.

Chapter 2. Introduction

v Do

–

v If

Safety information

After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective.

Reinstall all covers correctly before returning the machine to the customer.

Fan louvers on the machine help to prevent overheating

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

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.

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.

not work alone under hazardous conditions or near

equipment that has hazardous voltages.

Disconnect all power before:

Performing a mechanical inspection Working near power supplies Removing or installing main units

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.

you need to work on a machine that has exposed

electrical circuits, observe the following precautions:

ThinkPad G40

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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.

Regularly inspect and maintain your electrical hand tools for safe operational condition.

not use worn or broken tools and testers.

Never assume that power has been disconnected from

circuit. First, check that it has been powered off.

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.

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.

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

similar units. (This practice ensures correct

and grounding of the units.)

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

Chapter 2. Introduction

a. A

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-IBM features or options not covered by this inspection guide.

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:

Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal electrical shock)

Explosive hazards, such as a damaged CRT face or a bulging capacitor

Mechanical hazards, such as loose or missing hardware

determine whether there are any potentially unsafe

To 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:

Check exterior covers for damage (loose, broken, or sharp edges).

Power-off the computer. Disconnect the power cord.

Check the power cord for:

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.

The power cord should be the type specified in the parts list.

Insulation must not be frayed or worn.

Remove the cover.

Check for any obvious non-IBM alterations. Use good judgment as to the safety of any non-IBM alterations.

Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water

other liquids, or signs of fire or smoke damage.

Check for worn, frayed, or pinched cables.

ThinkPad G40

–

Safety information

Check that the power-supply cover fasteners (screws

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

the same charge.

Notes

Use product-specific ESD procedures when they exceed the requirements noted here. Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective.

When handling ESD-sensitive parts:

Keep the parts in protective packages until they are inserted into the product.

Avoid contact with other people.

Wear a grounded wrist strap against your skin to eliminate static on your body.

Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap.

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.

Select a grounding system, such as those listed below,

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.

Chapter 2. Introduction

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 IBM Personal Computer models are equipped from the factory with an optical storage device such as a CD-ROM drive or a DVD-ROM drive. They are also sold separately as options. The drive 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.

ThinkPad G40

Laser compliance statement

When a CD-ROM drive, DVD drive or the other laser product 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.

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.

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

Chapter 2. Introduction

Laser compliance statement

Some CD-ROM drives, DVD-ROM drives, or other optical storage devices contain an embedded Class 3A or Class

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,

optikai eszközökkel. Kerülje a sugárnyalábbal való

érintkezést !.

Aprendo l’unità vengono emesse radiazioni laser. Non fissare

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

haz.

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v Be

v A

v Be

__ 1.

__ 2.

__ 3.

Chapter 3. General descriptions

This chapter includes descriptions for any ThinkPad model that has the PC-Doctor 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

Only certified trained personnel should service the computer.

Read the entire FRU removal and replacement page before replacing any FRU.

Use new nylon-coated screws when you replace FRUs.

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

incorrect drive, data or programs might be

overwritten.

Replace FRUs only for the correct model.

When you replace a FRU, make sure the model

the machine and the FRU part number are

correct by referring to the FRU parts list.

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.

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:

Name and phone number of servicer Date of service Date on which the machine failed

__ 5.

__ 6.

__ 7.

__ 8.

__ 9.

Read this first

__ 4.

Date of purchase Failure symptoms, error codes appearing on the display, and beep symptoms Procedure index and page number in which the failing FRU was detected Failing FRU name and part number Machine type, model number, and serial number 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:

LCD panel cracked from the application of excessive force or from being dropped

Scratched (cosmetic) parts

Distortion, deformation, or discoloration of the cosmetic parts

Cracked or broken plastic parts, broken latches, broken pins, or broken connectors caused by excessive force

Damage caused by liquid spilled into the system

Damage caused by the improper insertion of a PC Card

the installation of an incompatible card

Damage caused by foreign material in the diskette drive

Diskette drive damage caused by pressure on the diskette drive cover or by the insertion of a diskette with multiple labels

Damaged or bent diskette eject button

Fuses blown by attachment of a nonsupported device

Forgotten computer password (making the computer unusable)

Sticky keys caused by spilling a liquid onto the keyboard

The following symptoms might indicate damage caused by nonwarranted activities:

Missing parts might be a symptom of unauthorized service or modification.

ThinkPad G40

Read this first

the spindle of a hard disk drive becomes noisy, it may

have been subjected to excessive force, or dropped.

Chapter 3. General descriptions

1. If

Related service information

This section provides information about the following:

“Service Web site” “Restoring the preloaded system” “Passwords” on page 30 “Power management” on page 33

Service Web site

When the latest maintenance diskette and the system program service diskette become available, a notice will be posted on http://www.ibm.com/pc/partner/infotips

Restoring the preloaded system

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.

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

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 127.

The Product Recovery program is in the Access IBM 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.

use the Product Recovery program to install your

pre-installed software, do the following:

possible, save all your files to media other than your

hard disk.

Turn off your computer.

ThinkPad G40

or a

Related service information

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 Access IBM Predesktop Area appears on the screen. Next, double-click the “Recover

factory contents” icon. The Product Recovery

program main menu opens.

Select the recovery options you want, and then follow the instructions on the screeen.

When the Product Recovery program finishes, your computer will restart and begin the configuration process.

Using the recovery CD

You can delete the Access IBM Predesktop Area partition

going into the BIOS Setup Utility (F1 at IBM Splash Screen), and then choosing Security -> IBM Predesktop Area --> Disabled. This will make the Access IBM 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 Access IBM Predesktop Area unless you do this, because it is not visible. You would have to use IBM ThinkPad Maintenance Diskette to completely wipe the drive.

create the Access IBM Predesktop Area and install the preloaded system from the recovery CD, do the following:

create the Access IBM Predesktop Area:

Erase all partitions on the hard disk drive, using FDISK

similar application.

Boot with the recovery CD (and the boot diskette if required).

The following message is displayed: “Your computer

originally included a Product Recovery program ... Reinstall the Product Recovery program? (Y/N) [ ]”.

Note:

the hard disk drive contains any partition, you

not receive this message; go to step 1.

Press the Y key. The Access IBM Predesktop Area is created and loaded with the Product Recovery program files.

Chapter 3. General descriptions

5. At

7. If

v To

8. If

9. A

Related service information

Note: If you do not want to create the Access IBM

Predesktop Area, press the N key, and then go

step 8.

the next window, press Enter to continue.

The Access IBM Predesktop Area is created. The system automatically reboots during this process.

The recovery process copies some files to the Access IBM Predesktop Area, and PKUNZIPs others.

Follow the prompts. You may be prompted to change CDs.

When the process is complete, the system reboots. Continue to step 6 to install preloaded system.

the preloaded system from the CD:

Install

Boot with the recovery CD (and the boot diskette if required.)

the hard disk drive is blank, the following message

displayed: “Your computer originally included a

Product Recovery program ... Reinstall the Product Recovery program? (Y/N) [ ]”.

install the Access IBM Predesktop Area, go to

step 4.

preload the hard disk drive without installing the

Access IBM Predesktop Area, press the N key.

you get a message asking which operating system

install, select the proper operating system and

press Enter.

message is displayed: “Full Recovery:”. Press

Enter to select.

10.

11.

each of the next three windows, press the Y key.

Follow the prompts to complete the recovery.

Passwords

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).

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.

ThinkPad G40

it to

Related service information

Power-on password:

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

booted.

Hard disk password:

There are two hard disk passwords (HDPs):

User HDP—for the user

Master HDP—for the system administrator, who can use

get access to the hard disk even if the user has

changed the user HDP

There are two modes for the HDP: User only and

Note:

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, IBM does not 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:

supervisor password (SVP) protects the system information stored in the IBM BIOS Setup Utility. The SVP must be entered in order to get access to the IBM 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

replaced for a scheduled fee.

How to remove the power-on password

remove a POP that has been forgotten, do the

following:

(A) If no SVP has been set:

Turn off the computer.

Remove the battery pack.

For how to remove the battery pack, see “1010 Battery pack” on page 62.

Remove the backup battery.

For how to remove the backup battery, see “1060 Backup battery” on page 68.

Chapter 3. General descriptions

6. At

8. In

Related service information

Turn on the computer and wait until the IBM Splash

Screen disappears.

After the POST ends, the password prompt does not

appear. The POP has been removed.

Reinstall the backup battery and the battery pack.

(B) If an SVP has been set and is known by the servicer:

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.

Enter the SVP. Select Start setup utility.

Select Security, using the cursor keys to move down

the menu.

Select Password.

Select Power-On Password.

the Enter Current Password field, enter the SVP.

When the Enter New Password field opens, leave it

blank and press Enter twice.

the Changes have been saved window, press Enter.

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 servicer, IBM does not 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.

remove a user HDP that has been forgotten, when the

SVP and the master HDP are known, do the following:

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.

Enter Master HDP. Select Start setup utility. Enter

SVP.

Select Security, using the cursor keys to move down

the menu.

Select Password.

Select Hard-disk x password, where x is the letter of

the hard disk drive. A pop-up window opens.

Select Master HDP.

Enter the master HDP; then leave the New Password

field blank and press Enter twice.

Press F10.

Select Yes in the Setup Configuration window.

ThinkPad G40

1. If

v If a

v If

Related service information

Both user HDP and master HDP will have been removed.

Power management

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:

you are using the ACPI operating system and you

press Fn+F3,

The LCD backlight turns off. The hard disk drive motor stops.

the time set on the “Turn off monitor” timer in the

operating system expires,

The LCD backlight turns off.

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:

The LCD is powered off. The hard disk drive is powered off. The CPU stops.

enter standby mode, press Fn+F4.

Note: You can change the action of Fn+F4, if you are

using the ACPI operating system.

certain circumstances, the computer goes into standby

mode automatically:

“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.

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

hibernation mode, the following occurs:

The system status, RAM, VRAM, and setup data are stored on the hard disk.

The system is powered off.

Chapter 3. General descriptions

v If

–

If a

v If

Related service information

To cause the computer to enter hibernation mode, do any

the following:

Press the Fn+F12 keys.

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.

the computer goes into hibernation mode

Also, automatically in either of the following conditions:

“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.

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.

ThinkPad G40

If an

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 IBM

products. The use of non-IBM products, prototype cards, or modified options can lead to false indications of errors and invalid system responses.

Identify the failing symptoms in as much detail as possible.

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 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 43.

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 IBM BIOS Setup Utility before you run PC-Doctor. On the IBM BIOS Setup Utility screen, press F9, Enter, F10, and then Enter.

DOS (hereafter called PC-Doctor.) You can

Note: When you initialize the computer configuration,

some devices are disabled, such as the serial port.

you test one of these devices, you will need to

enable it by using PS2.EXE.

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.

Insert the PC-Doctor disk into the diskette drive; then power on the computer.

the computer cannot be powered on, go to “Power system checkout” on page 37, and check the power sources.

error code appears, go to “Symptom-to-FRU

index” on page 50.

the first screen, select the model and press Enter.

Follow the instructions on the screen.

The main panel of PC-Doctor appears.

Chapter 3. General descriptions

v In

6. To

Checkout guide

Select Diagnostics with the arrow keys, and press Enter.

pull-down menu appears. (Its exact form depends on

the model.)

PC-Doctor menu does not mean the formal

Note:

support device list. Some unsupported device name may appear in the PC-Doctor menu.

The options on the test menu are as follows:

Diagnostics

Run Normal Test

Run Quick Test

CPU/Coprocessor

Systemboard

Video Adapter

Parallel Ports

Fixed Disks

Diskette Drives

Interactive Tests

Keyboard

Video

Internal Speaker

Mouse

Diskette

System Load

CD-ROM/DVD Test

Actiontec Wireless Radio

Other Devices

Communication

Wireless LAN

Memory Test – Full

Memory Test – Quick

Notes:

the Keyboard test in Interactive Tests, the Fn key should

held down for at least 2 seconds; otherwise, it cannot be

sensed.

Video Adapter test supports only the LCD display on the

ThinkPad computer. Before running PC-Doctor DOS, detach the external monitor.

Run the applicable function test.

Follow the instructions on the screen. If there is a problem, PC-Doctor shows messages describing it.

exit the test, select Quit — Exit Diag.

ThinkPad G40

Checkout guide

To cancel the test, press Esc.

After executing PC-Doctor, check the system

Note:

time/date and reset them if needed.

Detecting system information with PC-Doctor

PC-Doctor can detect the following system information:

Hardware Info

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

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

Power system checkout

verify a symptom, do the following:

Power off the computer.

Remove the battery pack.

Connect the ac adapter.

Check that power is supplied when you power on the computer.

Power off the computer.

Disconnect the ac adapter and install the charged battery pack.

Check that the battery pack supplies power when you power on the computer.

you suspect a power problem, see the appropriate one

the following power supply checkouts: “Checking the ac adapter” on page 38

Chapter 3. General descriptions

v If

3. If

4. If

v If

Checkout guide

“Checking operational charging” “Checking the battery pack” on page 39 “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:

the power-on indicator does not turn on, check the power cord of the ac adapter for correct continuity and installation.

the computer does not charge during operation, go to ″Checking operational charging.″

check the ac adapter, do the following:

Unplug the ac adapter cable from the computer.

Measure the output voltage at the plug of the ac adapter cable. See the following figure:

Pin Voltage (V dc)

Vcc_+ 16V

Ground

Vcc_+ 16V

Ground

the voltage is not correct, replace the ac adapter.

the voltage is acceptable, do the following:

Replace the system board.

the problem persists, go to “Product overview” on

page 43.

Noise from the ac adapter does not always indicate

Note:

defect.

Checking operational charging

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

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.

ThinkPad G40

1 + 0 to +

+ 0 to +

3. If

4. If

Checkout guide

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%

its capacity. This protects the battery pack from being

overcharged or from having a shortened life.

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

charge. Remove it from the computer and leave it room temperature for a while. After it cools down,

reinstall and recharge it.

check the battery pack, do the following:

Power off the computer.

Remove the battery pack and measure the voltage between battery terminals 1 (+) and 5 (−). See the following figure:

Terminal Voltage (V dc)

12.6

(Li-ion)

9.6 (NiMH)

Ground (−)

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.

the voltage is still less than +11.0 V dc after

recharging, replace the battery.

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 .

the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board.

Chapter 3. General descriptions

v If

Checkout guide

Checking the backup battery

the following:

Power off the computer, and unplug the ac adapter from it.

Turn the computer upside down.

Remove the battery pack (see “1010 Battery pack” on page 62).

Remove the backup battery (see “Checking the battery pack” on page 39).

Measure the voltage of the backup battery. See the following figure.

Terminal Voltage (V dc)

+2.5 to +3.2

Ground

the voltage is correct, replace the system board.

the voltage is not correct, replace the backup battery.

the backup battery discharges quickly after

replacement, replace the system board.

ThinkPad G40

Chapter 4. ThinkPad G40

Product overview . . . . . . . . . . . .43

Specifications . . . . . . . . . . . .43

Status indicators . . . . . . . . . . .45

FRU tests . . . . . . . . . . . . .47

key combinations . . . . . . . . . .49

Symptom-to-FRU index . . . . . . . . . .50

Numeric error codes . . . . . . . . . .50

Error messages . . . . . . . . . . .54

Beep symptoms . . . . . . . . . . .55

No-beep symptoms . . . . . . . . . .55

LCD-related symptoms . . . . . . . . .56

Intermittent problems . . . . . . . . . .57

Undetermined problems . . . . . . . . .57

FRU replacement notices . . . . . . . . .58

Screw notices . . . . . . . . . . . .58

Retaining serial numbers . . . . . . . . .59

Restoring the serial number of the system unit 59

Retaining the UUID . . . . . . . . .59

Removing and replacing a FRU . . . . . . . .61

1010 Battery pack . . . . . . . . . . .62

1020 Hard disk drive . . . . . . . . . .63

1030 DIMM door . . . . . . . . . . .65

1040 DIMM . . . . . . . . . . . .66

1050 Modem daughter card (MDC) . . . . .67

1060 Backup battery . . . . . . . . . .68

1070 Keyboard . . . . . . . . . . .69

1080 Middle cover . . . . . . . . . .71

1090 Hinge cover . . . . . . . . . . .72

1095 FDD assembly . . . . . . . . . .73

1100 CD-ROM/DVD drive . . . . . . . .74

1110 Mini PCI adapter . . . . . . . . .75

1115 PC card slot assembly . . . . . . . .76

1120 LCD and Keyboard bezel assembly . . . .79

1125 LCD assembly . . . . . . . . . .81

1130 Keyboard bezel . . . . . . . . . .83

1140 Fan assembly . . . . . . . . . .85

1145 Fan (CPU 3 GHz) and CPU fixture . . . .87

1150 CPU . . . . . . . . . . . . .89

1160 CD-ROM/DVD drive bracket . . . . . .90

1170 FDD bracket . . . . . . . . . . .91

1180 System board . . . . . . . . . .92

1190 Lower case assembly . . . . . . . .93

1195 Modem cable . . . . . . . . . .94

2000 PC card slot assembly . . . . . . . .95

2010 LCD front bezel . . . . . . . . . .96

2020 Inverter card . . . . . . . . . .97

2030 Speaker assembly . . . . . . . . .98

2040 LCD cable assembly . . . . . . . .99

2045 Wireless antenna and rear cover . . . . 101

2050 LCD panel and hinge assembly . . . . 102

Locations . . . . . . . . . . . . . . 103

Front view . . . . . . . . . . . . 103

Rear view . . . . . . . . . . . . . 104

Bottom view . . . . . . . . . . . . 105

Parts list . . . . . . . . . . . . . . 106

G40 series . . . . . . . . . . . . 106

Overall . . . . . . . . . . . . . .119

LCD FRUs . . . . . . . . . . . . 124

14.1 in. TFT . . . . . . . . . . . 125

in. TFT . . . . . . . . . . . 125

Keyboard . . . . . . . . . . . . . 126

Recovery CDs . . . . . . . . . . . 127

For Windows XP Home Edition . . . . . 127

For Windows XP professional . . . . . . 129

For Windows 2000 . . . . . . . . . 129

Miscellaneous parts . . . . . . . . . . 130

adapters . . . . . . . . . . . . 130

Telephone cable . . . . . . . . . . . 131

Optional FRUs . . . . . . . . . . . 132

Common parts list . . . . . . . . . . 133

Tools . . . . . . . . . . . . . 133

Power cords . . . . . . . . . . . 133

Notices . . . . . . . . . . . . . . 135

Trademarks . . . . . . . . . . . . 135

ThinkPad G40

Product overview

This section presents the following product-unique information:

“Specifications” “Status indicators” on page 45 “FRU tests” on page 47 “Fn key combinations” on page 49

Specifications

The following table lists the specifications of the ThinkPad G40 series:

Feature

Processor

Bus architecture

Memory (standard)

Memory (optional)

Graphic memory

CMOS RAM v

hard disk drive v

Description

Intel GHz, L2 512 KB cache

Intel

Pentium

Celeron

processor 2.4/ 2.6/2.8/3.0

processor 2.0/2.2/2.4 GHz,

128 KB cache

400 MHz FSB HUB link PCI bus LPC bus 266MHz DDR SDRAM (PC2100)

128 MB DDR SDRAM SO DIMM (PC2100) card × 1 256 MB DDR SDRAM SO DIMM (PC2100) card × 1 512 MB DDR SDRAM SO DIMM (PC2100) card × 1

128 MB DDR SDRAM SO DIMM (PC2100) card 256 MB DDR SDRAM SO DIMM (PC2100) card 512 MB DDR SDRAM SO DIMM (PC2100)

(maximum

1024 MB)

UMA architecture

242 bytes

20.0 GB, 4200 rpm, 2.5-inch, IDE interface

30.0 GB, 4200 rpm, 2.5-inch, IDE interface

40.0 GB, 4200 rpm, 2.5-inch, IDE interface

60.0 GB, 4200 rpm, 2.5-inch, IDE interface

(continued)

Chapter 4. ThinkPad G40

Product overview

Feature

Display

I/O port

Audio

Mini PCI adapter

Card

Modem card v

adapter

Fixed bays

Preinstalled operating system

Description

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

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

Internal monaural speaker Software control volume

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

One Type-III

V.90 (V.92 design) modem daughter card (MDC)

120-watt type

CD-ROM drive DVD drive CD-RW/DVD drive FDD drive

Windows XP Home Edition Windows XP Professional Windows 2000Professional (Japan only)

ThinkPad G40

is on

Product overview

Status indicators

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

1 3

Indicator

1 Wireless

status

Meaning Green: Wireless is operational. This indicator

74 5 6

when the Wireless is on and

not in suspend mode.

Note: The wireless indicator is only available on selected

models.

(continued)

Chapter 4. ThinkPad G40

Product overview

Indicator

Meaning

2 Num lock Green: The numeric keypad on the keyboard

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:

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

5 Power on Green: The computer is on and ready to use.

This indicator stays lit whenever the computer is on and is not in standby mode.

6 Battery

status

Green: 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.

7 Standby

status

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

Product overview

FRU tests

The following table shows the test for each FRU.

FRU

System board 1.

Applicable test

Diagnostics --> CPU/Coprocessor Diagnostics --> Systemboard

Power

LCD unit

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

Diagnostics --> Video Adapter Interactive Tests --> Video

Modem, MDC 1.

Make sure the modem is set up correctly. Replace the modem jack and the modem

card in turn, and run the following tests in Diagnostics --> Communication:

Lucent Soft Modem Loopback Lucent Soft Modem Dialtone

Audio

Interactive Tests --> Internal Speaker Diagnostics --> Other Devices --> Analog

Devices AC97 CODEC Test

Speaker

Card slots 1.

Interactive Tests --> Internal Speaker

Diagnostics --> Systemboard --> PCMCIA

Insert a PC Card Wrap Plug into every PC

Card Slot and run Diagnostics -->

Systemboard --> PCMCIA External Loop

Keyboard

Diagnostics --> Systemboard -->

Keyboard

Interactive Tests --> Keyboard

TrackPoint or pointing device

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

not a hardware problem. If the pointer stops after a short time, no service action is necessary.

enabling the TrackPoint does not correct the

problem, continue with the following:

Interactive Tests --> Mouse

Hard disk drive Diagnostics --> Fixed Disks

Diskette drive 1.

Diagnostics --> Diskette Drives Interactive Tests --> Diskette

(continued)

Chapter 4. ThinkPad G40

1. If

2. If

3. If

Product overview

FRU

CD-ROM or DVD drive

Memory

Fan

Applicable test

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

two DIMMs are installed, remove one of

them and run Diagnostics --> Memory Test—Quick.

the problem does not recur, return the DIMM to its place, remove the other one, and run the test again.

the test does not detect the error, run Diagnostics --> Memory Test—Full.

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

ThinkPad G40

of Fn

Product overview

Fn key combinations

The following table shows the function of each combination

with a function key.

Key combination

Fn+F1

Fn+F2

Fn+F3

Fn+F4

Fn+F5

Fn+F6

Fn+F7

Description

Reserved.

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

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.

Open the Wireless Radio Control screen.

Note: This function is supported only in

Windows XP and Windows 2000. To use this function, the IBM PM device driver must be installed on the computer.Windows 98 supports

802.11 Wireless Radio power control only.

Reserved.

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:

CRT display Computer display + CRT display Computer display

Note:

Windows XP and Windows 2000, this

setting can be changed so that pressing it starts

presentation scheme directly with no need to

start Presentation Director.

Fn+F9

Fn+F10

Fn+F11

Fn+F12

Fn+Home

Fn+End

Open the EasyEject Utility screen.

Note: This function is supported only in

Windows XP and Windows 2000.

Reserved.

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 IBM

device driver must be installed on the

computer.

The computer display becomes brighter.

The computer display becomes less bright.

Fn+Spacebar Enable the FullScreen Magnifier function.

Chapter 4. ThinkPad G40

If no

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.

numeric error is displayed for each error detected in POST or system operation. In the displays, n can be any number.

numeric code is displayed, check the narrative descriptions of symptoms. If the symptom is not described there, go to “Intermittent problems” on page 57.

Note

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

Numeric error codes

Symptom or error 0175

CRC1, stop POST

Bad task—The EEPROM checksum

not correct.

0177

SVP data, stop POST task.

Bad

0182

CRC2. Enter BIOS Setup

Bad and load Setup Defaults.

0185

startup sequence settings.

Bad Enter BIOS Setup and load setup defaults.

ThinkPad G40

FRU or action, in sequence System board.

System board.

Run IBM BIOS Setup Utility and Load Setup Defaults.

Run IBM BIOS Setup Utility and Load Setup Defaults

Symptom-to-FRU index

Symptom or error 0187

data access error—The

EAIA access to EEPROM is failed.

0188

Invalid

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

0189

RFID configuration

Invalid information area—The EEPROM checksum is not correct.

0190

low-battery error

Critical

0191

System

Security — Invalid

remote change requested.

0199

System

security — IBM security

password retry count exceeded.

0200

disk error—The hard disk

Hard

not working.

021x

Keyboard

0230

Shadow RAM fails at offset nnnn.

0231

System RAM fails at offset nnnn.

0232

Extended error—Extended RAM fails at offset nnnn.

error

RAM error—Shadow

RAM error—System

RAM

FRU or action, in sequence System board.

System board.

Charge the battery pack.

Battery pack.

The system configuration change has failed. Confirm the operation and try again.

clear the error, enter the

IBM BIOS Setup Utility.

Confirm supervisor password and try again. Run IBM BIOS Setup Utility.

Reseat the hard disk drive.

Load Setup Defaults in IBM BIOS Setup Utility. Hard disk drive. System board.

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

System board.

DIMM.

System board.

DIMM. System board.

Chapter 4. ThinkPad G40

Symptom-to-FRU index

Symptom or error 0250

battery error—System

System battery is dead.

0251

CMOS checksum

System bad—Default configuration used.

0260

timer error

System

0270

time clock error

Real

0271

and time error—Neither

Date the date nor the time is set in the computer.

0280

boot incomplete—Default configuration used.

02D0

cache error

System

02F4

CMOS not writable

EISA

02F5

test failed

DMA

02F6

Software

NMI failed

02F7

timer NMI failed

Fail-safe

1802

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

network card is

FRU or action, in sequence Replace the backup battery

and run IBM BIOS Setup Utility to reset the time and date.

Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date.

System board.

Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date.

System board.

Run IBM BIOS Setup Utility to reset the time and date.

Load “Setup Default” in IBM BIOS Setup Utility.

DIMM. System board.

CPU

Load Setup Defaults in IBM BIOS Setup Utility.

Replace the backup battery. System board.

DIMM. System board.

Remove Mini PCI network card.

System board.

ThinkPad G40

1. If

go to

2. If

3. If

4. If

5. If

Symptom-to-FRU index

Symptom or error 1810

disk partition layout error

Hard

FRU or action, in sequence

the Access IBM Predesktop Area has been previously disabled, then

the IBM BIOS Setup Utility by pressing F1 to open the IBM BIOS Setup Utility. Select Security->IBM Predesktop Area->Access IBM Predesktop Area. Set this item to Disabled. Save and Exit.

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.

item 2 failed, press F3 in the welcome screen in

RECOVER TO FACTORY CONTENTS Run FDISK,

and then delete all partitions. Run RECOVER

FACTORY CONTENTS

Access IBM Predesktop

Area again.

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

and perform full

recovery from it.

item 4 failed, replace the hard disk drive.

Chapter 4. ThinkPad G40

2. If

Symptom-to-FRU index

Error messages

Symptom or error

Device address conflict.

Allocation error for device.

Failing bits: nnnn.

Invalid system configuration data.

I/O device IRQ conflict.

Operating system not found. 1.

Hibernation error.

Fan error.

Thermal sensing error.

FRU or action, in sequence

Load “Setup Defaults” in IBM BIOS Setup Utility.

Backup battery. System board.

Load “Setup Defaults” in IBM BIOS Setup Utility.

Backup battery. System board.

DIMM. System board.

Load “Setup Defaults” in IBM BIOS Setup Utility.

Backup battery. System board.

Check that the operating system has no failure and is installed correctly.

Enter IBM BIOS Setup Utility and see whether the hard disk drive and the diskette drive are properly identified.

Reseat the hard disk drive. Reinstall the operating system. Diskette drive. Hard disk drive. System board.

Restore the system configuration to what it was before the computer entered hibernation mode.

memory size has been

changed, re-create the hibernation file.

Fan. System board.

ThinkPad G40

Beep symptoms

Symptom-to-FRU index

Symptom or error

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

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

Two short beeps with error codes.

Two short beeps and a blank screen.

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

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

Only cursor appears.

Five short beeps and a blank screen.

No-beep symptoms

Symptom or error

beep, power-on indicator

on, LCD blank, and no POST.

beep, power-on indicator on, and LCD blank during POST.

The power-on password prompt appears.

The hard disk password prompt appears.

The DOS full screen looks smaller.

FRU or action, in sequence

Reseat the LCD connector.

LCD assembly. External CRT. System board.

System board. LCD assembly. DIMM.

POST error. See “Numeric error codes” on page 50.

System board.

DIMM. DIMM.

System board

Reinstall operating system. System board

FRU or action, in sequence

Make sure that every connector is connected tightly and correctly.

DIMM. System board.

Reseat DIMM. System board.

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

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

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

Chapter 4. ThinkPad G40

or a

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

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:

XGA: 8 or more bright dots, 8 or more dark dots,

total of 9 or more bright and dark dots.

SXGA+: 11 or more bright dots, 13 or more dark

dots, or a total of 16 or more bright and dark dots.

Note:

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

beep, power-on indicator on, and a blank LCD during POST.

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

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

Horizontal or vertical lines displayed on LCD.

FRU or action, in sequence System board.

Reseat the LCD connectors.

LCD assembly. System board.

See important note for “LCD-related symptoms.”

Reseat all LCD connectors. LCD assembly. System board.

LCD assembly.

ThinkPad G40

2. If no

3. If

h. PC

6. If

7. If

at a

Symptom-to-FRU index

Intermittent problems

Intermittent system hang problems can be due to a variety

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:

Run the diagnostic test for the system board in loop mode at least 10 times.

error is detected, do not replace any FRUs.

any error is detected, replace the FRU shown by the FRU code. Rerun the test to verify that no more errors exist.

Undetermined problems

You are here because the diagnostic tests did not identify which adapter or device failed, wrong devices are installed,

short circuit is suspected, or the system is inoperative. 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 37.)

Power off the computer. Visually check each FRU for damage. Replace any damaged FRU. Remove or disconnect all of the following devices:

Non-IBM devices Printer, mouse, and other external devices Battery pack Hard disk drive External diskette drive

DIMM

CD-ROM and diskette drive

Cards

Power on the computer.

Determine whether the problem has changed.

the problem does not recur, reconnect the removed

devices one at a time until you find the failing FRU.

the problem remains, replace the following FRUs one

time (do not replace a nondefective FRU): System board LCD assembly

Chapter 4. ThinkPad G40

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 IBM ThinkPad computers, this problem is addressed with special nylon-coated screws that have the following characteristics:

They maintain tight connections. They do not easily come loose, even with shock or vibration. They are harder to tighten. They should be used only once.

the following when you service this machine:

Keep the screw kit (for the P/N, see “Miscellaneous parts” on page 130) in your tool bag. Always use new screws. Use a torque screwdriver if you have one.

screws as follows:

Tighten

Plastic to plastic

Turn an additional 90 degrees after the screw head touches the surface of the plastic part:

90 degrees more

(Cross-section)

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)

Torque driver

you have a torque driver, refer to the “Torque” column

for each step.

ThinkPad G40

FRU replacement notices

Make sure 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 the screws are tightened firmly.

Retaining serial numbers

This section includes the following descriptions:

“Restoring the serial number of the system unit” “Retaining the UUID”

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.

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:

Install the ThinkPad hardware maintenance diskette version 1.69 or later, and restart the computer.

From the main menu, select 1. Set System Identification.

Select 2. Read S/N data from EEPROM.

The serial number for each device is displayed. Write down the serial number of the system unit, designated as follows:

20: System unit serial number

After you have replaced the system board, restore the serial number by doing the following:

Install the ThinkPad hardware maintenance diskette version 1.69 or later and restart the computer.

From the main menu, select 1. Set system identification.

Select 1. Add S/N data from EEPROM.

Follow the instructions on the screen.

The serial number of the system unit is written on

Note:

the label attached on the bottom of the computer.

Retaining the UUID

The Universally Unique Identifier (UUID) is a 128-bit number uniquely assigned to your computer at production

Chapter 4. ThinkPad G40

FRU replacement notices

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:

Install the ThinkPad hardware maintenance diskette version 1.69 or later, and restart the computer.

From the main menu, select 4. Assign UUID.

new UUID is created and written. If a valid UUID

already exists, it is not overwritten.

ThinkPad G40

1. Do

7. To

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:

not try to service any computer unless you have

been trained and certified. An untrained person runs the risk of damaging parts.

Before replacing any FRU, review “FRU replacement notices” on page 58.

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.

Follow the correct sequence in the steps for removing the FRU, as indicated in the drawings by the numbers

square callouts.

When turning a screw to replace a FRU, turn it in the direction indicated by the arrow in the drawing.

When removing the FRU, move it in the direction indicated by the arrow in the drawing.

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 103.

When replacing a FRU, use the correct screw as shown in the procedures.

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.

Attention: Before the computer is powered on after FRU

replacement, make sure that all screws, springs, and other small parts are in place and are not 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).

Chapter 4. ThinkPad G40

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.

ThinkPad G40

v Do

Removing and replacing a FRU

1020 Hard disk drive

Attention

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.

Before removing the drive, have the user make a backup copy of all the information on the drive if possible.

Never remove the drive while the system is operating or is in suspend mode.

For access, remove this FRU:

“1010 Battery pack” on page 62

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)

Chapter 4. ThinkPad G40

Removing and replacing a FRU

When installing: Make sure that the hard disk connector

firmly attached.

ThinkPad G40

Removing and replacing a FRU

1030 DIMM door

For access, remove this FRU:

“1010 Battery pack” on page 62

Loosen the screws 1, but do not remove them.

Note:

Step Screw (quantity)

1

M2.5 captive screw (2)

Torque

0.3 Nm

3.2 kgfcm)

(

Chapter 4. ThinkPad G40

Removing and replacing a FRU

1040 DIMM

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1030 DIMM door” on page 65

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.

ThinkPad G40

Removing and replacing a FRU

1050 Modem daughter card (MDC)

For access, remove this FRU:

“1010 Battery pack” on page 62 “1030 DIMM door” on page 65

Step Screw (quantity)

1

M2.5 x 5 mm, Silver (2)

Torque

0.3 kgfcm)

(3.2

Chapter 4. ThinkPad G40

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:

“1010 Battery pack” on page 62 “1030 DIMM door” on page 65

ThinkPad G40

Removing and replacing a FRU

1070 Keyboard

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62

Step Screw (quantity)

1

M2.5 × 7 mm, Black (2)

(continued)

Torque

0.3

(3.2

kgfcm)

Chapter 4. ThinkPad G40

Removing and replacing a FRU

In step 2, push the keyboard from the bottom, while at the same time pushing a little in the direction of the arrow

step 3. Take care not to bend the keyboard when

lifting it at step 4.

ThinkPad G40

Removing and replacing a FRU

1080 Middle cover

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1070 Keyboard” on page 69

Step Screw (quantity)

1

M2.5 × 8 mm, Black (1)

Torque

0.3 kgfcm)

(3.2

Note: The bottom-side screw that secures the middle

cover may be a security or tamper-proof screw for

802.11a/b wireless models.

Chapter 4. ThinkPad G40

Removing and replacing a FRU

1090 Hinge cover

For access, remove this FRU:

“1010 Battery pack” on page 62 “1070 Keyboard” on page 69 “1080 Middle cover” on page 71

When installing: Align the hinge cover squarely and push

down.

ThinkPad G40

Removing and replacing a FRU

1095 FDD assembly

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1070 Keyboard” on page 69

Step Screw (quantity)

1

M2.5 × 5 mm, Silver (1)

Torque

0.3 Nm kgfcm)

(3.2

Chapter 4. ThinkPad G40

Removing and replacing a FRU

1100 CD-ROM/DVD drive

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1070 Keyboard” on page 69

Step Screw (quantity)

1

M2.5 stud Phillips × 5 mm, Silver (1) 0.3 Nm

ThinkPad G40

Torque

kgfcm)

(3.2

Removing and replacing a FRU

1110 Mini PCI adapter

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1070 Keyboard” on page 69 “1080 Middle cover” on page 71

Chapter 4. ThinkPad G40

Removing and replacing a FRU

1115 PC card slot assembly

For access, remove these FRUs, in order:

Step Screw (quantity)

1

M2.5 × 8 mm, Black (2)

(continued)

ThinkPad G40

Torque

0.3 Nm (3.2

kgfcm)

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 from the system board.

Step Screw (quantity)

2

M2.5 × 8 mm, Black (2)

Torque

0.3 Nm kgfcm)

(3.2

Push the PC card eject button 4 to pop the button out. While holding the PC card door down, pull on the PC card eject button and carefully remove the PC card slot assembly 5.

(continued)

Chapter 4. ThinkPad G40

Removing and replacing a FRU

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.

ThinkPad G40

Removing and replacing a FRU

1120 LCD and Keyboard bezel assembly

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1070 Keyboard” on page 69 “1080 Middle cover” on page 71 “1090 Hinge cover” on page 72

Step Screw (quantity)

1

M2.5 × 7 mm, Black (2)

(continued)

Torque

0.3 Nm kgfcm)

(3.2

Chapter 4. ThinkPad G40

Removing and replacing a FRU

Step Screw (quantity)

4

5

2.5 × 7 mm, Black (9)

2.5 × 3 mm, Silver (1)

Torque

0.3 Nm kgfcm)

(3.2

0.3 Nm kgfcm)

(3.2

ThinkPad G40

Removing and replacing a FRU

1125 LCD assembly

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1070 Keyboard” on page 69 “1080 Middle cover” on page 71 “1090 Hinge cover” on page 72

Step Screw (quantity)

1

M2.5 × 7 mm, Black (2)

(continued)

Torque

0.3 Nm kgfcm)

(3.2

Chapter 4. ThinkPad G40

Removing and replacing a FRU

Step Screw (quantity)

4

2.5 × 7 mm, Silver (4)

ThinkPad G40

Torque

0.3 Nm kgfcm)

(3.2

Removing and replacing a FRU

1130 Keyboard bezel

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1030 DIMM door” on page 65 “1070 Keyboard” on page 69 “1080 Middle cover” on page 71 “1090 Hinge cover” on page 72 “1125 LCD assembly” on page 81

Step Screw (quantity)

1

2

2.5 × 7 mm, Black (9)

2.5 × 3 mm, Silver (1)

(continued)

Torque

0.3 Nm kgfcm)

(3.2

0.3 Nm

(3.2

kgfcm)

Chapter 4. ThinkPad G40

Removing and replacing a FRU

Remove the keyboard bezel in the direction of arrow 3.

ThinkPad G40

Removing and replacing a FRU

1140 Fan assembly

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1030 DIMM door” on page 65 “1070 Keyboard” on page 69 “1080 Middle cover” on page 71 “1090 Hinge cover” on page 72 “1120 LCD and Keyboard bezel assembly” on page 79

prevent the CPU from being pulled from the socket when the fan is removed, remove the screw 2and reinsert it 3. Then carefully turn the screw to separate the fan as you lift up 4.

Step Screw (quantity)

1

M2.5 captive × (4)

(continued)

Torque

0.3 Nm kgfcm)

(3.2

Chapter 4. ThinkPad G40

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

Removing and replacing a FRU

1145 Fan (CPU 3 GHz) and CPU fixture

For access, remove these FRUs, in order:

prevent the CPU from being pulled from the socket when the fan is removed, remove the screw 2and reinsert it 3. Then carefully turn the screw to separate the fan as you lift up 4.

Step Screw (quantity)

1

M2.5 captive × (4)

(continued)

Torque

0.3 Nm kgfcm)

(3.2

Chapter 4. ThinkPad G40

Removing and replacing a FRU

When installing: Apply 1 gram (approx.) of thermal

Caution: When installing, be sure the screw that was

moved from position 2 to 3 above, is returned to its original location.

ThinkPad G40

Removing and replacing a FRU

1150 CPU

For access, remove these FRUs, in order:

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.

Chapter 4. ThinkPad G40

Removing and replacing a FRU

1160 CD-ROM/DVD drive bracket

For access, remove these FRUs, in order:

Step Screw (quantity)

1

M2.5 × 5 mm, Silver (3)

ThinkPad G40

Torque

0.3 Nm (3.2

kgfcm)

Removing and replacing a FRU

1170 FDD bracket

For access, remove these FRUs, in order:

Step Screw (quantity)

1

2

M2.5 × 5 mm, Silver (3)

M2.5 × 3 mm, Silver (1)

Torque

0.3 Nm kgfcm)

(3.2

0.3 Nm

(3.2

kgfcm)

Chapter 4. ThinkPad G40

Removing and replacing a FRU

1180 System board

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1030 DIMM door” on page 65 “1070 Keyboard” on page 69 “1080 Middle cover” on page 71 “1090 Hinge cover” on page 72 “1100 CD-ROM/DVD drive” on page 74 “1110 Mini PCI adapter” on page 75 “1120 LCD and Keyboard bezel assembly” on page 79 “1140 Fan assembly” on page 85 “1150 CPU” on page 89 “1145 Fan (CPU 3 GHz) and CPU fixture” on page 87 “1160 CD-ROM/DVD drive bracket” on page 90 “1095 FDD assembly” on page 73 “1170 FDD bracket” on page 91

Step Screw (quantity)

1

M2.5 × 5 mm, Silver (2)

ThinkPad G40

Torque

0.3 Nm kgfcm)

(3.2

Removing and replacing a FRU

1190 Lower case assembly

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1030 DIMM door” on page 65 “1070 Keyboard” on page 69 “1080 Middle cover” on page 71 “1090 Hinge cover” on page 72 “1100 CD-ROM/DVD drive” on page 74 “1110 Mini PCI adapter” on page 75 “1120 LCD and Keyboard bezel assembly” on page 79 “1160 CD-ROM/DVD drive bracket” on page 90 “1095 FDD assembly” on page 73 “1170 FDD bracket” on page 91 “1180 System board” on page 92

Chapter 4. ThinkPad G40

Removing and replacing a FRU

1195 Modem cable

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1030 DIMM door” on page 65 “1070 Keyboard” on page 69 “1080 Middle cover” on page 71 “1090 Hinge cover” on page 72 “1110 Mini PCI adapter” on page 75 “1100 CD-ROM/DVD drive” on page 74 “1110 Mini PCI adapter” on page 75 “1125 LCD assembly” on page 81 “1130 Keyboard bezel” on page 83 “1160 CD-ROM/DVD drive bracket” on page 90 “1095 FDD assembly” on page 73 “1170 FDD bracket” on page 91 “1180 System board” on page 92

ThinkPad G40

Removing and replacing a FRU

2000 PC card slot assembly

For access, remove these FRUs, in order:

“1010 Battery pack” on page 62 “1030 DIMM door” on page 65 “1070 Keyboard” on page 69 “1080 Middle cover” on page 71 “1090 Hinge cover” on page 72 “1110 Mini PCI adapter” on page 75 “1100 CD-ROM/DVD drive” on page 74 “1110 Mini PCI adapter” on page 75 “1120 LCD and Keyboard bezel assembly” on page 79 “1160 CD-ROM/DVD drive bracket” on page 90 “1095 FDD assembly” on page 73 “1170 FDD bracket” on page 91 “1180 System board” on page 92

Step Screw (quantity)

1

M2.5 × 8 mm, Silver (4)

Torque

0.3 Nm kgfcm)

(3.2

Chapter 4. ThinkPad G40

IBM G40 SM Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Chapter 1. About this manual

Chapter 2. Introduction

Important service information

Strategy for replacing FRUs

Strategy for replacing a hard disk drive

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 electrostatic discharge

Grounding requirements

Laser compliance statement

Chapter 3. General descriptions

Read this first

What to do first

Related service information

Service Web site

Restoring the preloaded system

Using the recovery CD

Passwords

Power-on password:

Hard disk password:

Supervisor password:

How to remove the power-on password

How to remove the hard disk password

Power management

Screen blank mode

Standby mode

Hibernation mode

Checkout guide

Testing the computer

Detecting system information with PC-Doctor

Hardware Info

Utility

Power system checkout

Checking the ac adapter

Checking operational charging

Checking the battery pack

Checking the backup battery

Chapter 4. ThinkPad G40

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

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 CD-ROM/DVD drive

1110 Mini PCI adapter

1115 PC card slot assembly