IBM thinkpad r40, thinkpad r40e schematic

IBM

IBM Mobile Systems
ThinkPad Computer
Hardware Maintenance Manual

Note

Before using this information and the product it
supports, be sure to read the general information
under “Notices” on page 173.

First Edition (February 2003)
The following paragraph does not apply to the United

Kingdom or any country where such provisions are
inconsistent with local law:

INTERNATIONAL BUSINESS MACHINES CORPORATION
PROVIDES THIS PUBLICATION “AS IS” WITHOUT ANY
WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
LIMITED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. Some states
do not allow disclaimer or express or implied warranties in
certain transactions; therefore, this statement may not
apply to you.

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

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

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

© Copyright International Business Machines
Corporation 2003. All rights reserved.

US Government Users Restricted Rights – Use, duplication
or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

Contents

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

Introduction .............3

Importantserviceinformation.........3

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

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

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

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

Safetyinformation............17

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

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

Safety inspection guide .........19

Handling devices that are sensitive to electrostatic

discharge............20

Grounding requirements .........21

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

General descriptions ..........25

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

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

Relatedserviceinformation.........28

Service web site ...........28

Restoring the preloaded system ......28

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

Power management ..........32

Checkout guide ............36

Testing the computer ..........36

Detecting system information with PC-Doctor. . . 38

Power system checkout .........39

ThinkPad R40.............43

Product overview ............45

Specifications ............45

Statusindicators...........48

FRUtests.............50

Fn key combinations ..........52

Symptom-to-FRU index ..........53

Numeric error codes ..........53

Error messages ...........56

Beep symptoms ...........57

No-beep symptoms ..........57

LCD-relatedsymptoms.........58

Intermittentproblems..........59

Undetermined problems .........59

FRU replacement notices .........60

Screwnotices............60

Retaining serial numbers.........61

Removing and replacing a FRU........63

1010 Battery pack...........64

1020 Ultrabay Plus device ........65

© Copyright IBM Corp. 2003

iii

1030 Hard-disk drive ..........66

1040 DIMM ............68

1050 Mini PCI adapter .........70

1060 Keyboard ...........73

1070 Backup battery ..........81

1080 Optical storage in the fixed bay .....82

1090 PC Card slot assembly .......85

1100Hingecover...........87

1110 Communication daughter card (CDC) . . . 88

1120 Fan assembly ..........94

1130CPU.............95

1140 Bluetooth antenna assembly ......97

1150 LCD assembly ..........98

1160 Keyboard bezel .........103

1170 Speaker assembly and microphone cable 108

1180 System board ..........109

1190 Hard-disk drive slot ........116

2000 Ultrabay Plus guide rail .......117

2010 I/O Bracket...........119

2020 LCD front bezel .........120

2030 Inverter card ..........121

2040 LCD panel and LCD cable assembly . . . 122
2050 Antenna assembly, hinges, and LCD cover 124

Locations ..............127

Front view for 2681, 2682, 2683, 2722, 2723, 2724 127
Rear view for 2681, 2682, 2683, 2722, 2723, 2724 129
Bottom view for 2681, 2682, 2683, 2722, 2723,

2724 .............130

Front view for 2684, 2685 ........131

Rear view for 2684, 2685 ........132

Bottom view for 2684, 2685 .......133

Parts list ..............134

R40 series model matrix ........134

Overall .............141

LCD FRUs ............156

Keyboard .............160

RecoveryCDs...........161

Miscellaneous parts ..........164

AC adapters ............167

Telephone cable ...........168

Optional FRUs ...........169

Common parts list ..........171

Notices..............173

Trademarks ............173

iv ThinkPad R40

About this manual

This manual contains service and reference information for
IBM ThinkPad R40 product. Use this manual along with
the advanced diagnostic tests to troubleshoot problems.

The manual is divided into sections as follows:
v The common sections provide general information,

guidelines, and safety information required in servicing
computers.

v The product-specific section includes service, reference,

and product-specific parts information.

Important

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

Before servicing an IBM ThinkPad product, be sure
to review the safety information under “Safety
notices: multilingual translations” on page 5, “Safety
information” on page 17, and “Laser compliance
statement” on page 22.

© Copyright IBM Corp. 2003 1

2 ThinkPad R40

Introduction

Important service information

Important

BIOS and device driver fixes are
customer-installable. The BIOS and device drivers
are posted on the IBM support site

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

Advise customers to contact the PC Company
HelpCenter at 800-772-2227 if they need assistance
in obtaining or installing any diskette 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 diskette fixes are installed before
replacing any FRUs listed in this manual.

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

v If you are instructed to replace a FRU but the

replacement does not correct the problem, reinstall
the original FRU before you continue.

v Some computers have both a processor board and a

system board. If you are instructed to replace either the
processor board or the system board, and replacing one
of them does not correct the problem, reinstall that
board, and then replace the other one.

v If an adapter or device consists of more than one FRU,

any of the FRUs may be the cause of the error. Before
replacing the adapter or device, remove the FRUs, one
by one, to see if the symptoms change. Replace only
the FRU that changed the symptoms.

Attention: The setup configuration on the computer you
are servicing may have been customized. Running
Automatic Configuration may alter the settings. Note the
current configuration settings (using the View Configuration
option); then, when service has been completed, verify that
those settings remain in effect.

© Copyright IBM Corp. 2003

3

Important service information

Strategy for replacing a hard-disk drive

Always try to run a low-level format before replacing a
hard-disk drive.

Attention: The drive startup sequence in the computer
you are servicing may have been changed. Be extremely
careful during write operations such as copying, saving, or
formatting. If you select an incorrect drive, data or
programs can be overwritten.

How to use error messages

Use the error codes displayed on the screen to diagnose
failures. If more than one error code is displayed, begin the
diagnosis with the first error code. Whatever causes the
first error code may also cause false error codes. If no
error code is displayed, see if the error symptom is listed
in the Symptom-to-FRU Index for the computer you are
servicing.

Diskette compatibility matrix

The compatibility of each of the drives with the diskettes
foritisasfollows:

Diskette
drive

3.5-inch 1.0 MB Read and write

Diskette
capacity

2.0 MB Read and write

4.0 MB Not compatible

Compatibility

4 ThinkPad R40

Safety notices

Safety notices: multilingual translations

In this manual, safety notices appear in English with a
page number reference to the appropriate multilingual,
translated safety notice found in this section.

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

Safety notice 1

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

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

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

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

(continued)

Introduction 5

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.

6 ThinkPad R40

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)

Introduction 7

Safety notices

(continuation of safety notice 2)

Alcune batterie di riserva contengono una piccola quantità di
nichel e cadmio. Non smontarle, ricaricarle, gettarle nel fuoco
o nell’acqua né cortocircuitarle. Smaltirle secondo la
normativa in vigore (DPR 915/82, successive disposizioni e
disposizioni locali). Quando si sostituisce la batteria dell’RTC
(real time clock) o la batteria di supporto, utilizzare soltanto i
tipi inseriti nell’appropriato Catalogo parti. L’impiego di una
batteria non adatta potrebbe determinare l’incendio o
l’esplosione della batteria stessa.

Algunas baterías de reserva contienen una pequeña cantidad
de níquel y cadmio. No las desmonte, ni recargue, ni las
eche al fuego o al agua ni las cortocircuite. Deséchelas tal
como dispone la normativa local. Utilice sólo baterías que se
encuentren en la lista de piezas. La utilización de una batería
no apropiada puede provocar la ignición o explosión de la
misma.

8 ThinkPad R40

Safety notices

Safety notice 3

DANGER

The battery pack contains small amounts of nickel. Do not
disassemble it, throw it into fire or water, or short-circuit it.
Dispose of the battery pack as required by local ordinances
or regulations. Use only the battery in the appropriate parts
listing when replacing the battery pack. Use of an incorrect
battery can result in ignition or explosion of the battery.

La batterie contient du nickel. Ne la démontez pas, ne
l’exposez ni au feu ni à l’eau. Ne la mettez pas en
court-circuit. Pour la mettre au rebut, conformez-vous à la
réglementation en vigueur. Lorsque vous remplacez la
batterie, veillez à n’utiliser que les modèles cités dans la liste
de pièces détachées adéquate. En effet, une batterie
inappropriée risque de prendre feu ou d’exploser.

Akkus enthalten geringe Mengen von Nickel. Sie dürfen nicht
zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder
Wasser ausgesetzt werden. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Beim Ersetzen der
Batterie nur Batterien des Typs verwenden, der in der
Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien
kann zu Entzündung oder Explosion führen.

La batteria contiene piccole quantità di nichel. Non
smontarla, gettarla nel fuoco o nell’acqua né cortocircuitarla.
Smaltirla secondo la normativa in vigore (DPR 915/82,
successive disposizioni e disposizioni locali). Quando si
sostituisce la batteria, utilizzare soltanto i tipi inseriti
nell’appropriato Catalogo parti. L’impiego di una batteria non
adatta potrebbe determinare l’incendio o l’esplosione della
batteria stessa.

(continued)

Introduction 9

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.

10 ThinkPad R40

Safety notices

Safety notice 4

DANGER

The lithium battery can cause a fire, an explosion, or a
severe burn. Do not recharge it, remove its polarized
connector, disassemble it, heat it above 100°C (212°F),
incinerate it, or expose its cell contents to water. Dispose of
the battery as required by local ordinances or regulations.
Use only the battery in the appropriate parts listing. Use of
an incorrect battery can result in ignition or explosion of the
battery.

La pile de sauvegarde contient du lithium. Elle présente des
risques d’incendie, d’explosion ou de brûlures graves. Ne la
rechargez pas, ne retirez pas son connecteur polarisé et ne
la démontez pas. Ne l’exposez pas à une temperature
supérieure à 100°C, ne la faites pas brûler et n’en exposez
pas le contenu à l’eau. Mettez la pile au rebut conformément
à la réglementation en vigueur. Une pile inappropriée risque
de prendre feu ou d’exploser.

Die Systembatterie ist eine Lithiumbatterie. Sie kann sich
entzünden, explodieren oder schwere Verbrennungen
hervorrufen. Batterien dieses Typs dürfen nicht aufgeladen,
zerlegt, über 100 C erhitzt oder verbrannt werden. Auch darf
ihr Inhalt nicht mit Wasser in Verbindung gebracht oder der
zur richtigen Polung angebrachte Verbindungsstecker
entfernt werden. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Beim Ersetzen der
Batterie nur Batterien des Typs verwenden, der in der
Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien
kann zu Entzündung oder Explosion führen.

(continued)

Introduction 11

Safety notices

(continuation of safety notice 4)

La batteria di supporto e una batteria al litio e puo
incendiarsi, esplodere o procurare gravi ustioni. Evitare di
ricaricarla, smontarne il connettore polarizzato, smontarla,
riscaldarla ad una temperatura superiore ai 100 gradi
centigradi, incendiarla o gettarla in acqua. Smaltirla secondo
la normativa in vigore (DPR 915/82, successive disposizioni e
disposizioni locali). L’impiego di una batteria non adatta
potrebbe determinare l’incendio o l’esplosione della batteria
stessa.

La batería de repuesto es una batería de litio y puede
provocar incendios, explosiones o quemaduras graves. No la
recargue, ni quite el conector polarizado, ni la desmonte, ni
caliente por encima de los 100°C (212°F), ni la incinere ni
exponga el contenido de sus celdas al agua. Deséchela tal
como dispone la normativa local.

12 ThinkPad R40

Safety notices

Safety notice 5

If the LCD breaks and the fluid from inside the LCD gets into your
eyes or on your hands, immediately wash the affected areas with
water for at least 15 minutes. Seek medical care if any symptoms
from the fluid are present after washing.

Si le panneau d’affichage à cristaux liquides se brise et que vous
recevez dans les yeux ou sur les mains une partie du fluide,
rincez-les abondamment pendant au moins quinze minutes.
Consultez un médecin si des symptômes persistent après le
lavage.

Die Leuchtstoffröhre im LCD-Bildschirm enthält Quecksilber. Bei
der Entsorgung die örtlichen Bestimmungen für Sondermüll
beachten. Der LCD-Bildschirm besteht aus Glas und kann
zerbrechen, wenn er unsachgemäß behandelt wird oder der
Computer auf den Boden fällt. Wenn der Bildschirm beschädigt ist
und die darin befindliche Flüssigkeit in Kontakt mit Haut und
Augen gerät, sollten die betroffenen Stellen mindestens 15
Minuten mit Wasser abgespült und bei Beschwerden
anschließend ein Arzt aufgesucht werden.

Nel caso che caso l’LCD si dovesse rompere ed il liquido in esso
contenuto entrasse in contatto con gli occhi o le mani, lavare
immediatamente le parti interessate con acqua corrente per
almeno 15 minuti; poi consultare un medico se i sintomi
dovessero permanere.

Si la LCD se rompe y el fluido de su interior entra en contacto
con sus ojos o sus manos, lave inmediatamente las áreas
afectadas con agua durante 15 minutos como mínimo. Obtenga
atención medica si se presenta algún síntoma del fluido despues
de lavarse.

Introduction 13

Safety notices

Safety notice 6

DANGER

To avoid shock, do not remove the plastic cover that protects
the lower part of the inverter card.

Afin d’éviter tout risque de choc électrique, ne retirez pas le
cache en plastique protégeant la partie inférieure de la carte
d’alimentation.

Aus Sicherheitsgründen die Kunststoffabdeckung, die den
unteren Teil der Spannungswandlerplatine umgibt, nicht
entfernen.

Per evitare scosse elettriche, non rimuovere la copertura in
plastica che avvolge la parte inferiore della scheda
invertitore.

Para evitar descargas, no quite la cubierta de plástico que
rodea la parte baja de la tarjeta invertida.

14 ThinkPad R40

Safety notices

Safety notice 7

DANGER

Though the main batteries have low voltage, a shorted or
grounded battery can produce enough current to burn
personnel or combustible materials.

Bien que le voltage des batteries principales soit peu élevé,
le court-circuit ou la mise à la masse d’une batterie peut
produire suffisamment de courant pour brûler des matériaux
combustibles ou causer des brûlures corporelles graves.

Obwohl Hauptbatterien eine niedrige Spannung haben,
können sie doch bei Kurzschluß oder Erdung genug Strom
abgeben, um brennbare Materialien zu entzünden oder
Verletzungen bei Personen hervorzurufen.

Sebbene le batterie di alimentazione siano a basso voltaggio,
una batteria in corto circuito o a massa può fornire corrente
sufficiente da bruciare materiali combustibili o provocare
ustioni ai tecnici di manutenzione.

Aunque las baterías principales tienen un voltaje bajo, una
batería cortocircuitada o con contacto a tierra puede
producir la corriente suficiente como para quemar material
combustible o provocar quemaduras en el personal.

Introduction 15

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.

16 ThinkPad R40

Safety information

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:
v Observe good housekeeping in the area of the

machines during and after maintenance.

v When lifting any heavy object:

1. Ensure you can stand safely without slipping.

2. Distribute the weight of the object equally between
your feet.

3. Use a slow lifting force. Never move suddenly or
twist when you attempt to lift.

4. Lift by standing or by pushing up with your leg
muscles; this action removes the strain from the
muscles in your back.

object that weighs more than 16 kg (35 lb) or objects
that you think are too heavy for you.

v Do not perform any action that causes hazards to the

customer, or that makes the equipment unsafe.

v Before you start the machine, ensure that other service

representatives and the customer’s personnel are not in
a hazardous position.

v Place removed covers and other parts in a safe place,

away from all personnel, while you are servicing the
machine.

v Keep your toolcase away from walk areas so that other

people will not trip over it.

v Do not wear loose clothing that can be trapped in the

moving parts of a machine. Make sure that your sleeves
are fastened or rolled up above your elbows. If your hair
is long, fasten it.

v Insert the ends of your necktie or scarf inside clothing or

fasten it with a nonconductive clip, approximately 8
centimeters (3 inches) from the end.

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

metal fasteners for your clothing.
Attention: Metal objects are good electrical

conductors.

v Wear safety glasses when you are hammering, drilling,

soldering, cutting wire, attaching springs, using solvents,
or working in any other conditions that might be
hazardous to your eyes.

Do not attempt to lift any

Introduction 17

Safety information

v After service, reinstall all safety shields, guards, labels,

and ground wires. Replace any safety device that is
worn or defective.

v Reinstall all covers correctly before returning the

machine to the customer.

Electrical safety

Observe the following rules when working on electrical
equipment.

Important

Use only approved tools and test equipment. Some
hand tools have handles covered with a soft
material that does not insulate you when working
with live electrical currents.

Many customers have, near their equipment, rubber
floor mats that contain small conductive fibers to
decrease electrostatic discharges. Do not use this
type of mat to protect yourself from electrical shock.

v Find the room emergency power-off (EPO) switch,

disconnecting switch, or electrical outlet. If an electrical
accident occurs, you can then operate the switch or
unplug the power cord quickly.

v Do not work alone under hazardous conditions or near

equipment that has hazardous voltages.

v Disconnect all power before:

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

v Before you start to work on the machine, unplug the

power cord. If you cannot unplug it, ask the customer to
power-off the wall box that supplies power to the
machine and to lock the wall box in the off position.

v If you need to work on a machine that has

electrical circuits, observe the following precautions:
– 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.

exposed

18 ThinkPad R40

Safety information

– When using testers, set the controls correctly and

use the approved probe leads and accessories for
that tester.

– Stand on suitable rubber mats (obtained locally, if

necessary) to insulate you from grounds such as
metal floor strips and machine frames.

Observe the special safety precautions when you work
with very high voltages; these instructions are in the
safety sections of maintenance information. Use
extreme care when measuring high voltages.

v Regularly inspect and maintain your electrical hand tools

for safe operational condition.

v Do not use worn or broken tools and testers.

v

Never assume

a circuit. First,

v Always look carefully for possible hazards in your work

area. Examples of these hazards are moist floors,
nongrounded power extension cables, power surges,
and missing safety grounds.

v Do not touch live electrical circuits with the reflective

surface of a plastic dental mirror. The surface is
conductive; such touching can cause personal injury and
machine damage.

v Do not service the following parts

when they are removed from their normal operating
places in a machine:
– Power supply units
– Pumps
– Blowers and fans
– Motor generators

and similar units. (This practice ensures correct
grounding of the units.)

v If an electrical accident occurs:

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

that power has been disconnected from

check

that it has been powered off.

with the power on

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.

Introduction 19

Safety information

If any unsafe conditions are present, you must determine
how serious the apparent hazard could be and whether
you can continue without first correcting the problem.

Consider these conditions and the safety hazards they
present:

v Electrical hazards, especially primary power (primary

voltage on the frame can cause serious or fatal
electrical shock)

v Explosive hazards, such as a damaged CRT face or a

bulging capacitor

v Mechanical hazards, such as loose or missing hardware
To determine whether there are any potentially unsafe

conditions, use the following checklist at the beginning of
every service task. Begin the checks with the power off,
and the power cord disconnected.

Checklist:

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

2. Power-off the computer. Disconnect the power cord.

3. Check the power cord for:
a. A third-wire ground connector in good condition.

Use a meter to measure third-wire ground
continuity for 0.1 ohm or less between the external
ground pin and frame ground.

b. The power cord should be the type specified in the

parts list.

c. Insulation must not be frayed or worn.

4. Remove the cover.

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

6. Check inside the unit for any obvious unsafe
conditions, such as metal filings, contamination, water
or other liquids, or signs of fire or smoke damage.

7. Check for worn, frayed, or pinched cables.

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

Handling devices that are sensitive to electrostatic discharge

Any computer part containing transistors or integrated
circuits (ICs) should be considered sensitive to electrostatic
discharge (ESD.) ESD damage can occur when there is a
difference in charge between objects. Protect against ESD

20 ThinkPad R40

Safety information

damage by equalizing the charge so that the machine, the
part, the work mat, and the person handling the part are all
at the same charge.

Notes

1. Use product-specific ESD procedures when they
exceed the requirements noted here.

2. Make sure that the ESD protective devices you
use have been certified (ISO 9000) as fully
effective.

When handling ESD-sensitive parts:
v Keep the parts in protective packages until they are

inserted into the product.

v Avoid contact with other people.
v Wear a grounded wrist strap against your skin to

eliminate static on your body.

v Prevent the part from touching your clothing. Most

clothing is insulative and retains a charge even when
you are wearing a wrist strap.

v Use the black side of a grounded work mat to provide a

static-free work surface. The mat is especially useful
when handling ESD-sensitive devices.

v Select a grounding system, such as those listed below,

to provide protection that meets the specific service
requirement.

Note

The use of a grounding system is desirable but
not required to protect against ESD damage.

– Attach the ESD ground clip to any frame ground,

ground braid, or green-wire ground.

– Use an ESD common ground or reference point

when working on a double-insulated or
battery-operated system. You can use coax or
connector-outside shells on these systems.

– 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.

Introduction 21

Laser compliance statement

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.

22 ThinkPad R40

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.

O uso de controles, ajustes ou desempenho de
procedimentos diferentes daqueles aqui especificados pode
resultar em perigosa exposição à radiação.

Pour éviter tout risque d’exposition au rayon laser, respectez
les consignes de réglage et d’utilisation des commandes,
ainsi que les procédures décrites.

Werden Steuer- und Einstellelemente anders als hier
festgesetzt verwendet, kann gefährliche Laserstrahlung
auftreten.

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

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

Opening the CD-ROM drive, 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.

Introduction 23

Laser compliance statement

Some CD-ROM drives, DVD-ROM drives, or other optical
storage devices contain an embedded Class 3A or Class
3B laser diode. Note the following:

DANGER

Emits visible and invisible laser radiation when open. Do not
stare into the beam, do not view directly with optical
instruments, and avoid direct exposure to the beam.

Radiação por raio laser ao abrir. Não olhe fixo no feixe de
luz, não olhe diretamente por meio de instrumentos óticos e
evite exposição direta com o feixe de luz.

Rayonnement laser si carter ouvert. Évitez de fixer le
faisceau, de le regarder directement avec des instruments
optiques, ou de vous exposer au rayon.

Laserstrahlung bei geöffnetem Gerät. Nicht direkt oder über
optische Instrumente in den Laserstrahl sehen und den
Strahlungsbereich meiden.

Kinyitáskor lézersugár ! Ne nézzen bele se szabad szemmel,
se optikai eszközökkel. Kerülje a sugárnyalábbal való
érintkezést !.

Aprendo l’unità vengono emesse radiazioni laser. Non fissare
il fascio, non guardarlo direttamente con strumenti ottici e
evitare l’esposizione diretta al fascio.

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

24 ThinkPad R40

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

v Only certified trained personnel should

service the computer.

v Read the entire FRU removal and replacement

page before replacing any FRU.

v Use new nylon-coated screws when you

replace FRUs.

v Be extremely careful during such write

operations as copying, saving, or formatting.

Drives in the computer that you are servicing
sequence might have been altered. If you select
an incorrect drive, data or programs might be
overwritten.

v Replace FRUs only for the correct model.

When you replace a FRU, make sure the model
of the machine and the FRU part number are
correct by referring to the FRU parts list.

v A FRU should not be replaced because of a

single, unreproducible failure. Single failures

can occur for a variety of reasons that have
nothing to do with a hardware defect, such as
cosmic radiation, electrostatic discharge, or
software errors. Consider replacing a FRU only
when a problem recurs. If you suspect that a
FRU is defective, clear the error log and run the
test again. If the error does not recur, do not
replace the FRU.

v Be careful not to replace a nondefective FRU.

What to do first

When you do return a FRU, you must include the following
information in the parts exchange form or parts return form
that you attach to it:
__ 1. Name and phone number of servicer
__ 2. Date of service
__ 3. Date on which the machine failed

© Copyright IBM Corp. 2003

25

Read this first

__ 4. Date of purchase
__ 5. Failure symptoms, error codes appearing on the

display, and beep symptoms

__ 6. Procedure index and page number in which the

failing FRU was detected
__ 7. Failing FRU name and part number
__ 8. Machine type, model number, and serial number
__ 9. Customer’s name and address

Note for warranty:

During the warranty period, the customer may be
responsible for repair costs if the computer damage was
caused by misuse, accident, modification, unsuitable
physical or operating environment, or improper
maintenance by the customer. The following list provides
some common items that are not covered under warranty
and some symptoms that might indicate that the system
was subjected to stress beyond normal use.

Before checking problems with the computer, determine
whether the damage is covered under the warranty by
referring to the following:

The following are not covered under warranty:

v LCD panel cracked from the application of excessive

force or from being dropped

v Scratched (cosmetic) parts
v Distortion, deformation, or discoloration of the cosmetic

parts

v Cracked or broken plastic parts, broken latches, broken

pins, or broken connectors caused by excessive force

v Damage caused by liquid spilled into the system
v Damage caused by the improper insertion of a PC Card

or the installation of an incompatible card

v Damage caused by foreign material in the diskette drive
v Diskette drive damage caused by pressure on the

diskette drive cover or by the insertion of a diskette with
multiple labels

v Damaged or bent diskette eject button
v Fuses blown by attachment of a nonsupported device
v Forgotten computer password (making the computer

unusable)

v Sticky keys caused by spilling a liquid onto the keyboard

The following symptoms might indicate damage
caused by nonwarranted activities:

v Missing parts might be a symptom of unauthorized

service or modification.

26 ThinkPad R40