IBM ThinkPad X21 2660, ThinkPad X21 2661, ThinkPad X21 2662 Hardware Maintenance Manual
IBM Mobile Systems
ThinkPad X21 ((2660,,2661, 2662)
Hardware Maintenance Manual
February 2001
i
note
Before using this information and the product it supports, be sure to read the general information under
“Notices” on page 81
First Edition (February 2001)
The following paragraph does not apply to the United
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Copyright International Business Machines Corporation 2001. All rights reserved. Note to US Government
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in GSA ADP Schedule Contract with IBM Corp.
Contents
Introduction . . . . . . . . . . . . . . . . . . . 1
Important service information ........... 1
FRU replacement strategy ........... 1
Hard disk drive replacement strategy: ...... 2
How to use error messages .......... 2
How to read POST error messages ....... 2
Safety notices: multilingual translations ....... 3
Safety information . . . . . . . . . . . . . . . . . 10
General safety . . . . . . . . . . . . . . . . . 10
Electrical safety . . . . . . . . . . . . . . . . 11
Safety inspection guide ............ 12
Handling electrostatic discharge-sensitive devices 13
Grounding requirements . . . . . . . . . . . . 14
Laser compliance statement ............ 15
Laser radiation . . . . . . . . . . . . . . . . . . 16
General descriptions . . . . . . . . . . . . . . . 19
Read this first ................... 19
Related service information ............ 21
Service Web site ............... 21
Using Recovery CD .............. 21
Passwords . . . . . . . . . . . . . . . . . . 22
Power management . . . . . . . . . . . . . . 24
Checkout guide . . . . . . . . . . . . . . . . . . 27
Testing the computer ............. 27
Detecting system information with PC-Doctor . . 29
Power system checkout ............ 29
ThinkPad X21 . . . . . . . . . . . . . . . . . . 33
Product overview . . . . . . . . . . . . . . . . . 34
Specifications . . . . . . . . . . . . . . . . . 34
Status indicators . . . . . . . . . . . . . . . . 34
Fn key combinations .............. 37
Symptom-to-FRU index . . . . . . . . . . . . . . 38
Numeric error codes .............. 38
Error messages . . . . . . . . . . . . . . . . 40
Beep symptoms . . . . . . . . . . . . . . . . 41
LCD-related symptoms . . . . . . . . . . . . . 41
Intermittent problems . . . . . . . . . . . . . . 42
Undetermined problems . . . . . . . . . . . . 42
FRU replacement notices ............. 44
Screw notices . . . . . . . . . . . . . . . . . 44
Retaining serial numbers ............ 45
Removing and replacing a FRU .......... 47
1010 Battery pack ............... 48
1020 DIMM . . . . . . . . . . . . . . . . . . 49
1030 Backup battery .............. 50
1040 Hard disk drive .............. 51
1050 Keyboard . . . . . . . . . . . . . . . . 52
1060 KBD Control Panel Assemble ....... 54
Contents
iii
1070 Mini PCI adapter ............. 55
1080 Fan assembly .............. 56
1090 LCD assembly .............. 57
1100 Case Keyboard deck ........... 59
1110 Speaker . . . . . . . . . . . . . . . . . 60
1120 PC Card slot assembly .......... 61
1130 RJ11, RJ45 ............... 62
1140 System board .............. 63
1150 LCD USB cover ............. 64
1160 Front bezel ............... 64
1170 LCD panel ................ 65
Locations . . . . . . . . . . . . . . . . . . . . . 69
Front view . . . . . . . . . . . . . . . . . . . 69
Rear view . . . . . . . . . . . . . . . . . . . 70
Bottom view . . . . . . . . . . . . . . . . . . 71
Parts List . . . . . . . . . . . . . . . . . . . . . 72
X21 series model matrix ............ 72
LCD FRU . . . . . . . . . . . . . . . . . . . 72
System . . . . . . . . . . . . . . . . . . . . 75
Keyboard . . . . . . . . . . . . . . . . . . . 76
Base Cover FRU ............... 77
Miscellaneous parts . . . . . . . . . . . . . . 77
Options FRU list ................ 78
Common parts list ............... 78
Notices . . . . . . . . . . . . . . . . . . . . . 81
Trademarks . . . . . . . . . . . . . . . . . . . 81
iv ThinkPad X21
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.
FRU replacement strategy
Before replacing parts
Ensure that all BIOS and device driver fixes are
installed before replacing any FRUs listed in this
manual.
Use the following strategy to prevent unnecessary FRU
replacement and service expense:
If 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 the first
board that you replace does not correct the problem,
reinstall the original board, and then replace the other
(processor or system) board.
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
A customized setup configuration (other than default
settings) may exist on the computer you are servicing.
Running Automatic Configuration may alter those settings. Note the current configuration settings (using the
View Configuration option); then, when service has
been completed, verify that the settings are in place.
Introduction 1
Hard disk drive replacement strategy:
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 might 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.
How to read POST error messages
POST error messages are displayed on the screen as
three, four, five, or eight digits. The error messages that
can be displayed as shorter POST messages are highlighted in this index. Some digits have one meaning for
SCSI errors and a different meaning for non-SCSI errors.
The following example shows which digits display the
shorter POST error messages and also defines the SCSI
information in each digit of an eight-digit error message.
Shorter POST Messages
00000000
Reserved
Device Code
Logical Unit Number (SCSI)
ID (SCSI)
Size (SCSI)
Slot Number (SCSI)
Each SCSI device is assigned a unique SCSI ID. Duplicate
SCSI ID settings can generate a false error message. Use
the SCSI ID to determine whether an error message is
coming from an internal or an external device.
2 ThinkPad X21
Safety notices: multilingual translations
The following safety notices are provided in English,
French, German, Italian, and Spanish languages.
Safety Notice 1
Before the computer is powered-on after FRU replacement, make sure all screws, springs, or 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, muβ sichergestellt
werden, daβ keine Schrauben, Federn oder andere
Kleinteile fehlen oder im Gehäuse vergessen wurden.
Der Computer muβ geschüttelt und auf
Klappergeräusche geprüft werden. Metallteile oder
-splitter können Kurzschlüsse erzeugen.
Prima di accendere l'elaboratore dopo che é stata
effettuata la sostituzione di una FRU, accertarsi che
tutte le viti, le molle e tutte le altri parti di piccole
dimensioni siano nella corretta posizione e non siano
sparse all'interno dell'elaboratore. Verificare ciò
scuotendo l'elaboratore e prestando attenzione ad
eventuali rumori; eventuali parti o pezzetti metallici
possono provocare cortocircuiti pericolosi.
Antes de encender el sistema despues de sustituir
una FRU, compruebe que todos los tornillos, muelles
y demás piezas pequeñas se encuentran en su sitio y
no se encuentran sueltas dentro del sistema.
Compruébelo agitando el sistema y escuchando los
posibles ruidos que provocarían. Las piezas metálicas
pueden causar cortocircuitos eléctricos.
Introduction 3
Safety Notice 2
Some standby batteries contain a small amount of
nickel and cadmium. Do not disassemble it, 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.
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.
4 ThinkPad X21
Safety Notice 3
The battery pack contains small amounts of nickel. Do
not disassemble it, throw it into fire or water, or shortcircuit 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.
Las baterías contienen pequeñas cantidades de
níquel. No las desmonte, ni recargue, ni las eche al
fuego o al agua ni las cortocircuite. Deséchelas tal
como dispone la normativa local. Utilice sólo baterías
que se encuentren en la lista de piezas al sustituir la
batería. La utilización de una batería no apropiada
puede provocar la ignición o explosión de la misma.
Introduction 5
Safety Notice 4
The lithium battery can cause a fire, explosion, or
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.
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 bateria de repuesto es una bateria 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.
6 ThinkPad X21
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 unsachgemäβ 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
anschlieβend 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 7
Safety Notice 6
To avoid shock, do not remove the plastic cover that
surrounds the lower portion 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.
Safety Notice 7
Though main batteries have low voltage, a shorted or
grounded battery can produce enough current to burn
combustible materials or personnel.
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 Kurzschluβ 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.
8 ThinkPad X21
Safety Notice 8
Before removing any FRU, power-off the computer,
unplug all power cords from electrical outlets, remove
the battery pack, 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 muβ abgeschaltet, alle Stromkabel
aus der Steckdose gezogen, der Akku entfernt und
alle Verbindungskabel abgenommen sein, bevor eine
FRU entfernt wird.
Prima di rimuovere qualsiasi FRU, spegnere il
sistema, scollegare dalle prese elettriche tutti i cavi di
alimentazione, rimuovere la batteria e poi scollegare i
cavi di interconnessione.
Antes de quitar una FRU, apague el sistema,
desenchufe todos los cables de las tomas de corriente
eléctrica, quite la batería y, a continuación,
desconecte cualquier cable de conexión entre
dispositivos.
Introduction 9
Safety information
The following section contains 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:
1. Ensure you can stand safely without slipping.
2. Distribute the weight of the object equally
between your feet.
3. Use a slow lifting force. Never move suddenly or
twist when you attempt to lift.
4. Lift by standing or by pushing up with your leg
muscles; this action removes the strain from the
muscles in your back. Do not attempt to lift any
objects that weigh more than 16 kg (35 lb) or
objects that you think are too heavy for you.
Do not perform any action that causes hazards, or
that makes the equipment unsafe.
Before you start the machine, ensure that other
service representatives and the customer's personnel
are not in a 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.
Do not wear loose clothing that can be trapped in the
moving parts of a machine. Ensure that your sleeves
are fastened or rolled up above your elbows. If your
hair is long, fasten it.
Insert the ends of your necktie or scarf inside clothing
or fasten it with a non-conductive clip, approximately
8 centimeters (3 inches) from the end.
Do not wear jewelry, chains, metal-frame eyeglasses,
or metal fasteners for your clothing.
Attention: Metal objects are good electrical conduc-
tors.
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.
After service, reinstall all safety shields, guards,
labels, and ground wires. Replace any safety device
that is worn or defective.
10 ThinkPad X21
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.
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.
Do 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.
If you need to work on a machine that has exposed
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.
– When using testers, set the controls correctly
and use the approved probe leads and accessories for that tester.
Introduction
11
– 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.
Do not use worn or broken tools and testers.
Never assume that power has been disconnected
from a 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, non-grounded power extension cables, power
surges, and missing safety grounds.
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.
Do not service the following parts with the power on
when they are removed from their normal operating
places in a machine:
– Power supply units
– Pumps
– Blowers and fans
– Motor generators
and similar units. (This practice ensures correct
grounding of the units.)
If an electrical accident occurs:
– Use caution; do not become a victim yourself.
– Switch off power.
– Send another person to get medical aid.
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.
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.
12 ThinkPad X21
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 hard-
ware
The guide consists of a series of steps presented in a
checklist. 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 electrostatic
discharge-sensitive devices
Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic
discharge (ESD). ESD damage can occur when there is a
difference in charge between objects. Protect against ESD
damage by equalizing the charge so that the machine, the
part, the work mat, and the person handling the part are all
at the same charge.
Introduction
13
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:
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, 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 batteryoperated 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.
14 ThinkPad X21
Laser compliance statement
Some IBM Personal Computer models are equipped from
the factory with a CD-ROM drive. CD-ROM drives are also
sold separately as options. The CD-ROM drive is a laser
product. The CD-ROM 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.
When a CD-ROM drive is installed, note the following:
Introduction 15
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.
Laser radiation
Opening the CD-ROM drive could result in exposure to
hazardous laser radiation. There are no serviceable parts
inside the CD-ROM drive. Do not open.
Some CD-ROM drives contain an embedded Class 3A or
Class 3B laser diode. Note the following.
16 ThinkPad X21
DANGER
Laser radiation when open. Do not stare into
the beam, do not view directly with optical
instruments, and avoid direct exposure to the
beam.
Radiação por raio laser ao abrir. Não olhe
fixo no feixe de luz, não olhe diretamente por
meio de instrumentos óticos e evite
exposição direta com o feixe de luz.
Rayonnement laser si carter ouvert. Évitez de
fixer le faisceau, de le regarder directement
avec des instruments optiques, ou de vous
exposer au rayon.
Laserstrahlung bei geöffnetem Gerät. Nicht
direkt oder über optische Instrumente in den
Laserstrahl sehen und den Strahlungsbereich
meiden.
Kinyitáskor lézersugár ! Ne nézzen bele se
szabad szemmel, se optikai eszközökkel.
Kerülje a sugárnyalábbal való érintkezést !
Aprendo l'unità vengono emesse radiazioni
laser. Non fissare il fascio, non guardarlo
direttamente con strumenti ottici e evitare
l'esposizione diretta al fascio.
Radiación láser al abrir. No mire fijamente ni
examine con instrumental óptico el haz de
luz. Evite la exposición directa al haz.
Introduction 17
18 ThinkPad X21
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.
Be extremely careful during such write operations
as copying, saving, or formatting. Drives in the
computer that you are servicing may have had their
start sequence altered. If you select an incorrect
drive, data or programs might be overwritten.
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.
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 reoccurs. 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.
Be careful not to replace a nondefective FRU.
Service applied by an unauthorized/trained Thinkpad
technician may potentially void your warranty
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
4. Date of purchase
5. Failure symptoms, error codes appearing on the
display, and beep symptoms
General descriptions
19
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:
LCD panel cracked from the application of excessive
force or from being dropped
Scratched (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 or 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 non-supported
device
Forgotten computer password (making the computer
unusable)
The following symptoms might indicate damage
caused by non-warranted activities:
Missing parts might be a symptom of unauthorized
service or modification.
If the spindle of a hard disk drive becomes noisy it
may have been subjected to excessive force or from
being dropped.
I9990303 errors can be caused by exposure to strong
magnetic fields.
20 ThinkPad X21
Related service information
This section provides information about the following:
Service Website
Passwords
Power management
Service Web site
The latest maintenance diskette is available at
http://www.pc.ibm.com/partner/infotips/
The latest system program service diskette is available at
http://www.pc.ibm.com/us/support/thinkpad/tpopsys.html
or athttp://www.pc.ibm.com/partner/infotips/
Using Recovery CD
To create Service Partition and install the preloaded
system from Recovery CD, do the following;
To create Service Partition [SP]:
1. Erase all partitions on the hard-disk drive using
FDISK or similar application.
2. Boot with Recovery CD (and boot diskette if required).
3. A menu will appear stating “Your computer ori-
ginally included a Product Recovery program ...
Reinstall the Product Recovery Program? (Y/N) [
]„.
Note: If the hard-disk drive contains any partitions,
you will not receive this menu - go to step 1.
4. Enter “Y„ and Service Partition will be created and
loaded with Product Recovery Program files.
Note: If you do not want to create Service Partition,
press “N„, and then go to the “Install preloaded system from CD„ procedure.
5. Press“ENTER„at next window to continue.
Service Partition will be created. System will
automatically reboot during this process.
Recovery process will copy some files to the
Service Partition, PKUNZIP others
Follow prompts - you may be prompted to
change CDs.
System will reboot. When completed, continue
with "“Install preloaded system from CD„ procedure to install preloaded system.
Install preloaded system from CD:
1. Boot with Recovery CD (and boot diskette if required)
2. If the hard-disk drive is blank, a menu will appear
stating “Your computer originally included a
General descriptions
21
Product Recovery program ... Reinstall the
Product Recovery Program? (Y/N) [ ]„.
To install Service Partition, go to step 4 of “To
create Service Partition [SP]„ procedure.
To preload hard-disk drive without installing
Service Partition, press “N„.
3. If a menu appears asking which operating system to
install, highlight proper operating system and press
“ENTER„.
4. A menu will appear stating “Full Recovery:„.Press
“ENTER„ to select.
5. Enter “Y„ at the three windows which follow.
6. Follow prompts to complete the Recovery Process.
Passwords
As many as three passwords may be set for any ThinkPad
computer: the power-on password (POP), the hard disk
password (HDP), and the supervisor password (SVP).
When the power-on password, the hard disk password, or
the supervisor password is used, a password prompt
appears on the screen whenever the computer is turned
on. The computer does not start until the password is
entered.
Power-on password: A power-on password (POP) protects the system from being powered on by an unauthorized person. The password must be entered before an
operating system can be booted.
Hard disk password: There are two hard-disk passwords
(HDPs):
User HDP - for the user
Master HDP - for the system administrator, who can
use it to get access to the hard disk even if the user
has changed the user HDP
Note: There are two modes for the HDP: User only and
Master + User. The Master + User mode requires
two HDPs and is designed for the system administrator to input both in the same operation. The
system administrator then provides the user HDP
to the system user.
Attention:
If the user HDP is forgotten, check to see if a master HDP
was set. If a master HDP was set and can be recalled, this
will allow 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 HDPs nor recover data from
the hard-disk drive. The hard-disk drive can be replaced
for a scheduled fee.
22 ThinkPad X21
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