IBM ThinkPad A22m 2628, ThinkPad A20m, ThinkPad A21m, ThinkPad Dock, MT 2628 Hardware Maintenance Manual

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IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual

November 2001

ThinkPad A22mWireless models

(MT 2628)

ThinkPad Dock (MT 2631)

This manual supports:



Note

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

Second Edition (November 2001) 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.

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

Contents

Introduction .............1

Important service information .........1

Strategy for replacing FRUs ........1

How to use error messages ........2

Diskette compatibility matrix .........2

Safety notices: multilingual translations ......3

Safety information............14

General safety............14

Electrical safety ...........15

Safety inspection guide .........16

Handling electrostatic discharge-sensitive devices 17

Grounding requirements .........18

Laser compliance statement.........18

General descriptions ..........23

Read this first .............23

What to do first ...........23

Related service information .........25

Service Web site ...........25

Product recovery program ........25

Passwords .............27

Power management ..........30

Checkout guide ............33

Testing the computer ..........33

Detecting system information with PC-Doctor. . . 35

Power system checkout .........35

ThinkPad A22m wireless models.......39

Product overview ............41

Specifications ............41

Status indicators ...........42

FRU tests .............44

Fn key combinations ..........46

Symptom-to-FRU index ..........47

Numeric error codes ..........47

Error messages ...........50

Beep symptoms ...........51

No beep symptoms ..........51

LCD-related symptoms .........52

Intermittent problems ..........52

Undetermined problems .........53

FRU replacement notices .........54

Screw notices ............54

Retaining serial numbers.........55

Removing and replacing a FRU........57

1010 Battery pack...........58

1020 DIMM ............59

1030 Mini PCI adapter .........61

1040 Backup battery ..........63

1050 Hard-disk drive or RF ID adapter ....64

iii

1060 Ultrabay 2000 device ........66

1070 Dummy card ..........68

1080 Keyboard ...........69

1090 Keyboard CRU insulator .......72

1100 Hinge cover and clear sheet icon ....73

1110 Keyboard bezel and speaker ......74

1120 Speaker cable ..........77

1130 Wireless PC Card and sub card .....78

1140 PC Card slot assembly .......87

1150 Fan assembly ..........89

1160 Diskette drive ..........91

1170 Upper shield...........93

1180 TV card ............94

1190 CPU socket and CPU ........95

1200 System board and RJ45/11 connector

assembly ............96

2010 LCD assembly ..........99

2020 Front bezel...........105

2030 Inverter card ..........106

2040 LCD panel ...........107

2050 Antenna assembly ........110

3010 ThinkPad Dock PCI cover ......112

3020 ThinkPad Dock top cover ......114

Locations ..............119

Front view.............119

Rear view.............120

Bottom view ............121

Parts list ..............122

Overall .............122

LCD FRUs ............126

Keyboard .............127

Recovery CDs ...........128

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

Optional FRUs ...........131

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

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

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

iv ThinkPad A22m wireless models

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 FRU replacement and service expense:

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.

Strategy for replacing a hard-disk drive

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

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

How to use error messages

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

Diskette compatibility matrix

The compatibility of each of the drives with the diskettes for it is as follows:

Diskette drive

Diskette capacity

Compatibility

3.5-inch 1.0 MB Read and write

2.0 MB Read and write

4.0 MB Not compatible

Important service information

2 ThinkPad A22m wireless models

Safety notices: multilingual translations

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

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, and other small parts are in place and are not left loose inside the computer. Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical shorts.

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

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

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

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

Safety notices

Introduction 3

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)

Safety notices

4 ThinkPad A22m wireless models

(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 ol’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.

Safety notices

Introduction 5

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 ol’esplosione della batteria stessa.

(continued)

Safety notices

6 ThinkPad A22m wireless models

(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 bateríano apropiada puede provocar la ignición o explosión de la misma.

Safety notices

Introduction 7

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)

Safety notices

8 ThinkPad A22m wireless models

(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 ol’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.

Safety notices

Introduction 9

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 algúnsíntoma del fluido despues de lavarse.

Safety notices

10 ThinkPad A22m wireless models

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.

Safety notices

Introduction 11

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.

Safety notices

12 ThinkPad A22m wireless models

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 bateríay,a continuación, desconecte cualquier cable de conexión entre dispositivos.

Safety notices

Introduction 13

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: v Observe good housekeeping in the area of the

machines during and after maintenance.

v When lifting any heavy object:

1. Ensure you can stand safely without slipping.

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

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

4. Lift by standing or by pushing up with your leg muscles; this action removes the strain from the muscles in your back. Do not attempt to lift any

objects that weigh 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.

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.

Safety information

14 ThinkPad A22m wireless models

Electrical safety

Observe the following rules when working on electrical equipment.

Important

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

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

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

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

v Do not work alone under hazardous conditions or near

equipment that has hazardous voltages.

v Disconnect all power before:

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

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

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

v If you need to work on a machine that has exposed

electrical circuits, observe the following precautions: – 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.

Safety information

Introduction 15

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

v Regularly inspect and maintain your electrical hand tools

for safe operational condition.

v Do not use worn or broken tools and testers. v Never assume that power has been disconnected from

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

v Always look carefully for possible hazards in your work

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

v Do not touch live electrical circuits with the reflective

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

v Do not service the following parts with the power on

when they are removed from their normal operating places in a machine:

– Power supply units – Pumps – Blowers and fans – Motor generators

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

v If 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.

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

Safety information

16 ThinkPad A22m wireless models

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 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.

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.

Safety information

Introduction 17

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.

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 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.

Safety information

18 ThinkPad A22m wireless models

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 ejecuciónde procedimientos distintos de los aquí especificados puede provocar la exposición a radiaciones peligrosas.

Laser compliance statement

Introduction 19

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.

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

Laser compliance statement

20 ThinkPad A22m wireless models

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!Nenézzen bele se szabad szemmel, se optikai eszközökkel. Kerülje a sugárnyalábbal valóérintkezést !

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

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

Laser compliance statement

Introduction 21

Laser compliance statement

22 ThinkPad A22m wireless models

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 __ 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.

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

have been subjected to excessive force, or dropped.

Read this first

24 ThinkPad A22m wireless models

Related service information

This section provides information about the following:

v “Service Web site” v “Product recovery program” v “Passwords” on page 27 v “Power management” on page 30

Service Web site

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

Product recovery program

Restoring the pre-installed software:

If the data on a hard-disk drive is damaged or accidentally erased, you can restore the software that was shipped with the computer. This software includes the pre-installed operating system, applications, and device drivers.

To restore the pre-installed software, you can use either the Product Recovery program or a Recovery CD.

The Product Recovery program is in the Service Partition, a section of the hard-disk drive that is not displayed by Windows Explorer. Use the Recovery CD if it was provided with the computer.

Note: The recovery process might take up to 2 hours. To use the Product Recovery program to restore the

pre-installed software, do the following:

1. Save all files and shut down the desktop.

2. Turn off the computer.

3. Turn on the computer. A message appears on the screen: “To start the Product Recovery program,

press F11”; or, for Windows XP models, “Press F11 to invoke the IBM Product Recovery program”. Press

F11 quickly; this message is displayed for only a few seconds.

Note: If this message does not appear, you can use a

Recovery Repair diskette to get access to the Product Recovery program. (Directions for making a Recovery Repair diskette are given in “To create a recovery repair diskette” on page 26.)

4. From the list displayed on the screen, select the operating system you want to recover.

5. Select the recovery options you want, and follow the instructions on the screen.

Related service information

General descriptions 25

Creating the service partition:

To create the Service Partition and install the preloaded system from the Recovery CD, do the following:

To create the Service Partition (SP):

1. Erase all partitions on the hard-disk drive, using FDISK or a similar application.

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

3. Following message appears: “Your computer

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

Note: If the hard-disk drive contains any partitions, you

do not receive this message ; go to step 1.

4. Enter Y. The Service Partition is created and loaded with the Product Recovery program files.

Note: If you do not want to create the Service

Partition, press N key, and then go to step 8.

5. At next window, press Enter to continue. v The Service Partition is created. The system

automatically reboots during this process.

v The recovery process copies some files to the

Service Partition and, PKUNZIPs others.

v Follow the prompts. You may be prompted to

change CDs.

v When the process is complete, the system reboots.

Continue to step 6 to install preloaded system.

Install preloaded system from CD:

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

7. If the hard-disk drive is blank, the following message appears: “Your computer originally included a

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

v To install the Service Partition, go to step 4. v To preload the hard-disk drive without installing the

Service Partition, press the N key.

8. If you get a message asking which operating system to install, highlight the proper operating system and press Enter.

9. A message appears: “Full Recovery:”. Press Enter to select.

10. Enter the Y at each of the next three windows.

11. Follow the prompts to complete Recovery.

To create a recovery repair diskette

If the prompt needed for access to the Product Recovery program does not appear, you can recover it by use of the

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26 ThinkPad A22m wireless models

Recovery Repair diskette. Make a Recovery Repair diskette and save it for future use. To make a Recovery Repair diskette:

1. Shut down and turn off the computer.

2. Attach the external diskette drive to the computer.

3. At the prompt, press F11. (The option to press F11 appears for only a few seconds. You must press F11 quickly.) The Product Recovery program main menu appears.

4. If you are using Windows 2000 Professional, you are prompted to select an operating system. This menu does not appear for Windows 98 SE.

5. From the main menu, select System Utilities. Press Enter.

6. Select Create a Recovery Repair diskette. Press Enter.

7. Follow the on-screen instructions.

8. When the process is completed, label the diskette as the Recovery Repair diskette and save it for future use.

To use the recovery repair diskette:

1. Shut down and turn off the computer.

2. Attach the external diskette drive to the computer.

3. Insert the Recovery Repair diskette into the drive; then turn on the computer.

4. Follow the on-screen instructions.

Note

Should the hard-disk drive need to be replaced, you must order a Recovery CD with the hard-disk drive so that you can recover the new hard-disk drive with the pre-installed software when it arrives. For information on which CD to order, see“Recovery CDs” on page 128.

Passwords

As many as three passwords may be needed for any ThinkPad computer: the power-on password (POP), the hard-disk password (HDP), and the supervisor password (SVP).

If any of these passwords have 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 doesn’t appear when the operating system is booted.

Related service information

General descriptions 27

Power-on password:

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

Hard-disk password:

There are two hard-disk passwords (HDPs):

v User HDP—for the user v Master HDP—for the system administrator, who can use

it to get access to the hard disk even if the user has changed the user HDP

Note: There are two modes for the HDP: User only and

Master + User. The Master + User mode requires

two HDPs; the system administrator enters both in the same operation. The system administrator then provides the user HDP to the system user.

Attention: If the user HDP has been forgotten, check whether a master HDP has been set. If it has, it can be used for access to the hard-disk drive. If no master HDP is available, 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:

A 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 be replaced for a scheduled fee.

How to remove the power-on password

To remove a POP that you have forgotten, do the following:

(A) If no SVP has been set:

1. Turn off the computer.

2. Remove the battery pack. For how to remove the battery pack, see “1010 Battery

pack” on page 58.

3. Remove the backup battery. For how to remove the backup battery, see “1040

Backup battery” on page 63.

4. Turn on the computer and wait until the POST ends.

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28 ThinkPad A22m wireless models

After the POST ends, the password prompt does not appear. The POP has been removed.

5. Reinstall the backup battery and the battery pack.

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

1. Turn on the computer by pressing and holding F1.

2. Enter the SVP. The IBM BIOS Setup Utility menu appears.

3. Select Password, using the cursor keys to move down the menu.

4. Select Power-On Password.

5. At the Enter Current Password field, enter the SVP.

6. When the Enter New Password field opens, leave it blank and press Enter twice.

7. In the Changes have been saved window, press Enter.

8. 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.

To remove a user HDP that has been forgotten, when the SVP and the master HDP are known, do the following:

1. Power on the computer by pressing and holding F1.

2. Enter the SVP. The IBM BIOS Setup Utility menu appears.

3. Select Password, using the cursor keys to move down the menu.

4. Select Hard-disk x password, where x is the letter of the hard-disk drive. A pop-up window opens.

5. Select Master HDP.

6. Enter the master HDP; then leave the New Password field blank and press Enter twice.

7. Press F10.

8. Select Yes in the Setup Configuration window. Both user HDP and master HDP will have been

removed.

Related service information

General descriptions 29

Power management

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

Notes

v Screen blank mode is called standby mode in

Windows 95 and Windows NT.

v Standby mode is called suspend mode in

Windows 95 and Windows NT.

Screen blank mode

Screen blank mode has three variants, as follows:

1. If you press Fn+F3, or the time set on the ″LCD off timer″ in IBM BIOS Setup Utility expires,

v The LCD backlight turns off. v The hard-disk drive motor stops. v The speaker is muted.

2. If you are using the ACPI operating system and you press Fn+F3,

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

3. If the time set on the “Turn off monitor” timer in the operating system expires, v The LCD backlight turns off.

To end screen blank mode and resume normal operation, press any key.

Standby mode

When the computer enters standby mode, the following events occur in addition to what occurs in screen blank mode:

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

To enter standby mode, press Fn+F4. Note: You can change the action of Fn+F4, if you are

using the ACPI operating system.

In certain circumstances, the computer goes into standby mode automatically: v If a “suspend time” has been set on the timer, and the

user does not do any operation with the keyboard, the TrackPoint, the hard disk, the parallel connector, or the diskette drive within that time.

v If the battery indicator blinks orange, indicating that the

battery power is low. (Alternatively, if Hibernate when

Related service information

30 ThinkPad A22m wireless models

battery becomes low has been selected in the “Power Management Properties” window, the computer goes into hibernation mode.)

Note for the APM operating system: Even if you don’t set the low-battery alarm, the charge indicator notifies you when the battery is low, and then the computer enters the power-saving mode automatically. This default low-battery behavior is independent of the operating system; so if you have set the low-battery alarm, the computer may not do what you specified. It chooses either your setting or the default setting, whichever is appropriate.

If you are using the ACPI operating system, only the low-battery alarm is available.

To cause the computer to return from standby mode and resume operation, do one of the following:

v Press the Fn key. v Open the LCD cover (only if you are using Windows

Me and you entered standby mode by closing the

LCD cover). v Turn on the power switch. Also, the computer automatically returns from standby mode and resumes operation in either of the following events: v The ring indicator (RI) is signaled by a serial device

or a PC Card device (Windows 2000 does not

support ring indicator (RI) resume by PC Card

device.) v The time set on the resume timer elapses. In

Windows 98, the Scheduled Tasks setting takes

priority over the Resume on timer selection in the

“Power Management Properties” window.

Note: The computer does not accept any input

immediately after it enters standby mode. Wait a few seconds before taking any action to reenter operation mode.

Hibernation mode

Note for Windows NT

If you are using Windows NT in the default format, NTFS, you cannot create a hibernation file. If you want to use hibernation mode, you will need to reinstall Windows NT with FAT format.

Related service information

General descriptions 31

Note for OS/2

If you are using OS/2 in the default format, HPFS, you cannot create a hibernation file. If you want to use hibernation mode, you will need to reinstall OS/2 with FAT format.

In hibernation mode, the following occurs: v The system status, RAM, VRAM, and setup data are

stored on the hard disk.

v The system is powered off.

Notes:

1. If you are using the APM operating system , v In the ThinkPad Configuration program, the

computer can be set to Suspend/hibernate while docked.

v If you are running the computer on ac power and

using a communication PC Card, the computer cannot enter hibernation mode.

2. If the computer enters the hibernation mode while it is docked to the docking station, do not undock it from the docking station before resuming normal operation. If you do undock it and then try to resume normal operation, you will get an error message, and you will have to restart the system.

To cause the computer to enter hibernation mode, do any of the following:

v Press the Fn+F12 keys. v If you are using the APM operating system and have set

the mode to Power switch mode [Hibernation], turn

off the power switch. Also, the computer automatically goes into hibernation mode in either of the following conditions: v If you are using an operating system other than

Windows 98 and the timer conditions are satisfied in

suspend mode. v If you are using the APM operating system and have set

the mode to Hibernate when battery becomes low,

and the battery charge becomes critically low. Note: If you are using the ACPI operating system, you can

define closing the lid, pressing the Power button and pressing Fn+F4 as events that cause the system to go into hibernation mode.

When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the hard-disk drive is read, and system status is restored from the hard-disk drive.

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32 ThinkPad A22m wireless models

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.

1. Identify the failing symptoms in as much detail as possible.

2. Verify the symptoms. Try to re-create the failure by running the diagnostic test or by repeating the operation.

Testing the computer

The ThinkPad computer has a test program called PC-Doctor®DOS (hereafter called PC-Doctor). You can detect errors by running the diagnostics test included in PC-Doctor. This section is an overview of the procedure. For details that depend on model-unique functions, refer to “Product overview” on page 41.

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.

Note: When you initialize the computer configuration,

some devices are disabled, such as the serial port. If you test one of these devices, you will need to enable it by using PS2.EXE.

PC-Doctor cannot be used to test a device that is in the docking station, even if the computer supports the docking station. To test a USB device, connect it to the USB connector of the computer. To test the Ultrabay 2000 device, install it in the Ultrabay 2000 slot of the computer.

To run the test, do as follows: Note: In the following procedure, you can select an item

not only with the arrow keys, but also with the TrackPoint. Instead of pressing Enter, click the left button.

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

If the computer cannot be powered on, go to “Power system checkout” on page 35, and check the power sources.

Checkout guide

General descriptions 33

If an error code appears, go to “Symptom-to-FRU index” on page 47.

On the first screen, select the model and press Enter. Follow the instructions on the screen.

2. The main panel of PC-Doctor appears.

3. Select Diagnostics with the arrow keys, and press Enter.

A pull-down menu appears. (Its exact form depends on the model.)

The options on the test menu are as follows:

Diagnostics Interactive Tests

v Run Normal Test v Run Quick Test v CPU/Coprocessor v Systemboard v Video Adapter v Serial Ports v Parallel Ports v Fixed Disks v Diskette Drives v Other Devices v ZIP Drive (*) v LS-120 Drive (*) v Communication v Memory Test – Full v Memory Test – Quick

v Keyboard v Video v Internal Speaker v Mouse v Joystick Test v Diskette v System Load v CD-ROM/DVD Test v Stereo Speaker

Notes:

v In the Keyboard test in Interactive Tests, the Fn key is

scanned only once. Each key should be held down for at least 2 seconds; otherwise, it cannot be sensed.

v The sound card is not recognized in the Stereo Speaker in the

Interactive Tests. To test it, use the audio device test in the Other Devices in the Diagnostics.

v Video Adapter test supports only the LCD display on

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

v To test ZIP Drive or LS-120 Drive, each media is needed to be

inserted before start testing.

Diagnostics

Quit

Interactive Tests

Hardware Info

Utility F1=Help

Run Quick Test

Run Normal Test

Systemboard

CPU/Coprocessor

Video Adapter Serial Ports

Diskette Drives

Fixed Disks

Parallel Ports

Other Devices ZIP Drive

Communication Memory Test - Full Memory Test - Quick

Use the cursor keys and ESC to move in menus. Press ENTER to select.

4. Run the applicable function test.

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34 ThinkPad A22m wireless models

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

6. To exit the test, select Quit — Exit Diag. To cancel the test, press Esc.

Note: After executing PC-Doctor, check the system

time/date and reset them if needed.

Detecting system information with PC-Doctor

PC-Doctor can detect the following system information:

Hardware Info

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

Utility

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

Power system checkout

To verify a symptom, do the following:

1. Power off the computer.

2. Remove the battery pack.

3. Connect the ac adapter.

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

5. Power off the computer.

6. Disconnect the ac adapter and install the charged battery pack.

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

If you suspect a power problem, see the appropriate one of the following power supply checkouts:

Checkout guide

General descriptions 35

v “Checking the ac adapter” v “Checking operational charging” v “Checking the battery pack” on page 37 v “Checking the backup battery” on page 37

Checking the ac adapter

You are here because the computer fails only when the ac adapter is used: v If the power problem occurs only when the port

replicator is used, replace the port replicator.

v If the power-on indicator does not turn on, check the

power cord of the ac adapter for correct continuity and installation.

v If the computer does not charge during operation, go to

″Checking operational charging.″

To check the ac adapter, do the following:

1. Unplug the ac adapter cable from the computer.

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

(16-10V)

Pin Voltage (V dc)

1 +15.5 to +17.0 2 Ground

3. If the voltage is not correct, replace the ac adapter.

4. If the voltage is acceptable, do the following:

v Replace the system board. v If the problem persists, go to “Product overview” on

page 41.

Note: Noise from the ac adapter does not always indicate

a defect.

Checking operational charging

To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.

Perform operational charging. If the battery status indicator or icon does not turn on, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon still does not turn on, replace the battery pack.

If the charge indicator still does not turn on, replace the system board. Then reinstall the battery pack. If it is still not charged, go to the next section.

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36 ThinkPad A22m wireless models

Checking the battery pack

Battery charging does not start until the Power Meter shows that less than 95% of the total power remains; under this condition the battery pack can charge to 100% of its capacity. This protects the battery pack from being overcharged or from having a shortened life.

To check the status of your battery, move your cursor to the Power Meter icon in the icon tray of the Windows taskbar and wait for a moment (but do not click), and the percentage of battery power remaining is displayed. To get detailed information about the battery, double-click the Power Meter icon.

Note: If the battery pack becomes hot, it may not be able

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

To check the battery pack, do the following:

1. Power off the computer.

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

5(-)

1(+)

Terminal Voltage (V dc)

1 + 0 to + 12.6 5 Ground (−)

3. If the voltage is less than +11.0 V dc, the battery pack has been discharged.

Note: Recharging will take at least 3 hours, even if the

indicator does not turn on.

If the voltage is still less than +11.0 V dc after recharging, replace the battery.

4. If the voltage is more than +11.0 V dc, measure the resistance between battery terminals 4 and 5. The resistance must be 4 to 30 K .

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

Checking the backup battery

Do the following:

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

2. Turn the computer upside down.

Checkout guide

General descriptions 37

3. Remove the battery pack (see “1010 Battery pack” on page 58 ).

4. Remove the backup battery (see “Checking the battery pack” on page 37).

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

Red (+)

Black (-)

Wire Voltage (V dc)

Red +2.5 to +3.2 Black Ground

v If the voltage is correct, replace the system board. v If the voltage is not correct, replace the backup battery. v If the backup battery discharges quickly after

replacement, replace the system board.

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38 ThinkPad A22m wireless models

ThinkPad A22m wireless models

Product overview ............41

Specifications ............41

Status indicators ...........42

FRU tests .............44

Fn key combinations ..........46

Symptom-to-FRU index ..........47

Numeric error codes ..........47

Error messages ...........50

Beep symptoms ...........51

No beep symptoms ..........51

LCD-related symptoms .........52

Intermittent problems ..........52

Undetermined problems .........53

FRU replacement notices .........54

Screw notices ............54

Retaining serial numbers.........55

Restoring the serial number of the system unit 55

Retaining the UUID .........55

Removing and replacing a FRU........57

1010 Battery pack...........58

1020 DIMM ............59

1030 Mini PCI adapter .........61

1040 Backup battery ..........63

1050 Hard-disk drive or RF ID adapter ....64

1060 Ultrabay 2000 device ........66

1070 Dummy card ..........68

1080 Keyboard ...........69

1090 Keyboard CRU insulator .......72

1100 Hinge cover and clear sheet icon ....73

1110 Keyboard bezel and speaker ......74

1120 Speaker cable ..........77

1130 Wireless PC Card and sub card .....78

1140 PC Card slot assembly .......87

1150 Fan assembly ..........89

1160 Diskette drive ..........91

1170 Upper shield...........93

1180 TV card ............94

1190 CPU socket and CPU ........95

1200 System board and RJ45/11 connector

assembly ............96

2010 LCD assembly ..........99

2020 Front bezel...........105

2030 Inverter card ..........106

2040 LCD panel ...........107

2050 Antenna assembly ........110

3010 ThinkPad Dock PCI cover ......112

3020 ThinkPad Dock top cover ......114

Locations ..............119

Front view.............119

Rear view.............120

Bottom view ............121

Parts list ..............122

Overall .............122

LCD FRUs ............126

14.1-in. XGA TFT .........126

Keyboard .............127

Recovery CDs ...........128

For Windows 98 ..........128

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

For Windows 2000/Windows NT .....129

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

Optional FRUs ...........131

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

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

Power cords (system) ........133

Power cords (docking station) ......134

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

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

40 ThinkPad A22m wireless models

Product overview

This section presents the following product-unique information:

v “Specifications” v “Status indicators” on page 42 v “FRU tests” on page 44 v “Fn key combinations” on page 46

Specifications

The following table lists the specifications of the ThinkPad A20m wireless models:

Feature Description

Processor v Intel

mobile Pentium®III processor

900 MHz featuring Intel

SpeedStep

™

technology

v Intel

mobile Pentium®III processor 1

GHz featuring Intel®SpeedStep

™

technology Bus architecture PCI Bus Memory (standard) v 64 MB (64 MB SO-DIMM × 1)

v 128 MB (128 MB SO-DIMM × 1)

Memory (optional) 64 MB, 128 MB, or 256 MB DIMM card

(maximum of 512 MB) CMOS RAM 114 bytes + 128 bytes Display 14.1-inch, 16M colors, XGA (1024×768

resolution) TFT color LCD Diskette drive 1.44 MB (3-mode), 3.5-inch Hard-disk drive v 10.0 GB, 2.5-inch, IDE interface

v 30.0 GB, 2.5-inch, IDE interface I/O port v External monitor

v Line-in

v Headphone

v Microphone

v Mouse or keyboard

v Parallel

v Port replicator connector

v Serial

v Universal serial bus (USB) connector

v RJ11

v RJ45

v TV-out

Internal modem 56.6 Kbps Audio v Internal stereo speaker

v Software control volume

(continued)

Product overview

ThinkPad A22m wireless models 41

Feature Description

Infrared transfer IrDA 1.1

802.11b IBM Internal High Rate Wireless LAN PC Card

PC Card One Type II AC adapter 72-watt type Bay device v 10-24 x CD-ROM drive

v 8 x DVD drive

Status indicators

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

54 6 7

Indicator Meaning 1 Battery Green: The battery is fully charged.

Blinking green:

The battery has enough power to operate, but is being charged.

Orange: The battery power is low. The battery

is to being charged.

Blinking orange:

The battery needs to be charged. when the indicator starts blinking orange, the computer beeps three times.

2 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. This indicator does not blink in Windows 2000 and Windows Me.

(continued)

Product overview

42 ThinkPad A22m wireless models

Indicator Meaning

3 Drive in

use

Green: Data is being read from or written to

the hard-disk drive, the diskette drive, or the drive in the Ultrabay 2000. When this indicator is on, do not put the computer into standby mode or turn off the computer.

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

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

is enabled. To enable or disable the keypad, press and hold the Shift key while pressing the NumLk key.

5 Caps lock Green: Caps Lock mode is enabled. To

enable or disable Caps Lock mode, press Caps Lock key.

6 Scroll lock Green: Scroll Lock mode is enabled. Arrow

keys can be used as screen-scroll function keys, but not to move the cursor. To enable or disable Scroll Lock mode, press ScrLk key. Not all application programs support this function.

7 Power on Green: This indicator stays lighted whenever

the computer is on. If the power-on indicator is on and the standby indicator is off, the system is ready to use. If both the power-on indicator and the standby indicator are on, you can use the computer after it returns from the standby mode and the standby indicator goes off.

Product overview

ThinkPad A22m wireless models 43

FRU tests

The following table shows the test for each FRU.

FRU Applicable test

System board 1. Diagnostics --> CPU/Coprocessor

2. Diagnostics --> Systemboard

Power Diagnostics --> Other Devices --> IBM AC

Adapter, IBM Battery 1 (IBM Battery 2)

LCD unit 1. Diagnostics --> Video Adapter

2. Interactive Tests --> Video

Modem 1. Make sure the modem is set up correctly.

2. Replace the modem jack and the modem card in turn, and run the following test in Diagnostics --> Communication: a. Lucent Modem (M2) Loopback b. Lucent Modem (M2) Dialtone/DTM c. Intel Modem Register d. Intel Modem Loopback/DTMF e. Intel SP Modem Register f. Intel SP Modem Loopback/DTMF g. 3Com MiniPCI Modem Test h. 3Com MiniPCI Dialtone Test

Audio 1. Interactive Tests --> Internal Speaker

2. Diagnostics --> Other Devices --> Crystal

SoundFusion

™

Test

Speaker Interactive Tests --> Internal Speaker PC Card slots Diagnostics --> Systemboard --> PCMCIA,

PCMCIA External Loop

Keyboard 1. Diagnostics --> Systemboard -->

Keyboard

2. Interactive Tests --> Keyboard

TrackPoint or pointing device

If the TrackPoint does not work, check the configuration in the ThinkPad Configuration program. If the TrackPoint is disabled, select Enable to enable it.

After you use the TrackPoint, the pointer may drift on the screen for a short time. This drift can occur when a slight, steady pressure is applied to the TrackPoint pointer. This symptom is not a hardware problem. If the pointer stops after a short time, no service action is necessary.

If enabling the TrackPoint does not correct the problem, continue with the following:

v Interactive Tests --> Mouse

Hard-disk drive Diagnostics --> Fixed Disks Diskette drive 1. Diagnostics --> Diskette Drives

2. Interactive Tests -->Diskette

(continued)

Product overview

44 ThinkPad A22m wireless models

FRU Applicable test

CD-ROM or DVD drive

1. Diagnostics --> Other Devices -->

CD-ROM/DVD

2. Interactive Tests --> CD-ROM/DVD Test

Memory 1. If two DIMMs are installed, remove one of

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

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

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

Fan 1. Turn on the computer and check the air

turbulence at the louver near the power switch.

2. Run Diagnostics --> Other Devices --> IBM Fan.

Product overview

ThinkPad A22m wireless models 45

Fn key combinations

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

The Fn key works independently from the operating system.

Key combination

Description

Fn+F1 Reserved. Fn+F2 Reserved. Fn+F3 Turn off the LCD display, leaving the screen

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

Fn+F4 Turn standby mode on. To return to normal

operation, press the Fn key independently,

without pressing a function key. Fn+F5 Reserved. Fn+F6 Reserved. Fn+F7 Switch between the LCD and an external monitor

(CRT). If an external monitor is attached,

computer output is displayed in the following

three patterns by turns:

v CRT display

v LCD + CRT display

v LCD

Fn+F8 Turn screen expansion on or off. (There is no

symbol on the key.) Fn+F9 Reserved. Fn+F10 Reserved. Fn+F11 Reserved. Fn+F12 Turn hibernation mode on. To return to normal

operation, press the power button for less than

four seconds. Fn+PgUp Turn the ThinkLight on or off. Fn+Home The LCD becomes brighter. Fn+End The LCD becomes less bright.

Product overview

46 ThinkPad A22m wireless models

Symptom-to-FRU index

The symptom-to-FRU index in this section lists symptoms and errors and their possible causes. The most likely cause is listed first, in boldface type.

Note: Do the FRU replacement or other actions in the

sequence shown in the column headed “FRU or action, in sequence.” If replacing a FRU does not solve the problem, put the original part back in the computer. Do not replace a nondefective FRU.

This index can also help you determine, during regular servicing, what FRUs are likely to need to be replaced next.

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

If no numeric code is displayed, check the narrative descriptions of symptoms. If the symptom is not described there, go to “Intermittent problems” on page 52.

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 FRU or action, in sequence 0175

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

System board.

0187

EAIA data access error — The access to EEPROM has failed.

System board.

0188

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

System board.

0189

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

System board.

(continued)

Symptom-to-FRU index

ThinkPad A22m wireless models 47

Symptom or error FRU or action, in sequence 0190

Critical low battery error.

1. Charge the battery pack.

2. Battery pack.

0193

RF antenna has been removed.

Enter the supervisor password.

0194

The computer has been carried through a security gate.

Enter the supervisor password.

0200

Hard disk error — The hard disk is not working.

1. Reseat the hard-disk drive.

2. Load Setup Defaults in IBM BIOS Setup Utility.

3. Hard-disk drive.

4. System board.

021x

Stuck key — Keyboard error.

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

0220

Monitor type error — Monitor type does not match the one specified in CMOS.

Load Setup Defaults in IBM BIOS Setup Utility.

0230

Shadow RAM error — The shadow RAM failure at offset nnnn.

System board.

0231

System RAM error — System RAM failure at offset nnnn.

1. DIMM.

2. System board.

0232

Extended RAM error — Extended RAM failure at offset nnnn.

1. DIMM.

2. System board.

0250

System battery error — System battery is dead.

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

0251

System CMOS checksum bad—Default configuration used.

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

0252

Password checksum bad — The password is cleared.

Reset the password by running IBM BIOS Setup Utility.

0260

System timer error.

1. Replace the backup

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

2. System board.

(continued)

Symptom-to-FRU index

48 ThinkPad A22m wireless models

Symptom or error FRU or action, in sequence 0270

Real-time clock error.

1. Replace the backup

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

2. System board.

0271

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

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

02B2

Incorrect drive A type.

1. Diskette drive.

2. External FDD cable.

3. I/O card.

02F4

EISA CMOS not writable.

1. Load Setup Defaults in IBM BIOS Setup Utility.

2. Replace the backup battery.

3. System board.

02F5

DIMM test failure.

1. DIMM.

2. System board.

02F6

Software NMI failure.

1. DIMM.

2. System board.

02F7

Fail-safe timer NMI failure.

1. DIMM.

2. System board.

Symptom-to-FRU index

ThinkPad A22m wireless models 49

Error messages

Symptom or error FRU or action, in sequence Device address conflict. 1. Load Setup Defaults in

IBM BIOS Setup Utility.

2. Backup battery.

3. System board.

Allocation error for device. 1. Load Setup Defaults in

IBM BIOS Setup Utility.

2. Backup battery.

3. System board.

Failing bits: nnnn. 1. DIMM.

2. System board.

Invalid system configuration data.

1. DIMM.

2. System board.

I/O device IRQ conflict. 1. Load Setup Defaults in

IBM BIOS Setup Utility.

2. Backup battery.

3. System board.

Operating system not found. 1. Check that the operating

system has no failure and is installed correctly.

2. Enter IBM BIOS Setup

Utility and see whether the hard-disk drive and the diskette drive are properly identified.

3. Reseat the hard-disk drive.

4. Reinstall the operating system.

5. Diskette drive.

6. Hard-disk drive.

7. System board.

Hibernation error. 1. Restore the system

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

2. If memory size has been changed, re-create the hibernation file.

Fan error. Fan.

Symptom-to-FRU index

50 ThinkPad A22m wireless models

Beep symptoms

Symptom or error FRU or action, in sequence

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

1. Reseat the LCD connector.

2. LCD assembly.

3. External CRT.

4. System board.

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

1. System board.

2. LCD assembly.

3. DIMM.

Two short beeps with error codes.

POST error. See “Numeric error codes” on page 47.

Two short beeps with blank screen.

1. System board.

2. DIMM.

Two or more beeps, or a continuous beep. Operating System starts successfully.

If a mini-PCI Ethernet card is installed, confirm that Alert On LAN 2 in IBM BIOS Setup Utility is disabled.

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

1. DIMM.

2. System board

Only cursor appears. Reinstall operating system.

No beep symptoms

Symptom or error FRU or action, in sequence

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

1. Make sure that every

connector is connected tightly and correctly.

2. DIMM.

3. System board.

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

1. Reseat DIMM.

2. System board.

The power-on password prompt.

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

The hard-disk password prompt.

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

The DOS full screen looks smaller.

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

Symptom-to-FRU index

ThinkPad A22m wireless models 51

LCD-related symptoms

Important

The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). A small number of dots that are missing, discolored, or always lighted is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns. The LCD should be replaced if the number of missing, discolored, or lighted dots in any background is: v XGA: 8 or more bright dots, 8 or more dark dots,

or a total of 9 or more bright and dark dots.

Note: Bright dots means pixel is always on (white

or color.) Dark dots means pixel is always off (black color.)

Symptom or error FRU or action, in sequence

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

System board.

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

adjusted.

v LCD contrast cannot be

adjusted.

1. Reseat the LCD connectors.

2. LCD assembly.

3. System board.

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

1. See important note for

“LCD-related symptoms”.

2. Reseat all LCD connectors.

3. LCD assembly.

4. System board.

Horizontal or vertical lines displayed on LCD.

LCD assembly.

Intermittent problems

Intermittent system hang problems can be due to a variety of causes that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a problem recurs.

When analyzing an intermittent problem, do the following:

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

2. If no error is detected, do not replace any FRUs.

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

Symptom-to-FRU index

52 ThinkPad A22m wireless models

Undetermined problems

You are here because the diagnostic tests did not identify which adapter or device failed, wrong devices are installed, a 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 35.)

1. Power off the computer.

2. Visually check each FRU for damage. Replace any damaged FRU.

3. Remove or disconnect all of the following devices: a. Non-IBM devices b. Devices attached to the port replicator c. Printer, mouse, and other external devices d. Battery pack e. Hard-disk drive f. External diskette drive g. DIMM h. Ultrabay 2000 device i. PC Cards

4. Power on the computer.

5. Determine whether the problem has changed.

6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.

7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU): a. System board b. LCD assembly

Symptom-to-FRU index

ThinkPad A22m wireless models 53

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

v They maintain tight connections. v They do not easily come loose, even with shock or

vibration.

v They are harder to tighten. v They should be used only once.

Do the following when you service this machine: v Keep the screw kit (for the P/N, see “Miscellaneous

parts” on page 130) in your tool bag.

v Always use new screws. v Use a torque screwdriver if you have one.

Tighten screws as follows:

v Plastic to plastic

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

90 degrees more

(Cross-section)

v Logic card to plastic

Turn an additional 180 degrees after the screw head touches the surface of the logic card:

180 degrees more

(Cross-section)

v Torque driver

If you have a torque driver, refer to the “Torque” column for each step.

FRU replacement notices

54 ThinkPad A22m wireless models

v 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:

v “Restoring the serial number of the system unit” v “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.

If you replace the system board, you must restore the serial number of the system unit to its original value.

Before replacing the system board, save the original serial number by doing the following:

1. Install the ThinkPad hardware maintenance diskette version 1.61, and restart the computer.

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

3. Select 2. Read S/N data from EEPROM.

The serial number 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:

1. Install the ThinkPad hardware maintenance diskette version 1.61 and restart the computer.

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

3. Select 1. Add S/N data from EEPROM. Follow the instructions on the screen.

Note: The serial number of the system unit is written on

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 and stored in the EEPROM of your system board. The algorithm that generates the number is designed to provide

FRU replacement notices

ThinkPad A22m wireless models 55

unique IDs until the year A.D. 3400. No two computers in the world have the same number.

When you replace the system board, you must set the UUID on the new system board as follows:

1. Install the ThinkPad hardware maintenance diskette version 1.61, and restart the computer.

2. From the main menu, select 4. Assign UUID. A new UUID is created and written. If a valid UUID

already exists, it is not overwritten.

FRU replacement notices

56 ThinkPad A22m wireless models

Removing and replacing a FRU

This section presents directions and drawings for use in removing and replacing a FRU. Be sure to observe the following general rules:

1. Do not try to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts.

2. Before replacing any FRU, review “FRU replacement notices” on page 54.

3. Begin by removing any FRUs that have to be removed before the failing FRU. Any such FRUs are listed at the top of the page. Remove them in the order in which they are listed.

4. Follow the correct sequence in the steps for removing the FRU, as indicated in the drawings by the numbers in square callouts.

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

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

7. To put the new FRU in place, reverse the removal procedure and follow any notes that pertain to replacement. For information about connecting and arranging internal cables, see “Locations” on page 119.

8. 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).

Removing and replacing a FRU

ThinkPad A22m wireless models 57

1010 Battery pack

DANGER

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

Removing and replacing a FRU

58 ThinkPad A22m wireless models

1020 DIMM

For access, remove this FRU: v “1010 Battery pack” on page 58

Note: Loosen the screw 1, but do not remove it.

(continued)

Removing and replacing a FRU

ThinkPad A22m wireless models 59

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.

Removing and replacing a FRU

60 ThinkPad A22m wireless models

1030 Mini PCI adapter

For access, remove this FRU: v “1010 Battery pack” on page 58

Note: Loosen the screw 1, but do not remove it.

(continued)

Removing and replacing a FRU

ThinkPad A22m wireless models 61

(A)

(B)

Note: The illustration shows the combo card. Connector

(A) is for the LAN feature and (B) is for the modem

feature. This slot also supports a Mini PCI modem card or a Mini PCI network card. Step 4 depends on the card type. Disconnect either (A), (B), or both.

When installing: With the notched end of the card toward

the socket, insert the card into the socket, and then press it firmly. Pivot the card until it snaps into place. Make sure that the card is firmly fixed in the slot and does not move easily.

Removing and replacing a FRU

62 ThinkPad A22m wireless models

1040 Backup battery

DANGER

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

For access, remove these FRUs, in order:

v “1010 Battery pack” on page 58 v “1020 DIMM” on page 59 v “1030 Mini PCI adapter” on page 61

Removing and replacing a FRU

ThinkPad A22m wireless models 63

1050 Hard-disk drive or RF ID adapter

Attention

Do not drop or apply any shock to the hard-disk drive. The hard-disk drive is sensitive to physical

shock. Incorrect 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: v “1010 Battery pack” on page 58

Note: The hard disk is attached to the cover.

Step Screw (quantity)

1 Coin screw (1) or security screw (1)

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

Removing and replacing a FRU

64 ThinkPad A22m wireless models

When installing: Make sure that the hard-disk drive

connector is firmly seated.

Removing and replacing a FRU

ThinkPad A22m wireless models 65

1060 Ultrabay 2000 device

Any of several devices can be inserted into the Ultrabay

2000. The procedure for installing and removing is the same for every device.

Note: When you release the switch in step 1, the lever

pops out. Pull the lever a little in step 2 to release the device from the bay.

(continued)

Removing and replacing a FRU

66 ThinkPad A22m wireless models

Removing and replacing a FRU

ThinkPad A22m wireless models 67

1070 Dummy card

Push the release button once, then the release button pops out.

Push the release button again into the slot, then the dummy card pops out.

Removing and replacing a FRU

68 ThinkPad A22m wireless models

1080 Keyboard

For access, remove these FRUs, in order:

v “1010 Battery pack” on page 58 v “1050 Hard-disk drive or RF ID adapter” on page 64 v “1060 Ultrabay 2000 device” on page 66

Step Screw (quantity) Torque

1 M2.5 × 15 mm, nylon-coated (3) 0.392 Nm

(4 kgfcm)

(continued)

Removing and replacing a FRU

ThinkPad A22m wireless models 69

(continued)

Removing and replacing a FRU

70 ThinkPad A22m wireless models

When installing: When installing the keyboard, do as

follows:

1. Make sure that the keyboard edges, shown as (A), (B), and (C) in the figure, are under the frame.

(A)

(C)

(B)

2. Press the Y key 1 to connect the keyboard to the connector on the underside of the key; then press the frame of the keyboard 2 to latch the latches.

3. After fastening the three screws of bottom side, press the Y key again to connect the keyboard firmly to the connector under that key.

Removing and replacing a FRU

ThinkPad A22m wireless models 71

1090 Keyboard CRU insulator

For access, remove these FRUs, in order:

v “1010 Battery pack” on page 58 v “1050 Hard-disk drive or RF ID adapter” on page 64 v “1060 Ultrabay 2000 device” on page 66 v “1080 Keyboard” on page 69

Removing and replacing a FRU

72 ThinkPad A22m wireless models

1100 Hinge cover and clear sheet icon

For access, remove these FRUs, in order:

Step Screw (quantity) Torque

1 M2.5 × 15 mm, nylon-coated (1) 0.392 Nm

(4 kgfcm)

When installing: Stick the new clear sheet icon onto the

new hinge cover and then attach the hinge cover to the computer.

Removing and replacing a FRU

ThinkPad A22m wireless models 73

1110 Keyboard bezel and speaker

For access, remove these FRUs, in order:

v “1010 Battery pack” on page 58 v “1050 Hard-disk drive or RF ID adapter” on page 64 v “1060 Ultrabay 2000 device” on page 66 v “1080 Keyboard” on page 69 v “1090 Keyboard CRU insulator” on page 72 v “1100 Hinge cover and clear sheet icon” on page 73

Step Screw (quantity) Torque

1 M2.5 × 4.8 mm, nylon-coated (5) 0.392 Nm

(4 kgfcm)

(continued)

Removing and replacing a FRU

74 ThinkPad A22m wireless models

Step Screw (quantity) Torque

2 M2.5 × 15 mm, nylon-coated (2) 0.392 Nm

(4 kgfcm)

Cable routing: When replacing the cable, see the figure

for its routing.

Removing and replacing a FRU

ThinkPad A22m wireless models 75

When installing: When attaching the keyboard bezel onto

the unit, do as shown in the following figure.

Removing and replacing a FRU

76 ThinkPad A22m wireless models

1120 Speaker cable

For access, remove these FRUs, in order:

When installing: Make sure that you fasten the connector

firmly.

Removing and replacing a FRU

ThinkPad A22m wireless models 77

1130 Wireless PC Card and sub card

For access, remove these FRUs, in order:

Strip off the two insulation tapes (1) that secure the cable.

(continued)

Removing and replacing a FRU

78 ThinkPad A22m wireless models

Note: When unplugging the antenna jack from the

wireless PC Card, do not pull the cable; it might snap. Unplug the jack by grapping it with your fingers.

Pull the wireless PC Card out with your fingers.

(continued)

Removing and replacing a FRU

ThinkPad A22m wireless models 79

If you cannot pull the card out with your fingers, do as follows:

1. Push the release button for the upper slot once a, using a tapering stick; then the release button pops out.

(continued)

Removing and replacing a FRU

80 ThinkPad A22m wireless models

2. Push the release button of the upper slot again b; the wireless PC Card pops out 3a.

Note: After removing the wireless PC Card, be sure to

push the release button back into the slot.

Removing and replacing a FRU

ThinkPad A22m wireless models 81

Step Screw (quantity) Torque

4 M2.6 × 2.8 mm, nylon-coated (2) 0.392 Nm

(4 kgfcm)

(continued)

Removing and replacing a FRU

82 ThinkPad A22m wireless models

Step Screw (quantity) Torque

7 M2.5 × 4.8 mm, nylon-coated (1) 0.392 Nm

(4 kgfcm)

Removing and replacing a FRU

ThinkPad A22m wireless models 83

When installing:

1. Install the sub card. Make sure that both of the connectors (steps 6 and 8 in the removal procedure) are firmly attached.

2. Insert the wireless PC Card into the upper slot of the PC Card slot. Make sure that the label on the wireless PC Card faces the bottom side of the computer and that the card is firmly attached.

3. Plug the black antenna cable into jack a (AUX), and the gray antenna cable into jack b (MAIN).

(continued)

Removing and replacing a FRU

84 ThinkPad A22m wireless models

4. Secure the black cable with insulation tape as follows:

Notes:

a. Make sure that the cable does not jut out from the

edge of the wireless PC Card as shown in A in the figure. Route the cable as shown in the left figure above.

b. Route the cable along the edge of the PC Card slot

as shown in the left figure above. Do not secure the cable separately from the edge of the PC Card slot as shown in B in the figure.

Removing and replacing a FRU

ThinkPad A22m wireless models 85

5. Route the cables as follows: a. Route the black cable and the gray cable one

through the cable guide.

b. Route the cables along the edge of the upper

shield and secure them with the insulation tape a.

c. Route the cable under LCD flexible cable (A) and

alongside the LCD. (b)

d. Route the cable between the fan assembly and the

sub card. (c)

e. Route the cable between the system board and the

stiffener. Only at this point can any extra bend of the cables be allowed. (d)

(A)

Note: Make sure that the cable is not on the sub card

in e-part in the figure.

6. Attach the flexible cable to the sub card and tighten the screws.

Removing and replacing a FRU

86 ThinkPad A22m wireless models

1140 PC Card slot assembly

For access, remove these FRUs, in order:

Step Screw (quantity) Torque

1 M2.0 × 9.5 mm, nylon-coated (2) 0.245 Nm

(2.5 kgfcm)

Removing and replacing a FRU

ThinkPad A22m wireless models 87

When installing:

Before installing the new PC card slot assembly, do the following.

1. Pull the release button cover of the upper slot out with your fingers as shown in the figure below.

2. Push both of the upper and the lower release buttons into each slot.

Removing and replacing a FRU

88 ThinkPad A22m wireless models

1150 Fan assembly

For access, remove these FRUs, in order:

Step Screw (quantity) Torque

1 M2.5 × 4.8 mm, nylon-coated (1) 0.392 Nm

(4 kgfcm)

(continued)

Removing and replacing a FRU

ThinkPad A22m wireless models 89

Step Screw (quantity) Torque

2 M2.5 × 4.8 mm, nylon-coated (5) 0.392 Nm

(4 kgfcm)

When installing: Apply thermal grease on the a-part of

the fan assembly as in this figure.

Removing and replacing a FRU

90 ThinkPad A22m wireless models

1160 Diskette drive

For access, remove these FRUs, in order:

Step Screw (quantity) Torque

1 M2.5 × 4.8 mm, nylon-coated (1) 0.392 Nm

(4 kgfcm)

Step Screw (quantity) Torque

2 M2.5 × 4.8 mm, nylon-coated (3) 0.392 Nm

(4 kgfcm)

(continued)

Removing and replacing a FRU

ThinkPad A22m wireless models 91

Step Screw (quantity) Torque

3 M2.5 × 4.8 mm, nylon-coated (2) 0.392 Nm

(4 kgfcm)

4 M2.5 × 15 mm, nylon-coated (2) 0.392 Nm

(4 kgfcm)

When installing: Do not press the part of the diskette

drive marked a. To do so could damage the drive.

Removing and replacing a FRU

92 ThinkPad A22m wireless models

1170 Upper shield

For access, remove these FRUs, in order:

v “1010 Battery pack” on page 58 v “1050 Hard-disk drive or RF ID adapter” on page 64 v “1060 Ultrabay 2000 device” on page 66 v “1070 Dummy card” on page 68 v “1080 Keyboard” on page 69 v “1090 Keyboard CRU insulator” on page 72 v “1100 Hinge cover and clear sheet icon” on page 73 v “1110 Keyboard bezel and speaker” on page 74 v “1120 Speaker cable” on page 77 v “1130 Wireless PC Card and sub card” on page 78 v “1140 PC Card slot assembly” on page 87 v “1150 Fan assembly” on page 89 v “1160 Diskette drive” on page 91

Step Screw (quantity) Torque

1 M2.5 × 15 mm, nylon-coated (2) 0.392 Nm

(4 kgfcm)

2 M2.5 × 4.8 mm, nylon-coated (2) 0.392 Nm

(4 kgfcm)

Removing and replacing a FRU

ThinkPad A22m wireless models 93

1180 TV card

For access, remove these FRUs, in order:

Cable routing: When reinstalling the modem cable, route

it as in this figure.

Removing and replacing a FRU

94 ThinkPad A22m wireless models

1190 CPU socket and CPU

For access, remove these FRUs, in order:

v “1010 Battery pack” on page 58 v “1020 DIMM” on page 59 v “1050 Hard-disk drive or RF ID adapter” on page 64 v “1060 Ultrabay 2000 device” on page 66 v “1070 Dummy card” on page 68 v “1080 Keyboard” on page 69 v “1090 Keyboard CRU insulator” on page 72 v “1100 Hinge cover and clear sheet icon” on page 73 v “1110 Keyboard bezel and speaker” on page 74 v “1120 Speaker cable” on page 77 v “1130 Wireless PC Card and sub card” on page 78 v “1140 PC Card slot assembly” on page 87 v “1150 Fan assembly” on page 89 v “1160 Diskette drive” on page 91 v “1170 Upper shield” on page 93

Rotate the screw head (A) 180° in the direction of the arrow a to release the lock; then remove the CPU.

Step Screw (quantity) Torque

1 M2.5 × 15 mm, nylon-coated (3) 0.392 Nm

(4 kgfcm)

When installing the CPU, do as shown in the figure. v Rotate the screw head (A) 180° in the direction of the

arrow b to lock the CPU.

v When attaching the CPU to the socket, do as shown in

step c.

Removing and replacing a FRU

ThinkPad A22m wireless models 95

1200 System board and RJ45/11 connector assembly

For access, remove these FRUs, in order:

v “1010 Battery pack” on page 58 v “1020 DIMM” on page 59 v “1030 Mini PCI adapter” on page 61 v “1040 Backup battery” on page 63 v “1050 Hard-disk drive or RF ID adapter” on page 64 v “1060 Ultrabay 2000 device” on page 66 v “1070 Dummy card” on page 68 v “1080 Keyboard” on page 69 v “1090 Keyboard CRU insulator” on page 72 v “1100 Hinge cover and clear sheet icon” on page 73 v “1110 Keyboard bezel and speaker” on page 74 v “1120 Speaker cable” on page 77 v “1130 Wireless PC Card and sub card” on page 78 v “1140 PC Card slot assembly” on page 87 v “1150 Fan assembly” on page 89 v “1160 Diskette drive” on page 91 v “1170 Upper shield” on page 93 v “1180 TV card” on page 94 v “1190 CPU socket and CPU” on page 95

Step Screw (quantity) Torque

1 M2.5 × 4.8 mm, nylon-coated (2) 0.392 Nm

(4 kgfcm)

(continued)

Removing and replacing a FRU

96 ThinkPad A22m wireless models

IBM ThinkPad A22m 2628, ThinkPad A20m, ThinkPad A21m, ThinkPad Dock, MT 2628 Hardware Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual