IBM ThinkPad MT 1829, ThinkPad MT 1830, ThinkPad MT 1831, ThinkPad MT 1832, ThinkPad MT 1833 Hardware Maintenance Manual

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IBM Mobile Systems ThinkPad

Computer

Hardware Maintenance Manual

November 2004

This manual supports:

ThinkPad R50/R50p, R51 series

ThinkPad Dock II (MT 2877)

(MT 1829, 1830, 1831, 1832, 1833,

2889, 2894, 2895)

1836, 1840, 1841, 2883, 2887, 2888,



Note

Before using this information and the product it supports, be sure to read the general information under “Notices” on page 272.

Second Edition (November 2004)

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

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

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

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

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

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

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

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

Safety notices: multilingual translations . . . . . .4

Safety information . . . . . . . . . . . .16

General safety . . . . . . . . . . . .16

Electrical safety . . . . . . . . . . .17

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

Handling devices that are sensitive to electrostatic

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

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

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

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

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

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

Related service information . . . . . . . . .27

Service web site . . . . . . . . . . .27

Restoring the pre-installed system . . . . . .27

Passwords . . . . . . . . . . . . .28

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

Checkout guide . . . . . . . . . . . .34

Testing the computer . . . . . . . . . .34

Detecting system information with PC-Doctor . . .37

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

ThinkPad R50/R50p and R51 Series . . . . . .41

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

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

Status indicators . . . . . . . . . . .48

FRU tests . . . . . . . . . . . . .50

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

Symptom-to-FRU index . . . . . . . . . .54

Numeric error codes . . . . . . . . . .54

Error messages . . . . . . . . . . .59

Beep symptoms . . . . . . . . . . .60

No-beep symptoms . . . . . . . . . .60

LCD-related symptoms . . . . . . . . .61

Intermittent problems . . . . . . . . . .62

Undetermined problems . . . . . . . . .62

FRU replacement notices . . . . . . . . .63

Screw notices . . . . . . . . . . . .63

Retaining serial numbers . . . . . . . . .64

Removing and replacing a FRU . . . . . . . .67

1010 Battery pack . . . . . . . . . . .68

1020 Ultrabay Enhanced device . . . . . .69

1030 Hard disk drive . . . . . . . . . .70

1040 DIMM (optional) . . . . . . . . .72

1050 Keyboard . . . . . . . . . . .73

1060 DIMM (standard) . . . . . . . . .77

1070 Modem daughter card (MDC/MDC-2) . . .78 1080 Bluetooth/Modem daughter card

(BMDC/BMDC-2) . . . . . . . . . .80

1090 Keyboard bezel . . . . . . . . . .82

1100 Mini PCI adapter . . . . . . . . .86

1110 Fan assembly . . . . . . . . . .90

1120 CPU . . . . . . . . . . . . .91

1130 Backup battery . . . . . . . . . .92

1140 Speaker assembly . . . . . . . . .93

1150 IEEE 1394 cable . . . . . . . . .95

1160 PC Card slots assembly . . . . . . .98

1170 Ultrabay Enhanced shield kit . . . . . 100

1180 LCD assembly . . . . . . . . . . 107

1190 VGA and Ultrabay Enhanced device eject

button cable . . . . . . . . . . . 111

1200 System board, interposer card, and base

cover . . . . . . . . . . . . .114

2010 LCD front bezel . . . . . . . . . 121

2020 Inverter card . . . . . . . . . . 123

2030 LCD panel, LCD cable assembly, wireless

LAN antenna assembly, hinges, and LCD cover . 124

3010 ThinkPad Dock II PCI cover . . . . . . 134

3020 ThinkPad Dock II top cover . . . . . . 135

Locations . . . . . . . . . . . . . . 138

Front view . . . . . . . . . . . . 138

Rear view . . . . . . . . . . . . . 140

Bottom view . . . . . . . . . . . . 141

Parts list . . . . . . . . . . . . . . 142

R50/R50p and R51 series model matrix . . . . 142

Overall . . . . . . . . . . . . . 189

LCD FRUs . . . . . . . . . . . . 236

AC adapters . . . . . . . . . . . . 254

Keyboard . . . . . . . . . . . . . 255

Recovery CDs . . . . . . . . . . . 257

Miscellaneous parts . . . . . . . . . . 265

Optional FRUs . . . . . . . . . . . 269

Common parts list . . . . . . . . . . 270

Notices . . . . . . . . . . . . . . 272

Trademarks . . . . . . . . . . . . 272

iv R50/R50p, R51 Series

About this manual

This manual contains service and reference information for IBM ThinkPad R50/R50p and R51 series (MT1829, 1830, 1831, 1832, 1833, 1836, 1840, 1841, 2883, 2887, 2888, 2889, 2894, 2895), and ThinkPad Dock II (MT2877) products. Use this manual along with the advanced diagnostic tests to troubleshoot problems.

The manual is divided into sections as follows:

v The common sections provide general information,

guidelines, and safety information required in servicing computers.

v The product-specific section includes service, reference,

and product-specific parts information.

Important

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

Before servicing an IBM ThinkPad product, be sure to review the safety information under “Safety notices: multilingual translations” on page 4, “Safety information” on page 16, and “Laser compliance statement” on page 22.

2 R50/R50p, R51 Series

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 IBM Support Center at 800-426-7378 (800-IBM-Serv) if they need assistance in obtaining or installing any diskette fixes.

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

Strategy for replacing FRUs

Before replacing parts

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

Use the following strategy to prevent unnecessary expense

for replacing and servicing FRUs:

v If you are instructed to replace a FRU but the

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

v Some computers have both a processor board and a

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

v If an adapter or a 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 whether the error symptom is listed in the Symptom-to-FRU Index for the computer you are servicing.

Diskette compatibility matrix

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

Diskette

drive

Diskette capacity

Compatibility

3.5-inch 1.0 MB Read and write

2.0 MB Read and write

4.0 MB Not compatible

Safety notices: multilingual translations

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

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

Important service information

4 R50/R50p, R51 Series

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 5

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

6 R50/R50p, R51 Series

(continuation of safety notice 2)

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

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

Safety notices

Introduction 7

Safety notice 3

DANGER

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

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

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

(continued)

Safety notices

8 R50/R50p, R51 Series

(continuation of safety notice 3)

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

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

Safety notices

Introduction 9

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

10 R50/R50p, R51 Series

(continuation of safety notice 4)

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

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

Safety notices

Introduction 11

Safety notice 5

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

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

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

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

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

Safety notices

12 R50/R50p, R51 Series

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 13

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

14 R50/R50p, R51 Series

Safety notice 8

DANGER

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

Avant de retirer une unité remplaçable en clientèle, mettez le système hors tension, débranchez tous les cordons d’alimentation des socles de prise de courant, retirez la batterie et déconnectez tous les cordons d’interface.

Die Stromzufuhr muß abgeschaltet, alle Stromkabel aus der Steckdose gezogen, der Akku entfernt und alle Verbindungskabel abgenommen sein, bevor eine FRU entfernt wird.

Prima di rimuovere qualsiasi FRU, spegnere il sistema, scollegare dalle prese elettriche tutti i cavi di alimentazione, rimuovere la batteria e poi scollegare i cavi di interconnessione.

Antes de quitar una FRU, apague el sistema, desenchufe todos los cables de las tomas de corriente eléctrica, quite la batería y, a continuación, desconecte cualquier cable de conexión entre dispositivos.

Safety notices

Introduction 15

Safety information

The following section presents safety information with which you need to be familiar before you service 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. Make sure that you can stand safely without slipping.

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

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

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

object that weighs more than 16 kg (35 lb) or that you think is 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, make sure 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, about 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.

Safety information

16 R50/R50p, R51 Series

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

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

v Reinstall all covers correctly before returning the

machine to the customer.

v Fan louvers on the machine help to prevent overheating

of internal components. Do not obstruct fan louvers or cover them with labels or stickers.

WARNING

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

handling.

Electrical safety

Observe the following rules when working on electrical equipment.

Important

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

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

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

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

v Do not work alone under hazardous conditions or near

equipment that has hazardous voltages.

v Disconnect all power before:

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

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:

Safety information

Introduction 17

– Ensure that another person, familiar with the

power-off controls, is near you.

Attention: Another person must be there to switch

off the power, if necessary.

– Use only one hand when working with powered-on

electrical equipment; keep the other hand in your pocket or behind your back.

Attention: An electrical shock can occur only when

there is a complete circuit. By observing the above rule, you may prevent a current from passing through your body.

– When using testers, set the controls correctly and

use the approved probe leads and accessories for that tester.

– Stand on suitable rubber mats (obtained locally, if

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

Observe the special safety precautions when you work with very high voltages; Instructions for these precautions 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 information

18 R50/R50p, R51 Series

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

v Mechanical hazards, such as loose or missing hardware

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 the frame ground.

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

parts list.

c. Insulation must not be frayed or worn.

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.

Safety information

Introduction 19

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

Handling devices that are sensitive to electrostatic discharge

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

Notes

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

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

When handling ESD-sensitive parts:

v Keep the parts in protective packages until they are

inserted into the product.

v Avoid contact with other people.

v Wear a grounded wrist strap against your skin to

eliminate static on your body.

v Prevent the part from touching your clothing. Most

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

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

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

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

to provide protection that meets the specific service requirement.

Note

The use of a grounding system to guard against ESD damage is desirable but not necessary.

– Attach the ESD ground clip to any frame ground,

ground braid, or green-wire ground.

– When working on a double-insulated or

battery-operated system, use an ESD common ground or reference point. You can use coax or connector-outside shells on these systems.

Safety information

20 R50/R50p, R51 Series

– 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.

Safety information

Introduction 21

Laser compliance statement

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

Laser compliance statement

22 R50/R50p, R51 Series

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

CAUTION:

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

Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure.

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

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

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

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

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

Laser compliance statement

Introduction 23

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

DANGER

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

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

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

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

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

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

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

Laser compliance statement

24 R50/R50p, R51 Series

General descriptions

The desciptions in this chapter apply to 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 Before replacing any FRU, read the entire

page on removing and replacing FRUs.

v When you replace FRUs, use new

nylon-coated screws.

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 an FRU only with another FRU of the

correct model. When you replace a FRU, make

sure that 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. Following is a list of 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 list:

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 Plastic parts, latches, pins, or connectors that have

been cracked or broken 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 Diskette drive damage caused by pressure on the

diskette drive cover, foreign material in the drive, or 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

26 R50/R50p, R51 Series

Related service information

This section provides information about the following:

v “Service web site” v “Restoring the pre-installed system” v “Passwords” on page 28 v “Power management” on page 32

Service web site

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

Restoring the pre-installed system

When the hard disk drive is replaced because of a failure, no Product Recovery program is on the new hard disk. In this case, you must use the recovery CD for the computer. Order the recovery CD and the hard disk drive at the same time so that you can recover the new hard disk drive with the pre-installed software when they arrive. For information on which CD to order, see “Recovery CDs” on page 257

Recovery to Factory Contents by using Product Recovery CDs

To create the service partition and install the factory contents from the recovery CD, do the following:

Note

The recovery process might take up to 2 hours.

1. Insert the recovery CD into the CD or DVD drive, then restart the computer.

2. Following message is displayed: “Your computer

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

3. Press Y key. The service partition is created and loaded with the Product Recovery program files.

4. 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.

Related service information

General descriptions 27

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

6. A message is displayed: “Full Recovery:”. Press Enter to select.

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

8. Follow the prompts to complete the recovery.

Passwords

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

If any of these passwords has been set, a prompt for it appears on the screen whenever the computer is turned on. The computer does not start until the password is entered.

Exception: If only an SVP is installed, the password

prompt does not appear when the operating system is booted.

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

Related service information

28 R50/R50p, R51 Series

information stored in the IBM BIOS Setup Utility. The user must enter the SVP in order to get access to the IBM BIOS Setup Utility and change the system configuration.

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 68.

3. Remove the backup battery.

For how to remove the backup battery, see “1130 Backup battery” on page 92.

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

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

5. Reinstall the backup battery and the battery pack.

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

For R50/R50p:

1. Turn on the computer and watch the lower left of the screen for a message saying, “To interrupt normal startup, press the blue Access IBM button.” When that message appears, press the Access IBM button.

2. Enter the SVP. Double-click Start setup utility.

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

4. Select Password.

5. Select Power-On Password.

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

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

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

9. Press F10; then, in the Setup confirmation window, select Yes.

For R51/R51p:

1. Turn on the computer; then, while the “To interrupt normal startup, press the blue Access IBM button”

Related service information

General descriptions 29

message is displayed at the lower-left of the screen, press the Access IBM button. IBM Rescue and Recovery screen opens.

For models supporting the Passphrase function, press F1 while POP icon is appearing on the screen; then enter the POP. For the other models, enter the POP.

Note: To check whether the ThinkPad computer

supports the Passphrase function, enter IBM BIOS Setup Utility and go to Security --> Password. If Using Passphrase item is displayed in the menu, this function is available on the ThinkPad computer.

2. Click Access BIOS. The system Restart Required

window is displayed.

3. Click Yes. The computer restarts, and the IBM BIOS

Setup Utility screen opens.

4. Select Security, using the cursor directional keys to

move down the menu.

5. Select Password.

6. Select Power-On Password.

7. Type the current SVP in the Enter Current Password field. then leave the Enter New Password field blank, and press Enter twice.

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

9. Press F10; then, in the Setup confirmation window, select Yes .

How to remove the hard-disk password

Attention: If User only mode is selected and the user

HDP has been forgotten and cannot be made available to the 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:

For R50/R50p series:

2. For the ThinkPad T40 and T40p series, enter the master HDP. For the ThinkPad T41 and T41 series, press F1 while HDP icon is appearing on the screen; then enter the master HDP.

3. Select Start setup utility. Enter the SVP.

Related service information

30 R50/R50p, R51 Series

4. Select Security, using the cursor keys to move down

the menu.

5. Select Password.

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

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

7. Select Master HDP.

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

9. Press F10.

10. Select Yes in the Setup Configuration window.

Both user HDP and master HDP will have been removed.

For

R51/R51p series:

1. Turn on the computer; then, while the “To interrupt normal startup, press the blue Access IBM button” message is displayed at the lower-left of the screen, press the Access IBM button. IBM Rescue and Recovery screen opens.

For models supporting the Passphrase function, press F1 while HDP icon is appearing on the screen; then enter the master HDP. For the other models, enter the master HDP.

Note: To check whether the ThinkPad computer

supports the Passphrase function, enter IBM BIOS Setup Utility and go to Security --> Password. If Using Passphrase item is displayed in the menu, this function is available on the ThinkPad computer.

2. Click Access BIOS. The system Restart Required window is displayed.

3. Click Yes. The computer restarts, and the IBM BIOS Setup Utility screen opens.

4. Select Security, using the cursor directional keys to move down the menu.

5. Select Password.

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

7. Select Master HDP.

8. Type the current master HDP in the Enter Current

Password field. then leave the Enter New Password

field blank, and press Enter twice.

9. Press F10.

10. Select Yes in the Setup Configuration window.

Both user HDP and master HDP will have been removed.

Related service information

General descriptions 31

Power management

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

Screen blank mode

Screen blank mode has three variants, as follows:

1. If you press Fn+F3, or if 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.

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.

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: If you are using the ACPI operating system, you can

change the action of Fn+F4.s

In certain circumstances, the computer goes into standby mode automatically:

v If a “suspend time” has been set on the timer, and the

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

v If the battery indicator blinks orange, indicating that the

battery power is low. (Alternatively, if Hibernate when battery becomes low has been selected in the “Power

Management Properties” window, the computer goes into hibernation mode.)

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

v Press the Fn key.

Related service information

32 R50/R50p, R51 Series

v Open the LCD cover.

v Turn on the power switch.

Also, in either of the following events, the computer automatically returns from standby mode and resumes operation:

v The ring indicator (RI) is signaled by a serial device or a

PC Card device.

v The time set on the resume timer elapses.

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

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.

Note:

If the computer enters the hibernation mode while it

is docked to the docking station, do not undock it 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 ACPI operating system and have

defined one of the following actions as the event that causes the system to go into hibernation mode, perform that action. – Closing the lid. – Pressing the power button. – Pressing Fn+F4 keys.

Also, the computer goes into hibernation mode automatically in either of the following conditions:

v If a “hibernation time” has been set on the timer, and if

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

v If the timer conditions are satisfied in suspend mode.

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

Related service information

General descriptions 33

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 43.

For some possible configurations of the computer, PC-Doctor might not run correctly. To avoid this problem, you need to initialize the computer setup by use of the IBM BIOS Setup Utility before you run PC-Doctor. On the IBM BIOS Setup Utility screen, press F9, Enter, F10, and then Enter.

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.

Creating the PC-Doctor diagnostics diskette

To create the PC-Doctor disk from the Access IBM Predesktop Area, do as follows:

1. Enter the IBM Predesktop application by pressing the

Access IBM button during POST.

2. When the Access IBM application finishes loading,

double-click the “Create Diagnostic Diskettes” icon.

3. Authenticating the digital signature takes about 15

seconds; then the ThinkPad computer will reboot into PC-DOS.

Checkout guide

34 R50/R50p, R51 Series

4. A batch file automatically starts up to prompt you through the process of creating diskettes. You are notified of how many diskettes you will need. a. Yo u are prompted to insert each diskette in

sequence.

b. Typically, all you need to do is to press the Enter

key for the floppy drive; the system then formats and creates the diskette.

c. Each diskette is erased and formatted with the

PC-Doctor DOS boot image.

5. As soon as all the diskettes have been created, the ThinkPad computer reboots. Yo u then receive a message asking you to remove the last diskette from the drive or, if you want to run the diagnostics, to insert the first diskette.

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 pointer. 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 37, and check the power sources.

If an error code appears, go to “Symptom-to-FRU index” on page 54.

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.)

Note:

PC-Doctor menu does not mean the formal

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

Checkout guide

General descriptions 35

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 Communication v Wireless LAN v Memory Test – Full v Memory Test – Quick

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

Notes:

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

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

v Video Adapter test supports only the LCD display on the

ThinkPad computer. If you have an external monitor attached to your computer, detach it before running PC-Doctor DOS.

v To test Digital Signature Chip, the chip must be enabled.

v When Legacy Floppy Drives is enabled in the IBM BIOS Setup

Utility, the Diskette Drives test is activated even if no legacy diskette drive is attached to the ThinkPad computer.

4. Run the applicable function test.

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

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

To cancel the test, press Esc.

Note:

After running PC-Doctor, check the time and date

on the system and reset them if they are incorrect.

Diagnostics

Run NormalTest Run QuickTest CPU/Coprocessor Systemboard Video Adapter Serial Ports Parallel Ports Fixed Disks Diskette Drives Other Devices Communication

Memory Test- Full Memory Test- Quick

Interactive Tests Hardware Info Utility Quit F1=Help

Use thecursor keys andESC to movein menus. Press ENTER to select.

Wireless LAN

Checkout guide

36 R50/R50p, R51 Series

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. Turn off the computer.

2. Remove the battery pack.

3. Connect the ac adapter.

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

5. Turn off the computer.

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

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

you suspect a power problem, see the appropriate one

of the following power supply checkouts:

v “Checking the ac adapter” on page 38 v “Checking operational charging” on page 38 v “Checking the battery pack” on page 38 v “Checking the backup battery” on page 39

Checkout guide

General descriptions 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 43.

Note:

Noise from the ac adapter does not always indicate

a defect.

Checking operational charging

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

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

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

Checking the battery pack

Battery charging does not start until the Power Meter shows that less than 95% of the total power remains;

Checkout guide

38 R50/R50p, R51 Series

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

2. Turn the computer upside down.

3. Remove the battery pack (see “1010 Battery pack” on page 68).

Checkout guide

General descriptions 39

4. Remove the backup battery (see “Checking the battery pack” on page 38).

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.

Checkout guide

40 R50/R50p, R51 Series

ThinkPad R50/R50p and R51 Series

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

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

Status indicators . . . . . . . . . . .48

FRU tests . . . . . . . . . . . . .50

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

Symptom-to-FRU index . . . . . . . . . .54

Numeric error codes . . . . . . . . . .54

Error messages . . . . . . . . . . .59

Beep symptoms . . . . . . . . . . .60

No-beep symptoms . . . . . . . . . .60

LCD-related symptoms . . . . . . . . .61

Intermittent problems . . . . . . . . . .62

Undetermined problems . . . . . . . . .62

FRU replacement notices . . . . . . . . .63

Screw notices . . . . . . . . . . . .63

Retaining serial numbers . . . . . . . . .64

Restoring the serial number of the system unit 64

Retaining the UUID . . . . . . . . .65

Reading or writing the ECA information . . .65

Removing and replacing a FRU . . . . . . . .67

1010 Battery pack . . . . . . . . . . .68

1020 Ultrabay Enhanced device . . . . . .69

1030 Hard disk drive . . . . . . . . . .70

1040 DIMM (optional) . . . . . . . . .72

1050 Keyboard . . . . . . . . . . .73

1060 DIMM (standard) . . . . . . . . .77

1070 Modem daughter card (MDC/MDC-2) . . .78 1080 Bluetooth/Modem daughter card

(BMDC/BMDC-2) . . . . . . . . . .80

1090 Keyboard bezel . . . . . . . . . .82

1100 Mini PCI adapter . . . . . . . . .86

1110 Fan assembly . . . . . . . . . .90

1120 CPU . . . . . . . . . . . . .91

1130 Backup battery . . . . . . . . . .92

1140 Speaker assembly . . . . . . . . .93

1150 IEEE 1394 cable . . . . . . . . .95

1160 PC Card slots assembly . . . . . . .98

1170 Ultrabay Enhanced shield kit . . . . . 100

1180 LCD assembly . . . . . . . . . . 107

1190 VGA and Ultrabay Enhanced device eject

button cable . . . . . . . . . . . 111

1200 System board, interposer card, and base

cover . . . . . . . . . . . . .114

2010 LCD front bezel . . . . . . . . . 121

2020 Inverter card . . . . . . . . . . 123

2030 LCD panel, LCD cable assembly, wireless

LAN antenna assembly, hinges, and LCD cover . 124

3010 ThinkPad Dock II PCI cover . . . . . . 134

3020 ThinkPad Dock II top cover . . . . . . 135

Locations . . . . . . . . . . . . . . 138

Front view . . . . . . . . . . . . 138

Rear view . . . . . . . . . . . . . 140

Bottom view . . . . . . . . . . . . 141

Parts list . . . . . . . . . . . . . . 142

R50/R50p and R51 series model matrix . . . . 142

Overall . . . . . . . . . . . . . 189

LCD FRUs . . . . . . . . . . . . 236

14.1-in. XGA TFT . . . . . . . . . 237

15.0-in. XGA TFT . . . . . . . . . 243

15.0-in. SXGA+ IPS TFT . . . . . . . 249

15.0-in. UXGA IPS TFT . . . . . . . . 253

15.0-in. QXGA IPS TFT . . . . . . . . 254

AC adapters . . . . . . . . . . . . 254

Keyboard . . . . . . . . . . . . . 255

Recovery CDs . . . . . . . . . . . 257

For Windows XP Professional (R50/R50p

series) . . . . . . . . . . . . 257

For Windows XP Professional (R51 series) 258 For Windows XP Home Edition (R50/R50p

series) . . . . . . . . . . . . 262

For Windows XP Home Edition (R51 series) 263

Miscellaneous parts . . . . . . . . . . 265

Optional FRUs . . . . . . . . . . . 269

Common parts list . . . . . . . . . . 270

Tools . . . . . . . . . . . . . 270

Power cords (system) . . . . . . . . 270

Power cords (ThinkPad Dock and ThinkPad

Dock II) . . . . . . . . . . . 271

Notices . . . . . . . . . . . . . . 272

Trademarks . . . . . . . . . . . . 272

42 R50/R50p, R51 Series

Product overview

This section presents the following product-unique information:

v “Specifications” v “Status indicators” on page 48 v “FRU tests” on page 50 v “Fn key combinations” on page 52

Specifications

The following table lists the specifications of the ThinkPad R50/R50p and R51 series:

Feature Description Processor R50 series:

v Intel

Pentium

M processor 1.4 GHz,

L2 1-MB cache

v Intel

Pentium

M processor 1.5 GHz,

L2 1-MB cache

v Intel

Pentium

M processor 1.6 GHz,

L2 1-MB cache

v Intel

Pentium

M processor 1.7 GHz,

L2 1-MB cache

R50p

series:

v Intel

Pentium

M processor 1.7 GHz,

L2 1-MB cache

R51

series:

v Mobile Intel

Celeron

processor 1.2

GHz, L2 1-MB cache

v Mobile Intel

Celeron

processor 1.3

GHz, L2 1-MB cache

v Mobile Intel

Celeron

processor 1.4

GHz, L2 1-MB cache

v Intel

Pentium

M processor 1.5 GHz,

L2 1-MB cache

v Intel

Pentium

M processor 1.6 GHz,

L2 1-MB cache

v Intel

Pentium

M processor 1.7 GHz,

L2 1-MB cache

v Intel

Pentium

M processor 715 (1.5A

GHz), L2 2-MB cache

v Intel

Pentium

M processor 725 (1.6A

GHz), L2 2-MB cache

v Intel

Pentium

M processor 735 (1.7A

GHz), L2 2-MB cache

v Intel

Pentium

M processor 745 (1.8

GHz), L2 2-MB cache

v Intel

Pentium

M processor 755 (2.0

GHz), L2 2-MB cache

(continued)

Product overview

ThinkPad R50/R50p and R51 Series 43

Feature Description Standard memory R50 series:

v 256 MB DDR SDRAM SO-DIMM

(PC2700) card × 1

v 512 MB DDR SDRAM SO-DIMM

(PC2700) card × 1

R50p

series:

v 512 MB DDR SDRAM SO-DIMM

(PC2700) card × 1

v 1 GB DDR SDRAM SO-DIMM (PC2700)

card × 1

R51

series:

v 128 MB DDR SDRAM SO-DIMM

(PC2700) card × 1

v 256 MB DDR SDRAM SO-DIMM

(PC2700) card × 1

v 512 MB DDR SDRAM SO-DIMM

(PC2700) card × 1

Optional memory v 128 MB DDR SDRAM SO-DIMM

(PC2700) card

v 256 MB DDR SDRAM SO-DIMM

(PC2700) card

v 512 MB DDR SDRAM SO-DIMM

(PC2700)

v 1 GB DDR SDRAM SO-DIMM (PC2700)

(maximum

of 2048 MB)

Bus architecture v 400 MHz PSB (Processor System Bus)

v 333 MHz DDR (Double Data Rate)

SDRAM (Synchronous DRAM) (PC2700)

v HUB link v PCI bus v LPC bus

Graphic memory chip

R50 series:

v 32 MB DDR SDRAM (ATI M7-32) v 32 MB DDR SDRAM (ATI M9-32)

R50p

series:

v 128 MB DDR SDRAM (ATI M10 GL-128)

R51

series:

v Intel 855GME

(total video memory: UMA, 64 MB)

v 32 MB DDR SDRAM (ATI M7-32) v 32 MB DDR SDRAM (ATI M9-32)

CMOS RAM v 242 bytes

(continued)

Product overview

44 R50/R50p, R51 Series

Feature Description

I/O port v External monitor connector

v Stereo headphone jack v Monaural microphone jack v Infrared port v Parallel connector v Docking connector v RJ11 connector v RJ45 connector v TV-out connector (S-Video) v Video-in connector v Universal serial bus (USB) 2.0 connector

× 2 (compatible with USB 1.1 and 2.0)

v IEEE 1394 connector (some models)

Internal modem v 56.6 Kbps

Audio v 1 W built-in stereo speaker × 2

v Software control volume

Infrared transfer v IrDA 1.1 Display R50 series:

v 14.1-inch, 16M colors, XGA (1024 × 768

resolution) TFT color LCD

v 15.0-inch, 16M colors, XGA (1024 × 768

resolution) TFT color LCD

v 15.0-inch, 16M colors, SXGA+ (1400 ×

1050 resolution) IPS (in-plane switching) TFT color LCD

R50p

series:

v 15.0-inch, 16M colors, UXGA (1600 ×

1200 resolution) IPS TFT color LCD

v 15.0-inch, 16M colors, QXGA (2048 ×

1536 resolution) IPS TFT color LCD (supported by CTO)

R51

series:

v 14.1-inch, 16M colors, XGA (1024 × 768

resolution) TFT color LCD

v 15.0-inch, 16M colors, XGA (1024 × 768

resolution) TFT color LCD

v 15.0-inch, 16M colors, SXGA+ (1400 ×

1050 resolution) IPS TFT color LCD

(continued)

Product overview

ThinkPad R50/R50p and R51 Series 45

Feature Description

Ultrabay Enhanced device

R50 series:

v CD-ROM drive, 12.7 mm high v DVD drive, 12.7 mm high v DVD/CD-RW combo drive, 12.7 mm

high

v DVD-RW/CD-RW combo drive, 12.7 mm

high (option)

R50p

series:

v CD-ROM drive, 12.7 mm high v DVD/CD-RW combo drive, 12.7 mm

high

v DVD-RW/CD-RW combo drive, 12.7 mm

high

R51

series:

v CD-ROM drive, 12.7 mm high v DVD drive, 12.7 mm high v DVD/CD-RW combo drive, 12.7 mm

high

v DVD-RW/CD-RW combo drive, 12.7 mm

high

v DVD drive, 9.5 mm high (option) v DVD/CD-RW combo drive, 9.5 mm high

(option)

Touch pad v UltraNav

ThinkLight Yes Hard disk drive R50 series:

v 30.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

v 40.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

v 60.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

R50p

series:

v 60.0 GB, 7200 rpm, 9.5 mm high, IDE

interface

v 80.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

R51

series:

v 20.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

v 30.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

v 40.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

v 60.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

(continued)

Product overview

46 R50/R50p, R51 Series

Feature Description

Integrated wireless LAN feature

v 802.11b v 802.11b/g v 802.11a/b/g and Bluetooth wireless

Mini PCI adapter R50/ R50p series:

v Intel

PRO/Wireless LAN 2100 3B Mini

PCI Adapter (802.11b)

v IBM 11a/b/g Wireless LAN Mini PCI

Adapter (802.11a/b/g)

R51

series:

v Intel

PRO/Wireless LAN 2100 3B Mini

PCI Adapter (802.11b)

v IBM 11a/b/g Wireless LAN Mini PCI

Adapter (802.11a/b/g)

v Intel

PRO Wireless 2200BG Mini-PCI

Adapter

v IBM 11b/g Wireless LAN Mini PCI

Adapter

v IBM 11a/b/g Wireless LAN Mini PCI

Adapter II

PC Card R50 series and R51 series:

v One Type-III v One Type-II

R50p

series:

v One Type-III v Two Type-II

Ethernet (on the system board)

R50 series and R51 series:

v 10/100Base Ethernet v Gigabit Ethernet

R50p

series:

v Gigabit Ethernet

Communication daughter card (CDC)

R50/R50p series:

v V.90 modem daughter card (MDC) v IBM Integrated Bluetooth with 56K

Modem (BMDC)

R51

series:

v IBM Integrated 56K Modem (MDC-2) v IBM Integrated Bluetooth III with 56K

Modem (BMDC-2)

Battery v Li-ion battery (6 cells)

v Li-ion battery (9 cells) v Ultrabay Enhanced Li Polymer battery, 3

cells (option)

AC adapter v 72-watt type

Preinstalled operating system

v Windows XP Professional v Windows XP Home Edition

Product overview

ThinkPad R50/R50p and R51 Series 47

Status indicators

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

1 2 3 4 5 6 7 8

2 7 8

Product overview

48 R50/R50p, R51 Series

Indicator Meaning

1 Wireless

status

Green:

The wireless feature (the IEEE 802.11 standard) is on, and the radio link is ready for use.

Blinking green:

Data is being transmitted.

2 Bluetooth

wireless status

Green:

Bluetooth wireless feature is operational.

This indicator is on when Bluetooth wireless feature is on and not in suspend mode.

3 Num lock

Green:

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

5 Caps lock

Green:

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

5 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 Enhanced device. 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.

6 Power-on

Green:

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

7 Battery

status

Green:

The battery is in use and has enough power. The ac adapter has charged the battery completely.

Blinking green:

The battery is being charged, but still has enough power to operate. (At regular intervals, the indicator light turns off briefly.)

Orange:

The battery is being charged, but the battery power is still low.

Blinking orange:

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

(continued)

Product overview

ThinkPad R50/R50p and R51 Series 49

Indicator Meaning

8 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.

9 Ultrabay

Enhanced status

Green:

An Ultrabay Enhanced device is installed and in use.

Blinking green:

An Ultrabay Enhanced device is in the process of being detached.

Turn off:

An Ultrabay Enhanced device is ready to be attached or detached.

FRU tests

The following table shows the test for each FRU.

FRU Applicable test

System board 1. Diagnostics --> CPU/Coprocessor

2. Diagnostics --> Systemboard

3. If the docking station or the port replicator is attached to the ThinkPad computer, undock it. Place the computer on a horizontal surface, and run Diagnostics -->

Other Devices --> IBM HDD Active Protection Test. Note: Do not apply any physical shock to

the computer while the test is running.

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

Adapter, IBM Battery 1 (IBM Battery 2)

LCD unit

1. Diagnostics --> Video Adapter

2. Interactive Tests --> Video

Modem daughter card (MDC or BMDC)

1. Make sure the modem is set up correctly.

2. Replace the modem jack and the modem card in turn, and run the following tests in Diagnostics --> Communication: a. Lucent Soft Modem Loopback b. Lucent Soft Modem Dialtone c. Conexant Smart Modem Interrupt d. Conexant Smart Modem Dialtone

Audio 1. Interactive Tests --> Internal Speaker

2. Diagnostics --> Other Devices --> Analog

Devices AC97 CODEC Test

Speaker Interactive Tests --> Internal Speaker

(continued)

Product overview

50 R50/R50p, R51 Series

FRU Applicable test PC Card slots 1. Diagnostics --> Systemboard -->

PCMCIA

2. Insert a PC Card Wrap Plug into every PC

Card slot, and run Diagnostics -->

Systemboard --> PCMCIA External Loop

Keyboard 1. Diagnostics --> Systemboard -->

Keyboard

2. Interactive Tests --> Keyboard Hard-disk drive Diagnostics --> Fixed Disks Diskette drive 1. Diagnostics --> Diskette Drives

2. Interactive Tests --> Diskette

DVD drive or DVD/CD-RW combo 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 PC Card slot.

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

IBM Fan.

TrackPoint or pointing device

If the TrackPoint does not work, check the configuration as specified in the ThinkPad Configuration program. If the TrackPoint is disabled, select Automatic 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

Touch Pad If the Touch Pad does not work, check the

configuration as specified in the ThinkPad Configuration program. If the Touch Pad is disabled, select Automatic to enable it. If enabling the Touch Pad does not correct the problem, continue with the following:

v Interactive Tests --> Mouse

Product overview

ThinkPad R50/R50p and R51 Series 51

Fn key combinations

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

Key combination

Description

Fn+F1 Reserved.

Fn+F2 Reserved.

Fn+F3 Turn off the computer display, leaving the

screen blank. To turn the computer display on again, press any key or press the TrackPoint pointing stick.

Fn+F4 Put the computer in standby mode. To return to

normal operation, press the Fn key only, without pressing a function key.

Note: This combination of keys functions as a

sleep button. The setting can be changed so that pressing it puts the computer into hibernation mode or even shuts the computer down.

Fn+F5 Control the power source of the built-in

Bluetooth wireless device. This combination of

the keys functions as a toggle switch of the power state.

Note: In Windows 2000 or Windows XP, this

combination of keys enables or disables the built-in wireless networking features (the IEEE

802.11 standard) and the Bluetooth wireless features. To use this function, the following drivers must be installed.

v IBM ThinkPad Power Management driver v OnScreen Display utility v Wireless device drivers

Fn+F6 Reserved.

Fn+F7 Switch a display output location

v External monitor (CRT display) v Computer display and external monitor (LCD

+ CRT display)

v Computer display (LCD)

Note:

For any operating system other than

Windows 2000 or Windows XP, no additional procedure is needed; just press Fn+F7.

Notes:

1. This function does not work when different desktop images are displayed on the computer display and the external monitor (the Extend desktop function).

2. This function does not work while a DVD movie or a video clip is playing.

3. For Windows 2000 or Windows XP, a hotkey application might take over the switching function.

(continued)

Product overview

52 R50/R50p, R51 Series

Key combination

Description

Fn+F8 If the image displayed on the computer is

smaller than the physical display, switch the computer screen size between expanded mode and normal mode.

Fn+F9 Open the IBM ThinkPad EasyEject Utility

screen. Buttons for the following choices are displayed: v Eject ThinkPad PC from Dock: This button

is displayed only if the ThinkPad computer has been attached to a ThinkPad Dock II. The computer can be detached from the ThinkPad Dock II.

v Eject ThinkPad PC from Mini Dock: This

button is displayed only if the ThinkPad computer has been docked in a ThinkPad Mini Dock and one or more USB devices have been connected to the ThinkPad Mini Dock. You can stop and remove all the USB devices safely by clicking the button.

Note: If a diskette drive is connected to the

external-diskette-drive connector of the ThinkPad Mini Dock, you cannot connect a USB diskette drive.

v Run EasyEject Actions: This button is used

to select, stop, or remove external devices connected to the ThinkPad computer.

v Configure EasyEject Actions: Opens the

IBM ThinkPad EasyEject Utility main window.

v Fn+F9 Settings: Contigures the settings for

the Fn+F9 function.

You

can use this utility to stop and remove all

ejectable devices connected to the ThinkPad computer, the ThinkPad Mini Dock, or the ThinkPad Port Replicator II. You cannot use it to detach the computer from the ThinkPad Mini Dock or the ThinkPad Port Replicator II.

Fn+F10 Reserved.

Fn+F11 Reserved.

Fn+F12 Put the computer into hibernation mode. To

return to normal operation, press the power button for less than four seconds.

Note: To use Fn+F12 for hibernation, you must

have the IBM PM device driver installed on the computer.

Fn+PgUp Turn the ThinkLight on or off.

Note: This function is supported only on the

ThinkPad computers that have the ThinkLight. The on or off status of the ThinkLight is shown on the screen for a few seconds when you press Fn+PgUp.

Fn+Home The computer display becomes brighter.

Fn+End The computer display becomes dimmer.

Fn+Spacebar Enable the FullScreen Magnifier function.

Product overview

ThinkPad R50/R50p and R51 Series 53

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 62.

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.

0176

System

Security—The system

has been tampered with.

1. Run IBM BIOS Setup

Utility, and save the current setting by pressing F10.

2. System board.

0177

Bad

SVP data, stop POST

task—The checksum of the supervisor password in the EEPROM is not correct.

System board

Symptom-to-FRU index

54 R50/R50p, R51 Series

Symptom or error FRU or action, in sequence 0182

Bad

CRC2. Enter BIOS Setup

and load Setup defaults.—The checksum of the CRS2 setting in the EEPROM is not correct.

1. Run IBM BIOS Setup

Utility. Press F9, and Enter to load the default setting. Then save the current setting by pressing F10.

2. System board.

0185

Bad

startup sequence settings.

Enter BIOS Setup and load Setup defaults.

1. Run IBM BIOS Setup

Utility. Press F9, and Enter to load the default setting. Then save the current setting by pressing F10.

0187

EAIA

data access error—The

access to EEPROM is failed.

System board.

0188

Invalid

RFID Serialization

Information Area.

System board.

0189

Invalid

RFID configuration

information area—The EEPROM checksum is not correct.

System board.

0190

Critical

low-battery error

1. Charge the battery pack.

2. Battery pack.

0191

System

Security—Invalid

Remote Change requested.

1. Run IBM BIOS Setup

Utility, and then save current setting by pressing F10.

2. System board.

0192

System

Security—IBM

Embedded Security hardware tamper detected.

System board.

0199

System

Security—IBM Security

password retry count exceeded.

1. Run IBM BIOS Setup

Utility, and then save the current setting by pressing F10.

2. System board.

01C8

Two

or more modem devices

are found. Remove all but one of them. Press <Esc> to continue.

1. Remove either a Mini-PCI

Card or a modem daughter card. Otherwise, press Esc to ignore the warning message.

2. System board.

01C9

than one Ethernet devices

are found. Remove one of them. Press <Esc> to continue.

1. Remove the Ethernet

device that you installed; or press Esc to ignore the warning message.

2. System board.

Symptom-to-FRU index

ThinkPad R50/R50p and R51 Series 55

Symptom or error FRU or action, in sequence 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

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—Shadow

RAM fails at offset nnnn.

System board.

0231

System

RAM error—System

RAM fails at offset nnnn.

1. DIMM.

2. System board.

0232

Extended

RAM error—

Extended RAM fails at offset nnnn.

1. DIMM.

2. System board.

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.

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.

0280

boot incomplete—

Default configuration used.

1. Load “Setup Default” in IBM BIOS Setup Utility.

2. DIMM.

3. System board.

Symptom-to-FRU index

56 R50/R50p, R51 Series

Symptom or error FRU or action, in sequence 02F4

EISA

CMOS not writable.

1. Load Setup Defaults in IBM BIOS Setup Utility.

2. Replace the backup battery.

3. System board.

02F5

DMA

test failed.

1. DIMM.

2. System board.

02F6

Software

NMI failed

1. DIMM.

2. System board.

02F7

Fail-safe

timer NMI failed

1. DIMM.

2. System board.

1802

Unauthorized

network card is

plugged in—Turn off and remove the miniPCI network card.

1. Remove Mini PCI network

card.

2. System board.

1803

Unauthorized

daughter card is

plugged in—Turn off and remove the daughter card.

1. Remove the daughter

card that you installed.

2. System board.

Symptom-to-FRU index

ThinkPad R50/R50p and R51 Series 57

Symptom or error FRU or action, in sequence 1810

Hard

disk partition layout error.

1. If the Access IBM

Predesktop Area has been previously disabled, then go to the IBM BIOS Setup Utility by pressing F1 to open the IBM BIOS Setup Utility. Select Security --> IBM Predesktop Area --> Access IBM Predesktop Area. Set this item to Disabled. Save and exit.

2. If the Access IBM Predesktop Area has not been previously disabled, press Enter to load Access IBM Predesktop Area. Then run RECOVER TO

FACTORY CONTENTS in

Access IBM Predesktop Area.

3. If item 2 failed, press F3 in the Welcome screen in

RECOVER TO FACTORY CONTENTS. Run FDISK,

and then delete all partitions. Run RECOVER

TO FACTORY CONTENTS

in Access IBM Predesktop Area again.

4. If item 3 failed, select CD-ROM boot in Startup in Access IBM Predesktop Area. Boot from the Recovery CD and perform full recovery from it.

5. If item 4 failed, replace the hard disk drive.

2000

IBM

Hard Drive Active

Protection sensor diagnostics failed. Press

<Esc> to continue.

Press

<F1> to enter SETUP

1. Undock docking station or port replicator if it is attached to the ThinkPad computer, and place the computer on a horizontal surface. Do not apply any physical shock to the computer.

2. Run Diagnostics --> Other

Devices --> IBM HDD Active Protection Test.

Symptom-to-FRU index

58 R50/R50p, R51 Series

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. Thermal sensing error. System board.

Authentication of system services failed. Press <Esc> to resume.

The IBM Predesktop Area in the HDD is corrupted. Restore it from a recovery CD.

Symptom-to-FRU index

ThinkPad R50/R50p and R51 Series 59

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 54.

Two short beeps and a blank screen.

1. System board.

2. DIMM.

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

1. DIMM.

2. System board

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

Only the cursor appears. Reinstall the operating

system.

Four cycles of four short beeps and a blank screen.

System board (IBM security

chip)

Five short beeps and a blank screen.

System board

No-beep symptoms

Symptom or error FRU or action, in sequence

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

1. Make sure that every

connector is connected tightly and correctly.

2. DIMM.

3. System board.

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

1. Reseat DIMM.

2. System board.

The power-on password prompt appears.

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

The hard-disk password prompt appears.

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

The DOS full screen looks smaller than it should.

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

Symptom-to-FRU index

60 R50/R50p, R51 Series

LCD-related symptoms

Important

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

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

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

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

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

v UXGA: 11 or more bright dots, 16 or more dark

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

v QXGA: 15 or more bright dots, 16 or more dark

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

Note:

A bright dot means a pixel is always on

(white or color.) A dark dot means a pixel is always off (black color.)

Symptom or error FRU or action, in sequence

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

System board.

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

adjusted.

v LCD contrast cannot be

adjusted.

1. Reseat the LCD connectors.

2. LCD assembly.

3. System board.

v 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.

Symptom-to-FRU index

ThinkPad R50/R50p and R51 Series 61

Intermittent problems

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

When analyzing an intermittent problem, do the following:

1. Run the diagnostic test for the system board in loop

mode at least 10 times.

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

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

Undetermined problems

If the diagnostic tests did not identify the adapter or device that has failed, if wrong devices are installed, or if the system simply is not operating, follow these procedures to isolate the failing FRU (do not isolate FRUs that have no defects).

Verify that all attached devices are supported by the computer.

Verify that the power supply being used at the time of the failure is operating correctly. (See “Power system checkout” on page 37.)

1. Turn off the computer.

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

3. Remove or disconnect all of the following devices: a. Non-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. CD-ROM and diskette drive in the Ultrabay i. PC Cards

4. Turn on the computer.

5. Determine whether the problem has been solved.

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

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

Symptom-to-FRU index

62 R50/R50p, R51 Series

FRU replacement notices

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

Screw notices

Loose screws can cause a reliability problem. In the 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 Each one should be used only once.

the following when you service this machine:

v Keep the screw kit (for the P/N, see “Miscellaneous

parts” on page 265) 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

ThinkPad R50/R50p and R51 Series 63

v Make sure that you use the correct screw. If you have a

torque screwdriver, tighten all screws firmly to the torque shown in the table. Never use a screw that you

removed. Use a new one. Make sure that all of the screws are tightened firmly.

Retaining serial numbers

This section includes the following descriptions:

v “Restoring the serial number of the system unit” v “Retaining the UUID” on page 65 v “Reading or writing the ECA information” on page 65

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 1.71 or later, and restart the computer.

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

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

The serial number of each device in your computer is displayed; the serial number of the system unit is listed as follows:

20: Serial number

Write down that number.

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

on the label attached to the bottom of the computer.

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

1. Install the ThinkPad Hardware Maintenance Diskette Version 1.71 or later and restart the computer.

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

3. Select 1. Add S/N data from EEPROM.

Follow the instructions on the screen.

FRU replacement notices

64 R50/R50p, R51 Series

Retaining the UUID

The Universally Unique Identifier (UUID) is a 128-bit number uniquely assigned to your computer at production and stored in the EEPROM of your system board. The algorithm that generates the number is designed to provide unique IDs until the year A.D. 3400. No two computers in the world have the same number.

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

1. Install the ThinkPad Hardware Maintenance Diskette Version 1.71 or later, and restart the computer.

2. From the main menu, select 4. Assign UUID.

A new UUID is created and written. If a valid UUID already exists, it is not overwritten.

Reading or writing the ECA information

Information on Engineering Change Announcements (ECA) are stored in the EEPROM of the system board. The electronic storage of this information simplifies the procedure to check if the ECA has been previously applied to a machine. The machine does not need to be disassembled to check for the ECA application.

To check what ECAs have been previously applied to the machine, use the ECA Information Read/Write function on the ThinkPad Hardware Maintenance Diskette Version 1.71 or later.

1. Insert the ThinkPad Hardware Maintenance Diskette Version 1.71 or later, and restart the computer.

2. From the main menu, select 6. Set ECA Information.

3. To read ECA information, select 2. Read ECA/rework

number from EEPROM and follow the instruction.

4. To read box build date, select 5. Read box build date from EEPROM, and follow the instruction on the

screen.

After an ECA has been applied to the machine, the EEPROM must be updated to reflect the ECA's application. Use the ThinkPad Hardware Maintenance Diskette Version 1.71 or later to update the EEPROM.

Note: Only the ECA number is stored in the EEPROM.

The machine type of the ECA is assumed be the same as the machine type of the machine that had the ECA applied to it.

1. Insert the ThinkPad Hardware Maintenance Diskette Version 1.71 or later, and restart the computer.

2. From the main menu, select 6. Set ECA Information.

FRU replacement notices

ThinkPad R50/R50p and R51 Series 65

3. To write ECA information, select 1. Write ECA/rework number from EEPROM, and follow the instruction.

4. To write box build date, select 4. Write box build date from EEPROM, and follow the instruction on the

screen.

If the system board is being replaced, try to read the ECA information from the old system board and transfer the information to the new system. If the system board is inoperable, this will not be possible.

FRU replacement notices

66 R50/R50p, R51 Series

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 63.

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

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

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

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

7. To put the new FRU in place, reverse the removal procedure and follow any notes that pertain to replacement. For information about connecting and arranging internal cables, see “Locations” on page 138.

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

DANGER

Attention: After replacing a FRU, do not turn on the

computer until you have made sure that all screws, springs, and other small parts are in place and none are loose inside the computer. Verify this by shaking the computer gently and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits.

Attention: The system board is sensitive to, and can be

damaged by, electrostatic discharge. Before touching it, establish personal grounding by touching a ground point with one hand or by using an electrostatic discharge (ESD) strap (P/N 6405959).

Before

removing any FRU, turn off the computer,

unplug all power cords from electrical outlets, remove the battery pack, and then disconnect any interconnecting cables.

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 67

1010 Battery pack

DANGER

Holding the battery release lever in the unlocked position 1, remove the battery pack 2.

When installing: Install the battery pack along the slide

rails on the left and right sides of the battery-pack slot. Then make sure that the battery latch is locked.

Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode.

Removing and replacing a FRU

68 R50/R50p, R51 Series

1020 Ultrabay Enhanced device

Note

Ultrabay Enhanced does not accept any of the following devices:

v Ultrabay Plus devices v Ultrabay 2000 devices

For devices compatible with the Ultrabay Enhanced, see “Optional FRUs” on page 269.

When you release the switch in step 1, the lever pops

out. In step 2, pull the lever a little to release the device from the bay.

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 69

1030 Hard disk drive

Attention

v Do not drop the hard disk drive or apply any

physical shock to it. The hard disk drive is

sensitive to physical shock. Improper handling can cause damage and permanent loss of data.

v Before removing the drive, have the user make a

backup copy of all the information on it if possible.

v Never remove the drive while the system is

operating or is in suspend mode.

For access, remove this FRU:

v “1010 Battery pack” on page 68

Note: The hard disk is attached to the cover.

Step Screw (quantity)

1 HDD screw (1) or security screw (1)

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

(continued)

Removing and replacing a FRU

70 R50/R50p, R51 Series

When installing: Make sure that the hard-disk connector

is attached firmly.

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 71

1040 DIMM (optional)

For access, remove this FRU:

v “1010 Battery pack” on page 68

Note:

Loosen the screw 1, but do not remove it.

When installing: Insert the notched end of the DIMM into

the socket. Press the DIMM firmly, and pivot it until it snaps into the place. Make sure that it is firmly fixed in the slot and does not move easily.

Removing and replacing a FRU

72 R50/R50p, R51 Series

1050 Keyboard

For access, remove this FRU:

v “1010 Battery pack” on page 68

Screw 1a is only for the models with 14.1-in. LCD.

Step Icon Screw (quantity) Color Torque

1

M2 × 12 mm, bind-head, nylon-coated (3)

Black 0.245 Nm

(2.5

kgfcm)

1a M2 × 12 mm, bind-head,

nylon-coated (1)

Black 0.245 Nm

(2.5

kgfcm)

(continued)

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 73

Press the part indicated by the arrow 2 in the direction of the arrow. This releases the latches of the keyboard from the frame, so that the front side of the keyboard pops out.

When installing: Make sure that the connector 4 is

firmly attached.

Removing and replacing a FRU

74 R50/R50p, R51 Series

When installing:

1. Attach the connector 1.

2. Install the keyboard so that the keyboard edges are under the frame.

(continued)

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 75

3. To make sure that the front edge of the keyboard is housed firmly, gently press the keys with your fingers and try to slide the keyboard towards you.

4. Make sure that all the projections on the front side of the keyboard b are firmly attached under the frame.

5. Secure the keyboard from the underside of the computer, using the new screws provided with the keyboard.

Removing and replacing a FRU

76 R50/R50p, R51 Series

1060 DIMM (standard)

For access, remove these FRUs in order:

v “1010 Battery pack” on page 68 v “1050 Keyboard” on page 73

When installing: Insert the notched end of the DIMM into

the socket. Press the DIMM firmly, and pivot it until it snaps into the place. Make sure that it is firmly fixed in the slot and does not move easily.

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 77

1070 Modem daughter card (MDC/MDC-2)

For access, remove these FRUs in order:

v “1010 Battery pack” on page 68

v “1050 Keyboard” on page 73

Step Screw (quantity) Color Torque

1 M2 × 12 mm, bind-head,

nylon-coated (2)

Black 0.245 Nm

(2.5

kgfcm)

In step 2, remove the card by pulling the tab with your fingers in the direction of the arrow.

(continued)

Removing and replacing a FRU

78 R50/R50p, R51 Series

Turn the card over 3, and detach the modem connector 4.

When installing: Make sure that connector 4 and the

connector on the underside of the card are firmly attached. Then place the cable to fit in the cable guide as in the figure.

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 79

1080 Bluetooth/Modem daughter card (BMDC/BMDC-2)

For access, remove these FRUs in order:

v “1010 Battery pack” on page 68 v “1050 Keyboard” on page 73

Step Screw (quantity) Color Torque

1 M2 × 12 mm, bind-head,

nylon-coated (2)

Black 0.245 Nm

(2.5

kgfcm)

In step 2, remove the card by pulling the tab with your fingers in the direction of the arrow.

(continued)

Removing and replacing a FRU

80 R50/R50p, R51 Series

Turn the card over 3, and detach the modem connector 4. If the Bluetooth wireless antenna jack has a tab

marked ″BT″, unplug the jack by pulling the tab with your fingers. If the antenna jack does not have the tab, unplug the jack by using the removal tool antenna RF connector (P/N: 08K7159) or pick the connetor with your fingers and gently unplug it in direction of the arrow 5.

When installing: Make sure that connector 4, the jack

5, and the connector on the underside

of the card are firmly attached. Then place the cable to fit in the cable guide as in the figure.

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 81

1090 Keyboard bezel

For access, remove these FRUs in order:

v “1010 Battery pack” on page 68 v “1050 Keyboard” on page 73

Screw 2a is only for the models with 15.0-in. LCD.

Step Icon Screw (quantity) Color Torque

1

M2 × 3 mm, small-head, nylon-coated (3)

Silver 0.245 Nm

(2.5

kgfcm)

2

M2 × 6 mm, bind-head, nylon-coated (4)

Black 0.245 Nm

(2.5

kgfcm)

2a M2 × 6 mm, bind-head,

nylon-coated (1)

Black 0.245 Nm

(2.5

kgfcm)

(continued)

Removing and replacing a FRU

82 R50/R50p, R51 Series

Step Icon Screw (quantity) Color Torque

3

M2 × 12 mm, bind-head, nylon-coated (3)

Silver 0.245 Nm

(2.5

kgfcm)

4

M2 × 12 mm, bind-head, nylon-coated (2)

Silver 0.245 Nm

(2.5

kgfcm)

5

M2 × 18.9 mm, special (1)

Silver 0.245 Nm

(2.5

kgfcm)

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 83

When installing:

1. Place the keybard bezel so that the three latches are fixed in palce 1.

While inserting the three latches, align the top-left corner of the keyboard bezel as in figure a.

(continued)

Removing and replacing a FRU

84 R50/R50p, R51 Series

2. Press the left edges 2 and the front edges 3 of the

keyboard bezel until the latches are snapped.

3. Attach the touch pad connector 4.

4. Secure the keyboard bezel from the underside of the computer with the screws.

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 85

1100 Mini PCI adapter

For access, remove these FRUs in order:

v “1010 Battery pack” on page 68 v “1030 Hard disk drive” on page 70 v “1050 Keyboard” on page 73 v “1090 Keyboard bezel” on page 82

(continued)

Removing and replacing a FRU

86 R50/R50p, R51 Series

If the wireless antenna jacks have tabs marked ″MAIN″ or ″AUX″, unplug the jacks by pulling the tabs with your

fingers. If the antenna jacks do not have the tabs, unplug the jacks by using the removal tool antenna RF connector (P/N: 08K7159) or pick the connectors with your fingers and gently unplug it in direction of the arrow 3.

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 87

When installing: Plug in the wireless antenna cable as

follows:

Intel

PRO/Wireless LAN 2100 3B Mini PCI Adapter or

Intel

PRO Wireless 2200BG Mini-PCI Adapter

In case of the antenna jacks have the tabs, plug the gray antenna cable with the tab marked MAIN into jack M, and the black antenna cable with the tab marked AUX into jack A.

In case of the antenna jacks do not have the tabs, plug the gray cable to jack M, and the black cable to jack A.

MAIN

AUX

Removing and replacing a FRU

88 R50/R50p, R51 Series

IBM 11a/b/g Wireless LAN Mini PCI Adapter, IBM 11b/g Wireless LAN Mini PCI Adapter

In case of the antenna jacks have the tabs, plug the gray antenna cable with the tab marked MAIN into jack MAIN, and the black antenna cable with the tab marked AUX into jack AUX.

In case of the antenna jacks do not have the tabs, plug the gray cable to jack MAIN, and the black cable to jack AUX.

MAIN

AUX

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

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 89

1110 Fan assembly

For access, remove these FRUs in order:

v “1010 Battery pack” on page 68 v “1030 Hard disk drive” on page 70 v “1050 Keyboard” on page 73 v “1090 Keyboard bezel” on page 82

Step Screw (quantity) Color Torque

1 M2 × 10 mm, flat-head,

nylon-coated (3)

Black 0.245 Nm

(2.5

kgfcm)

When installing:

1. Make sure that the connector 3 is firmly attached.

2. Apply thermal grease on the part marked a in this

figure.

(Bottom view of the fan assembly)

Removing and replacing a FRU

90 R50/R50p, R51 Series

1120 CPU

For access, remove these FRUs in order:

v “1010 Battery pack” on page 68 v “1030 Hard disk drive” on page 70 v “1050 Keyboard” on page 73 v “1090 Keyboard bezel” on page 82 v “ 1110 Fan assembly” on page 90

Rotate the head of the screw in the direction of arrow 1 to release the lock; then remove the CPU 2.

When installing: Place the CPU on the CPU socket a,

and then rotate the head of the screw in the direction of arrow b to secure the CPU.

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 91

1130 Backup battery

DANGER

For access, remove these FRUs in order:

v “1010 Battery pack” on page 68 v “1030 Hard disk drive” on page 70 v “1050 Keyboard” on page 73 v “1090 Keyboard bezel” on page 82

When installing: Make sure that the battery connector

2 is firmly attached.

Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode.

Removing and replacing a FRU

92 R50/R50p, R51 Series

1140 Speaker assembly

For access, remove these FRUs in order:

v “1010 Battery pack” on page 68 v “1030 Hard disk drive” on page 70 v “1050 Keyboard” on page 73 v “1090 Keyboard bezel” on page 82

Step Screw (quantity) Color Torque

1 M2 × 12 mm, bind-head,

nylon-coated (2)

Black 0.245 Nm

(2.5

kgfcm)

(continued)

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 93

In step 3, release the speaker cables from the cable guide a.

When installing: Make sure that the connector 3 is

firmly attached. Then route the cable as in a.

Removing and replacing a FRU

94 R50/R50p, R51 Series

1150 IEEE 1394 cable

For access, remove these FRUs in order:

v “1010 Battery pack” on page 68 v “1030 Hard disk drive” on page 70 v “1050 Keyboard” on page 73 v “1090 Keyboard bezel” on page 82 v “1140 Speaker assembly” on page 93

Note

Some models do not have the IEEE 1394 cable.

Step Screw (quantity) Color Torque

1 M2 × 12 mm, bind-head,

nylon-coated (1)

Black 0.245 Nm

(2.5

kgfcm)

(continued)

Removing and replacing a FRU

ThinkPad R50/R50p and R51 Series 95

Step Screw (quantity) Color Torque

4 M2 × 6 mm, bind-head,

nylon-coated (1)

Black 0.245 Nm

(2.5

kgfcm)

Before remove the IEEE 1394 cable, remove bracket structure 5.

(continued)

Removing and replacing a FRU

96 R50/R50p, R51 Series

IBM ThinkPad MT 1829, ThinkPad MT 1830, ThinkPad MT 1831, ThinkPad MT 1832, ThinkPad MT 1833 Hardware Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual