IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual October 2001 This manual supports: ThinkPad A20m, A21m, A22m (MT 2628/2633) A20p, A21p, A22p (MT 2629) ThinkPad Dock (MT 2631) Note Before using this information and the product it supports, be sure to read the general information under "Notices" on page 150. Second Edition (October 2001) The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with local law: INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION "AS IS" WITHOUT ANY WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE LIMITED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer or express or implied warranties in certain transactions; therefore, this statement may not apply to you. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements or changes to the products or the programs described in this publication at any time. It is possible that this publication may contain references to, or information about, IBM products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that IBM intends to announce such IBM products, programming, or services in your country. Requests for technical information about IBM products should be made to your IBM authorized dealer or your IBM marketing representative. © Copyright International Business Machines Corporation 2001. All rights reserved. US Government Users Restricted Rights ­ Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. About this manual This manual contains service and reference information for IBM ThinkPad A20, A21, A22 (MT2628, 2629, 2633), and ThinkPad Dock (MT2631) 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 3, "Safety information" on page 14, and "Laser compliance statement" on page 18. © Copyright IBM Corp. 2001 iii iv ThinkPad A20m/p, A21m/p, A22m/p Contents About this manual . . . . . . . . . . . iii .1 .1 .1 .2 .2 .3 . 14 . 14 . 15 . 16 17 . 18 . 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 23 23 25 25 25 27 30 33 33 35 35 39 41 41 44 46 48 49 49 52 53 53 54 55 55 56 56 57 59 60 61 63 Introduction . . . . . . . . . . . . Important service information . . . . . . . . Strategy for replacing FRUs . . . . . . . How to use error messages . . . . . . . Diskette compatibility matrix . . . . . . . . Safety notices: multilingual translations . . . . . Safety information. . . . . . . . . . . General safety . . . . . . . . . . . Electrical safety . . . . . . . . . . Safety inspection guide . . . . . . . . Handling electrostatic discharge-sensitive devices Grounding requirements . . . . . . . . Laser compliance statement. . . . . . . . General descriptions . . . . . . . . Read this first . . . . . . . . . . . What to do first . . . . . . . . . Related service information . . . . . . . Service web site . . . . . . . . . Product recovery program . . . . . . Passwords . . . . . . . . . . . Power management . . . . . . . . Checkout guide . . . . . . . . . . Testing the computer . . . . . . . . Detecting system information with PC-Doctor. Power system checkout . . . . . . . ThinkPad A20m/p, A21m/p and A22m/p. Product overview . . . . . . . . Specifications . . . . . . . . Status indicators . . . . . . . FRU tests . . . . . . . . . Fn key combinations . . . . . . Symptom-to-FRU index . . . . . . Numeric error codes . . . . . . Error messages . . . . . . . Beep symptoms . . . . . . . No beep symptoms . . . . . . LCD-related symptoms . . . . . Intermittent problems . . . . . . Undetermined problems . . . . . FRU replacement notices . . . . . Screw notices . . . . . . . . Retaining serial numbers. . . . . Removing and replacing a FRU. . . . 1010 Battery pack. . . . . . . 1020 DIMM . . . . . . . . 1030 Mini PCI adapter . . . . . © Copyright IBM Corp. 2001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v 1040 Backup battery . . . . . . . . 1050 Hard-disk drive or RF ID adapter . . 1060 Ultrabay 2000 device . . . . . . 1070 Keyboard . . . . . . . . . 1080 Keyboard CRU insulator . . . . . 1090 Hinge cover and clear sheet icon . . 1100 Keyboard bezel and speaker . . . . 1110 Microphone and speaker cable . . . 1120 Sub card . . . . . . . . . . 1130 PC Card slot assembly . . . . . 1140 Fan assembly . . . . . . . . 1150 Diskette drive . . . . . . . . 1160 Upper shield. . . . . . . . . 1170 TV card . . . . . . . . . . 1180 CPU socket and CPU . . . . . . 1190 System board and RJ45/11 connector assembly . . . . . . . . . . Thermal rubbers location. . . . . . . 2010 LCD assembly . . . . . . . . 2020 Front bezel . . . . . . . . . 2030 Inverter card . . . . . . . . 2040 LCD panel . . . . . . . . . 3010 ThinkPad Dock PCI cover . . . . 3020 ThinkPad Dock top cover . . . . Locations . . . . . . . . . . . . Front view. . . . . . . . . . . Rear view . . . . . . . . . . . Bottom view . . . . . . . . . . Parts list . . . . . . . . . . . . A series model matrix . . . . . . . Overall . . . . . . . . . . . AC adapter . . . . . . . . . . LCD FRUs . . . . . . . . . . Keyboard . . . . . . . . . . . Recovery CDs . . . . . . . . . Miscellaneous parts . . . . . . . . Optional FRUs . . . . . . . . . Common parts list . . . . . . . . Notices . . . . . . . . . . . . Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 67 69 71 74 75 76 78 80 82 83 85 87 88 89 . 91 . 93 . 94 . 96 . 99 . 101 . 105 . 107 . 112 . 112 . 113 . 114 . 115 . 115 . 123 . 136 . 136 . 140 . 141 . 145 . 147 . 148 . 150 . 150 vi ThinkPad A20m/p, A21m/p, A22m/p Introduction Important service information Important BIOS and device driver fixes are customer-installable. The BIOS and device drivers are posted on the IBM support site http://www.ibm.com/pc/support Advise customers to contact the PC Company HelpCenter at 800-772-2227 if they need assistance in obtaining or installing any diskette fixes. Customers in Canada should call IBM HelpPC at 800-565-3344 for assistance or download information. Strategy for replacing FRUs Before replacing parts Make sure that all diskette fixes are installed before replacing any FRUs listed in this manual. Use the following strategy to prevent unnecessary FRU replacement and service expense: v If you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the original FRU before you continue. v Some computers have both a processor board and a system board. If you are instructed to replace either the processor board or the system board, and replacing one of them does not correct the problem, reinstall that board, and then replace the other one. v If an adapter or device consists of more than one FRU, any of the FRUs may be the cause of the error. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the FRU that changed the symptoms. Attention: The setup configuration on the computer you are servicing may have been customized. Running Automatic Configuration may alter the settings. Note the current configuration settings (using the View Configuration option); then, when service has been completed, verify that those settings remain in effect. © Copyright IBM Corp. 2001 1 Important service information Strategy for replacing a hard-disk drive Always try to run a low-level format before replacing a hard-disk drive. Attention: The drive startup sequence in the computer you are servicing may have been changed. Be extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect drive, data or programs can be overwritten. How to use error messages Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed, begin the diagnosis with the first error code. Whatever causes the first error code may also cause false error codes. If no error code is displayed, see if the error symptom is listed in the Symptom-to-FRU Index for the computer you are servicing. Diskette compatibility matrix The compatibility of each of the drives with the diskettes for it is as follows: Diskette drive 3.5-inch Diskette capacity 1.0 MB 2.0 MB 4.0 MB Compatibility Read and write Read and write Not compatible 2 ThinkPad A20m/p, A21m/p, A22m/p Safety notices Safety notices: multilingual translations In this manual, safety notices appear in English with a page number reference to the appropriate multi-lingual, translated safety notice found in this section. The following safety notices are provided in English, French, German, Italian, and Spanish languages. Safety notice 1 Before the computer is powered-on after FRU replacement, make sure all screws, springs, and other small parts are in place and are not left loose inside the computer. Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical shorts. Avant de remettre l'ordinateur sous tension après remplacement d'une unité en clientèle, vérifiez que tous les ressorts, vis et autres pièces sont bien en place et bien fixées. Pour ce faire, secouez l'unité et assurez-vous qu'aucun bruit suspect ne se produit. Des pièces métalliques ou des copeaux de métal pourraient causer un court-circuit. Bevor nach einem FRU-Austausch der Computer wieder angeschlossen wird, muß sichergestellt werden, daß keine Schrauben, Federn oder andere Kleinteile fehlen oder im Gehäuse vergessen wurden. Der Computer muß geschüttelt und auf Klappergeräusche geprüft werden. Metallteile oder-splitter können Kurzschlüsse erzeugen. Prima di accendere l'elaboratore dopo che é stata effettuata la sostituzione di una FRU, accertarsi che tutte le viti, le molle e tutte le altri parti di piccole dimensioni siano nella corretta posizione e non siano sparse all'interno dell'elaboratore. Verificare ciò scuotendo l'elaboratore e prestando attenzione ad eventuali rumori; eventuali parti o pezzetti metallici possono provocare cortocircuiti pericolosi. Antes de encender el sistema despues de sustituir una FRU, compruebe que todos los tornillos, muelles y demás piezas pequeñas se encuentran en su sitio y no se encuentran sueltas dentro del sistema. Compruébelo agitando el sistema y escuchando los posibles ruidos que provocarían. Las piezas metálicas pueden causar cortocircuitos eléctricos. Introduction 3 Safety notices Safety notice 2 DANGER Some standby batteries contain a small amount of nickel and cadmium. Do not disassemble a standby battery, recharge it, throw it into fire or water, or short-circuit it. Dispose of the battery as required by local ordinances or regulations. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery. Certaines batteries de secours contiennent du nickel et du cadmium. Ne les démontez pas, ne les rechargez pas, ne les exposez ni au feu ni à l'eau. Ne les mettez pas en court-circuit. Pour les mettre au rebut, conformez-vous à la réglementation en vigueur. Lorsque vous remplacez la pile de sauvegarde ou celle de l'horloge temps réel, veillez à n'utiliser que les modèles cités dans la liste de pièces détachées adéquate. Une batterie ou une pile inappropriée risque de prendre feu ou d'exploser. Die Bereitschaftsbatterie, die sich unter dem Diskettenlaufwerk befindet, kann geringe Mengen Nickel und Cadmium enthalten. Sie darf nur durch die Verkaufsstelle oder den IBM Kundendienst ausgetauscht werden. Sie darf nicht zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden. Die Batterie kann schwere Verbrennungen oder Verätzungen verursachen. Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen der Bereitschafts-oder Systembatterie nur Batterien des T ...