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IBM Mobile Systems

S10L-9625-01

ThinkPad i Series 1400 (2611) Hardware Maintenance Manual

November 1998

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Before using this information and the product it supports, be sure to read the general information under "Read This First" on page 19.

First Edition (November 1998) 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 disclaimers 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 in the products or the programs described in this publication at any time. 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 1998. All rights reserved. Note to US Government Users -- Documentation related to restricted rights -- Use, duplication, or disclosure is subject to restrictions set forth in GSA ADP Schedule Contract with IBM Corp.

About This Manual
This manual contains service and reference information for IBM ThinkPad i Series 1400 (2611) products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. The manual is divided into sections as follows: The Introduction section provides general information, guidelines, and safety information required to service computers. The product-specific section includes service, reference, and product-specific parts information. Important This manual is intended for trained servicers 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 (Multi-lingual Translations)" on page 4 and "Safety Information" on page 11.

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Related Publications
The following product publications are available through IBM or your IBM Authorized Dealer.
Publication Mobile Systems HMM Volume 1: Laptop, Notebook, Portable, and ThinkPad Computers (Models L40, CL57, N45, N51, P70/P75, ThinkPad 300, 350, 500, 510, 710T, Expansion Unit, Dock I, Dock II) Mobile Systems HMM Volume 2: ThinkPad Computers (Models 340, 355, 360, 370, 700, 701, 720, 750, 755) Mobile Systems HMM Volume 3: ThinkPad Computers (Models 365, 380, 385, 560, 760, SelectaDock) Mobile Systems HMM Volume 4: ThinkPad Computers (Models 380, 385, 560, 760, 765) Part, Form Number 30H2356, S82G-1501-01

30H2357, S82G-1502-03

84H8099, S82G-1503-05

05L1271, S05L-1270-01

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ThinkPad i Series 1400

Related Diskettes
The following diskettes are available through IBM or your IBM Authorized Dealer.
Diskette ThinkPad 300 (2615) Advanced Diagnostics Diskette ThinkPad 350, 350C, 425, 425C (2618) Advanced Diagnostics Diskette ThinkPad 365 (2625) Advanced Diagnostics Diskette ThinkPad 380/385 (2635) Maintenance Diskette ThinkPad 500 (2603) Advanced Diagnostics Diskette ThinkPad 510 (2604) Advanced Diagnostics Diskette ThinkPad 700 (9552) Reference Diskette ThinkPad 700C (9552) Reference Diskette ThinkPad 720/720C (9552) Reference Diskette ThinkPad i Series 1400 (2611) Diagnostic and Utilities diskettes ThinkPad Hardware Maintenance Diskette (for all Models 355, 360, 560, 750, 755, 760) ThinkPad Dock I (3545) Docking Station (3550) Data/Fax Modem FaxConcentrator/A Part, Form Number 33G9361, S33G-9361

A211000, GA21-1000

76H7578, S30H-2498

06J0333, S06J-0333 71G3702, S71G-3702

83G8095, S83G-8095

42G2017, S42G-2017 42G2023, S42G-2023 61G1194, S61G-1194 01K4841, S01K-4841-00

78H5384, S78H-5384

71G4140, S71G-4140 42G2428, S42G-2428 61G1556, S61G-1556 84F8540, S84F-8540

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Contents
Introduction . . . . . . . . . . . . . . . . . . . Important Service Information . . . . . . . . . . . How to Use Error Messages . . . . . . . . . . How to Read POST Error Messages . . . . . . Drive and Diskette Compatibility Matrix . . . . . . . Safety Notices (Multi-lingual Translations) . . . . . Safety Information . . . . . . . . . . . . . . . . General Safety . . . . . . . . . . . . . . . . Electrical Safety . . . . . . . . . . . . . . . . Safety Inspection Guide . . . . . . . . . . . . Handling Electrostatic Discharge-Sensitive Devices Grounding Requirements . . . . . . . . . . . . Laser Compliance Statement . . . . . . . . . . . ThinkPad i Series 1400 Hardware Maintenance Manual . . . . . . . . . . . . . . . . . . . Read This First . . . . . . . . . . . . . . . . How to Use Error Messages . . . . . . . . How to Diagnose Mulitple FRUs . . . . . . What to Do First . . . . . . . . . . . . . . Screw Notices . . . . . . . . . . . . . . . Power-On and Setup Password . . . . . . . . Check Procedures . . . . . . . . . . . . . . Power Systems Check . . . . . . . . . . . System Board Check . . . . . . . . . . . Memory Check . . . . . . . . . . . . . . Keyboard and External Input Device Check . Audio Function Check . . . . . . . . . . . TrackPoint IV Check . . . . . . . . . . . . Diskette Drive Check . . . . . . . . . . . . CD-ROM Drive Check . . . . . . . . . . . Modem Board Check . . . . . . . . . . . BIOS Utility . . . . . . . . . . . . . . . . . . Navigating the BIOS Utility . . . . . . . . . Power Management Features . . . . . . . . . Screen Blanking Mode . . . . . . . . . . . Standby Mode . . . . . . . . . . . . . . . Hibernation Mode . . . . . . . . . . . . . Symptom-to-FRU Index . . . . . . . . . . . . Numeric Error Codes and Messages . . . . Beep Symptoms . . . . . . . . . . . . . . No Beep Symptoms . . . . . . . . . . . . Keyboard/TrackPoint-Related Symptoms . . LCD-Related Symptoms . . . . . . . . . . Indicator-Related Symptoms . . . . . . . . Power-Related Symptoms . . . . . . . . . Memory-Related Symptoms . . . . . . . . Audio-Related Symptoms . . . . . . . . . PC Card (PCMCIA)-Related Symptoms . . . Power Management-Related Symptoms . . . 1 1 2 2 3 4 11 11 12 13 15 15 16

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19 19 19 19 20 21 22 22 24 26 26 27 28 28 29 29 30 30 31 32 32 32 33 33 34 36 36 37 37 38 39 39 39 40 40

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Peripheral-Device-Related Symptom . . . . . Modem-Related Symptoms . . . . . . . . . . Intermittent Problems . . . . . . . . . . . . Undetermined Problems . . . . . . . . . . . Related Service Procedures . . . . . . . . . . . Flash Memory Update . . . . . . . . . . . . Status Indicators . . . . . . . . . . . . . . . Power Switch . . . . . . . . . . . . . . . . Diagnostic Program Diskette . . . . . . . . . Utility Program Diskette . . . . . . . . . . . Fn Key Combinations . . . . . . . . . . . . Product Overview . . . . . . . . . . . . . . . . FRU Removals and Replacements . . . . . . . . Before FRU Removals and Replacements . . . Battery Assembly . . . . . . . . . . . . . . DIMM and DIMM Cover . . . . . . . . . . . Modem Board Cover and Modem Board . . . Keyboard . . . . . . . . . . . . . . . . . . Hard Disk Drive and HDD Heatsink . . . . . . Hard Disk Drive . . . . . . . . . . . . . . . PCMCIA Holder . . . . . . . . . . . . . . . TrackPoint Board . . . . . . . . . . . . . . CPU Heatsink . . . . . . . . . . . . . . . . CPU EMI Bracket and CPU Board . . . . . . RTC Battery (Backup Battery) . . . . . . . . LCD Assembly . . . . . . . . . . . . . . . . Upper Cover (Keyboard Bezel) . . . . . . . . CD Control Card . . . . . . . . . . . . . . . Modem Connector (RJ11 Cable Assembly) . . DC/DC Charger . . . . . . . . . . . . . . . Audio Cable and Speaker Cable . . . . . . . Audio Connector Board . . . . . . . . . . . Fan Assembly . . . . . . . . . . . . . . . . Audio PCB . . . . . . . . . . . . . . . . . Diskette and CD-ROM Drives Assembly . . . . Planar Board . . . . . . . . . . . . . . . . LCD Front Cover . . . . . . . . . . . . . . Speakers . . . . . . . . . . . . . . . . . . Inverter . . . . . . . . . . . . . . . . . . . Indicator Board and Microphone Cable Assembly Hinge . . . . . . . . . . . . . . . . . . . . LCD Panel and LCD Cable . . . . . . . . . . Locations . . . . . . . . . . . . . . . . . . . . Front View . . . . . . . . . . . . . . . . . Bottom View . . . . . . . . . . . . . . . . . Rear View . . . . . . . . . . . . . . . . . . Switch Locations . . . . . . . . . . . . . . . System Unit Parts Listing . . . . . . . . . . . . LCD Unit Parts Listing . . . . . . . . . . . . . . 12.1" LCD Unit Parts Listing . . . . . . . . . 13.3" LCD Unit Parts Listing . . . . . . . . . Miscellaneous Parts . . . . . . . . . . . . . . . Service Tools . . . . . . . . . . . . . . . . . .

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41 42 42 42 43 43 43 45 45 50 51 52 53 54 54 55 56 57 58 59 60 61 61 62 63 63 64 66 67 67 68 69 70 70 71 73 74 75 76 76 77 78 79 79 80 81 81 83 85 85 86 87 87

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Others . . . . . . . . . . . . . . . . . . . . . . 88 Notices . . . . . . . . . . . . . . . . . . . . . . 90 Trademarks . . . . . . . . . . . . . . . . . . . 90

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Introduction
Important Service Information
Important Diskette fixes are customer installable. The diskette fixes are located on the PC Company Bulletin Board Service (BBS). The direct phone line for modem connection is 919-557-0001 or tieline 255-0001. 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 down-load information. The Canadian BBS phone numbers are: Montreal Toronto Vancouver Winnipeg 514-938-3022 905-316-4255 604-664-6464 204-934-2735

FRU Replacement Strategy
Before Replacing Parts Ensure that all diskette fixes are installed prior to replacing any FRUs listed in this manual. Use the following strategy to prevent unnecessary FRU replacement and service expense: If you are instructed to replace a FRU and that does not correct the problem, reinstall the original FRU before you continue. Some computers have both a processor board and a system board. If you are instructed to replace either the processor board or the system board, and the first board that you replaced does not correct the problem, reinstall the original board, then replace the other (processor or system) board. If an adapter or device consists of more than one FRU, an error code may be caused by any of the FRUs. 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.

Introduction

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Attention A customized setup configuration (other than default settings) may exist on the computer you are servicing. Running Automatic Configuration may alter those settings. Note the current configuration settings (using the View Configuration option) and verify that the settings are in place when service is complete.

Hard Disk Drive Replacement Strategy:
Always try to run a low-level format before replacing a hard disk drive. Attention The drive startup sequence in the computer you are servicing might have been changed. Be extremely careful during write operations such as copying, saving, or formatting. Data or programs can be overwritten if you select an incorrect drive.

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. The cause of the first error code can result in false error codes being displayed. If no error code is displayed, see if the error symptom is listed in the Symptom-to-FRU Index for the computer you are servicing.

How to Read POST Error Messages
POST error messages are displayed on the screen as three, four, five, or eight digits. The error messages that can be displayed as shorter POST messages are highlighted in this index. Some digits will represent different information for SCSI errors versus non-SCSI errors. The following example shows which digits display the shorter POST error messages and also defines the SCSI information in an eight-digit error message.
Shorter POST Messages Reserved Size (SCSI) Slot Number (SCSI) Device Code Logical Unit Number (SCSI) ID (SCSI)

All SCSI devices are set to a different SCSI ID. Duplicate SCSI ID settings can generate a false error message. Use the SCSI ID to determine whether the error message is coming from an internal or an external device.

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ThinkPad i Series 1400

Drive and Diskette Compatibility Matrix
The following table provides identification information for 3.5-inch drives.
Diskette Drive 3.5-Inch - 1.44MB 3.5-Inch - 2.88MB Identifying Mark 1.44 on the eject button 2.88 on the eject button

The following table provides compatibility information for 3.5-inch diskettes and 3.5-inch diskette drives.
Diskette Capacity 1.0MB 2.0MB 4.0MB 1.44MB Drive Read/Write Read/Write Not Compatible 2.88MB Drive Read/Write Read/Write Read/Write

The following table provides identification information for 5.25-inch diskette drives.
Diskette Drive 5.25-Inch - 360KB (External) 5.25-Inch - 1.2MB (Internal) Identifying Mark Asterisk on bezel 1.2 on the eject button

The following table provides compatibility information for 5.25-inch diskettes and 5.25-inch diskette drives.
Diskette Capacity 360KB 1.2MB 360KB Drive Read/Write Not Compatible 1.2MB Drive Read/Write Read/Write

Note: A 360KB diskette written to or formatted on a 1.2MB drive can be read reliably only on a 1.2MB drive.

Introduction

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Safety Notices (Multi-lingual 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, or other small parts are in place and are not left loose inside the computer. Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical shorts. Avant de remettre l'ordinateur sous tension après remplacement d'une unité en clientèle, vérifiez que tous les ressorts, vis et autres pièces sont bien en place et bien fixées. Pour ce faire, secouez l'unité et assurez-vous qu'aucun bruit suspect ne se produit. Des pièces métalliques ou des copeaux de métal pourraient causer un court-circuit. Bevor nach einem FRU-Austausch der Computer wieder angeschlossen wird, 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.

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Safety Notice 2 Some standby batteries contain a small amount of nickel and cadmium. Do not disassemble it, recharge it, throw it into fire or water, or short-circuit it. Dispose of the battery as required by local ordinances or regulations. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery. Certaines batteries de secours contiennent du nickel et du cadmium. Ne les démontez pas, ne les rechargez pas, ne les exposez ni au feu ni à l'eau. Ne les mettez pas en court-circuit. Pour les mettre au rebut, conformez-vous à la réglementation en vigueur. Lorsque vous remplacez la pile de sauvegarde ou celle de l'horloge temps réel, veillez à n'utiliser que les modèles cités dans la liste de pièces détachées adéquate. Une batterie ou une pile inappropriée risque de prendre feu ou d'exploser. Die Bereitschaftsbatterie, die sich unter dem Diskettenlaufwerk befindet, kann geringe Mengen Nickel und Cadmium enthalten. Sie darf nur durch die Verkaufsstelle oder den IBM Kundendienst ausgetauscht werden. Sie darf nicht zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden. Die Batterie kann schwere Verbrennungen oder Verätzungen verursachen. Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen der Bereitschafts- oder Systembatterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder Explosion führen. Alcune batterie di riserva contengono una piccola quantità di nichel e cadmio. Non smontarle, ricaricarle, gettarle nel fuoco o nell'acqua né cortocircuitarle. Smaltirle secondo la normativa in vigore (DPR 915/82, successive disposizioni e disposizioni locali). Quando si sostituisce la batteria dell'RTC (real time clock) o la batteria di supporto, utilizzare soltanto i tipi inseriti nell'appropriato Catalogo parti. L'impiego di una batteria non adatta potrebbe determinare l'incendio o l'esplosione della batteria stessa. Algunas baterías de reserva contienen una pequeña cantidad de níquel y cadmio. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Deséchelas tal como dispone la normativa local. Utilice sólo baterías que se encuentren en la lista de piezas. La utilización de una batería no apropiada puede provocar la ignición o explosión de la misma.

Introduction

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Safety Notice 3 The battery pack contains small amounts of nickel. Do not disassemble it, throw it into fire or water, or short-circuit it. Dispose of the battery pack as required by local ordinances or regulations. Use only the battery in the appropriate parts listing when replacing the battery pack. Use of an incorrect battery can result in ignition or explosion of the battery. La batterie contient du nickel. Ne la démontez pas, ne l'exposez ni au feu ni à l'eau. Ne la mettez pas en court-circuit. Pour la mettre au rebut, conformez-vous à la réglementation en vigueur. Lorsque vous remplacez la batterie, veillez à n'utiliser que les modèles cités dans la liste de pièces détachées adéquate. En effet, une batterie inappropriée risque de prendre feu ou d'exploser. Akkus enthalten geringe Mengen von Nickel. Sie dürfen nicht zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden. Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder Explosion führen. La batteria contiene piccole quantità di nichel. Non smontarla, gettarla nel fuoco o nell'acqua né cortocircuitarla. Smaltirla secondo la normativa in vigore (DPR 915/82, successive disposizioni e disposizioni locali). Quando si sostituisce la batteria, utilizzare soltanto i tipi inseriti nell'appropriato Catalogo parti. L'impiego di una batteria non adatta potrebbe determinare l'incendio o l'esplosione della batteria stessa. 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.

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Safety Notice 4 The lithium battery can cause a fire, explosion, or severe burn. Do not recharge it, remove its polarized connector, disassemble it, heat it above 100°C (212°F), incinerate it, or expose its cell contents to water. Dispose of the battery as required by local ordinances or regulations. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery. La pile de sauvegarde contient du lithium. Elle présente des risques d'incendie, d'explosion ou de brûlures graves. Ne la rechargez pas, ne retirez pas son connecteur polarisé et ne la démontez pas. Ne l'exposez pas à une temperature supérieure à 100°C, ne la faites pas brûler et n'en exposez pas le contenu à l'eau. Mettez la pile au rebut conformément à la réglementation en vigueur. Une pile inappropriée risque de prendre feu ou d'exploser. Die Systembatterie ist eine Lithiumbatterie. Sie kann sich entzünden, explodieren oder schwere Verbrennungen hervorrufen. Batterien dieses Typs dürfen nicht aufgeladen, zerlegt, über 100 C erhitzt oder verbrannt werden. Auch darf ihr Inhalt nicht mit Wasser in Verbindung gebracht oder der zur richtigen Polung angebrachte Verbindungsstecker entfernt werden. Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder Explosion führen. La batteria di supporto e una batteria al litio e puo incendiarsi, esplodere o procurare gravi ustioni. Evitare di ricaricarla, smontarne il connettore polarizzato, smontarla, riscaldarla ad una temperatura superiore ai 100 gradi centigradi, incendiarla o gettarla in acqua. Smaltirla secondo la normativa in vigore (DPR 915/82, successive disposizioni e disposizioni locali). L'impiego di una batteria non adatta potrebbe determinare l'incendio o l'esplosione della batteria stessa. La bateria de repuesto es una bateria de litio y puede provocar incendios, explosiones o quemaduras graves. No la recargue, ni quite el conector polarizado, ni la desmonte, ni caliente por encima de los 100°C (212°F), ni la incinere ni exponga el contenido de sus celdas al agua. Deséchela tal como dispone la normativa local.

Introduction

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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.

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Safety Notice 6 To avoid shock, do not remove the plastic cover that surrounds the lower portion of the inverter card. Afin d'éviter tout risque de choc électrique, ne retirez pas le cache en plastique protégeant la partie inférieure de la carte d'alimentation. Aus Sicherheitsgründen die Kunststoffabdeckung, die den unteren Teil der Spannungswandlerplatine umgibt, nicht entfernen. Per evitare scosse elettriche, non rimuovere la copertura in plastica che avvolge la parte inferiore della scheda invertitore. Para evitar descargas, no quite la cubierta de plástico que rodea la parte baja de la tarjeta invertida. Safety Notice 7 Though main batteries have low voltage, a shorted or grounded battery can produce enough current to burn combustible materials or personnel. Bien que le voltage des batteries principales soit peu élevé, le court-circuit ou la mise à la masse d'une batterie peut produire suffisamment de courant pour brûler des matériaux combustibles ou causer des brûlures corporelles graves. Obwohl Hauptbatterien eine niedrige Spannung haben, können sie doch bei Kurzschluß oder Erdung genug Strom abgeben, um brennbare Materialien zu entzünden oder Verletzungen bei Personen hervorzurufen. Sebbene le batterie di alimentazione siano a basso voltaggio, una batteria in corto circuito o a massa può fornire corrente sufficiente da bruciare materiali combustibili o provocare ustioni ai tecnici di manutenzione. Aunque las baterías principales tienen un voltaje bajo, una batería cortocircuitada o con contacto a tierra puede producir la corriente suficiente como para quemar material combustible o provocar quemaduras en el personal.

Introduction

9

Safety Notice 8 Before removing any FRU, power-off the computer, unplug all power cords from electrical outlets, remove the battery pack, then disconnect any interconnecting cables. Avant de retirer une unité remplaçable en clientèle, mettez le système hors tension, débranchez tous les cordons d'alimentation des socles de prise de courant, retirez la batterie et déconnectez tous les cordons d'interface. Die Stromzufuhr 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.

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ThinkPad i Series 1400

Safety Information
The following section contains the safety information that you need to be familiar with before servicing an IBM mobile computer.

General Safety
Follow these rules to ensure general safety: Observe good housekeeping in the area of the machines during and after maintenance. When lifting any heavy object: 1. Ensure you can stand safely without slipping. 2. Distribute the weight of the object equally between your feet. 3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift. 4. Lift by standing or by pushing up with your leg muscles; this action removes the strain from the muscles in your back. Do not attempt to lift any objects that weigh more than 16 kg (35 lb) or objects that you think are too heavy for you. Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe. Before you start the machine, ensure that other service representatives and the customer's personnel are not in a hazardous position. Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine. Keep your tool case away from walk areas so that other people will not trip over it. Do not wear loose clothing that can be trapped in the moving parts of a machine. Ensure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it. Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip, approximately 8 centimeters (3 inches) from the end. Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing. Attention: Metal objects are good electrical conductors. Wear safety glasses when you are: hammering, drilling soldering, cutting wire, attaching springs, using solvents, or working in any other conditions that might be hazardous to your eyes. After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective. Reinstall all covers correctly before returning the machine to the customer.

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Electrical Safety
Observe the following rules when working on electrical equipment. Important Use only approved tools and test equipment. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. Many customers have, near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges. Do not use this type of mat to protect yourself from electrical shock. Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly. Do not work alone under hazardous conditions or near equipment that has hazardous voltages. Disconnect all power before: Performing a mechanical inspection Working near power supplies Removing or installing main units Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer to power-off the wall box that supplies power to the machine and to lock the wall box in the off position. If you need to work on a machine that has exposed electrical circuits, observe the following precautions: Ensure that another person, familiar with the power-off controls, is near you. Attention: Another person must be there to switch off the power, if necessary. Use only one hand when working with powered-on electrical equipment; keep the other hand in your pocket or behind your back. Attention: There must be a complete circuit to cause electrical shock. 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; these instructions are in the safety sections of maintenance information. Use extreme care when measuring high voltages.

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Regularly inspect and maintain your electrical hand tools for safe operational condition. Do not use worn or broken tools and testers. Never assume that power has been disconnected from a circuit. First, check that it has been powered-off. Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds. Do not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is conductive; such touching can cause personal injury and machine damage. Do not service the following parts with the power on when they are removed from their normal operating places in a machine: Power supply units Pumps Blowers and fans Motor generators and similar units. (This practice ensures correct grounding of the units.) If an electrical accident occurs: Use caution; do not become a victim yourself. Switch off power. Send another person to get medical aid.

Safety Inspection Guide
The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these products. Each machine, as it was designed and built, had required safety items installed to protect users and service personnel from injury. This guide addresses only those items. However, good judgment should be used 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: Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal electrical shock). Explosive hazards, such as a damaged CRT face or bulging capacitor Mechanical hazards, such as loose or missing hardware

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The guide consists of a series of steps presented in a checklist. Begin the checks with the power off, and the power cord disconnected. Checklist: 1. Check exterior covers for damage (loose, broken, or sharp edges). 2. Power-off the computer. Disconnect the power cord. 3. Check the power cord for: a. A third-wire ground connector in good condition. Use a meter to measure third-wire ground continuity for 0.1 ohm or less between the external ground pin and frame ground. b. The power cord should be the appropriate type as specified in the parts listings. c. Insulation must not be frayed or worn. 4. Remove the cover. 5. Check for any obvious non-IBM alterations. Use good judgment as to the safety of any non-IBM alterations. 6. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage. 7. Check for worn, frayed, or pinched cables. 8. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with.

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Handling Electrostatic Discharge-Sensitive Devices
Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge. Notes 1. Use product-specific ESD procedures when they exceed the requirements noted here. 2. Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective. When handling ESD-sensitive parts: Keep the parts in protective packages until they are inserted into the product. Avoid contact with other people. Wear a grounded wrist strap against your skin to eliminate static on your body. Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap. Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices. Select a grounding system, such as those listed below, to provide protection that meets the specific service requirement. Note The use of a grounding system is desirable but not required to protect against ESD damage. Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground. Use an ESD common ground or reference point when working on a double-insulated or batteryoperated system. You can use coax or connector-outside shells on these systems. Use the round ground-prong of the AC plug on AC-operated computers.

Grounding Requirements
Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician.

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Laser Compliance Statement
Some IBM Personal Computer models are equipped from the factory with a CD-ROM drive. CD-ROM drives are also sold separately as options. The CD-ROM drive is a laser product. The CD-ROM drive is certified in the U.S. to conform to the requirements of the Department of Health and Human Services 21 Code of Federal Regulations (DHHS 21 CFR) Subchapter J for Class 1 laser products. Elsewhere, the drive is certified to conform to the requirements of the International Electrotechnical Commission (IEC) 825 and CENELEC EN 60 825 for Class 1 laser products. When a CD-ROM drive is installed, note the following.

CAUTION: Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure. O uso de controles, ajustes ou desempenho de procedimentos diferentes daqueles aqui especificados pode resultar em perigosa exposição à radiação.

Pour éviter tout risque d'exposition au rayon laser, respectez les consignes de réglage et d'utilisation des commandes, ainsi que les procédures décrites. Werden Steuer- und Einstellelemente anders als hier festgesetzt verwendet, kann gefährliche Laserstrahlung auftreten.

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

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El uso de controles o ajustes o la ejecución de procedimientos distintos de los aquí especificados puede provocar la exposición a radiaciones peligrosas. Opening the CD-ROM drive could result in exposure to hazardous laser radiation. There are no serviceable parts inside the CD-ROM drive. Do not open. Some CD-ROM drives contain an embedded Class 3A or Class 3B laser diode. Note the following. DANGER: Laser radiation when open. Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam. Radiação por raio laser ao abrir. Não olhe fixo no feixe de luz, não olhe diretamente por meio de instrumentos óticos e evite exposição direta com o feixe de luz.

Rayonnement laser si carter ouvert. Évitez de fixer le faisceau, de le regarder directement avec des instruments optiques, ou de vous exposer au rayon. Laserstrahlung bei geöffnetem Gerät. Nicht direkt oder über optische Instrumente in den Laserstrahl sehen und den Strahlungsbereich meiden. Kinyitáskor lézersugár ! Ne nézzen bele se szabad szemmel, se optikai eszközökkel. Kerülje a sugárnyalábbal való érintkezést ! Aprendo l'unità vengono emesse radiazioni laser. Non fissare il fascio, non guardarlo direttamente con strumenti ottici e evitare l'esposizione diretta al fascio.

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

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ThinkPad i Series 1400 Hardware Maintenance Manual
Read This First
Before you go to the check procedures, be sure to read this section. Important Notes Only certified trained personnel should service the computer. Read the FRU service procedures before replacing any FRUs. Be extremely careful during write operations such as copying, saving, or formatting. Drives in the computer that you are servicing might have been rearranged or the drive startup sequence might have been altered. If you select an incorrect drive, data or programs could be overwritten. Ensure that you replace FRUs with the appropriate model. When you replace the FRU, make sure that the model of the machine and FRU part number are correct by referring to the part list. FRUs should not be replaced because of a single, unreproducible failure. Single failure can occur for a variety of reasons that have nothing to do with a hardware defect, such as: cosmic radiation, electrostatic discharge, or software error. FRU replacement should be considered only when a recurring problem exists. In this case, clear the error log and run the test again. Do not replace FRUs if log errors do not reappear. Be careful not to replace a non-defective FRU.

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. The cause of the first error code can result in the other false error codes being displayed.

How to Diagnose Mulitple FRUs
If the adapter or device has more than one FRU, the error code could be caused by either FRU. Before replacing multiple FRUs, try removing or exchanging each FRU one by one in the designated sequence, to see if the symptoms change.

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What to Do First
The servicer must include the following in the parts exchange form or parts return form that is attached to the returned FRU: 1. Name and phone number of servicer. 2. Date of service. 3. Date when part failed. 4. Date of purchase. 5. Failure symptoms, error codes appearing on display, and beep symptoms. 6. Procedure index and page number in which 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. Before checking problems with the computer, determine whether or not the damage applies to the warranty by referring to the following: Note for Warranty: During the warranty period, the customer may be responsible for repair costs if the computer damage was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper maintenance by the customer. The following list provides some common items that are not covered under warranty and some symptoms that may indicate the system was subjected to stresses beyond normal use: The following is not covered under warranty: LCD panel cracked by applying excessive force or by being dropped. Scratched (cosmetic) parts. Cracked or broken plastic parts, broken latches, broken pins, or broken connectors caused by excessive force. Damage caused by liquid spilled into the system. Damage caused by improperly inserting a PCMCIA card or installation of an incompatible card. Diskette drive damage caused by pressing the diskette drive cover or inserting diskettes with multiple labels. Damaged or bent diskette drive eject button. CD-ROM drive damage caused by excessive force, shock, or by being dropped. Fuses blown by attaching a nonsupported device. Forgotten computer password (making computer unusable).

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If the following symptoms are present, they may indicate damage caused by by non-warranted activity: Missing parts may be a symptom of unauthorized service or modification. HDD spindles can become noisy if subjected to excessive force or by being dropped.

Screw Notices
This computer uses special nylon-coated screws with the following characteristics: They maintain tight connections. They do not easily come loose, even with shock or vibration. They need additional force to tighten. They should be used only once. Do the following when you service this machine: Keep the screw kit (P/N 05K4841) in your tool bag. Always use new screws if you are instructed. Use a torque screwdriver if you have one. Loose screws can cause a reliability problem. The IBM ThinkPad computer addresses this problem with nyloncoated screws. Tighten screws as follows: Plastic to plastic Turn an additional 90 degrees after the screw head touches the surface of the plastic part:

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

Torque driver

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If you have a torque driver, refer to the "Torque" column with each step. Make sure you use the correct screw, and tighten all screws firmly to the torque shown in the table if you have a torque screwdriver. Never use a screw that you removed. Use a new one. Make sure the screws are tightened firmly

Power-On and Setup Password
To clear a password from the system, first identify the system password switch by referring to "Switch Locations" on page 81, then follow these steps: 1. Turn off the computer. 2. Unplug the AC Adapter and remove the battery. 3. Remove the keyboard by referring to "Keyboard" on page 57, and the thermal plate by referring to "Hard Disk Drive and HDD Heatsink" on page 58. 4. Move the password switch (SW2, switch 2) from OFF to ON to bypass the password. Note: SW2 has four switches; the second upper switch (switch 2) is the password bypass/check switch. Turning the switch to the left (ON position) is "bypass password"; the right (OFF position) is "check password". Refer to "Switch Locations" on page 81. 5. Plug in the AC adapter and turn on the system. 6. While the ThinkPad logo is being displayed, wait for a beep before pressing F1 to enter the BIOS Utility. 7. Select "System Security" from the BIOS Utility main menu and press Enter. 8. Set the "Power-On Password" setting to "None" to clear the password. 9. Save and exit the BIOS Utility. 10. Turn off the system and unplug the AC Adapter. 11. Move the password switch from ON to OFF to enable the password function. 12. Reinstall the thermal plate and keyboard. 13. Reinstall the battery pack and plug in the AC Adapter. To use the password function again, enter the BIOS Utility and set a password.

Check Procedures
Use the following procedure as a guide for computer problems.

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Notes: 1. The diagnostic tests are intended to test only IBM products. Non-IBM products, prototype cards, or modified options can give false errors and invalid system responses. 2. Some test items require tools as shown below: Audio Wrap cable (P/N: 66G5180) FDD: Eraseable 2HD diskette Parallel Wrap plug (P/N: 72X8546) Parallel test cable (P/N: 05K2580) Serial: Wrap plug (P/N: 72X8546) Screwdriver Kit (P/N: 95F3598) Screwdriver Kit (P/N: 05K4693) Torque Screwdriver (P/N: 05K4695) 5mm Socket Wrench (P/N: 05K4694) PCMCIA: PC test card (P/N: 35G4703) CD-ROM: Any data and audio CDs ThinkPad i Series 1400 Diagnostics Diskette (P/N: 01K4841) ThinkPad i Series 1400 Utility Diskette (P/N: 01K4842) 1. Obtain the failing symptoms in as much detail as possible. 2. Verify the symptoms by attempting to recreate the failure by running the diagnostic test or by repeating the same operation. 3. Use the following table with the verified symptom to determine which page to go to. Search the symptoms column and find the description that best matches your symptom; then go to the page shown in the "Go to" column.
Symptoms (Verified) Power failure. (The power-on indicator does not go on or stay on.) POST does not complete. No beeps or error codes/messages are indicated. POST detected an error and displayed numeric error code with error message. Other symptoms Go to "Power Systems Check" on page 24, then use table in "Power-Related Symptoms" on page 39. "Symptom-to-FRU Index" on page 33, then use table in "No Beep Symptoms" on page 36. "Symptom-to-FRU Index" on page 33. Appropriate check instructions in this section, then use appropriate tables in "Symptom-to-FRU Index" on page 33.

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Power Systems Check
To verify the symptom of the problem power on the computer using each of the power sources as follows: 1. Remove the battery pack, diskette drive, and hard disk drive. 2. Connect the AC Adapter and check that power is supplied. 3. Install the diskette drive or hard disk drive one at a time, and check that power is supplied from each power source. If you suspect a power problem, refer the the appropriate power supply check listed below: "Checking the AC Adapter" "Checking the Operational Charging" on page 25 "Checking the Battery Pack" on page 25

Checking the AC Adapter:

If the computer fails only when the AC Adapter is used or if the power-on indicator of the AC Adapter does not turn on, make sure of the following: Power cord is not damaged. Power cord is securely connected to the AC Adapter and AC power outlet.

If the above confirmation does not solve the problem, replace the AC Adapter. If the power-on indicator of the AC Adapter is on, then proceed to the next step. 1. Unplug the AC Adapter cable from the computer and measure the output voltage at the plug of the AC Adapter cable.
Pin 1 2 Voltage (V dc) 19.0 20.5 Ground

If the measured voltage is correct, replace the system board. If the problems still persist, go to "Undetermined Problems" on page 42. If the voltage is not correct, go to the next step. 2. Unplug the AC Adapter cable from the AC power outlet and wait for five minutes or longer to allow the

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over-voltage protection circuit of the AC Adapter to be fully discharged and initialized. 3. Plug the AC Adapter cable into the AC power outlet. 4. Measure the output voltage of the AC Adapter. 5. If the voltage is still not correct, replace the AC Adapter. Note: An audible noise from the AC Adapter does not always indicate a defective adapter.

Checking the Operational Charging: To check operational charging, 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: 1. If the battery indicator does not turn on, remove the battery pack and leave it to return to room temperature. 2. Reinstall the battery pack. If the charge indicator still does not turn on, replace the battery pack.

Checking the Battery Pack:
battery pack, do the following: 1. Power off the computer.

To check the

2. Remove the battery pack and measure the voltage between battery terminals 2(+) and 7(-). See the following figure:

Terminal 1 2 3 4 5 6 7

Signal / Voltage (V dc) Sense Power ( > 8 V dc) Reserved Reserved Thermal Sense Ground

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Note: Signal lines, not used in these steps, are used for communications between the system and the battery. 3. If the voltage is less than +8 V dc, the battery pack. If the voltage is still less than +8 V dc after recharging, replace the battery.

System Board Check
The system board performs processing functions. Thus, the system board can cause processor problems. To verify the problem, do the following: 1. Boot from the diagnostics diskette and start the PQA program (please refer to "Running the PQA Diagnostics Program" on page 46). 2. Run the System Board test to verify the symptom. This test verifies both the system board and the CPU board. If the tests detect a system board problem, replace the system board. Note: Don't touch the keyboard and pointing device when the system board test is running. This may cause an unexpected error.

Memory Check
DIMM are available for increasing memory capacity.
DIMM 32MB 0MB 32MB 64MB 0MB 64MB 32MB 64MB 128MB 0MB 128MB 32MB 128MB 64MB 128MB DIMM 0MB 32MB 32MB 0MB 64MB 32MB 64MB 64MB 0MB 128MB 32MB 128MB 64MB 128MB 128MB Total Memory 32MB 32MB 64MB 64MB 64MB 96MB 96MB 128MB 128MB 128MB 160MB 160MB 192MB 192MB 256MB

CAUTION: This system cannot work without DIMM memory. Memory errors might stop system operation, show error messages on the screen, or hang the system.

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Use the following procedure to isolate memory problems: Note: Make sure that the DIMM is properly installed into the connector. A loose connection can cause an error. 1. Power off the computer and replace the DIMM. 2. Boot from the diagnostics diskette and start the PQA program (please refer to "Running the PQA Diagnostics Program" on page 46). 3. Run the Memory item to run the memory test. If no error appears, install a new DIMM; if an error appears, replace the system board.

Keyboard and External Input Device Check
Note: If an external keyboard is attached, remove it if the internal keyboard has to be tested. If the internal keyboard does not work or an unexpected character appears, make sure that the flexible cable extending from the keyboard is correctly seated in the connector on the TrackPoint board. If the tests do not detect a keyboard problem, run the Keyboard test by doing the following: 1. Boot from the diagnostics diskette and start the PQA program (please refer to "Running the PQA Diagnostics Program" on page 46). 2. Go to Diag and select Manual Test, then choose Keyboard from the Test Item and press F2 to execute. 3. Check that when each key is pressed, the key's position on the keyboard layout on the screen changes to a black square. Note: Press Y+Enterto close the test. If the test detects a keyboard problem, do the following one at a time to correct the problem. Do not replace a nondefective FRU. Ensure the keyboard switch is correctly set. Reconnect the keyboard flexible cables. Replace the TrackPoint board. Replace the keyboard. Replace the system board. The following external input devices are supported for this computer: Numeric keypad Mouse (PS/2 compatible) Keyboard

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If any of these devices do not work, reconnect the cable connector and repeat the failing operation. If the problem still exists, replace the device, and then the system board.

Audio Function Check
Do as follows: 1. Boot from the diagnostics diskette and start the PQA program (please refer to "Running the PQA Diagnostics Program" on page 46). 2. If the test detects an audio board problem, do the following actions, one at a time, to correct the problem. Do not replace a non-defective FRU. Check the speaker and the speaker connections. Replace the Audio I/O board. Replace the Audio and Battery Function Connection Board. Replace the system board.

TrackPoint IV Check
The TrackPoint does automatic compensations to adjust the pointer sensor. During this process, the pointer moves on the screen automatically for a short time. This selfacting pointer movement can occur when a slight, steady pressure is applied to the TrackPoint pointer while the computer is powered on or while the system is running, or when readjustment is required because the temperature has exceeded its normal temperature range. This symptom does not indicate a hardware problem. No service actions are necessary if the pointer movement stops in a short period of time. If a click button problem or pointing stick problem occurs, do the following: 1. Boot from the diagnostics diskette and start the PQA program (please refer to "Running the PQA Diagnostics Program" on page 46). 2. Go to Diag and select Manual Test, then choose Pointing Dev. from the Test Item and press F2 to execute. If either the pointing stick or the click button does not work, do the following actions one a time to correct the problem. Do not replace a non-defective FRU. 1. Reconnect the keyboard flexible cables and the TrackPoint flexible cable. 2. Replace the TrackPoint board. 3. Replace the keyboard. 4. Replace the system board.

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Diskette Drive Check
Do the following to isolate the problem to a controller, drive, or diskette. A scratch, write-enabled, non-defective, high-density (2HD) diskette is required. CAUTION: Make sure that the diskette does not have more than one label attached to it. Multiple labels can cause damage to the drive or can cause the drive to fail. Do the following to select the test device: 1. Boot from the diagnostics diskette and start the PQA program (please refer to "Running the PQA Diagnostics Program" on page 46). 2. Go to Diag and select Manual Test, then choose Diskette Drive from the Test Item and press F2 to execute. If an error occurs with the internal diskette drive, reconnect the connector on the system board. If the error still remains: 1. Reconnect the diskette drive cable. 2. Replace the diskette drive cable. 3. Replace the diskette drive. 4. Replace the system board.

CD-ROM Drive Check
Do the following to isolate the problem to a controller, drive, or CD-ROM. Make sure that the CD-ROM disc does not have any label attached to it. The label can cause damage to the drive or can cause the drive to fail. Do the following to select the test device: 1. Boot from the diagnostics diskette and start the PQA program (please refer to "Running the PQA Diagnostics Program" on page 46). 2. Go to Diag and select Manual Test, then choose CD-ROM from the Test Item and press F2 to execute. If an error occurs, reconnect the connector on the system board. If the error still remains: 1. Reconnect the CD-ROM drive cable. 2. Replace the CD-ROM drive cable. 3. Replace the CD-ROM drive. 4. Replace the system board.

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Modem Board Check
Do the following to isolate the problem to the system internal modem: 1. Boot from the diagnostics diskette and start the PQA program (please refer to "Running the PQA Diagnostics Program" on page 46). 2. Follow the instructions on the screen to complete the test. If an error occurs with the internal modem, do the following: 1. Change to another telephone line and test again. 2. Re-plug the telephone connector. 3. Reconnect the modem board. 4. Replace the modem connector. 5. Replace the system board.

BIOS Utility
Your computer has a BIOS Utility that allows you to configure the computer and its hardware settings. Note: The computer is also bundled with a Windowsbased computer management utility called the Notebook manager that is similar in function to the BIOS Utility. The computer is already correctly configured for you. If you make any changes to the computer or you receive an Equipment Configuration Error message (error code 246) after you turn on the computer, you need to run the BIOS Utility. The BIOS Utility has the following functions: Change the system date or time Set the power-saving modes and timers Set, change, or remove a system password Change the system boot drive or display device Add or remove serial and parallel devices Set the video display features While the ThinkPad logo is being displayed, wait for a beep before pressing F1 to enter the BIOS Utility. The main screen displays as shown: Note: If the Setup password is set, you need to enter the Setup password to gain access to the BIOS Utility.

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There are six main menu items: Basic System Settings Startup Configuration Onboard Devices Configuration System Security Power Management Load Setup Default Settings

Navigating the BIOS Utility
Keep in mind the following when using the BIOS Utility: From the main menu screen, press the up or down arrow keys to move from one menu item to another; then press Enter to enter the selected menu. Parameters displayed in low brightness (grayed out) are not user-configurable. The computer detects and sets the values for these parameters. Press the up or down arrow keys to move from one parameter to another. Press the left or right arrow keys to change parameter settings. You have to change some settings when you add a component to the computer. Most of the parameters are self-explanatory. To exit a main menu item, press Esc. When you press Esc to exit the BIOS Utility from the main menu screen, the following prompt appears:

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Select YesYes to save the changes you made to the configuration values or NoNo to abandon the changes and retain the current values.

Power Management Features
Two power management modes are available in the computer system to reduce power consumption and to prolong battery life.

Screen Blanking Mode
When in screen blanking mode, the following occurs: The LCD backlight turns off. Events that cause the computer to enter standby mode: Screen blanking requested by the Fn key (Fn+F3).

Standby Mode
When in standby mode, the following occurs: The LCD backlight turns off. The hard disk motor stops. CPU stops the clock. Events that cause the computer to enter standby mode: Note: The standby mode indicator turns on when the system is in standby mode. Standby requested by the Fn key (Fn+F4). The LCD is closed (if the "Will not Enter Standby Even if the Lid is Closed" parameter in the Power Management menu of the BIOS Utility is set to "Enabled"). The system (keyboard, mouse, hard disk drive, parallel connector, or diskette drive, etc.) is idle for a certain period of time. The battery power is critically-low. The "Sleep upon Battery-low" in the Power Management menu of the BIOS Utility is set to "Enabled". Sleep Manager is not installed and the hibernation file is not present or invalid. Note: Before entering standby mode, if "Battery-low Warning Beep" in the Power Management menu of the BIOS Utility is set to "Enabled", four short beeps will be issued every minute for three minutes. If a powered AC Adapter is not attached, then the beeps will be continuously issued every minute until the system shuts down. Events that cause the computer to exit standby mode: The LCD is opened (if the system entered standby mode from closing the lid).

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A serial or PCMCIA device signals the modem ring indicator (RI). Any key or pointing device operation. Note: If the computer enters standby mode and the computer is using a communication or I/O PC Card, the PC Card and application program remain active.

Hibernation Mode
When in hibernation mode, the following occurs: The system status, RAM, VRAM, and setup data are stored on the hard disk. The system is powered off. Events that cause the computer to enter hibernation mode: Function combination key (Fn+F12) is pressed. The battery power is at a critically-low level. Note: Before entering standby mode, if "Battery-low Warning Beep" in the Power Management menu of the BIOS Utility is set to "Enabled", four short beeps will be issued every minute for three minutes. The system (keyboard, mouse, hard disk drive, parallel connector, or diskette drive, etc.) is idle for a certain period of time. Note: The computer cannot enter hibernation mode when the computer is using a communication or I/O PC Card. Events that cause the computer to exit hibernation mode: The power-on switch is operated. When power is turned on, the hibernation history in the boot record on the hard disk is recognized and the system status is restored from the hard disk to resume operation.

Symptom-to-FRU Index
The Symptom-to-FRU Index lists the symptoms and errors and the possible causes. The most likely cause is listed first. Note: Perform the FRU replacement or actions in the sequence shown in the FRU/Action columns. If 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 be used to help you decide which FRUs should be available when servicing a computer. Numeric error codes show the errors detected in POST or system operation (runtime). In the following error codes, X can be any number.

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If no codes are available, use narrative symptoms. If the symptom, is not listed, go to "Undetermined Problems" on page 42. Note: For any IBM device not supported by the diagnostic codes in this ThinkPad computer, see the manual for that device.

Numeric Error Codes and Messages
Error Code POST 010 Memory Error at MMMM: SSSS: OOOOh (R:xxxxh, W:xxxxh) Diskette Drive Controller Error Go to "Memory Check" on page 26. DIMM Planar board Message FRU/Action in Sequence

040

Go to "Diskette Drive Check" on page 29. Ensure the diskette drive configuration setting in BIOS Utility is correct. Diskette drive cable Diskette drive Planar board

047

Diskette Drive(s) Disabled

Ensure the diskette drive is not set to "Disabled" in the "System Security" menu of the BIOS Utility. Diskette drive cable Diskette drive

050

IDE Drive 0 Error

Ensure the hard disk drive is set to "Auto" in the "Basic System Settings" menu of the BIOS Utility. Hard disk connection board Hard disk drive Planar board

054

IDE Drive(s) Disabled

Ensure the hard disk drive is not set to "None" in the "Basic System Settings" menu of the BIOS Utility. Hard disk drive cable Hard disk drive

34

ThinkPad i Series 1400

Error Code 056

Message IDE Drive 0 Auto Detection Failed

FRU/Action in Sequence Ensure the hard disk drive is set to "Auto" in the "Basic System Settings" menu of the BIOS Utility. Hard disk connection board Hard disk drive Planar board

070

Real Time Clock Error

Reset time in the "Basic System Settings" menu of the BIOS Utility. Backup battery (RTC battery) Planar board

071

CMOS Battery Bad

Enter BIOS Utility and execute "Load Setup Default Settings". Backup battery (RTC battery) Planar board

072

CMOS Checksum Error

Enter BIOS Utility and execute "Load Setup Default Settings"; then reboot the system. Backup battery (RTC battery) Planar board

006

Equipment Configuration Error

Ensure the equipment (diskette drive, hard disk drive, keyboard, external mouse, etc.) is connected properly and is correctly set in the BIOS Utility. Hard disk connection board Hard disk drive Planar board

System Operation (Runtime) 103 Press to turn off NMI or other key to reboot Enter BIOS Utility and execute "Load Setup Default Settings"; then reboot the system. Remove the nonfactory-installed adapter card and reboot the system.

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