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IBM Mobile Systems

ThinkPad 310, 310D, 310E, 310ED Hardware Maintenance Manual

February 1998

S05L-1935-00

IBM Mobile Systems

ThinkPad 310, 310D, 310E, 310ED Hardware Maintenance Manual

February 1998

S05L-1935-00

IBM

Note

Before using this information and the product it supports, be sure to read the general information under “Notices” at the back of this manual.

First Edition (February 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 WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of 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 and/or changes in the product(s) and/or the program(s) described in this publication at any time.

This publication was developed for products and services offered in the United States of America. IBM may not offer the products, services, or features discussed in this document in other countries, and the information is subject to change without notice. Consult your local IBM representative for information on the products, services, and features available in your area.

Requests for technical information about IBM products should be made to your IBM reseller or IBM marketing representative.

Note to U.S. 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.

ii IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

About This Manual

This manual contains service and reference information for IBM ThinkPad 310, 310D, 310E or 310ED (2600) 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 mobile product, be sure to review the safety information under “Safety Notices (Multi-lingual Translations)” on page ix and “Safety Information” on page xvi.

iii

Related Publications

The following mobile product publications are available through IBM or your IBM Authorized Dealer.

Publication Part, Form Number

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 (Model 340, 355, 360, 370, 700, 701, 720, 750, 755)

Mobile Systems HMM Volume 3: ThinkPad Computers (Model 365, 380, 385, 560, 760, SelectaDock

Mobile Systems HMM Volume 4: ThinkPad Computers (Model 365, 380, 385, 560, 760, 765, 770, SelectaDock

30H2356, S82G-1501-01

30H2357, S82G-1502-03

84H8099, S82G-1503-05

05L1271, S05L-1270-01

Related Diskettes

The following diskettes are available through IBM or your IBM Authorized Dealer.

Diskette Part, Form Number

ThinkPad 310 Diagnostics Diskette

ThinkPad 310 Maintenance Diskette

05L1936, S05L-1936

05L1770, S05L-1770

iv IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Contents

Introduction . . . . . . . . . . . . . . . . . . . vii

How to Use Error Messages .......... viii

How to Read POST Error Messages ...... viii

Safety Notices (Multi-lingual Translations) ..... ix

Safety Information . . . . . . . . . . . . . . . . xvi

General Safety . . . . . . . . . . . . . . . . xvi

Electrical Safety . . . . . . . . . . . . . . . xvii

Safety Inspection Guide ........... xviii

Handling Electrostatic Discharge-Sensitive Devices xx

Grounding Requirements . . . . . . . . . . . . xx

Laser Compliance Statement ........... xxi

ThinkPad 310, 310D, 310E, 310ED (2600) .... 1

Read This First .................. 1

Note for Warranty: ................ 2

Checkout Guide . . . . . . . . . . . . . . . . . 3

BIOS Utility . . . . . . . . . . . . . . . . . . . . 11

Power Management Features ........... 12

Symptom-to-FRU Index . . . . . . . . . . . . . . 14

Related Service Procedures ............ 24

Utility Program Diskette .............. 29

Product Overview . . . . . . . . . . . . . . . . . 32

FRU Removals and Replacements ......... 33

Locations . . . . . . . . . . . . . . . . . . . . . 65

310 - System Unit Parts Listing .......... 70

310D - System Unit Parts Listing .......... 71

310/310D - System Unit FRU List ......... 72

310/310D LCD Unit Parts Listing .......... 75

310E System Unit Parts Listing .......... 77

310ED System Unit Parts Listing .......... 78

310E/310ED System Unit FRU List ........ 79

310E/310ED LCD Unit Parts Listing ........ 82

310E/310ED LCD Module FRU list ......... 83

310E (2600-Axx/Cxx/Exx/Fxx) System Unit Parts

Listing . . . . . . . . . . . . . . . . . . . . . 84

310ED (2600-Bxx/Dxx) System Unit Parts Listing . . 85 310E/310ED (2600-Axx/Bxx/Cxx/Dxx/Exx/Fxx) System

Unit FRU List .................. 86

310E/310ED LCD Unit Parts Listing ........ 89

310/310E/310D/310ED Miscellaneous and Other Parts 91

 Copyright IBM Corp. 1998 v

vi IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Introduction

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 514-938-3022 Toronto 905-316-4255 Vancouver 604-664-6464 Winnipeg 204-934-2735

FRU Replacement Strategy

Ensure that all diskette fixes are installed prior to replacing any FRUs. And, 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.

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.

The advanced diagnostic tests are intended to test IBM products. Non-IBM products or modified options can give false errors and invalid responses.

 Copyright IBM Corp. 1998

only

vii

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

┌────┬────┬────┬────┐

│ │ │ │ │ ┌────┬────┬────┬────┬────┬────┬────┬────┐ │ ð│ ð│ ð│ ð│ ð│ ð│ ð│ ð│ └────┴────┴────┴────┴────┴────┴────┴────┘

│ │ │ │ │ │ │ │

Reserved ││││││Size (SCSI)

└────┴────┘ │ │ Slot 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.

Device Code │ Logical Unit Number (SCSI)

viii IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

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.

Introduction ix

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.

x IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

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.

Introduction xi

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.

xii IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

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.

Introduction xiii

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.

xiv IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

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.

Introduction xv

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.

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.

Do not attempt to lift any

xvi IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

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

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.

exposed

Introduction

xvii

 Regularly inspect and maintain your electrical hand

tools for safe operational condition.

 Do not use worn or broken tools and testers. 

Never assume

from a circuit. First, 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

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.

that power has been disconnected

check

that it has been

with the power on

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

xviii IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

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.

Introduction

xix

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 battery-operated system. You can use coax or connector-outside shells on these systems.

– Use the round ground-prong of the AC plug on

AC-operated computers.

Grounding Requirements

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

xx IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

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

Introduction xxi

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.

xxii IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

ThinkPad 310, 310D, 310E, 310ED (2600)

Read This First

Before you go to the checkout guide, be sure to read this section.

Important Notes

 Only certified, trained personnel should

service the computer.

 Read FRU service procedures before replacing

any FRUs.

 Be extremely careful during write operations

such as copy, 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 can be written over.

 Replace FRUs only for the correct model.

When you replace the FRU, make sure 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, un-reproducible failure. Single failures

can occur from a variety of reasons 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 recurring problem exists. If this is suspected, clear the error log and run the test again. Do not replace any 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 false error codes being displayed.

How to Diagnose Multiple 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.

What to Do First: The servicer must include the

following in the parts exchange form or part return form that is attached to the returned FRU:

 Copyright IBM Corp. 1998

___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:

Important

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 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.)

2 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Important

If the following symptoms are present, they may indicate damage caused 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.

How to Disable the Power-On Password:

To clear a password from the system, first identify the password switch by referring to “Switch Locations” on page 68, then follow the steps below.

1. Power-off the computer.

2. Unplug the AC Adapter and remove the main battery.

3. Remove the keyboard and thermal plate. See “Keyboard” on page 41 and “Thermal Plate/CPU” on page 42.

4. Move the switch from Enable to Disable to bypass the password.

Note: There is one microswitch used to disable the password. After removing the thermal plate, locate SW2 (a 4-bit switch) near the lower-left corner of the CPU socket. The second bit switch (counting from the lowest side) is the password enable/disable switch. Turning the switch to the left is enable; to the right is disable.

5. Plug the AC Adapter, turn on the system, then press F2 while the ThinkPad logo is being displayed to enter the BIOS Utility.

Note: If your customer forgot the password, enter System Security and set Power On Password setting to [None] to clear password.

6. Save, then exit from the BIOS Utility.

7. Power off.

8. Unplug the power cable or battery.

9. Move the password switch from Disable to Enable. Note: To reinstall the password, the user must enter

a password in the BIOS Utility.

Checkout Guide

Use the following procedure as a guide for computer problems.

Note: 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.

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

ThinkPad 310, 310D, 310E, 310ED (2600)

2. Verify the symptoms by attempting to re-create 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) Go to

Power failure. (The power indicator does not go on or stay on.)

POST does not complete. No beeps, error codes, or messages are indicated.

POST detected an error and displayed numeric error code with error message.

Other symptoms (such as LCD display problems)

“Power System Checkout” on page 8.

“Symptom-to-FRU Index” on page 14 then see “No

Beep Symptoms” on page 18.

“Symptom-to-FRU Index” on page 14.

“Symptom-to-FRU Index” on page 14 then use the appropriate information on pages 18 to 23.

Memory Checkout

DIMMs are available for increasing memory capacity.

DIMM DIMM Total

16MB 0MB 16MB 0MB 16MB 16MB 16MB 16MB 32MB 32MB 0MB 32MB 0MB 32MB 32MB 32MB 8MB 40MB 8MB 32MB 40MB 32MB 16MB 48MB 16MB 32MB 48MB 32MB 32MB 64MB

Memory

Warning: This system will not work without DIMM memory

installed. Memory errors might stop system operation, show error

messages on the screen, or hang the system. 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.

4 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

2. Boot from the diagnostics diskette and start the PQA program (refer to “Running PQA Diagnostics Program” on page 25).

3. Select the Memory item to run the memory test.

If no error appears, install a new DIMM; if an error appears, replace the system board.

System Programs in Flash Memory: System

setup programs are stored in flash memory.

Flash Memory Update: A flash memory update is

required for the following conditions:

 New versions of system programs.  New features or options are added.

To update the flash memory, do the following:

1. Get the appropriate diskette containing the update.

2. Insert the System Program Service Diskette into drive A: and power-on the computer.

3. Select Update system programs from the menu.

System Board Checkout

The processing functions are performed by the system board. Processor problems can also be caused by the system board.

1. Boot from the diagnostics diskette and start the PQA program (please refer to “Running PQA Diagnostics Program” on page 25).

2. Run the System Board test to verify the symptom. This test verifies both the system board and the CPU.

If the tests detect a system board problem, replace the system board.

Note: Do not touch the keyboard or pointing device when the system board test is running. This may cause an unexpected error.

Keyboard and External Input Device Checkout

Note: If an external keyboard is attached, remove it if the

internal keyboard is 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 keyboard connection board on the system board.

If the tests do not detect a keyboard problem, run the Keyboard test by doing the following:

ThinkPad 310, 310D, 310E, 310ED (2600)

1. Boot from the diagnostics diskette and start the PQA program (please refer to “Running PQA Diagnostics Program” on page 25).

2. Go to the diagnostic menu screen; select Keyboard test and press F2 in the test items.

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+Enter to exit the test. If the tests detect a keyboard problem, do the following

one at a time to correct the problem. Do not replace a non-defective FRU.

 Ensure the keyboard switch is correctly set  Reseat the keyboard flexible cables  Replace the keyboard connection board  Replace the keyboard assembly  Replace the system board

The following external input devices are supported for this computer:

 Numeric keypad

 Mouse (PS/2 compatible)

 Keyboard If any of these devices do not work, reseat the cable

connector and repeat the failing operation. If the problem is not corrected, replace the device, and

then the system board.

Audio Board Checkout

1. Boot from the diagnostics diskette and start the PQA program (please refer to “Running PQA Diagnostics Program” on page 25).

2. Go to the diagnostic menu screen; select Audio and press F2 in the test items.

3. If the test detects a audio board problem, do the following actions one at a time to correct the problem. Do not replace a non-defective FRU.

 Audio board  System board

TrackPoint III Checkout

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 self-acting 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

6 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

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 PQA Diagnostics Program” on page 25).

2. Go to the diagnostic Manual Test menu.

3. Press F2 in the test items.

4. Press the left and right click buttons.

5. Use the pointing stick to move the cursor to the 4 corners.

If either the pointing stick or the click button does not work, perform the following actions, one at a time, to correct the problem. Do not replace a non-defective FRU.

 Reseat the keyboard flexible cables and the

TrackPoint flexible cable.

 Reseat the flexible cable connecting the TrackPoint

board via the system board.

 Replace the TrackPoint board (under the click

buttons).

 Replace the keyboard.  Replace the system board.

Diskette Drive Test

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.

Warning: 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 PQA Diagnostics Program” on page 25).

2. Go to the diagnostic Diskette Drive in the test items.

3. Press F2 in the test items.

4. Follow the instructions in the message window.

If an error occurs with the internal diskette drive, reseat the connector on the system board.

If the error still remains:

1. Reseat the diskette drive cable.

2. Replace the diskette drive cable.

ThinkPad 310, 310D, 310E, 310ED (2600)

3. Replace the diskette drive flexible cable.

4. Replace the system board.

If an error occurs when the external diskette drive is attached through the external diskette drive connector and there is no internal diskette drive, reseat the connector. If the error still remains, perform the following actions, one at a time.

1. Replace the external FDD cable.

2. Replace the diskette drive.

3. Replace the system board.

CD-ROM Drive Test

Do the following to isolate the problem to a controller, drive, or CD-ROM. Make sure that the CD-ROM does not have a 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 PQA Diagnostics Program” on page 25).

2. Go to the diagnostic CD-ROM in the test items.

3. Press F2 in the test items.

4. Follow the instructions in the message window.

If an error occurs, reseat the connector on the system board.

If the error still remains:

1. Reseat the CD-ROM cable.

2. Replace the CD-ROM drive.

3. Replace the system board.

Power System Checkout

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, see an appropriate power supply check listed below:

 Checking the AC Adapter  Checking Operational Charging  Checking the Battery Pack

8 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Checking the AC Adapter:

You are here because

the computer fails only when the AC Adapter is used. 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 Voltage (V dc)

1 19.0 to 20.5 2 Ground

 Replace the system board.  If the problem is still not corrected, go to

“Undetermined Problems” on page 23.

 If the voltage is not correct, go to the next step.

2. Unplug the AC Adapter cable from the AC power outlet and wait five minutes or longer to allow the 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.

ThinkPad 310, 310D, 310E, 310ED (2600) 9

Checking 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 status indicator does not turn on, remove the battery pack and allow 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: Do the following:

1. Power-off the computer.

2. Remove the battery pack and measure the voltage between battery terminals 1(+) and 6 (-). See the following figure:

Terminal Voltage (V dc) / Signal

1 0 to 13 2 ID 3 Thermal 4 Data 5 Reserved 6 Ground

Note: Signal lines, not used in these steps, are used for communication between the system and the battery.

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

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

Note: If the voltage of the battery pack is 0 V dc, it is not defective.

10 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

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 Windows 95based computer management utility similar in function to the BIOS Utility called the Notebook Manager.

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 power-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

Press F2 while the ThinkPad logo is being displayed to enter the BIOS Utility. The main screen displays.

Note: If the Setup password is set, you need to enter the Setup password to gain access to the BIOS Utility.

à ð

BIOS Utility

System Security

↑↓=Move highlight bar, Enter=Select, Esc=Exit

There are four main menu items:

 Basic System Settings

 System Security

 Power Management Settings  Load Setup Default Settings

ThinkPad 310, 310D, 310E, 310ED (2600)

Basic System Settings

Power Management Settings

Load Setup Default Settings

Navigating the BIOS Utility Screens

 From the main menu screen, press ↑ or ↓ to move

from one menu item to another and press Enter to select a menu.

 Parameters displayed in low brightness (grayed-out)

are not user-configurable. The computer detects and sets the values for these parameters.

 Press ↑ or ↓ to move from one parameter to another.

Press ← or → 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:

à ð

Do you want to save CMOS data?

[Yes] [No]

Select Yes to save the changes you made to the configuration values or No to abandon the changes and retain the current values.

Power Management Features

Two power management modes are provided by the computer to reduce power consumption and prolong battery power.

Standby Mode: When in standby mode, the

following occurs:

 The LCD backlight turns off.  The hard disk motor stops.

Events that cause the computer to enter standby mode:

 Standby requested by the Fn key. (Fn+F7)  The LCD is closed.  The specified time (standby timer in the BIOS Utility)

has elapsed from the last operation with the keyboard, mouse, hard disk drive, parallel connector, or diskette drive.

 The battery condition is low and hibernation is not

enabled (when Sleep Manager is not installed and the

12 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

hibernation file is not present or invalid). The battery power indicator blinks amber.

Events that cause the computer to exit standby mode:

 The LCD is opened.  The ring indicator (RI) is signaled by a serial or

PCMCIA device.

 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:

 Hibernation requested by the Fn key. (Fn+F8)  The specified time (hibernation timer in the BIOS

Utility) has elapsed from the last operation with the keyboard, mouse, hard disk drive, parallel connector, or diskette drive.

 A critical low battery condition occurs and hibernation

is enabled (when Sleep Manager is installed and the hibernation file is present and valid).

Note: The computer cannot enter hibernation mode when a communication or I/O PC Card is being used by the computer.

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 system status is restored from the hard disk to resume operation.

ThinkPad 310, 310D, 310E, 310ED (2600)

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 did not solve the problem, put the original part back in the computer. Do not replace a non- defective FRU.

This index can also be used to help you decide which FRUs to have 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. If no codes are available, use narrative symptoms. If the symptom is not listed, go to “Undetermined Problems” on page 23.

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

011 64KB System

015 Battery is

020 Keyboard

Message FRU/Action in Sequence

at MMMM: SSSS: OOOOh (R:xxxxh, W:xxxxh)

Management Memory Bad

Critical Low

Interface Error

Note: The message only appears for a few seconds.

1. Go to “Memory Checkout” on page 4.

2. DIMM

3. System board

1. Enter BIOS Utility to execute Load Setup Default Setting, then reboot system.

2. DIMM

3. System board

1. Go to “Checking the Battery Pack” on page 10.

2. Battery

3. Battery connector board

4. Charger board

5. System board

1. Go to “Keyboard and External Input Device Checkout” on page 5.

2. Ensure that the keyboard switch is correctly set.

3. Reseat the keyboard flexible cables.

4. Replace the keyboard connection board.

5. Replace the keyboard assembly.

6. Replace the system board.

14 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Error Code

021 Keyboard

022 Keyboard

030 Pointing

031 Pointing

040 Diskette Drive

045 CPU Clock

Message FRU/Action in Sequence

Error or Keyboard Not Connected

Note: The message only appears for a few seconds.

Locked Note: The

message only appears for a few seconds.

Device Error Note: The

message only appears for a few seconds.

Device Interface Error

Note: The message only appears for a few seconds.

Controller Error

Mismatch

1. Go to “Keyboard and External Input Device Checkout” on page 5.

2. Ensure that the keyboard switch is correctly set.

3. Reseat the keyboard flexible cables.

4. Replace the keyboard connection board.

5. Replace the keyboard assembly.

6. Replace the system board.

1. Go to “Keyboard and External Input Device Checkout” on page 5.

2. Check the external keyboard lock at the rear, if the keyboard has security feature.

1. Go to “Keyboard and External Input Device Checkout” on page 5.

2. Ensure that the keyboard switch is correctly set.

3. Reseat the keyboard flexible cables.

4. Replace the keyboard connection board.

5. Replace the keyboard assembly.

6. Replace the system board.

1. Go to “Keyboard and External Input Device Checkout” on page 5.

2. Ensure that the keyboard switch is correctly set.

3. Reseat the keyboard flexible cables.

4. Replace the keyboard connection board.

5. Replace the keyboard assembly.

6. Replace the system board.

1. Go to “Diskette Drive Test” on page 7.

2. Ensure the diskette drive configuration setting in BIOS Utility is correct.

3. Diskette drive cable

4. Diskette drive

5. System board

1. Enter BIOS Utility to execute Load Setup Default Setting, then reboot system.

2. Ensure the CPU frequency switches are set correctly.

ThinkPad 310, 310D, 310E, 310ED (2600) 15

Error Code

047 Diskette

048 Diskette Write

050 IDE Drive 0

054 IDE Drive(s)

055 Hard disk

056 IDE Drive 0

070 Real Time

071 CMOS

Message FRU/Action in Sequence

Drive(s) Disabled

Protected

Error

Disabled

drive(s) Write Protected

Auto Detection Failed

Clock Error

Battery Bad

1. Ensure the diskette drive is not set to [Disabled] in the “System Security” of BIOS Utility.

2. Diskette drive cable

3. Diskette drive

1. Ensure the diskette drive is not set to [Write Protect All Sectors] in the “System Security” of BIOS Utility.

2. Diskette drive cable

3. Diskette drive

1. Ensure the hard disk 0 is set to [Auto] in the Basic System Settings of BIOS Utility.

2. Hard disk connector board

3. Hard disk drive

4. System board

1. Ensure the hard disk drive is not set to [Disabled] in the System Security of BIOS Utility.

2. Diskette drive cable

3. Diskette drive

1. Ensure the hard disk drive is not set to [Write protect Boot Sector] in the System Security of BIOS Utility.

2. Hard disk connector board.

3. Hard disk drive

4. System board

1. Ensure the hard disk 0 is set to [Auto] in the Basic System Settings of BIOS Utility.

2. Hard disk connector board

3. Hard disk drive

4. System board

1. Reset Time in the Basic System Settings of BIOS Utility.

2. Backup battery (RTC battery)

3. System board

1. Enter BIOS Utility to execute Load Setup Default Settings.

2. Backup battery (RTC battery)

3. System board

16 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Error Code

072 CMOS

081 System

082 IRQ Setting

246 Equipment

System Operation (Runtime)

103 Press <Esc>

Message FRU/Action in Sequence

Checksum Error

Resource Conflict

Error

Configuration Error

to turn off NMI or other key to reboot

1. Enter BIOS Utility to execute Load Setup Default Settings, then reboot system.

2. Backup battery (RTC battery)

3. System board

1. Enter BIOS Utility to execute Load Setup Default Settings, then reboot system.

2. Remove the non-factory-installed adapter card and reboot system.

1. Enter BIOS Utility to execute Load Setup Default Settings, then reboot system.

2. Remove the non-factory-installed adapter card and reboot system.

1. Ensure the equipment (diskette drive, hard disk drive, keyboard, external mouse, etc.) are connected properly and are set correctly in BIOS Utility.

2. Hard disk connector board

3. Hard disk drive

4. System board

1. Enter BIOS Utility to execute Load Setup Default Settings, then reboot system.

2. Remove the non-factory-installed adapter card and reboot system.

Beep Symptoms

Symptom/Error FRU/Action in Sequence

Insert system diskette and press <Enter> key to reboot

ThinkPad 310, 310D, 310E, 310ED (2600) 17

1. Ensure the “System boot drive” in the System Security of BIOS Utility is not set to [Drive A].

2. Ensure the diskette drive configuration setting in BIOS Utility is correct.

3. Diskette drive

4. Hard disk connector board

5. Hard disk drive

6. System board

No Beep Symptoms

Symptom/Error FRU/Action in Sequence

No beep, poweron indicator on, and a blank LCD during POST

No beep, poweron indicator not on, and a blank LCD during POST

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

No beep, poweron indicator on, and a blinking cursor only during POST.

No beep during POST but system runs correctly.

1. Ensure all connectors are securely seated.

2. Reseat the CPU

3. CPU

4. System board

1. Reseat the LCD Connectors

2. Power source (battery & adapter). See “Power System Checkout” on page 8.

3. Audio connector board

4. Charger board

5. Hard disk drive

6. LCD inverter ID

7. LCD FPC Cable

8. LCD inverter

9. LCD

10. System board

1. Reseat the DIMM.

2. Reseat the LCD Connectors.

3. Hard disk/CD-ROM/diskette drive connectors

4. Hard disk drive

5. Keyboard

6. LCD inverter ID

7. LCD FPC Cable

8. LCD inverter

9. LCD

10. System board

1. Reseat the LCD Connectors

2. Reseat Hard disk/CD-ROM/ diskette drive connectors

3. Hard disk drive

4. LCD inverter ID

5. LCD FPC Cable

6. LCD inverter

7. LCD

8. System board System board

Note: The buzzer is on the system board.

LCD-Related Symptoms

Important: The notebook computer LCD contains over

921,000 thin-film transistors (TFTs). A small number of missing, discolored, or lighted dots (on all the time) 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 21 or more.

18 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Symptom/Error FRU/Action in Sequence

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

 LCD

backlight not working

 LCD too

dark

 LCD

brightness cannot be adjusted

 LCD

contrast cannot be adjusted

 LCD screen

unreadable

 Characters

missing pels

 Screen

abnormal

 Wrong color

displayed

LCD has extra horizontal or vertical lines displayed.

1. Reseat the LCD Connectors.

2. Hard disk connector board.

3. Hard disk

4. Keyboard

5. LCD inverter ID

6. LCD FPC Cable

7. LCD inverter

8. LCD

9. System board

1. Enter BIOS Utility to execute Load Setup Default Settings, then reboot system.

2. Reseat the LCD Connectors.

3. Keyboard (if control is from the keyboard).

4. LCD inverter ID

5. LCD FPC Cable

6. LCD inverter

7. LCD

8. System board

1. Reseat all LCD Connectors.

2. LCD inverter ID

3. LCD FPC Cable

4. LCD inverter

5. LCD

6. System board

1. LCD

2. LCD inverter ID

3. LCD inverter

4. System board

Keyboard/TrackPoint-Related Symptoms

Symptom/Error FRU/Action in Sequence

Keyboard (one or more keys) does not work.

TrackPoint does not work.

ThinkPad 310, 310D, 310E, 310ED (2600) 19

1. Go to “Keyboard and External Input Device Checkout” on page 5.

2. Reseat the three keyboard cables.

3. Keyboard

4. System board

1. Go to “TrackPoint III Checkout” on page 6.

2. Reseat TrackPoint cables.

3. Reseat the three keyboard cables.

4. TrackPoint board

5. Keyboard

6. System board

Indicator-Related Symptoms

Symptom/Error FRU/Action in Sequence

Indicator incorrectly remains off or on, but system runs correctly

1. Reseat the Audio connector board.

2. Audio connector board

3. System board

Power-Related Symptoms

Symptom/Error FRU/Action in Sequence

Power shuts down during operation.

The system will not power-on.

The system will not power-off.

Battery cannot be charged.

1. Go to “Power System Checkout” on page 8.

2. AC Adapter

3. Battery Pack

4. Battery connector board

5. Charger board

6. System board

1. Go to “Power System Checkout” on page 8.

2. AC Adapter

3. Charger board

4. System board

1. Go to “Power System Checkout” on page 8.

2. Press the power shutdown switch for more than 3 seconds.

3. Charger board

4. System board

1. Go to “Power System Checkout” on page 8.

2. Battery

3. Charger board

4. System board

PC Card (PCMCIA)-Related Symptoms

Symptom/Error FRU/Action in Sequence

System cannot detect the PC Card (PCMCIA)

PCMCIA slot pin is damaged.

1. PC Card (PCMCIA) slots assembly

2. System board PC Card (PCMCIA) slots assembly

Memory-Related Symptoms

Symptom/Error FRU/Action in Sequence

Memory count (size) appears different from actual size.

20 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

1. Go to “Memory Checkout” on page 4.

2. Enter BIOS Utility to execute Load Setup Default Settings, then reboot system.

3. DIMM

4. System board

Speaker-Related Symptoms

Symptom/Error FRU/Action in Sequence

Speakers have noise or no sound comes from system

1. Chassis (speaker on chassis)

2. Audio connector board

3. System board

Power Management-Related Symptoms

Symptom/Error FRU/Action in Sequence

The system will not enter hibernation.

The system will not wake up from hibernation.

The system will not enter standby after closing the LCD.

The system will not resume after opening the LCD.

Battery fuel gauge does not go higher than 90%.

System configuration does not match the installed devices.

1. Go to “Hibernation Mode” on page 13 and see the note.

2. Ensure the “System Hibernation Timer” in the Power Management Settings of BIOS Utility is not set to [OFF].

3. Boot an operating system and press Fn+F8 and see if the computer enters hibernation mode.

4. Keyboard connector board

5. Keyboard

6. Hard disk connector board

7. Hard disk drive

8. System board

1. Keyboard connector board

2. Keyboard

3. Hard disk connector board

4. Hard disk drive

5. System board

1. Ensure the “System Standby Timer” in the Power Management Settings of BIOS Utility is not set to [OFF].

2. Chassis (LCD cover switch on chassis)

3. System board

1. Chassis (LCD cover switch on chassis)

2. System board

1. 1. Remove battery pack and let it cool for 2 hours.

2. Refresh battery (continue to use battery until power off, then charge battery).

3. Battery

4. Charger board

5. System board

1. Enter BIOS Utility to execute Load Setup Default Settings, then reboot system.

2. Reseat Hard disk/diskette/CD-ROM drive connector.

ThinkPad 310, 310D, 310E, 310ED (2600) 21

Symptom/Error FRU/Action in Sequence

System hangs intermittently.

In DOS or Windows, multimedia programs, no sound comes from the computer. (Only system beeps are heard at power-on)

1. Hard disk/diskette/CD-ROM drive connector

2. Fan (go to “Running Fan Diagnostics Program” on page 29).

3. System board

1. Go to “Audio Board Checkout” on page 6.

2. Audio connector board

3. Chassis (speaker on chassis)

4. System board

Peripheral-Device-Related Symptoms

Symptom/Error FRU/Action in Sequence

External display does not work correctly.

Printer problems. 1. Run printer self-test.

Serial or parallel port device problems.

1. Use BOTH display mode, press Fn+F3.

2. System board

2. Printer driver

3. Printer cable

4. Ensure the “On Board Communication Ports” in the System Security of BIOS Utility is correct.

5. System Board

1. Device driver

2. Device cable

3. Device

4. Ensure the “On Board Communication Ports” in the System Security of BIOS Utility is correct.

5. System board

Intermittent Problems

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

When analyzing the intermittent problem, do the following:

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

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

3. If any error is detected, replace the FRU. Rerun the test to verify that there are no more errors.

22 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Undetermined Problems

You are here because the diagnostic tests did not identify which adapter or device failed, installed devices are incorrect, a short circuit is suspected, or the system is inoperative. Follow the procedures below to isolate the failing FRU.

Verify that the power supply being used at the time of the failure is operating correctly.

1. Power-off the computer.

2. Check the cables, wires, and connectors for short circuits and open circuits. Visually check them for damage. If any problems are found, replace the FRU.

3. Remove or disconnect all of the following devices:  Non-IBM devices

 Printer, external mouse, keyboard, and other

external devices

 Battery pack

 Hard disk drive  Diskette drive/CD-ROM drive

 DIMM  PC Card(PCMCIA)

4. Power-on the computer.

5. Determine if the problem has changed.

6. If the problem does not occur again, 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 non-defective FRU.

 Keyboard Connector Board

 Charger Board

 Audio Connector Board  LCD Assembly  System Board

ThinkPad 310, 310D, 310E, 310ED (2600)

Related Service Procedures

This section provides information about the following:  “Status Indicators.”

 “Power Switch” on page 25.  “Running PQA Diagnostics Program” on page 25.  “Fn Key Combinations” on page 30.

Status Indicators

The system status LED indicators show the current computer status in green and amber using symbols. The following shows the location of each symbol and the meaning of each indicator.

Symbol Color Meaning

.1/ Battery Green Enough battery power

Orange The battery pack is being

Blinking orange

.2/ Hard disk or CD-ROM in use

.3/ Numeric lock Green Indicates that the numeric

Orange Appears when data is read

remains for operation.

charged. The battery pack needs

charging. When the lamp starts blinking orange, the computer beeps three times.

from or written to the hard disk or read from the CD-ROM. Do not enter hibernation mode or turn off the computer when this indicator is on.

keypad on the keyboard is enabled. The keypad is enabled and disabled by pressing and holding the

Shift key, and pressing the NumLk key.

24 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Symbol Color Meaning

.4/ Caps lock Green Indicates that the Caps

.5/ Scroll lock Green Alternately turns on and off

.6/ Power on Green Indicates that the computer

Lock mode is enabled. All alphabetic characters (A- Z) are entered in capital letters without using the Shift key. The Caps Lock mode is enabled and disabled by pressing the Caps Lock key.

each time the ScrLk key is pressed. While this indicator is on, the Arrow keys are used as screen-scroll function keys. In this state, the cursor cannot be moved with the Arrow keys. Not all application programs support this function.

is operational. This indicator is on when the computer is on.

Power Switch

The system has no Power Shutdown Switch. If the computer cannot be turned off by pressing the power switch, try holding it for more then 3 seconds to force system shutdown.

Diagnostic Program Diskette

Diagnostic Program Diskette contains the following two programs:

 PQA Diagnostic Program  Fan Diagnostic Program

Running PQA Diagnostics Program

Important: Before running PQA Diagnostic Program, make

sure that the write enable tab of the Diagnostic Program Diskette is set to enable.

Important: Before using PCMCIA Diagnostic in PQA Diagnostic Program, press F2 while the ThinkPad logo is being displayed after power-on to enter the BIOS Utility. Select “System Security” and set enabled for “CardBus Support” by pressing the → key.

Note: Some test items require the tools below:

 FDD Erasable 2HD diskette  Parallel Wrap plug (P/N: 72X8546)  Serial Wrap plug (P/N: 72X8546)  PCMCIA PC test card (P/N 35G4703)  CD-ROM, Any data and audio CDs

ThinkPad 310, 310D, 310E, 310ED (2600)

 ThinkPad 310 Diagnostics Diskette (P/N 05L1936)  ThinkPad 310 Maintenance Utility Diskette (P/N

05L1770)

Boot from the Diagnostic Program Diskette and select PQA System Diagnostics Program from PC DOS 7.0 Startup Menu, the PQA main menu appears on screen.

Press → or ← to move around the main menu. Press Enter to enable the selected option. The main options are Diag, Result, SysInfo, Option and Exit.

The Diag option lets you select testing items and times. The following screen appears when you select Diag from

the main menu.

This screen allows you to specify the number of tests to perform. The options are as follows:

 Manual Test Performs a single test and checks the

selected test items in sequence.

26 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

 Auto Test Performs multiple tests of the selected

items and checks the selected test items in sequence.

Note: PCMCIA Diagnostic supports manual test only. Do not select PCMCIA Diagnostic in Auto Test.

The screen below appears if you select AUTO Test.

Specify the desired number of tests and press Enter. After you specify the number of tests to perform, the

screen shows a list of test items (see below).

Press ↑or ↓ to move the highlight bar from one item to another. Press Space to enable or disable the item. The > mark indicates that there are available suboptions. Press Enter to view the available suboptions of each selected item. Press Esc to close the submenu.

The right corner screen information gives you the available function keys and the specified test number.

ThinkPad 310, 310D, 310E, 310ED (2600)

Space Enables/disables the item Esc Exits the program F1 Help F2 Tests the selected item(s) Enter Opens the available suboptions Test Times

Indicates the number of tests to perform.

Note: The F1 and F2 keys function only after you finish configuring the Test option.

PC Test Card LED

The green LED on the PC test card turns on when the PCMCIA test is running. If the LED does not turn on, check that the card is installed correctly by reseating the card. If it still does not turn on after it is reseated, try using another slot for the test. If the LED still does not turn on and the test fails, replace the FRU shown by the diagnostic error code.

PQA Diagnostic Program Error Codes and Messages

Error Code

System

16XX RTC(Backup

1XXX CPU or System

2XXX Memory error 1. Reseat CPU

3XXX Keyboard error 1. Reseat Keyboard

4XXX Video error System board 5XXX Parallel Port

6XXX Serial port or

7XXX Diskette drive

8XXX Hard disk error 1. Load BIOS Default

9XXX CD-ROM error 1. Reseat CD-ROM cable

Message FRU/Action in Sequence

battery error

board error

error

system board error

error

Backup battery

1. Reload BIOS default setting.

2. CPU

3. System board

2. DIMM

3. System board

2. Keyboard

3. System board

System board

1. Diskette drive

2. System board

Setting

2. Hard disk connector board

3. Hard disk

2. CD-ROM drive

3. System board

28 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Error Code

10XXX CPU or System

11XXX Pointing device

PCMCIA X XXXX

Message FRU/Action in Sequence

board error

error

PCMCIA error 1. Replace PC Card

1. CPU

2. System board

1. TrackPoint board FPC cable

2. TrackPoint board

3. Keyboard

4. System board

2. PCMCIA slots assembly

3. System board

Running Fan Diagnostics Program

The system is equipped with sensors to protect against system overheating. By setting video controller and processor thermal thresholds, the system can turn on the cooling fan or shut down automatically when temperatures reach the defined threshold parameters.

Systems experiencing frequent auto sensor shutdown may need to reset the thermal sensor threshold (refer to “Setting Thermal Sensor Threshold”) and execute the fan test to ensure the cooling fan is operating normally.

Follow the steps below to use Fan Diagnostics Program:

1. Boot from the Diagnostic Program Diskette.

2. Select Fan Diagnostics from PC DOS 7.0 Startup Menu.

3. Follow the instruction on screen to execute fan diagnostics.

Note: If test failed, try reseating the fan connector or replacing the fan.

Utility Program Diskette

The Utility Program Diskette contains a variety of programs as further explained in this section.

Setting Thermal Sensor Threshold

Systems experiencing frequent auto sensor shutdown may need to reset the thermal sensor threshold and execute the fan test to ensure the normal operation of the cooling fan (refer to “Running Fan Diagnostics Program”).

Follow the steps below to set thermal threshold:

ThinkPad 310, 310D, 310E, 310ED (2600)

1. Boot from the Utility Program Diskette.

2. Select Thermal Sensor Utility from PC DOS 7.0 Startup Menu, then the system thermal is executed.

Setting Inverter ID

There is an EEROM in the inverter which stores its supported LCD type ID code. If you replace the LCD with a different brand, the ID information in the inverter EEROM should be updated.

Follow the steps below to set the LCD Inverter ID:

1. Boot from the Utility Program Diskette.

2. Select Inverter ID Utility from PC DOS 7.0 Startup Menu.

3. Follow the instructions on screen to read current or to set a new inverter ID code.

Note: When you set a new inverter ID and the new LCD is not yet enabled (to function), connect an external monitor to see the program execution process.

Important: Make sure the new ID code you choose corresponds with the LCD brand and type. If you write a wrong ID into the inverter, just reboot and re-execute the program and input the correct ID code.

4. Restart computer - the new LCD should work normally.

Note: If LCD does not display after changing the ID code, make sure you write the correct ID code, or try reseating the LCD FPC cable connectors.

Fn Key Combinations

The following table shows the Fn key and function key combinations and their corresponding functions.

The Fn key works independently from the operating system. The operating system obtains the status through the system management interface to control the system.

Fn + Description

F1 Hotkey help F2 Brightness/Contrast control F3 LCD/CRT/Both display switching F4 Fuel-Gauge display ON/OFF F5 Audio volume control

Ctrl+Alt+F6 on the external keyboard if one is attached.

Ctrl+Alt+F7 on the external keyboard if one is attached.

Ctrl+Alt+F8 on the external keyboard if one is attached.

30 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Fn + Description

Power Management Settings and System Information screens

F7 F8 Right

Standby invocation Hibernation invocation Scale increase (used with Fn+F2, Fn+F5)

arrow Left

Scale decrease (used with Fn+F2, Fn+F5)

arrow Esc Hotkey Icon Escape

ThinkPad 310, 310D, 310E, 310ED (2600) 31

Product Overview

The following is an overview of the system features.

Feature Description

Processor  310/310D (2600-1xx/2xx/3xx/7xx) Intel

Bus architecture

DIMM  16MB, or 32MB DIMM card, maximum

CMOS RAM

SVGA Video

Audio  Yamaha Sound Chip

Diskette drive

Hard disk drive

CD-ROM drive

PCMCIA Cards

Pentium Processor (133 MHz)

 310E/310ED

(2600-4xx/5xx/6xx/8xx/Exx) Intel Pentium Processor with MMX Technology (133/150 MHz)

 310E/310ED

(2600-Axx/Bxx/Cxx/Dxx/Fxx) Intel Pentium Processor with MMX Technology (166 MHz)

PCI 5V

64MB (144-pin EDO)

256KB

 11.3-inch, 65,536 colors, 800x600 pixel

TFT color LCD

 11.3-inch, 256 colors, 800x600 pixel

DSTN color LCD

 12.1-inch, 256 colors, 800x600 pixel

DSTN color LCD

 12.1-inch, 65,536 colors, 800x600 pixel

TFT color LCD

 Internal speakers

1.44MB (3-mode), 3.5-inch

 310/310D (2600-1xx/2xx/3xx/7xx)

1.0GB, 2.5-inch, IDE interface

 310E/310ED (2600-4xx/5xx/6xx/8xx)

1.62GB, 2.5-inch, IDE interface

 310E/310ED

(2600-Axx/Bxx/Cxx/Dxx/Exx/Fxx) 2.1GB,

2.5-inch, IDE interface

 310/310D, 310E/310ED 5.25-inch, X10

speed, IDE interface

 310E/310ED (2600-Bxx/Dxx) 5.25-inch,

X20 speed, IDE interface

 One Type III or two Type II  CardBus, ZV Port

32 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

FRU Removals and Replacements

This section contains information about removals and replacements.

 Do not damage any parts. Only certified and trained

personnel should service the computer.

 The arrows in this section show the direction of

movement to remove a FRU, or to turn a screw to release the FRU. The arrows are marked in numeric order, in square callouts, to show the correct sequence of removal.

 Any FRUs that must be removed in order to remove

the failing FRU are listed at the top of the page.

 To replace a FRU, reverse the removal procedure

and follow any notes that pertain to replacement. See “Locations” on page 65 for internal cable connections and arrangement information.

 When replacing a FRU, use the correct screw size, as

shown in the procedure.

CAUTION: 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.

CAUTION: The battery pack contains small amounts of nickel. Do not disassemble it, throw it into fire or water, or shortcircuit it. Dispose of the battery pack as required by local ordinances or regulations.

Warning: 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 short circuits.

Warning: The system board is sensitive to, and can be damaged by electronic discharge. Establish personal grounding by touching a ground point with one hand before touching these units. An electrostatic discharge (ESD) strap must be used to establish personal grounding.

ThinkPad 310, 310D, 310E, 310ED (2600)

Screw Type Example Explanation

Illustration Size Head and Color

M2 x 4L Flat head, black or

silver

M2 x 6L Pan head, black or

M3 x 6L Bind head, black or

silver

Note: Some screws have nylock paste (on the grooves) for better friction and increased stability.

Some screws have bracket supports.

FPC Cable Connector Type

Unplugging the Cable

To unplug the cable, first unlock the connector by pulling up the two clasps on both sides of the connector with a plastic tool. Then carefully pull out the cable from the connector.

Plugging the Cable

To plug the cable back, first make sure that the connector is unlocked, then plug the cable into the connector. With a plastic tool, press the two clasps on both sides of the connector to secure the cable in place.

34 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

I/O Door

Press the rear connector door latch to open the door. Remove the center latch; then remove the rear connector door by flexing it.

Battery Pack and Battery Pack Door

Reverse the steps above to install a battery pack.

ThinkPad 310, 310D, 310E, 310ED (2600)

Hard Disk Drive and Hard Disk Drive Door

Turn the computer upside down.

Step Size

(Quantity)

.1/ M2 x 6L (1) Flat head,

Head and Color

black

Memo

Note: Make sure you use the correct screw when

replacing.

Reverse the steps above to install a hard disk drive.

36 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Warning: Do not drop or apply any shock to the hard disk

drive. The hard disk drive is sensitive to physical shock. Incorrect handling can cause damage and permanent loss of data on the hard disk. Before removing the hard disk drive, have the user make a backup copy of all the information on the hard disk. Never remove the hard disk drive while the system is operating or is in hibernation mode.

ThinkPad 310, 310D, 310E, 310ED (2600)

DIMM and DIMM Door

Turn the computer upside down.

Step Size

(Quantity)

.1/ M2 x 5L (1) Bind head,

Head and Color

black

Memo

Note: The screw does not separate from the DIMM cover.

Note: When installing the DIMM, do the following:

1. Find the notch on the side of the DIMM.

2. With the notched end of the DIMM toward the right side of the socket, insert the DIMM, at an angle of approximately 20° , into the socket; then press it firmly.

3. Pivot the DIMM until it snaps into place.

38 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Side View

Hinge Cover

ThinkPad 310, 310D, 310E, 310ED (2600) 39

Step Size

(Quantity)

.1/ M2 x 4L (4) Flat head,

Head and Color

black

Memo

Note: Make sure you use the correct screw when

replacing.

40 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Keyboard

 Hinge Covers (5)

When replacing the keyboard unit, connect the keyboard connector as shown in the figure; then replace the keyboard. (The leftmost and rightmost connectors should be unlocked by lifting the clasps from under them. Unlock the center connector by pulling on the left and right of the clasp.)

Warning: Hold down the keyboard connection board when pulling out the cables, so as not to damage the cables.

Note: The orientation of the center lock connector is different (opposite) from the left and right lock connectors. Unlock this connector from the bottom, as shown in the figure.

ThinkPad 310, 310D, 310E, 310ED (2600)

Thermal Plate/CPU

 Hinge Covers (5)  Keyboard Unit (6)

Step Size

(Quantity)

.1/ M2.5 x 18L

(4)

Head and Color

Pan head, silver

Memo

Note: Make sure you use the correct screw when

replacing. Note: For 310E/ED, machine type

2600-Axx/Bxx/Cxx/Dxx/Exx/Fxx model, a pad is found between the thermal plate and the PC Card slots. When reinstalling the thermal plate, first place the pad on top of the PC Card slots before you procceed.

Installing CPU

1. Insert a flat-blade screwdriver into the opening at the left end of the socket and push towards the other end of the socket.

2. Pull out the CPU; then insert the replacement CPU. Ensure the CPU is properly aligned before pressing it into the socket.

3. Insert a flat-blade screwdriver into the opening at the right end of the socket and push towards the other end of the socket.

42 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Important:

A sponge pad is found underneath the CPU. When installing a replacement CPU, make sure the sponge pack is in place. If you need to replace the sponge pad, it is part of the mylar pack FRU.

ThinkPad 310, 310D, 310E, 310ED (2600)

Diskette Drive/CD-ROM Drive

 Hinge Covers (5)  Keyboard Unit (6)  Thermal plate / CPU (7)

Important: When removing the module locks, pull them up at an angle. They cannot be removed when pulled straight up.

Diskette Drive (Model Unique)

44 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

CD-ROM Drive (Model Unique) Warning: Do not open the CD-ROM; no user adjustments

or serviceable parts are inside. Use of controls, adjustments, or the performance of procedures other than those specified may result in hazardous radiation exposure.

Figure A

Figure B

ThinkPad 310, 310D, 310E, 310ED (2600)

CAUTION: Do not push on the top surface of the CD-ROM drive.

Note: For 310E/ED, machine type 2600-Bxx/Dxx model,

you need to perform an extra step as shown in the illustration above. This step removes the CD-ROM drive cable before you pull out the CD-ROM drive.

46 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

LCD Removal and Replacement

 Hinge Covers (5)

LCD Display Module

Step Size

(Quantity)

.1/ M2 x 5L (2) Pan head,

.2/ M2.5 x 8L (4) Pan head,

Head and Color

Yellow Zn

silver

Memo

w/ nylock paste

Note: Make sure you use the correct screw when replacing.

ThinkPad 310, 310D, 310E, 310ED (2600) 47

LCD Bezel:

Note: When removing the LCD, take note of the

following:

1. Be careful not to scratch the LCD cover when removing the screw covers.

2. The LCD cover has several latches. Release these latches; then remove the LCD cover. Be careful not to break the latches.

Step Size

(Quantity)

.2/ M2.5 x 6L (3) Pan head,

Head and Color

black

Memo

w/ nylock paste

Note: Make sure you use the correct screw when replacing.

48 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

LCD, LCD Cover, LCD FPC Cable, LCD Left Hinge, and Inverter: Important: After you

replace the LCD or inverter, follow the instructions in “Setting Inverter ID” on page 30.

Note: For DSTN LCDs, a tape is used to secure the LCD FPC cable after it is connected to the LCD. This tape is a special tape with safety characteristics, and is part of the Mylar FRU. Removing Procedures:

Remove LCD: .1/→.2/→.3/ Remove Inverter: .1/→.2/→.3/→.4/ →.5/

Remove Left Hinge: .6/→.7/ Remove LCD FPC cable: .1/→.2/→.3/→.4/

→.5/→.6/→.7/

Step Size

(Quantity)

.1/ M3 x 6L (4) Bind head,

.4/ M2 x 3L (2) Pan head,

.7/ M2.5 x 6L (2) Pan head,

Head and Color

silver

black

Memo

w/ nylock paste

Note: Make sure you use the correct screw when replacing.

ThinkPad 310, 310D, 310E, 310ED (2600) 49

LCD Right Hinge and LCD Diaper

Step Size

(Quantity)

.1/ M2.5 x 6L (2) Pan head,

Head and Color

black

Memo

w/ nylock paste

Note: Make sure you use the correct screw when replacing.

50 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Inside Assembly

 Hinge Covers (5)  Keyboard Unit (6)  LCD Unit (9)  Thermal plate and CPU (7)

Upper Base

Step Size

(Quantity)

.1/ M2.5 x 18L

(3)

.2/ M2.5 x 6L (4) Pan head,

.3/ M2 x 4L (1) Flat head,

Note: Make sure you use the correct screw when replacing.

Head and Color

Pan head, silver

black

Memo

w/ nylock paste

ThinkPad 310, 310D, 310E, 310ED (2600) 51

TrackPoint Board, TrackPoint Button and TrackPoint Board FPC Cable

Step Size

(Quantity)

.1/ M2 x 4L (2) Pan head,

Head and Color

silver

Memo

Note: Make sure you use the correct screw when

replacing.

52 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Fan

Note: The tape used to secure the fan is not ordinary

tape, but a special tape with safety characteristics. This tape is part of the Mylar FRU.

If you need to replace the fan, besides the new fan, you need to get from the Mylar FRU the following: the tape mentioned above, two sponge strips to stick on the sides of the fan, and a double-sided adhesive tape to attach on the underside of the fan. Refer to the old fan.

Warning: The fan cable should follow the path shown in the figure. If the fan cable gets pressed or weighed down and is damaged, the chassis might get short-circuited.

Warning: When removing the fan, do not tilt the fan too much to any one side. The post that steadies the fan is delicate and will break if too much pressure is exerted on it. Take care in removing the fan, it should be done as vertically as possible.

ThinkPad 310, 310D, 310E, 310ED (2600)

Audio Connector Board

Warning: Take care in removing the audio connection

board (see figure) to avoid damaging the LEDs.

54 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Battery Connector Board

Step Size

(Quantity)

.2/ M2.5 x 6L (2) Pan head,

Head and Color

black

Memo

w/ nylock paste

Note: Make sure you use the correct screw when replacing.

ThinkPad 310, 310D, 310E, 310ED (2600) 55

Speaker and Cover Switch Cables

56 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Lower Base

Important: To remove the chassis with the system board

out of the lower base, the PCMCIA slot buttons should be upright then pushed in (.1/→.2/) before you begin this removal procedure.

ThinkPad 310, 310D, 310E, 310ED (2600)

Step Size

(Quantity)

.3/ M2.5 x 6L (2) Pan head,

.4/ M2 x 4L (2) Pan head,

Head and Color

black

silver

Memo

w/ nylock paste

Note: Make sure you use the correct screw when replacing.

58 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

PCMCIA Door and PCMCIA Door Spring

ThinkPad 310, 310D, 310E, 310ED (2600) 59

Charger Board

Step Size

(Quantity)

.1/ M2 x 4L (2) Pan head,

Head and Color

silver

Memo

Note: Make sure you use the correct screw when

replacing.

60 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

System Board: Important: After replacing the

system board, follow the instructions in “Setting Thermal Sensor Threshold” on page 29.

Step Size

(Quantity)

.1/ M2 x 4L (2) Pan head,

.2/ M2 x 4L (2) Pan head,

.3/ M2 x 4L (2) Pan head,

.4/ M2 x 4L (1) Pan head,

Head and Color

silver

black

silver

Memo

w/ nylock paste

w/ brackets

Note: Make sure you use the correct screw when replacing.

ThinkPad 310, 310D, 310E, 310ED (2600) 61

Backup Battery:

The backup battery is a lithium battery and can cause a fire, explosion, or severe burns. Do not charge it, heat it higher than 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 of an incorrect battery can result in ignition or explosion of the battery. Replacement batteries can be ordered from IBM or IBM authorized dealers.

Warning:

62 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Keyboard Connector Board

ThinkPad 310, 310D, 310E, 310ED (2600) 63

PCMCIA Slot Assembly

Step Size

(Quantity)

.1/ M2 x 14L (2) Pan head,

Head and Color

silver

Memo

w/ brackets

Note: Make sure you use the correct screw when replacing.

64 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Locations Front View

.1/ LCD .2/ Indicator panel .3/ Speakers .4/ Power switch

.5/ CD-ROM eject button .6/ CD-ROM drive (310E/310ED) or

diskette drive (310/310E)

.7/ Battery cover release latch .8/ Battery bay .9/ Personalization nameplate

.1ð/ TrackPoint III

.11/ LCD release latch

.12/ Click buttons

.13/ Hard disk drive bay

.14/ Fn key

.15/ Function keys

.16/ PC Card eject buttons

.17/ PC Card slots

ThinkPad 310, 310D, 310E, 310ED (2600) 65

Bottom View

.1/ DIMM door

66 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

Rear View

.1/ I/O door

.2/ Power jack

.3/ Security keyhole

.4/ Microphone-in jack

.5/ Line-in jack

.6/ External diskette drive connector

.7/ Line-out/headphone jack

.8/ Serial connector

.9/ Parallel connector

.1ð/ External display connector

.11/ External input device connector

ThinkPad 310, 310D, 310E, 310ED (2600) 67

Switch Locations

There are two switches on the system board.  CPU speed

 Keyboard select, password enable/disable and BIOS

screen select and another switch on the DC-DC converter.

 CPU voltage Refer to the figure and tables below on how to set these

switches.

CPU Settings

CPU Type Voltage Speed

Intel P54CSLM-133 CPU 3.1V 133MHZ Intel P55C-133 CPU, MMX 2.45V 133MHZ Intel P55C-150 CPU, MMX 2.45V 150MHZ Intel P55C-166 CPU, MMX 2.45V 166MHZ

CPU Voltage (S1) Settings

CPU Voltage 2.35V 2.45V 2.9V 3.1V

Switch 1 Off Off Off Off Switch 2 Off On Off Off Switch 3 On Off Off Off Switch 4 Off Off Off On

68 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

CPU Speed (SW3) Settings

CPU Speed 133MHz 150MHz 166MHz

Switch 1 On Off On Switch 2 Off On Off Switch 3 Off On On Switch 4 On On On

Keyboard Language (SW2, Switch 1 and

2) Settings

Keyboard Language European U.S. Japanese

Switch 1 On Off Off Switch 2 Off Off On

Password (SW2, Switch 3) Settings

Password ON OFF

Switch 3 Bypass Check

Reserved switch (SW2, Switch 4)

Reserved ON OFF

Switch 4 -- --

ThinkPad 310, 310D, 310E, 310ED (2600) 69

310 - System Unit Parts Listing

70 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

310D - System Unit Parts Listing

ThinkPad 310, 310D, 310E, 310ED (2600) 71

310/310D - System Unit FRU List

No. Description FRU No. Q'ty

1 Hinge cover (L) 12J0533 1 2 TrackPoint rubber cap 84G6536 2 3 Hinge cover (R) 12J0534 1 4 Keyboard (Japan) (with

TrackPoint rubber cap) Keyboard (Germany) (with

TrackPoint rubber cap) Keyboard (Slovakia) (with

TrackPoint rubber cap) Keyboard (Portugal) (with

TrackPoint rubber cap) Keyboard (Netherlands) (with

TrackPoint rubber cap) Keyboard (Hungary) (with

TrackPoint rubber cap) Keyboard (France) (with

TrackPoint rubber cap) Keyboard (Italy) (with

TrackPoint rubber cap) Keyboard (Czech) (with

TrackPoint rubber cap) Keyboard (Russia) (with

TrackPoint rubber cap) Keyboard (Spain) (with

TrackPoint rubber cap) Keyboard (U.K.) (with

TrackPoint rubber cap) 5 Upper base 11J8565 1 6 Diskette drive FPC cable 12J0522 1

CD-ROM drive FPC cable 12J0521 1 7 Diskette drive bracket 12J0520 1

CD-ROM drive bracket 12J0519 1 8 Internal diskette drive module

(with bracket, bezel, FPC cable

and information label)

Internal CD-ROM drive module

(with bracket, bezel, FPC cable

and information label) 9 Diskette drive bezel 12J0524 1

CD-ROM drive bezel 12J0523 1 10 See Miscellaneous/ Mylar pack 11 Fan 11J8592 1 12 Audio connector board (with

Mylar)

11J8608 1

11J8609 1

12J0504 1

11J8622 1

11J8612 1

12J0506 1

11J8610 1

11J8611 1

12J0507 1

12J0503 1

11J8614 1

11J8607 1

11J8570 1

11J8569 1

11J8584 1

72 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

No. Description FRU No. Q'ty

13 Audio connector board FPC

cable

14 Chassis (with speaker, LCD

cover switch, PCMCIA door and Mylar)

15 Battery pack (NiMH) (with

information label) 16 Backup battery 11J8591 1 17 System board (without charger,

CPU, PCMCIA socket and

Mylar) 18 Charger board (with Mylar) 11J8582 1 19 Hard disk drive module

connector board 20 I/O door 12J0529 1 21 Lower base (with I/O door and

robber foot, without information

label, TrackPoint board and

TrackPoint buttons) 22 Battery pack door 12J0530 1 23 DIMM door (with screw) 12J0532 1 24 Hard disk drive door 12J0531 1 25 Hard disk drive module lower

cover plate 26 1.0GB hard disk drive module

(with upper and lower cover

plates, connector board, Mylar

and information label)

1.4GB hard disk drive module

(with upper and lower cover

plates, connector board, Mylar

and information label)

2.1GB hard disk drive module

(with upper and lower cover

plates, connector board, Mylar

and information label) 27 Hard disk drive module upper

cover plate (with information

label and inside Mylar) 28 DIMM 16 MB EDO 11J8602 1

DIMM 32 MB EDO 11J8603 1 29 Intel P54CSLM -133 CPU 11J8600 1 30 Keyboard connector board (with

Mylar) 31 PCMCIA slots assembly 11J8634 1 32 See Miscellaneous /

Miscellaneous pack 2

11J8585

11J8566 1

11J8604 1

11J8581 1

11J8583 1

11J8564 1

12J0512 1

11J8624 1

12J0496 1

11J8625 1

11J8568 1

11J8586 1

ThinkPad 310, 310D, 310E, 310ED (2600) 73

No. Description FRU No. Q'ty

33 See Miscellaneous /

Miscellaneous pack 2

34 Battery connector board (with

cable) 35 Thermal plate 11J8567 1 36 TrackPoint board (with Mylar) 11J8587 1 37 TrackPoint board FPC cable 12J0497 1 38 See Miscellaneous/

Miscellaneous pack 3

11J8588 1

74 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

310/310D LCD Unit Parts Listing

No. Description FRU No. Q'ty

1 11.3" DSTN/TFT LCD

bezel (with logo)

2 11.3" DSTN LCD 11J8593 1

11.3" TFT LCD 11J8594 1 3 LCD hinge (R) 11J8652 1 4 LCD inverter

(DSTN/TFT)

5 11.3" DSTN LCD FPC

cable (with LCD cable diaper)

11.3" TFT LCD FPC

cable (with LCD cable diaper)

6 See Miscellaneous/

Mylar pack

11J8576 1

11J8589 1

11J8577 1

11J8578 1

ThinkPad 310, 310D, 310E, 310ED (2600) 75

No. Description FRU No. Q'ty

7 11.3" DSTN LCD cover

(with logo and LCD diaper and left hinge)

11.3" TFT LCD cover (with logo and LCD diaper and left hinge)

8 See Miscellaneous/

Miscellaneous pack 2

9 LCD hinge (L) 12J0527 1

11J8573 1

11J8574 1

76 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM

IBM thinkpad 315 schematic

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

How to Use Error Messages

How to Read POST Error Messages

Safety Notices (Multi-lingual Translations)

Safety Information

General Safety

Electrical Safety

Safety Inspection Guide

Grounding Requirements

Laser Compliance Statement

Read This First

Note for Warranty:

How to Disable the Power-On Password:

Checkout Guide

Memory Checkout

System Board Checkout

Keyboard and External Input Device Checkout

Audio Board Checkout

TrackPoint III Checkout

Diskette Drive Test

CD-ROM Drive Test

Power System Checkout

Checking the AC Adapter:

Checking Operational Charging: To check

Checking the Battery Pack: Do the following:

BIOS Utility

Power Management Features

Symptom-to-FRU Index

Numeric Error Codes and Messages

Beep Symptoms

No Beep Symptoms

LCD-Related Symptoms

Keyboard/TrackPoint-Related Symptoms

Indicator-Related Symptoms

Power-Related Symptoms

PC Card (PCMCIA)-Related Symptoms

Memory-Related Symptoms

Speaker-Related Symptoms

Power Management-Related Symptoms

Peripheral-Device-Related Symptoms

Intermittent Problems

Undetermined Problems

Related Service Procedures

Status Indicators

Power Switch

Running PQA Diagnostics Program

PC Test Card LED

Running Fan Diagnostics Program

Utility Program Diskette

Setting Thermal Sensor Threshold

Setting Inverter ID

Fn Key Combinations

Product Overview

FRU Removals and Replacements

I/O Door

Battery Pack and Battery Pack Door

Hard Disk Drive and Hard Disk Drive Door

DIMM and DIMM Door

Hinge Cover

Keyboard

Thermal Plate/CPU

Diskette Drive/CD-ROM Drive

LCD Removal and Replacement

LCD Bezel:

LCD Right Hinge and LCD Diaper

Inside Assembly

Upper Base

Audio Connector Board

Battery Connector Board

Speaker and Cover Switch Cables

Lower Base

PCMCIA Door and PCMCIA Door Spring

Charger Board

System Board: Important: After replacing the

Backup Battery:

Keyboard Connector Board