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IBM Mobile Systems

Hardware Maintenance Manual Volume 2: ThinkPad Computers

April 1995

We Want Your Comments! (Please see page 491)

S82G-1502-03

This Manual Supports:

ThinkPad 340x (2610) ThinkPad 355x (2619) ThinkPad 360x (2620) ThinkPad 370x (9545) ThinkPad 700x (9552) ThinkPad 701x (2630) ThinkPad 720x (9552) ThinkPad 750x (9545) ThinkPad 755x (9545)

IBM Mobile Systems

Hardware Maintenance Manual Volume 2: ThinkPad Computers

April 1995

We Want Your Comments! (Please see page 491)

S82G-1502-03

IBM

Note

Before using this information and the product it supports, be sure to read the general information under “Notices” on page 497.

Fourth Edition (April 1995)

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 HMM

About This Manual

This manual contains service and reference information for IBM* ThinkPad* computer 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 majority of the manual consists of

product-specific sections that include service, reference, and product-specific parts information.

 The Common Devices Checkout section provides

procedures for testing the devices that are commonly attached to ThinkPad computers.

 The Miscellaneous Information section contains

information about acronyms, abbreviations, terms, and a telephone number listing.

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 7 and “Safety Information” on page 14.

Trademark of the IBM Corporation.

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

ThinkPad 700 (9552) HMS 42G2016, S42G-2016 ThinkPad 700 (9552) HMR 42G2015, S42G-2015 ThinkPad 700C (9552) HMS 42G2022, S42G-2022 ThinkPad 700C (9552) HMR 42G2021, S42G-2021 ThinkPad 720/720C (9552)

HMS ThinkPad 720/720C (9552)

HMR ThinkPad 730T (2524) HMM 82G5497, S82G-5497 ThinkPad Exp. Crtg. (3550)

HMS ThinkPad Exp. Crtg. (3550)

HMR PS/2 FaxConcentrator* HMS 15F2262, S15F-2262 PS/2 FaxConcentrator HMR 84F8541, S84F-8541 PS/2 Comm. Cartridge I

HMS PS/2 Comm. Cartridge I

HMR IBM High Speed Internal,

PCMCIA Data/Fax Modems

30H2356, S82G-1501-01

61G1193, S61G-1193

61G1187, S61G-1187

42G2338, S42G-2338

42G2339, S42G-2339

10G5993, S10G-5993

10G5992, S10G-5992

61G1556, S61G-1556

iv IBM Mobile Systems HMM

Obsolete Publications

This manual obsoletes the following publication:

Publication Part, Form Number

Mobile Systems HMM Volume 2: ThinkPad Computers

82G1502, S82G1502 19H1080, S82G1502

Related Diskettes

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

Diskette Part, Form Number

ThinkPad 300 (2615) Advanced Diagnostics

ThinkPad 350, 350C, 425, 425C (2618) Advanced Diagnostics Diskette

ThinkPad 500 (2603) Adv. Diagnostics Diskette

ThinkPad 510 (2604) Adv. Diagnostics Diskette

ThinkPad 700 (9552) Reference Diskette

ThinkPad 700C (9552) Reference Diskette

ThinkPad 720/720C (9552) Reference Diskette

ThinkPad 750Ce (9545) Hardware Maintenance (for all Models 355x, 360x, 750x, and 755x)

ThinkPad Dock I (3545) 71G4140, S71G-4140 Docking Station (3550) 42G2428, S42G-2428 Data/Fax Modem 61G1556, S61G-1556 FaxConcentrator/A 84F8540, S84F-8540

33G9361, S33G-9361

A211000, GA21-1000

71G3702, S71G-3702

83G8095, S83G-8095

42G2017, S42G-2017

42G2023, S42G-2023

61G1194, S61G-1194

82G3891, S82G-3891

Trademark of the IBM Corporation.

vi IBM Mobile Systems HMM

Contents

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

Portable Computer Descriptions .......... 2

Drive and Diskette Compatibility Matrix ....... 4

Important Service Information ........... 5

Safety Notices (Multi-lingual Translations) ..... 7

Safety Information . . . . . . . . . . . . . . . . 14

Laser Compliance Statement ........... 19

Screw Size Chart ................. 20

ThinkPad 340x (IBM 2610) ............ 23

General Checkout . . . . . . . . . . . . . . . . . 25

Symptom-to-FRU Index . . . . . . . . . . . . . . 34

Related Service Procedures ............ 43

Product Overview . . . . . . . . . . . . . . . . . 48

FRU Removals and Replacements ......... 49

Locations . . . . . . . . . . . . . . . . . . . . . 59

Parts Listing . . . . . . . . . . . . . . . . . . . 62

ThinkPad 700, 700C, 720, 720C (9552) ...... 67

General Checkout . . . . . . . . . . . . . . . . . 68

Symptom-to-FRU Index . . . . . . . . . . . . . . 82

Related Service Procedures ............ 94

Product Overview . . . . . . . . . . . . . . . . 102

FRU Removals and Replacements ........ 104

Locations . . . . . . . . . . . . . . . . . . . . 110

Parts Listing (700) ............... 115

Parts Listing (720, 720C) ............ 118

ThinkPad 701C/701CS (2630) .......... 125

Checkout Guide . . . . . . . . . . . . . . . . 127

Symptom-to-FRU Index . . . . . . . . . . . . . 141

Related Service Procedures ........... 154

Product Overview . . . . . . . . . . . . . . . . 159

FRU Removals and Replacements ........ 161

Locations . . . . . . . . . . . . . . . . . . . . 181

Parts Listing . . . . . . . . . . . . . . . . . . 190

ThinkPad 355x, 360x, 370C, 750x, 755C, 755Cs . 195

Read This First ................. 197

General Checkout . . . . . . . . . . . . . . . . 200

Symptom-to-FRU Index . . . . . . . . . . . . . 216

Related Service Procedures ........... 228

Product Overview . . . . . . . . . . . . . . . . 232

FRU Removals and Replacements ........ 236

Removals Models 355x, 360x .......... 237

Removals Models 370C, 750x, 755C, 755Cs . . . 261

Locations . . . . . . . . . . . . . . . . . . . . 289

Parts Listing . . . . . . . . . . . . . . . . . . 296

ThinkPad 755CD, 755CDV (9545) ........ 315

General Checkout . . . . . . . . . . . . . . . . 317

 Copyright IBM Corp. 1995 vii

Symptom-to-FRU Index . . . . . . . . . . . . . 331

Related Service Procedures ........... 344

Product Overview . . . . . . . . . . . . . . . . 349

FRU Removals and Replacements ........ 350

Locations . . . . . . . . . . . . . . . . . . . . 381

Parts Listing . . . . . . . . . . . . . . . . . . 383

ThinkPad 755CE, 755CSE, 755CV, 755CX (9545) 391

General Checkout . . . . . . . . . . . . . . . . 393

Symptom-to-FRU Index . . . . . . . . . . . . . 408

Related Service Procedures ........... 420

Product Overview . . . . . . . . . . . . . . . . 424

FRU Removals and Replacements ........ 426

Locations . . . . . . . . . . . . . . . . . . . . 458

Parts Listing . . . . . . . . . . . . . . . . . . 460

Common Devices Checkout .......... 469

External Diskette Drive Test ........... 470

External Display Self-Test ............ 470

External Keyboard/Auxiliary Input Device Checkout 471

Fax/Modem Checkout . . . . . . . . . . . . . . 472

Printer Checkout . . . . . . . . . . . . . . . . 474

Port Replicator Checkout ............ 475

TrackPoint II Checkout ............. 476

TV Tuner . . . . . . . . . . . . . . . . . . . . 477

Common Parts Listing ............. 483

Miscellaneous Information . . . . . . . . . . . 489

Acronyms, Abbreviations and Terms ....... 489

Send Us Your Comments! ............ 491

Do You Need Technical References? ...... 492

Problem Determination Tips ........... 493

Phone Numbers, U.S. and Canada ........ 494

Notices . . . . . . . . . . . . . . . . . . . . . 497

viii IBM Mobile Systems HMM

Introduction

Portable Computer Descriptions .......... 2

Drive and Diskette Compatibility Matrix ....... 4

Important Service Information ........... 5

How to Use Error Messages .......... 6

How to Read POST Error Messages ...... 6

Safety Notices (Multi-lingual Translations) ..... 7

Safety Information . . . . . . . . . . . . . . . . 14

General Safety . . . . . . . . . . . . . . . . 14

Electrical Safety . . . . . . . . . . . . . . . . 15

Safety Inspection Guide ............ 16

Handling Electrostatic Discharge-Sensitive Devices 18

Grounding Requirements . . . . . . . . . . . . 18

Laser Compliance Statement ........... 19

Screw Size Chart ................. 20

 Copyright IBM Corp. 1995 1

Portable Computer Descriptions

All models in the following table have VGA video. Models N51, CL57, and P70/75 and Thinkpads 700x and 720x are Micro Channel* systems. All others are AT* bus systems.

Model Type Processor Memory Hrd Dsk

Model L40SX 8543-044 386SX-20 2M/18M 60M Model N45 SL 2614-065 386SL-25 2M/8M 80M

Model N51 SLC 8551-025 386SLC-16 2M/10M 80M Model N51 SX 8551-033 386SX-16 2M/10M 40M Model CL57 SX 8554-045 386SX-20 2M/16M 80M Model P70 386 8573-031 80386-16 2M/8M 30M

Model P75 486 8573-161 80486-33 8M/16M 160M

ThinkPad 300 2615-065 386SL-25 4M/12M 80M

ThinkPad 340 2610 486SLC2-50 4M/12M 125M ThinkPad 350 2618-AOE 486SL-25 4M/20M 85M

ThinkPad 350C 2618-NOA 486SL-25 4M/20M 125M

ThinkPad 355 2619 486SX-33 4M/16M 125M ThinkPad 355C 2619 486SX-33 4M/16M 125M

ThinkPad 355Cs 2619 486SX-33 2M/16M 170M

ThinkPad 360 2620 486SX-33 4M/16M 170M

ThinkPad 360C 2620 486SX-33 4M/16M 170M

ThinkPad 360Cs 2620 486SX-33 4M/16M 170M

ThinkPad 360Ce 2620 486DX2-50/25 4M/16M 170M

ThinkPad 360Cse 2620 486DX2-50/25 4M/16M 170M

ThinkPad 360P 2620 486SX-33 4M/16M 170M

ThinkPad 370C 9545 486DX4-75/25 4M/32M 340M

ThinkPad 500 2603-081 486SLC2-50/254M/12M 80M

ThinkPad 510 2604 486BLC2-50/254M/20M 200M ThinkPad 700 9552-300 486SLC-25 4M/16M 80M

ThinkPad 700C 9552-30B 486SLC-25 4M/16M 120M

C Color M Megabyte P Pen

2614-067 386SL-25 2M/8M 120M

8573-061 80386-20 2M/8M 60M 8573-121 80386-20 2M/8M 120M

8573-401 80486-33 8M/16M 400M

2615-067 386SL-25 4M/12M 120M

2618-JOA 486SL-25 4M/20M 125M 2618-LOA 486SL-25 4M/20M 250M

2618-POA 486SL-25 4M/20M 250M

2619 486SX-33 4M/16M 250M

2619 486SX-33 2M/16M 250M

2620 486SX-33 4M/16M 340M

2620 486DX2-50/25 4M/16M 340M 2620 486DX2-50/25 4M/16M 540M

2620 486SX-33 4M/16M 340M

9545 486DX4-75/25 4M/32M 540M 9545 486DX4-75/33 4M/32M 810M

2603-171 486SLC2-50/254M/12M 170M

9552-301 486SLC-25 4M/16M 120M

T Tablet TPF ThinkPad File

Trademark of the IBM Corporation.

2 IBM Mobile Systems HMM

Model Type Processor Memory Hrd Dsk

ThinkPad 701C 2630 486DX2-25/50 4M/32M 360MB

ThinkPad 701Cs 2630 486DX2-25/50 4M/32M 360MB

ThinkPad 710T 2523-09Y 486SLC2-25 4M/12M TPF

ThinkPad 720 9552-307 486SLC-25/50 4M/16M 120M

ThinkPad 720C 9552-30J 486SLC-25/50 4M/16M 160M ThinkPad 730T 2524 486SLC2-25 4M/12M 0M

ThinkPad 750 9545-006 486SL-33 4M/20M 170M

ThinkPad 750C 9545-306 486SL-33 4M/20M 170M

ThinkPad 750Ce 9545 P24S-50/25 4M/20M 340M ThinkPad 750Cs 9545 486SL-33 4M/20M 170M

ThinkPad 750P 9545-40C 486SL-33 4M/20M 170M

ThinkPad 755C 9545 486DX4-50/25 4M/32M 170M

ThinkPad 755CD 9545 486DX4-100/33 8M/32M 540M

ThinkPad 755CDV 9545 486DX4-100/33 8M/32M 540M

ThinkPad 755Ce 9545 486DX4-100/33 8M/32M 340M

ThinkPad 755Cs 9545 486DX4-50/25 8M/32M 170M

ThinkPad 755Cse 9545 486DX4-100/33 8M/32M 340M

ThinkPad 755CV 9545 486DX4-100/33 8M/32M 540M

C Color M Megabyte P Pen

2630 486DX2-25/50 4M/32M 540MB 2630 486DX4-25/75 8M/32M 360MB 2630 486DX4-25/75 8M/32M 540MB

2523-302 486SLC2-25 4M/12M 60M 2523-303 486SLC2-25 4M/12M 60M

9552-308 486SLC-25/50 4M/16M 160M

2524 486SLC2-25 4M/12M 60M

9545-008 486SL-33 4M/20M 340M

9545-308 486SL-33 4M/20M 340M

9545 486SL-33 4M/20M 340M

9545-40E 486SL-33 4M/20M 340M

9545 486DX4-50/25 4M/32M 340M 9545 486DX4-50/25 4M/32M 540M 9545 486DX4-75/25 4M/32M 170M 9545 486DX4-75/25 4M/32M 340M 9545 486DX4-75/25 4M/32M 540M

9545 486DX4-100/33 8M/32M 810M

9545 486DX4-100/33 8M/32M 540M 9545 486DX4-100/33 8M/32M 810M

9545 486DX4-50/25 8M/32M 340M 9545 486DX4-50/25 8M/32M 540M 9545 486DX4-75/25 8M/32M 170M 9545 486DX4-75/25 8M/32M 340M 9545 486DX4-75/25 8M/32M 540M

9545 486DX4-100/33 8M/32M 540M 9545 486DX4-100/33 8M/32M 810M

9545 486DX4-100/33 8M/32M 810M

T Tablet TPF ThinkPad File

Introduction 3

Drive and Diskette Compatibility Matrix

The following table provides identification information for

3.5-inch drives.

Diskette Drive

3.5-Inch - 1.44MB 1.44 on the eject button

3.5-Inch - 2.88MB 2.88 on the eject button

Identifying Mark

The following table provides compatibility information for

3.5-inch diskettes and 3.5-inch diskette drives.

Diskette Capacity

1.0MB Read/Write Read/Write

2.0MB Read/Write Read/Write

4.0MB Not Compatible Read/Write

1.44MB Drive

2.88MB Drive

The following table provides identification information for

5.25-inch diskette drives.

Diskette Drive

5.25-Inch - 360KB (External) Asterisk on bezel

5.25-Inch - 1.2MB (Internal) 1.2 on the eject button

Identifying Mark

The following table provides compatibility information for

5.25-inch diskettes and 5.25-inch diskette drives.

Diskette Capacity

360KB Read/Write Read/Write

1.2MB Not Compatible Read/Write

360KB Drive

1.2MB Drive

Note: A 360KB diskette written to or formatted on a

1.2MB drive can be read reliably only on a 1.2MB drive.

4IBM Mobile Systems HMM

Important Service Information

Important

Diskette fixes are customer installable. The diskette fixes are located on the PC Company Bulletin Board Service (BBS). The direct phone line for modem connection is 919-557-0001 or tieline 255-0001.

Advise customers to contact the PC Company HelpCenter at 800-772-2227 if they need assistance in obtaining or installing any diskette fixes.

Customers in Canada should call IBM HelpPC at 800-565-3344 for assistance or down-load information. The Canadian BBS phone numbers are:

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

FRU Replacement Strategy

Before Replacing Parts

Ensure that all diskette fixes are installed prior to replacing any FRUs listed in this manual.

Use the following strategy to prevent unnecessary FRU replacement and service expense:

 If you are instructed to replace a FRU and that

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

 Some computers have both a processor board and a

system board. If you are instructed to replace either the processor board or the system board, and the first board that you replaced does not correct the problem, reinstall the original board, then replace the other (processor or system) board.

 If an adapter or device consists of more than one

FRU, an error code may be caused by any of the FRUs. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the FRU that changed the symptoms.

Warning: 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.

Introduction

The advanced diagnostic tests are intended to test

only

IBM products. Non-IBM products or modified options can give false errors and invalid responses.

Hard Disk Drive Replacement Strategy:

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

Warning: 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)

6 IBM Mobile Systems 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 7

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.

8 IBM Mobile Systems 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 9

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.

10 IBM Mobile Systems 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 11

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.

12 IBM Mobile Systems 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 13

Safety Information

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

General Safety

Follow these rules to ensure general safety:

 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. Remember: 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

14 IBM Mobile Systems 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. Remember: 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.

Remember: 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

 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

16 IBM Mobile Systems 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

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.

18 IBM Mobile Systems HMM

Laser Compliance Statement

The CD-ROM drive in the ThinkPad computer is a laser product. The CD-ROM drive's classification label (shown below) is located on the drive.

CLASS 1 LASER PRODUCT LASER KLASSE 1 LUOKAN 1 LASERLAITE APPAREIL A LASER DE CLASSE 1 KLASSE 1 LASER APPARAT

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.

In other countries, the drive is certified to conform to the requirements of EN60825.

CAUTION: Do not open the drive; no user adjustments or serviceable parts are inside.

Class 1 laser products are not considered to be hazardous. The CD-ROM drive has an internal Class I (1),

0.5-milliwatt, aluminum gallium-arsenide laser that operates at a wavelength of 760 to 810 nanometers.

The design of the laser system and the CD-ROM drive ensures that there is no exposure to laser radiation above a Class 1 (1) level during normal operation, user maintenance, or servicing conditions.

Introduction

Screw Size Chart

Use the chart below to match the size and shape of the screws used in the computer you are servicing.

Silver

Black

Silver

Brass

Black

Brass

Silver

Brass

Silver

Black

Brass

20 IBM Mobile Systems HMM

Screw Size Chart (continued):

to match the size and shape of the screws used in the computer you are servicing.

Use the chart below

Brass

Black

Brass

Black

Brass

Black

Brass

Black

Brass

Black

Introduction 21

Black

Silver

Screw Size Chart (continued):

to match the size and shape of the screws used in the computer you are servicing.

Use the chart below

Silver

Brass

Silver

Black

Brass

Silver

Brass

Black

Silver

Black

22 IBM Mobile Systems HMM

ThinkPad 340x (IBM 2610)

General Checkout . . . . . . . . . . . . . . . . . 25

Memory Checkout . . . . . . . . . . . . . . . 26

System Board . . . . . . . . . . . . . . . . . 27

Keyboard/Auxiliary Input Device Checkout .... 27

TrackPoint II and III Checkout ......... 28

Diskette Drive Test .............. 28

Power Systems Checkout ........... 29

Power Management Features ......... 33

Symptom-to-FRU Index . . . . . . . . . . . . . . 34

Numeric Error Codes .............. 35

FRU Codes . . . . . . . . . . . . . . . . . . 37

Beep Symptoms . . . . . . . . . . . . . . . . 38

No Beep Symptoms .............. 38

LCD Related Symptoms ............ 39

Keyboard/TrackPoint II or III Related Symptoms . 40

Indicator Related Symptoms .......... 40

Power Related Symptoms ........... 40

Function/Audio Related Symptoms ....... 41

Peripheral Device Related Symptoms ...... 42

Other Symptoms . . . . . . . . . . . . . . . . 42

Intermittent Problems . . . . . . . . . . . . . 42

Undetermined Problems . . . . . . . . . . . . 42

Related Service Procedures ............ 43

Status Indicators . . . . . . . . . . . . . . . . 44

How to Run the Diagnostics .......... 45

Error Log . . . . . . . . . . . . . . . . . . . 45

Reset Pushbutton . . . . . . . . . . . . . . . 46

Checking the Installed Devices List ....... 46

How to Run the Low Level Format ....... 46

PC Test Card LED ............... 46

Fn Key Combinations ............. 47

How To Run the Keyboard Diagnostics ..... 47

Product Overview . . . . . . . . . . . . . . . . . 48

FRU Removals and Replacements ......... 49

1010 Rear Connector Door .......... 50

1020 Battery Pack . . . . . . . . . . . . . . 50

1030 Backup Battery . . . . . . . . . . . . . 51

1040 IC DRAM Card ............. 51

1050 Standby Battery . . . . . . . . . . . . . 51

1060 Top Cover . . . . . . . . . . . . . . . 52

1070 Indicator Card . . . . . . . . . . . . . . 53

1080 Keyboard Unit . . . . . . . . . . . . . . 54

1090 LCD Assembly . . . . . . . . . . . . . 55

1100 Diskette Drive . . . . . . . . . . . . . . 57

1110 Hard Disk Drive ............. 57

1120 System Board/Speaker . . . . . . . . . . 58

Locations . . . . . . . . . . . . . . . . . . . . . 59

System (Front View) .............. 59

System (Rear View) .............. 60

System (Interior View) ............. 60

System Board . . . . . . . . . . . . . . . . . 61

 Copyright IBM Corp. 1995 23

Indicator Card . . . . . . . . . . . . . . . . . 61

Parts Listing . . . . . . . . . . . . . . . . . . . 62

Option Parts List ................ 65

24 IBM Mobile Systems HMM

General Checkout

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

2. Verify the symptom. Attempt to recreate the failure by running the diagnostic tests or retrying the same operation.

Note: To run the diagnostics, refer to “How to Run

the Diagnostics” on page 45.

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.

Symptom Go to

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

POST does not complete. No beeps/error code are indicated.

POST beeps, but no error codes are displayed.

POST detected an error and displayed numeric error codes.

The diagnostic test detected an error and displayed an FRU code.

The configuration is not the same as the installed devices.

Other symptoms (such as LCD display problems).

Symptoms cannot be recreated. (Intermittent problems.)

“Power Systems Checkout” on page 29.

“Symptom-to-FRU Index” on page 34, and then use the No Beep Symptoms table.

“Symptom-to-FRU Index” on page 34, and then use the Beep Symptoms table.

“Symptom-to-FRU Index” on page 34, and then use the Numeric Error Codes table.

“FRU Codes” on page 37.

“Checking the Installed Devices List” on page 46.

“Symptom-to-FRU Index” on page 34, and then use the table for related symptoms.

Use the customer reported symptoms and go to “Symptom-to-FRU Index” on page 34.

ThinkPad 340x (IBM 2610) 25

Memory Checkout

See the following table for the available memory size of each card.

IC DRAM Memory size

0 MB 3712 KB 2 MB 5760 KB 4 MB 7808 KB 8 MB 11904 KB

Memory errors might stop system operations, show error messages on the screen, or hang the system.

Use the following procedure to isolate memory problems.

Note: Make sure that the memory card is fully

installed into the connector. Loose connections can cause errors.

1. Power-off the computer and remove the IC DRAM card from its slot (if installed).

2. Press and hold the F1 key; then power-on the computer. Hold the F1 key down until the Easy-Setup screen appears.

3. Select Test and press enter.

4. Select Memory and press enter to run the memory test on base memory. If an error appears, replace the system board.

5. Power-off the computer and reinstall the IC DRAM card; then power-on the computer. Verify the memory size; then test the memory. If an error appears, replace the IC DRAM card.

If memory problems occur intermittently, use the loop option to repeat the test. When the test detects an error, an error log is printed on the printer connected to the parallel port. See “Error Log” on page 45 for more information.

System Programs in Flash Memory:

System setup

programs and diagnostic tests are stored in Flash memory.

Flash Memory Update:

A flash memory update is

required for the following conditions:

 Connecting the AC Adapter, and installing the

charged

battery pack in the computer.

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

To update the flash memory, do the following.

1. Get the appropriate diskette which contains 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.

26 IBM Mobile Systems HMM

System Board

The processing functions for the computer are performed by the system board. When a numeric code calls out the system board, use the following procedure to isolate the problem.

1. Run the system board test to verify the symptom. This test verifies the system board. If no error is detected, return to “General Checkout” on page 25.

2. If FRU code 10 appears, replace the system board.

3. Rerun the test to verify the fix.

If above procedure does not correct the problem, go to “Undetermined Problems” on page 42.

Keyboard/Auxiliary Input Device Checkout

Remove the external keyboard if the internal keyboard is to be tested.

If the internal keyboard does not work or an unexpected character appears, make sure that the three flexible cables extending from the keyboard are correctly seated in the connectors on the system board.

If the keyboard cable connection is correct, run the Keyboard Test by doing the following:

1. Go to advanced diagnostic menu screen by pressing Ctrl+A in the basic diagnostic menu.

2. Press Ctrl+K; a layout of the keyboard appears on the screen.

3. Check that when each key is pressed, the key position on the keyboard layout on the screen changes to a black square.

Notes:

a. When a Fn key is pressed, a black square briefly

appears.

b. Press the Esc key to return to the diagnostic

menu.

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.

 Reseat the three cables.  Replace the keyboard.  Replace the system board.

The following auxiliary input devices are supported for this computer.

 Numeric keypad

 Mouse (PS/2 compatible)  External keyboard (with keyboard/mouse cable)

ThinkPad 340x (IBM 2610)

If any of the above devices do not work, reseat the cable connector and repeat the failing operation.

If the problem does not occur again, recheck the connector.

If the problem is not corrected, replace the device, and then the system board.

TrackPoint II and III Checkout

If the TrackPoint II or III will not work, check the configuration in Easy-Setup by selecting Keyboard from the Config menu. If the configuration of the TrackPoint II or III is disabled, select TrackPoint to enable it. If this does not correct the TrackPoint II or III problem, continue with the following.

The TrackPoint II or III 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 II or III pointer while the computer is powered on or while the system is running, or re-adjustment is required because the temperature has exceeded its normal operating 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. Go to the Easy-Setup screen.

2. Select an item with the pointing stick.

3. Press either the left or right click button.

4. Verify that both buttons work correctly.

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

 Reseat the three keyboard cables.  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 2HD diskette is required.

Note: 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.

1. Do following to select the test device:  Select the advanced diagnostic mode and select

Tool; then select the icon FDD and press the

28 IBM Mobile Systems HMM

space key. A √ mark appears next to the selected icon. Insert the blank diskette when instructed.

2. Run the diskette drive test.

3. If the controller test detects an error, FRU code 10 appears. Replace the system board.

4. If the controller test runs without errors, the drive read/write tests start automatically.

5. If the drive test detects an error, FRU code 50 appears. If the diskette itself is known to be good, replace the drive.

If no errors occur at the FDD position, the drive is not defective.

Power Systems Checkout

To verify the symptom of the problem, power-on the computer using each of the power sources available as follows.

1. Remove the battery pack.

2. Connect the AC Adapter and check that power is supplied.

3. Disconnect the AC Adapter and install the charged battery pack; then check that power is supplied by battery pack.

If you suspect a power problem, see the appropriate power supply check listed below.

 “Checking the AC Adapter.”  “Checking the Battery Pack” on page 30.  “Checking the Backup Battery” on page 31.  “Checking the Standby Battery” on page 32.

Checking the AC Adapter: You are here

because the computer fails only when the AC Adapter is used. If the power-on indicator does not turn on, check the power cord of the AC Adapter for correct continuity and installation.

1. Unplug the AC Adapter cable from the computer and measure the output voltage at the plug of the AC Adapter cable. See the following figure.

ThinkPad 340x (IBM 2610)

AC Adapter (30W, 40W):

Pin Voltage (V dc)

1 +17.1 to +18.9 2 Return

AC Adapter (35W):

Pin Voltage (V dc)

1 +15.5 to +17.0 2 Return

 If the voltage is correct, replace the system

board. If the problem is not corrected, go to “Undetermined Problems” on page 42.

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

2. Unplug the AC Adapter cable from the ac power outlet and wait five minutes or longer to allow the protection circuit to be fully discharged and initialized.

3. Plug the AC Adapter cable into the ac power outlet.

4. Measure the output voltage of the AC Adapter.

5. If the voltage is still not correct, replace the AC Adapter.

Note: An audible noise from the AC Adapter does not

always indicate a defective adapter.

Checking the Battery Pack

1. Power-off the computer.

2. Remove the battery pack and measure the voltage between battery terminals 1 (+) and 4 (−). See the following figure.

30 IBM Mobile Systems HMM

()

Voltage (V dc) / Signal

Terminal

1 +10.0 to +18.0 +10.0 to +16.0 2 NC 0 Ω+0 ground (−) 3 10 kΩ between ground (−) 4 Ground (−)

340 (NiCd) 340CSE (NiMH)

3. If the voltage is less than +10.0 V dc, the battery pack has been discharged or is defective. Recharge the battery. If the recharging does not work, go to Step 5 to check the charging circuit.

If the voltage is still less than +10.0 V dc after the recharging, replace the battery.

4. If the voltage is more than +8.0 V dc, measure the resistance between battery terminals 3 and 4. The resistance must be 4 to 30 kilohms.

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

If the resistance is correct, replace the system board.

5. To check the charging circuit, do the following. Plug in the AC Adapter with the battery pack removed; then power-on the computer.

6. Measure the charging voltage between terminals 1 (+) and 4 (−) on the computer.

7. If the voltage is less then +10.0 Vdc, replace the system board. If the voltage is more than +10.0 Vdc, the charging circuit is working correctly, replace the battery pack.

Checking the Backup Battery

1. Power-off the computer and unplug the AC Adapter from the computer.

2. Remove the backup battery.

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

ThinkPad 340x (IBM 2610) 31

Red

Black

Wire Voltage (V dc)

Red +2.9 to +3.3 Black Ground

 If the voltage is correct, replace the system board.  If the voltage is not correct, the backup battery has

been discharged. Replace the backup battery.

 If the backup battery discharges quickly after

replacement, replace the system board.

Checking the Standby Battery: Be careful not

to cause a short circuit when measuring the voltage.

1. Power-off the computer and unplug the AC Adapter from the computer.

2. Remove the standby battery.

3. Measure the voltage of the standby battery.

 If the voltage between red and black is 3.5 V dc

or greater, the voltage is correct. Go to Step 9 on page 33 to verify standby battery operation.

 If the voltage is less than 3.5 V dc, go to the

next step.

4. Plug the AC Adapter into the computer and power-on the computer.

5. Measure the output voltage at the connector on the system board.

32 IBM Mobile Systems HMM

Black

Pin Voltage (V dc)

+ +4.0

− Ground

Red

 If the voltage is less than +4.0 V dc, replace the

system board.

 If the voltage is more than +4.0 V dc, power-off

the computer, replace the standby battery, and go to the next step.

6. Ensure that the AC Adapter is plugged into the computer; then power-on the computer.

7. Charging of the standby battery starts. A depleted battery needs approximately 30 minutes to be recharged to the operational voltage of +3.5 V dc.

8. Unplug the AC Adapter.

9. Verify the standby battery function by removing and installing the battery pack during suspend mode.

Note: Removing and installing the battery pack

during suspend mode should be done within one minute.

The resume operation must start. If the resume operation does not work, switching of power from the battery pack to standby battery will not be correct. Replace the system board.

Power Management Features

Two power management modes are provided by the computer to save power consumption and prolong battery power. For the details of the two modes, see the latest volume of the computers.

Standby Mode: When in standby mode, the

following occurs:

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

ThinkPad 340x (IBM 2610)

Hardware Maintenance Manual

for ThinkPad

Suspend Mode: When in suspend mode, the

following occurs:

 The LCD power is powered-off.  The hard disk is powered-off.  The CPU is stopped.

Notes:

1. In the ThinkPad Features Program, the computer can be set to “Will not suspend even if LCD is closed.”

2. When the computer is powered with ac power and is used with one of the following IBM PC cards, the computer enters PC card and application program remain active.

 3270 Emulation Credit Card Adapter  5250 Emulation Credit Card Adapter  Token-Ring 16/4 Credit Card Adapter  Credit Card Adapter for Ethernet

3. During the following conditions, the computer cannot enter suspend mode.

 While the communication link is running.  When a serial mouse or other pointing

device are selected in the Config menu of Easy-Setup.

standby mode

; the

Symptom-to-FRU Index

The Symptom-to-FRU Index lists the symptoms, errors, and possible causes. (It can be used to help you decide which FRUs to have available when servicing the computer.) The most likely cause is listed first.

Perform the FRU replacement or actions in the sequence shown in the “FRU/Action” column. If a FRU does not solve the problem, put the original part back in the computer and perform the next action.

Numeric error codes show the errors detected in POST or system operation. 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 42. Note: For IBM devices not supported by diagnostic codes

for the Model 340 and 340CSE, see the manual for that device.

34 IBM Mobile Systems HMM

Numeric Error Codes

Symptom/Error FRU/Action 10X 1. System Board 110 1. Go to “Memory

111 1. Go to “Memory

161 1. Go to “Checking the

163

(Time and Date was not set.)

173

(Configuration data were lost.)

174

(Perform “Checking the Installed Devices List” on page 46 before changing any FRUs.)

184

(POP check sum error.)

190

(A depleted battery pack was installed when the power was on.)

191XX 1. System Board 199XX 1. System Board 1XX 1. System Board 2XX 1. Go to “Memory

Checkout” on page 26.

2. IC DRAM Card

3. System Board

Checkout” on page 26.

2. System Board

Backup Battery” on page 31.

2. Backup Battery

3. System Board

1. Set Time and Date.

2. System Board

1. Select OK in the error

screen; then set time and date.

2. Backup Battery

3. System Board

1. Check Device

Configuration.

2. System Board

3. Diskette Drive Assembly

4. Hard Disk Drive Assembly

1. Reset the POP in

Easy-Setup.

1. Go to “Checking the Battery Pack” on page 30.

Checkout” on page 26.

2. IC DRAM Card

3. System Board

ThinkPad 340x (IBM 2610) 35

Symptom/Error FRU/Action 301, 303, 304, 305, 3XX 1. Go to

601, 6XX 1. Go to “Diskette Drive

602

(Diskette read error.)

604

(Non-acceptable ID was read from the diskette drive.)

11XX 1. Serial Device (First)

12XX 1. Serial Device

17XX 1. Hard Disk Drive

24XX 1. System Board 808X 1. PCMCIA Slot

860X

(Pointing device error when TrackPoint II or III is disabled.)

861X

(Pointing device error when TrackPoint II or III is enabled.)

“Keyboard/Auxiliary Input Device Checkout” on page 27.

2. Keyboard

3. External Numeric Keypad

4. External Keyboard

5. Keyboard/Mouse Cable

6. System Board

Test” on page 28.

2. Diskette Drive Assembly

3. Diskette

4. System Board

1. Go to “Diskette Drive

Test” on page 28.

2. Diskette

3. Diskette Drive Assembly

1. Go to “Diskette Drive

Test” on page 28.

2. Diskette Drive Assembly

3. System Board

2. Communication Cable

3. System Board

(Second)

2. Communication Cable

3. System Board

2. System Board

Assembly

2. PCMCIA Device

3. System Board

1. External Mouse

2. External Keyboard

3. System Board

1. Reseat the keyboard

TrackPoint II or III cable. (See “1080

Keyboard Unit” on page 54.)

2. Keyboard

3. External Mouse

4. System Board

36 IBM Mobile Systems HMM

Symptom/Error FRU/Action I9990301

I9990302 I9990305

I9990303 1. System Board Other codes not listed

above

1. Reseat the boot

device.

2. Check the startup sequence for the correct boot device.

3. Check that the operating system has no failures, and is installed correctly.

1. Go to “Undetermined

Problems” on page 42.

FRU Codes

If an error is detected by the diagnostic tests, a FRU code is displayed. The FRU code indicates two suspected FRUs. Replace the FRU that is indicated by the

two leftmost digits

by the

two rightmost digits

first, then replace the FRU indicated

. No FRU is assigned to code

00. If only one FRU is suspected, the other FRU code is filled with zeros. See the referenced page before replacing the FRU.

FRU Code FRU/Action

10 System Board 20 Memory

30 Reserved 32 External Keyboard 33 External Mouse 40 LCD Assembly 45 External CRT 50 1. Reseat the Diskette Drive

60 1. Reseat the Hard Disk Drive

81 Internal Modem Card (if installed) 90 Reserved

(See “Memory Checkout” on page 26.)

2. Diskette Drive

2. Hard Disk Drive

four-digit

Note: The device ID and error codes are used to indicate

the detail portion of the FRU which caused the error. If replacing a FRU does not correct a problem, see the Device ID or error code from the previous failure. If they have changed, the cause might be because the new FRU is defective or that the FRU was incorrectly installed.

If the problem remains after replacement of the FRUs, go to “Undetermined Problems” on page 42.

ThinkPad 340x (IBM 2610) 37

Beep Symptoms

Symptom/Error FRU/Action

Continuous beeps. 1. System Board One beep and a blank,

unreadable, or flashing LCD.

One beep, and the message “Unable to access boot source.”

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

One long beep followed by four short beeps each time the power switch is operated. (System cannot power-on due to low battery voltage.)

One long and one short beep.

One beep every second. (System is shutting down due to low battery voltage.)

Two short beeps with error codes.

Two short beeps with blank screen.

1. Reseat the LCD connector. (See “1090 LCD Assembly” on page 55.)

2. LCD Assembly

3. System Board

1. Reseat the boot

device.

2. Boot Device

3. System Board

1. System Board

2. LCD Assembly

1. Connect the AC

Adapter or install a fully-charged battery.

1. System Board

1. Connect the AC

Adapter or install a fully-charged battery (allows the system to completely shutdown before the battery is charged).

1. POST error. (See “Numeric Error Codes” on page 35.)

1. System Board

No Beep Symptoms

Symptom/Error FRU/Action

No beep, power-on indicator not on, and a blank LCD during POST.

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

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

38 IBM Mobile Systems HMM

1. Go to “Power Systems Checkout” on page 29.

2. System Board

3. Power Sources

1. System Board

Symptom/Error FRU/Action

No beep during POST, but system runs correctly.

1. Turn the volume up

and listen to the speaker.

2. Speaker

LCD Related Symptoms

Symptom/Error FRU/Action

Flicker 1. Do not replace any

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, or

 Characters missing

pels, or

 Screen abnormal, or

 Wrong characters

displayed.

LCD has extra horizontal or vertical lines displayed.

FRUs. In certain brightness/contrast settings, screen flicker can be seen because of technical limitations.

1. System Board

1. Reseat the LCD connector. (See “1090 LCD Assembly” on page 55.)

2. LCD Assembly

1. Reseat the LCD connector. (See “1090 LCD Assembly” on page 55.)

2. System Board

3. LCD Assembly

1. LCD Assembly

LCD FRU Replacement Notice: If missing or

discolored dots appear on the LCD, carefully read the following note to determine whether you should replace the LCD.

 Do not replace the LCD for defective pixels if dots

that are less than half the area of a pixel are defective (a total of 11 dots are allowed).

 The LCD is not defective if the dots are functional but

are slightly different in color from the immediate, surrounding area or appear as a “stain”.

ThinkPad 340x (IBM 2610) 39

Keyboard/TrackPoint II or III Related Symptoms

Symptom/Error FRU/Action

Keyboard (one or more keys) does not work, or works intermittently.

TrackPoint II or III does not work.

Pointer moves automatically or does not work correctly.

1. Reseat the three

keyboard cables.

2. Reseat the keytop. Ensure the rubber dome under the keytop is straight and in the correct direction, with the larger radius on the top.

3. Keyboard

4. System Board

1. Go to “TrackPoint II

and III Checkout” on page 28.

2. Keyboard

3. System Board

1. See “TrackPoint II

and III Checkout” on page 28.

Indicator Related Symptoms

Symptom/Error FRU/Action

Indicator incorrectly remains off or on, but system runs correctly.

Battery power status indicator blinks from green, yellow, to orange.

1. Reseat the indicator card.

2. Indicator Card

3. System Board

1. Check that a correct

battery is installed.

2. Battery Pack

3. System Board

Power Related Symptoms

Symptom/Error FRU/Action

Power shut down during operation.

The system will not power-off. (See “Reset Pushbutton” on page 46.)

40 IBM Mobile Systems HMM

1. Go to “Power Systems Checkout” on page 29.

2. Battery Pack

3. Remove the battery pack and let it cool for two hours.

4. Power Sources

1. Press the Reset

pushbutton.

2. System Board

Function/Audio Related Symptoms

Symptom/Error FRU/Action

The system will not suspend or resume by opening or closing the keyboard.

The system will not suspend or resume by opening or closing the LCD.

Battery Fuel-Gauge does not go higher than 90%.

Modem problems. (If installed)

Memory count (size) appears differently from actual size.

System configuration does not match the installed devices.

System hangs intermittently. 1. Go to “Intermittent

1. Go to “Suspend

Mode” on page 34 and check that the computer can enter suspend mode.

2. Go to the Easy-Setup screen and press Fn+4. If the computer enters suspend mode, suspect that the application program is defective.

3. System Board

1. Go to “Suspend

Mode” on page 34 and that check that the computer can enter suspend mode.

2. Go to the Easy-Setup screen and press Fn+4. If the computer enters suspend mode, suspect that the application program is defective.

3. System Board

1. Go to “Checking the

Battery Pack” on page 30 and see the note.

1. Run the Internal Modem Test.

2. Check that the port is set to enable in Easy Setup.

3. Check that the port power is switched on by PS2.EXE.

4. Modem Card (if installed)

1. Go to “Memory

Checkout” on page 26.

1. Go to “Checking the Installed Devices List” on page 46.

Problems” on page 42.

ThinkPad 340x (IBM 2610) 41

Peripheral Device Related Symptoms

Symptom/Error FRU/Action

External display does not work correctly.

Printer problems. 1. Run Printer Self-test.

Serial or parallel port device problems.

1. See “External Display

Self-Test” in the “Common Devices Checkout” section.

2. System Board

3. Parallel Port Device

4. Cable

1. Device

2. Device Cable

3. System Board

Other Symptoms

Symptom/Error FRU/Action

PCMCIA slot pin is damaged.

1. System Board

Note: If you cannot find a symptom or error in this list

and the problem remains, see “Undetermined Problems.”

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. FRUs replacement should only be considered when a recurring problems exists.

When analyzing the intermittent problem, do the following:

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

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

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

Undetermined Problems

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 (do not isolate non-defective FRUs).

Verify that all attached devices are supported by the computer.

Verify that the power supply being used at the time of the failure is operating correctly. (See “Power Systems Checkout” on page 29.)

1. Power-off the computer.

42 IBM Mobile Systems HMM

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. a. Non-IBM devices

b. Devices attached to the expansion bus

connector

c. Printer, mouse, and other external devices

d. Battery pack

e. IC DRAM card

f. PC cards

Note: Remember that removing the hard disk

drive, an IC DRAM card, or any adapter or device, might cause configuration errors. Ignore error code 174.

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.

 Modem card (if installed)  LCD assembly  System board

Related Service Procedures

This section provides information about the following:

 “Status Indicators” on page 44  “How to Run the Diagnostics” on page 45  “Error Log” on page 45  “Reset Pushbutton” on page 46  “Checking the Installed Devices List” on page 46  “How to Run the Low Level Format” on page 46  “PC Test Card LED” on page 46  “Fn Key Combinations” on page 47  “How To Run the Keyboard Diagnostics” on page 47

ThinkPad 340x (IBM 2610)

Status Indicators

The system status indicators show the current computer status in different colors (green, yellow, and orange).

Symbol Color Meaning

Green Battery is fully

Yellow (340) Battery usable.

Orange Battery is low Blinking orange Battery is almost

Blinking yellow (340)

Off (340CSE) The battery in

Orange Diskette drive is

Orange Hard disk drive

Green Keyboard is in

charged.

Battery is charging (when the AC Adapter is used).

Note: When

the battery is fully charged, the indicator turns and stays green.

depleted Battery cannot

be charged because of it's high temperature.

Note: When

the temperature drops to the acceptable range, charging will start.

not installed.

in-use

Num Lock mode

Green Keyboard is in

Caps Lock mode

Scroll Lock mode

44 IBM Mobile Systems HMM

Symbol Color Meaning

Green Computer is

powered on

How to Run the Diagnostics

Use either the TrackPoint II or III or the cursor move keys to interact with the tests. The Enter key works the same as selecting the OK icon to reply OK.

1. Press and hold the F1 key; then power-on the computer. Hold the F1 key down until the Easy-setup screen appears.

2. Select Test and press Enter.

3. Select a device and press Enter to run the test.

4. The test progress screen appears.

5. OK appears when the test ends without any errors.

6. Start the Advanced Diagnostic test by pressing Ctrl+A on the basic diagnostic menu screen.

7. Select Tool to install the tools.

8. Select a device, press the space key, and install the tool. Multiple devices can be selected by repeating this step.

A √ mark appears for the selected device.

9. Select OK and press Enter if the selection is OK.

10. Select a device and press Enter to start the tests.

11. Select Test All to test all devices.

12. Select Loop Test to loop tests. A loop option menu appears in which a device loop or

all loop can be selected. Select a device and press the space key to select a device. Repeat this step to select multiple devices. Press Enter to start the diagnostic loop. If no device is selected, all device tests are looped.

13. To exit the loop, keep pressing Ctrl+Pause until the test exits.

Error Log

Diagnostic errors are printed on the printer that is attached to the parallel port when the error is detected. The error is also logged in the system memory.

Do the following to display the errors.

1. End the test, if it is running.

2. Press Ctrl+A to select the advanced diagnostic mode.

3. Press Ctrl+E.

4. The error log appears.

5. To exit the screen, select the cancel icon or press Esc.

The error log is not saved when system power is powered-off.

ThinkPad 340x (IBM 2610)

Reset Pushbutton

The reset pushbutton resets the system and forces the power to be powered-off .

Note: Use this pushbutton when the power is not

completely off or the system is hung. See “System Board” on page 61 for the location of the pushbutton.

Checking the Installed Devices List

If a device is installed but the icon appears in a gray shade rather than a dark shade on the basic diagnostics screen, the device is defective. Reseat the device connectors. If the symptom remains, replace the device or the system board. If needed, adjust the contrast control to clearly distinguish the shades of the icon.

If a device that is not installed appears in a dark shade, do the following.

1. Replace the first device, such as a FDD, HDD, or PCMCIA.

2. If the problem remains, replace the system board.

PCMCIA, Parallel, and Serial icons are always displayed in dark shade, because the icons represent subsystems of the system board and not attachment of the devices.

How to Run the Low Level Format

Do the following to format the hard disk.

Before Formatting the Hard Disk

Make sure that the address of the drive to be formatted is correct. This procedure will erase all information on the disk.

1. Power-off the computer.

2. Insert the ThinkPad 750Ce hardware maintenance diskette into diskette drive A and power-on the computer.

Note: You can use this maintenance diskette for the

Model 340CSE.

3. Select Format the hard disk from the main menu.

4. Select the drive from the menu.

5. Follow the instructions on the screen.

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 it. If the LED still does not turn on after the card 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 in the diagnostic error code.

46 IBM Mobile Systems HMM

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 Reserved F2 Fuel-gauge display ON/OFF F3 Standby mode invocation F4 Suspend mode invocation F5 Audio volume Down F6 Audio volume UP F7 LCD/CRT display switching F8 LCD normal/reverse switching F9 Reserved F10 Reserved F11 Power management mode switching

F12 Reserved

(Toggles High power, Medium, Low)

How To Run the Keyboard Diagnostics

Do the following to run the keyboard test.

1. Go to the advanced diagnostic screen menu by pressing Ctrl+A in the Easy-Setup menu.

2. Go to the keyboard diagnostic test menu by pressing Ctrl+K.

3. Check that when each key is pressed, the key position on the keyboard layout on the screen changes to a black square.

Note: When a Fn key is pressed, the black square

briefly appears.

ThinkPad 340x (IBM 2610)

Product Overview

The following table shows an overview of the system features.

Feature Description

Processor  340

Memory (Standard)

Memory (Option) 2MB, 4MB, 8MB, IC DRAM card

CMOS RAM 128 Bytes VGA Video  340

Diskette Drive  0.720MB, 1.44MB (2-mode),

Hard Disk Drive  340

PCMCIA One Type-III or Type-II

– IBM486 SLC 25/50MHz, on

the system board

 340CSE

– IBM486 SLC2 25/50MHz, on

the system board

– IBM486 SLC2 33/66MHz, on

the system board

4MB (on the system board)

(12MB is maximum)

– 9.4-inch, 64 gray, level DSTN

LCD monochrome

 340CSE

– 9.4-inch, 256 color, DSTN

LCD color

– 10.4-inch, 256 color, DSTN

LCD color

3.5-inch (for U.S. and European countries)

 0.720MB, 1.2MB, 1.44MB

(3-mode), 3.5-inch (for Japan)

– 125MB, 2.5-inch

 340CSE

– 200MB, 2.5-inch – 360MB, 2.5-inch

48 IBM Mobile Systems HMM

FRU Removals and Replacements

This section contains information about removals and replacements.

 An electrostatic discharge (ESD) strap must be

used to establish personal grounding. The system

board is sensitive to, and can be damaged by, electrostatic discharge. Establish personal grounding by touching a ground point with one hand before touching these units.

 Do not damage any part. Only certificated and

trained personnel should service the computer.

 The arrows in the “Removals and Replacements”

section show the direction of movement to remove a FRU, or to turn a screw to release the FRU. The step number with the arrow shows the correct sequence of removal. The circled numbers are sub-steps of the main step.

 When other FRUs must be removed before removing

the failing FRU, they 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” for internal cable connections and arrangement information.

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

shown in the table of each section.

Safety Notice 8: Translation on page 13

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.

Safety Notice 3: Translation on page 9

The battery pack contains Cadmium. 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.

Safety Notice 1: Translation on page 7

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.

ThinkPad 340x (IBM 2610) 49

1010 Rear Connector Door

Remove the rear connector door by flexing it.

1020 Battery Pack

50 IBM Mobile Systems HMM

1030 Backup Battery 1040 IC DRAM Card 1050 Standby Battery

 Battery Pack (1020)

Step 2: Standby Battery Step 3: IC DRAM Card Step 4: Backup Battery

Note

The IC DRAM card is sensitive to physical shock. Incorrect handling of the card can damage it.

Note: When removing the backup battery or standby

battery, use the connector extractor (P/N 39G9977).

ThinkPad 340x (IBM 2610) 51

1060 Top Cover

 Battery Pack (1020)

Step Location (Quantity) Length

.1/ Base cover (3) 12 mm

Note: Make sure you use the correct screw.

52 IBM Mobile Systems HMM

1070 Indicator Card

 Battery Pack (1020)  Top Cover (1060)

When Replacing

Be careful to not break the pins of the indicator card connector.

ThinkPad 340x (IBM 2610) 53

1080 Keyboard Unit

 Battery Pack (1020)  Top Cover (1060)

Notes:

1. There are two keyboard latches on each side of the computer frame. Slide the keyboard as shown in step 2 to release the keyboard from those latches; them remove the keyboard. (Small arrows on the both sides of the keyboard show the locations of the latches.)

2. The keyboard has three cables; be careful not to damage the cables when you open the keyboard and to remove them.

When Replacing

 Check that the three keyboard cables are clean,

and inserted straight and fully into the connectors. Slide both ends of each connector latch at the same time to make sure that each cable is correctly inserted.

 Go to “Keyboard/Auxiliary Input Device Checkout”

on page 27 and test all keys before returning the computer to the customer.

54 IBM Mobile Systems HMM

1090 LCD Assembly

 Battery Pack (1020)  Top Cover (1060)

Safety Notice 5: Translation on page 11

Caring for the LCD

 When cleaning of the LCD becomes necessary,

gently wipe the LCD with a dry, soft cloth. Do not use alcohol or detergent to clean the LCD.

 To avoid damage to the LCD, do not scratch or

apply any force to its surface.

 Do not put anything on the surface of the LCD.  Do not pull the LCD cable. The cable can be

damaged if it is disconnected without releasing the latch.

340CSE

ThinkPad 340x (IBM 2610) 55

340

Use the following table for reference when replacing parts.

Step Location (Quantity) Length

.1/ LCD cable (1) 6 mm .3/ LCD hinge (4) 8 mm

Note: Make sure you use the correct screw.

56 IBM Mobile Systems HMM

1100 Diskette Drive 1110 Hard Disk Drive

 Battery Pack (1020)  Top Cover (1060)  Keyboard Unit (1080)

Steps 1, 2, 3, 4: Diskette Drive Steps 5, 6: Hard Disk Drive

When Replacing

 Before removing the hard disk drive, have the

user make a backup copy of all information on the hard disk

 Never remove the hard disk drive while the

system is operating or is in suspend mode.

 Do not pull the hard disk cable. The cable can

be damaged if it is disconnected without releasing the latch.

 Do not drop or apply any shock or extra force to

the hard disk drive or diskette drive. They are sensitive to physical shock.

Use the following table for reference when replacing parts.

Step Location (Quantity) Length

.1/ Diskette Drive (2) 8 mm .5/ Hard Disk Drive (2) 6 mm

Note: Make sure you use the correct screw.

ThinkPad 340x (IBM 2610) 57

1120 System Board/Speaker

 Rear Connector Door (1010)  Battery Pack (1020)  Backup Battery (1030)  IC DRAM Card (1040)  Standby Battery (1050)  Top Cover (1060)  Indicator Card (1070)  Keyboard Unit (1080)

 Diskette Drive (1100)

 Hard Disk Drive (1110)

Step 1, 2, 3, 4: System Board Step 4, 5: Speaker

Step Location (Quantity) Length

.1/ I/O connector (6) Hex-head

.2/ Base cover (1) 8 mm .3/ Base cover (2) 12 mm

Note: Make sure you use the correct screws.

58 IBM Mobile Systems HMM

screws

Locations System (Front View)

.1/ LCD .2/ Contrast Control .3/ Brightness Control .4/ Status Indicator .5/ Keyboard .6/ LCD and Keyboard Latch .7/ Click Button .8/ Diskette-Eject Button .9/ Diskette Drive

.1ð/ Fn Key .11/ TrackPoint II/III

ThinkPad 340x (IBM 2610) 59

System (Rear View)

.1/ External Display Connector .2/ Serial Connector .3/ PCMCIA Slot .4/ Serial Connector .5/ Reset Pushbutton .6/ Power Jack .7/ External Input Device connector

System (Interior View)

.1/ Backup Battery .2/ IC DRAM Card Slot .3/ Standby Battery .4/ Battery Pack

60 IBM Mobile Systems HMM

System Board

.1/ Internal Modem Card connector

(Modem model only)

.2/ External Display Connector .3/ Parallel Connector .4/ LCD connectors .5/ PCMCIA Slot .6/ Indicator Card Connector .7/ Reset Pushbutton .8/ LCD Inverter Power Connector (340CSE) .9/ Serial Connector

.1ð/ Power Jack .11/ External Input Device Connector .12/ Keyboard Signal Connector .13/ Hard Disk Drive Connector .14/ Speaker Connector (340CSE only) .15/ Keyboard TrackPoint II/III Connector .16/ Battery Pack Terminal .17/ POP Terminal .18/ Standby Battery Connector .19/ IC DRAM Card Connector .2ð/ Diskette Drive Interface .21/ Backup Battery Connector

3 4 5

6 7

1819

2021

Indicator Card

.1/ Resume/Suspend Switch .2/ Power Switch .3/ System board Interface

ThinkPad 340x (IBM 2610) 61

Parts Listing

3 4

62 IBM Mobile Systems HMM

System Unit Models 340 and 340CSE

Index 1 LCD Assembly (340) 84G6678 1 LCD Assembly (340CSE)

9.4-inch 85G7601

10.4-inch 85G7602

2 Top Cover (340) 84G6677 2 Top Cover (340CSE) 85G7600 3 Keyboard Assembly

(See keyboard list)

4 Modem/Fax Card (2400 bps.) 84G5917 5 Indicator Card 84G6662 6 System Board (340) 84G6661 6 System Board (25/50MHz)

With modem connector 85G7595 Without modem connector 85G7596

6 System Board (33/66MHz) 85G7598

Without modem connector

7 125MB Hard Disk Drive 84G6663

200MB Hard Disk Drive 85G7606 360MB Hard Disk Drive 85G7608

8 Rear Connector Cover 84G6676 9 Base Cover Assembly (340) 84G6656

For U.S. 84G6890 For Japan 84G6659 Base Cover Assembly (340CSE) 85G7612

For U.S., Japan 85G7611 Note: Base cover assembly includes coil spring, insulator, foot, power switch, knob, holder, latch buttons

10 Shield Case 84G6660 11 Battery Pack (Nickel Cadmium) 84G6672

For U.S. 84G6671 For Japan 84G6674

11 Battery Pack (Nickel Metal Hydride) 85G7604 12 Accessory Cover 84G6675 13 Standby Battery 84G6668

For U.S. 84G6667 For Japan 84G6670

14 Backup Battery 84G6666

Screw Kit (Includes the following) 84G6764

10-2.5 x 4 mm; 10-2.5 x 6 mm

10-2.5 x 8 mm, Flat head;

10-2.5 x 8 mm; 10-2.5 x 16 mm

10-hex stud I/O; 10-hex stud bus

2-washers for hex stud bus

ThinkPad 340x (IBM 2610) 63

DASD

Index 15 Diskette Drive (2-mode) 84G6664

Diskette Drive (3-mode) 84G6665

16 Speaker (360CSE) 85G7643 17 TrackPoint II Cap 66G6444 17 TrackPoint III Cap 84G6536

Shield Plate (340) AC Adapter For Japan AC Adapter (small, 35W) For Japan DC Plug IC DRAM Card (See options)

84G6774 84G6679 84G6738 85G4952 85G6669 85G6664

Keyboards

Arabic 84G6881 Belgium 84G6879 Canadian French 84G6887 Danish 84G6878 Dutch 84G6876 Finnish, Swedish 84G6875 French 84G6872 German (Black) 84G6870 Greek 84G6885 Hebrew 84G6882 Italian 84G6874 Japanese 84G6888 Latin Spanish 84G6886 Norwegian 84G6880 Portuguese 84G6883 Spanish 84G6877 Swiss, French 84G6873 Swiss, German 84G6871 Turkish 84G6884 U.K. English 84G6869 U.S. English 84G6868

64 IBM Mobile Systems HMM

Option Parts List

Notes:

1. When you replace the AC Adapter with a new one, use the one for the country you are in even if the system is from a different country.

2. The warranty for the system unit does not apply to all options.

Basic IC DRAM CARD (no parity) 8MB 84G5725 Basic IC DRAM CARD (no parity) 4MB 84G5724 Basic IC DRAM CARD (no parity) 16MB 84G5726 Keyboard/Mouse Cable 54G0444 Microphone 66G7871 PS/2 Miniature Mouse 95F5723

Numeric Keypad

Belgian 95F5741 Canadian French 95F5466 Danish 95F5467 Dutch 95F5467 French 95F6313 German 95F6314 Greek 95F5467 Hebrew 95F5741 Icelandic 95F5467 Italian 95F6316 Japanese 79F6401 Norwegian 95F5467 Spanish 95F6315 Swedish/Finnish 95F5468 Swiss/French 95F5711 Swiss/German 95F5715 Turkish 95F5467 U.K. English 95F5741 U.S. English 95F5741

Tools

Tri-Connector Wrap Plug 72X8546 PC Test Card 35G4703 Audio Wrap Cable 66G5180 Screwdriver Kit 95F3598

ThinkPad 340x (IBM 2610) 65

Warning: Use only the power cord certified for your country.

1 Colombia, U.S., Venezuela 13F9959 25H2207

Japan, 2-pin 6454377 85G6665 Japan, 3-pin 65F0031

2 Hong Kong, Singapore, U.K. 14F0033 25H2215 3 France, Germany, Spain 13F9979 25H2209 4 Italy 14F0069 25H2223 5 Australia, New Zealand 13F9940 25H2205 6 Denmark 13F9997 25H2211 7 Israel 14F0087 25H2225 8 Bangladesh, Pakistan, 14F0015 25H2213

Sri Lanka, South Africa

9 Switzerland 14F0051 25H2221 10 Thailand 1838574 25H2219 Note: The 30/40W cord is 6 feet long; the 35W cord is 6 inches.

30/40W 35W

66 IBM Mobile Systems HMM

ThinkPad 700, 700C, 720, 720C (9552)

General Checkout . . . . . . . . . . . . . . . . . 68

Memory Checkout . . . . . . . . . . . . . . . 70

Power Systems Checkout ........... 71

Power Management Features ......... 81

Symptom-to-FRU Index . . . . . . . . . . . . . . 82

Numeric Error Codes .............. 82

Beep Symptoms . . . . . . . . . . . . . . . . 88

Miscellaneous Symptoms . . . . . . . . . . . 89

Undetermined Problem . . . . . . . . . . . . . 93

Related Service Procedures ............ 94

System Status Indicators ............ 94

Check Point (CP) Codes ............ 96

System Error Log ............... 96

Checking the Installed Devices List ....... 97

Power-On Password (700, 700C) ........ 97

Power-On Password (720, 720C) ........ 97

Privileged-Access Password (PAP) ....... 97

Set Startup Sequence ............. 98

Restore System Partition ............ 98

Hard Disk Low Level Format .......... 99

Replacing the Hard Disk Drive ......... 99

System Diskettes (Reference and Diagnostic) . 100 Making a System Partition Backup Copy . . . 101 Japanese Model Diskette Drive and Diskette . 102

173 and 11350 Error Combination ...... 102

PCMCIA Card Removal Tip ......... 102

Product Overview . . . . . . . . . . . . . . . . 102

FRU Removals and Replacements ........ 104

Locations . . . . . . . . . . . . . . . . . . . . 110

Front View . . . . . . . . . . . . . . . . . 110

System Board (700) ............. 111

System Board (720, 720C) .......... 112

Video Card . . . . . . . . . . . . . . . . . 113

Keyboard Control Card ............ 113

Voltage Converter . . . . . . . . . . . . . . 114

Parts Listing (700) ............... 115

Parts Listing (720, 720C) ............ 118

FRU Service Procedures ........... 124

General Checkout

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

Warning: The drives might have been rearranged or the drive startup sequence might have been altered. Be extremely careful during write operations such as copying, saving, or formatting. Data or programs can be written over if you select an incorrect drive.

Japanese Models Only

The Japanese model of the ThinkPad 700C has an 89-key keyboard. This keyboard is identified by the additional keys at the left and right sides of the spacebar.

When testing the diskette drive in the Japanese model, the 1.2MB format (8 sectors per track and 15 sectors per track) in addition to the 720KB and

1.44MB formats are tested to ensure correct operation.

A 2.0MB capacity diskette is required when testing the

1.2MB format.

1. Power-off the computer and all external devices.

2. Check all cables and power cords for correct connection.

3. Make sure that no diskettes are in the drives.

4. Power-on all external devices.

5. Power-on the computer. If any error message appears on the screen, go to “Symptom-to-FRU Index” on page 82.

If no message appears on the screen, press Ctrl+Alt+Delete to continue. After the cursor moves to the upper right corner of the screen, press Ctrl+Alt+Insert to start the system program. If the IBM logo screen does not appear, insert the backup copy of the system partition into the diskette drive and start the system program again. Then press Ctrl+A, and run the system checkout. For information on how to disable the password, see “Power-On Password (700, 700C)” on page 97.

6. Refer to the following table. If you do not find your symptom listed, go to “Symptom-to-FRU Index” on page 82, then go to “Undetermined Problem” on page 93.

only

IBM

68 IBM Mobile Systems HMM

Symptom Go to ...

Error Code or Message “Symptom-to-FRU Index” on

Configuration Problem “Checking the Installed

Power Problem “Power Systems Checkout”

Memory Problem “Memory Checkout” on

TrackPoint II or Pointing Stick Problem

ThinkPad 700C, 720C Color LCD Problem

ThinkPad 700, 720 Mono Panel Problem

High Speed Modem Noise Problem

page 82

Devices List” on page 97

on page 71

page 70 “TrackPoint II Checkout” on

page 476 “LCD FRU Replacement

Notice” on page 124 “700, 720 Mono LCD FRU

Replacement” on page 124 “High-Speed Modem Noise

Problems” on page 124

Note

For information about how to run diagnostics, error messages, passwords, and various other tests and service checks, go to “Related Service Procedures” on page 94.

ThinkPad 700, 700C, 720, 720C (9552) 69

Memory Checkout

Customer diagnostics can eliminate defective memory so no memory error message appears at power-on reset. After you replace a defective base memory card or IC DRAM card, run Automatic configuration. Otherwise, the new memory will not be recognized. Power-off the computer before you remove or replace any parts.

001

– Remove all IC DRAM cards from their slots (if installed). – Power-off the computer, then power it on.

After the cursor moves to the upper right corner of the screen, press Ctrl+Alt+Insert to start the system program.

– Press Ctrl+A at the Main Menu.

DID THE ADVANCED DIAGNOSTIC MENU APPEAR? Yes No

002

Replace the base memory card. If the problem is not corrected, go to “Undetermined Problem” on page 93.

003

– Run the memory tests.

Use the RUN TESTS ONE TIME option.

DID THE MEMORY TESTS END WITHOUT AN ERROR? Yes No

004

Replace the base memory card.

005

– Install the IC DRAM card into slot 1 and run Automatic

configuration.

– Run the memory test.

Use the RUN TESTS ONE TIME option.

DID THE MEMORY TESTS END WITHOUT AN ERROR? Yes No

006

Replace the IC DRAM card in slot 1. If the problem is not corrected, replace the system board.

007

– Install the IC DRAM card into slot 2 and run Automatic

configuration.

(Step 007 continues)

70 IBM Mobile Systems HMM

007 (continued)

– Run the memory test.

Use the RUN TESTS ONE TIME option.

DID THE MEMORY TESTS END WITHOUT AN ERROR? Yes No

008

Replace the IC DRAM card in slot 2. If the problem is not corrected, replace the system board.

009

If the problem occurs intermittently, run the memory tests multiple times to create an error log.

Power Systems Checkout

Note: One or all of the batteries can discharge if there is

a short circuit in the system.

1. Replace the failing FRU if the power supply problem is caused by a short circuit.

2. Determine if one (or all) of the batteries have become discharged. Replace any discharged battery with its spare, if available.

The test procedures for each power supply are found on the following pages.

“Checking the AC Adapter” on page 72. “Checking the Car Battery Adapter (700 only)” on page 73. “Checking the Battery Pack” on page 74. “Checking the Backup Battery” on page 75 “Checking the Standby Battery” on page 75. “Checking the Quick Charger” on page 76. “Checking the Voltage Converter (700, 700C)” on page 77. “Checking the Voltage Converter (720, 720C)” on page 78.

ThinkPad 700, 700C, 720, 720C (9552) 71

Checking the AC Adapter: If the Power-On

indicator does not turn-on, check the power cord of the AC adapter for correct continuity and installation.

1. If any noise can be heard from the AC adapter when it is plugged into the ac power outlet, replace the AC adapter.

If no noise can be heard from the AC adapter, go to step 3.

2. If a noise is still heard from the new AC adapter, suspect the computer. Replace the AC adapter with the original one, then go to the next step. If no noise is heard from the new AC adapter, the original AC adapter is defective.

3. Unplug the AC adapter cable from the computer and measure the output voltage at the plug of the AC adapter cable. See the following figure.

Pin Voltage (V dc)

1 +19.0 to +21.0 2 Ground

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

4. Unplug the AC adapter cable from the ac power outlet and wait for a few minutes.

5. Plug the AC adapter cable into the ac power outlet.

6. Measure the output voltage of the AC adapter.

 If the voltage is still not correct, replace the AC

adapter.

 If the voltage is correct, plug the AC adapter

cable into the computer and try the failing operation again.

 If the problem goes away, suspect the continuity

or installation of the AC adapter cable.

 If the problem is not corrected, replace the

voltage converter.

72 IBM Mobile Systems HMM

Checking the Car Battery Adapter (700 only): If the output voltage from the cigarette lighter

socket of the car is less than 10.5 V dc, the power-on indicator on the car battery adapter blinks and a noise can be heard continuously.

1. Unplug the car battery adapter cable from the connector, if connected.

2. Plug the car battery adapter into the cigarette lighter socket.

Note: If the adapter is already plugged in, be sure to

unplug the adapter from the cigarette lighter socket, then plug it into the socket again.

3. Measure the output voltage of the car battery adapter cable. See the following figure.

Pin Voltage (V dc)

1 +19.0 to +21.0 2 Ground

 If the voltage is correct and the power-on

indicator on the car battery adapter is on all the time, the car battery is working correctly. Replace the voltage converter. If the problem is not resolved when the voltage converter is replaced, go to “Checking the Voltage Converter (700, 700C)” on page 77 or “Checking the Voltage Converter (720, 720C)” on page 78.

 If the voltage is outside the normal voltage

range, do one of the following:

– Try the above test procedures using a

different car, if one is available.

– Replace the car battery adapter if the

computer works with the AC adapter but does not work with the car battery adapter.

Note: If the output voltage from the cigarette lighter

socket of the car is less than 10.5 V dc, the power-on indicator on the car battery adapter blinks and a continuous noise can be heard. Have the car battery serviced.

ThinkPad 700, 700C, 720, 720C (9552) 73

Checking the Battery Pack

1. Carefully place the computer bottom-side up.

2. Remove the battery pack and measure the voltage between the battery terminals 1 (+) and 3 (−). See the following figure.

( )

Pin Voltage (V dc)

1 +10.0 to +18.0 2 Thermal Detection 3 Ground

 If the voltage is less than +10.0 V dc, the battery

pack has been discharged or is defective.

 If the voltage is more than +10.0 V dc, go to the

next step.

3. Using an ohm meter, measure the resistance between battery terminals 2 (T) and 3 (−). The resistance must be 4 to 30 kilohms.

 If the resistance is not correct, replace the

battery pack.

 If the resistance is correct, go to the next step.

4. Install the battery pack and plug the AC adapter cable into the computer to charge the battery pack.

 If the battery power status indicator is blinking

(orange) and battery charging indicator is on, replace the battery pack. If the battery is charging normally, the battery is OK.

74 IBM Mobile Systems HMM

Checking the Backup Battery

1. Carefully place the computer bottom-side up.

2. Remove the bottom cover.

3. Disconnect the battery connector from the system board.

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

(Black)

Wire Voltage (V dc)

Red +2.5 to +3.7 Black Ground

(Red)

 If the voltage is correct, replace the system board.  If the voltage is not correct, the backup battery has

been discharged by a short circuit or it is defective.

Checking the Standby Battery

Note: Make sure that the battery pack is removed

from the computer before the standby battery is removed.

1. Power-off the computer and unplug the AC adapter cable from the computer.

2. Remove the battery pack.

3. Remove the indicator cover.

4. Disconnect the standby battery connector from the voltage converter.

5. Plug the AC adapter cable into the computer and power-on the computer.

6. Measure the output voltage at the connector on the voltage converter. See the following figure.

ThinkPad 700, 700C, 720, 720C (9552) 75

Pin Voltage (V dc)

1 +4 2 Ground

 If the voltage is less than +4 V dc, replace the

voltage converter.

 If the voltage is more than +4 V dc, go to the

next step.

7. Power-off the computer and unplug the AC adapter cable from the computer.

8. Reconnect the standby battery to the voltage converter.

9. Plug the AC adapter cable into the computer and power-on the computer. Allow approximately 30 minutes for the standby battery to charge.

10. Power-off the computer and unplug the AC adapter cable from the computer and remove the standby battery.

11. Measure the voltage of the standby battery.

 If the voltage is less than 3.5 V dc, replace the

standby battery.

Checking the Quick Charger: If a humming or

buzzing sound is heard from the quick charger when it is operating, replace the quick charger. If the charger is operating at a normal quiet sound level, do the following.

1. Perform steps 1 through 3 of the “Checking the Battery Pack” to ensure the battery pack is operating correctly.

2. Connect the power cord to the quick charger and the other end to the ac power outlet. Ensure that the power-on indicator is on.

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

the power cord of the quick charger for correct continuity and installation.

76 IBM Mobile Systems HMM

 If the problem is not corrected, replace the quick

charger or the power cord.

3. Install the battery pack into the quick charger.  If the charging indicator does not start blinking,

replace the quick charger.

Checking the Voltage Converter (700, 700C): Use the following procedure to isolate a

problem with the ThinkPad 700, 700C voltage converter. Note: If the problem only occurs when using the

computer with a good battery pack, replace the voltage converter.

1. Power-off the computer.

2. Power-off all attached devices and disconnect them

from the computer.

3. Unplug the AC adapter cable and remove the battery

pack from the computer.

4. Carefully place the computer bottom-side up and

remove the bottom cover.

5. Plug the AC adapter cable into the computer.

6. Power-on the computer.

Important

Be careful not to actuate the suspend switch (located between the Esc key and the LCD) during the operation. When you turn the computer upside down with the LCD opened, put something under the computer to prevent accidentally actuating the suspend switch.

7. Check the voltages of the voltage converter on the

system board. See the following figure.

Signal V dc Min. V dc Max.

VA +4.75 +5.25 VG +4.75 +5.25 VB +4.75 +5.25 VC +3.42 +3.78 PWRGOOD +4.00 +5.25

ThinkPad 700, 700C, 720, 720C (9552) 77

GND

Password-Override Connecter

VC VB VG VA

PWRGOOD

Note: Only VOLT is marked on the system board.

Use the above figure to locate the VA, VG, VB, VC, and PWRGOOD signal names.

 If all voltages are correct, the voltage converter

is operating correctly.

 If the voltages are not correct, go to the next

step.

8. Power-off the computer and unplug the AC adapter cable from the computer.

9. Check for a short circuit between GND and VA, VG, VB, or VC.

 If there is a short circuit, replace the following

FRUs one at a time to correct the problem. – Voltage converter – System board

 If there is no short circuit, go to the next step.

10. Check the output voltage of the AC adapter cable (see “Checking the AC Adapter” on page 72).

 If the output voltage is correct, go to the next

step.

11. Replace the following FRUs one at a time.

– Voltage converter – System board

Checking the Voltage Converter (720, 720C): Use the following procedure to isolate a

problem with the ThinkPad 720, 720C voltage converter.

1. Power-off the computer.

2. Power-off all attached devices and disconnect them from the computer.

3. Unplug the AC adapter cable, then remove the battery pack from the computer.

4. Carefully place the computer bottom-side up and remove the bottom cover.

5. Plug the AC adapter cable into the computer.

78 IBM Mobile Systems HMM

6. Open the LCD half-way, then stand the computer on its front edges so that the suspend switch is not activated.

7. Power-on the computer.

8. Check the voltages of the voltage converter on the system board. See the following figure.

Notes:

a. Make sure the suspend switch (located to the left

above the keyboard) is not activated during measurement of the voltage.

b. Only PG is marked on the system board. Use

the following figure to locate the VA, VG, VB, VA3, and VB3 signal names.

Ground

VA3

VB3

Signal V dc Min. V dc Max.

VA +4.75 +5.25 VG +4.75 +5.25 VB +4.75 +5.25 VA3 +3.42 +3.78 VB3 +3.42 +3.78 PG +4.00 +5.25

 If any voltage is not correct, go to step 9.  If all voltages are correct, the voltage converter

is operating correctly. If the power problem did no reoccur, reconnect the devices removed in step 2 to isolate a device problem.

 If all the voltages are correct and the power

problem still exists, replace the following FRUs one by one. – System board – Processor card

9. Power-off the computer and unplug the AC adapter cable from the computer.

10. Check for a short circuit between Ground and VA, VG, VB, VA3 or VB3. The following table shows which FRUs can cause a short at each signal.

ThinkPad 700, 700C, 720, 720C (9552) 79

 If there is a short circuit (less than 10 ohms),

remove the FRUs indicated one at a time until the short circuit disappears. Replace the FRU causing the short circuit.

FRU VA VG VB VA3 VB3

Voltage converter x x x x Processor card x x System board x x x x x Video card x x x x Base memory card x Keyboard control card x x Math coprocessor x x Diskette drive x Hard disk drive x LCD x Indicator assembly x x

11. If there is no short circuit, replace the following FRUs one at a time.  Voltage converter  System board

80 IBM Mobile Systems HMM

Power Management Features

The suspend and resume functions are unique methods used to save battery power. In suspend mode, all tasks are suspended and their present states are stored in memory to save power. Also, the system enters a state where only a minimum amount of power is used.

When the computer returns to normal operation using the resume function, the computer restores the same states as when it entered suspend mode.

sleep

Full and Partial Suspend Modes:

might be referred as full-suspend mode, as compared to partial-suspend mode.

The computer enters partial-suspend mode when an application software program interferes with the power management capability of the computer and prevents it from entering full-suspend mode. The following sounds indicate suspend mode has occurred:

 One beep for full-suspend mode  Two beeps for partial-suspend mode

(No beep is heard if the is set to off in the Set Advanced Features program.)

The computer enters suspend mode when:

 The LCD is closed (the switch is located on the

voltage converter card).

 The specified time has elapsed from the last

operation with the keyboard, mouse, hard disk drive, parallel connector, diskette drive, and AC adapter is plugged in. The time is specified by

suspend

 When a battery-low condition exists, the battery

power indicator blinks (orange).

 The

Features program.

 The operating temperature is exceeded.

The system returns to normal operation when:

 The LCD is opened. 

PS2 ON HH:MM:SS

Advanced Features program before entering suspend mode.

 A “Ring indicator” signal on the communication

interface is detected.

 Either button of the pointing stick is pressed.

You can replace the battery pack during full-suspend mode. Never replace the battery pack during partial-suspend mode. If the battery pack is replaced during suspend mode with the LCD opened, close the LCD and open it again to return to normal operation.

in the Set Advanced Features program.

PS2 OFF

Power controller beep

command is set in the Set Advanced

command was set in the Set

Suspend mode

parameter

System

ThinkPad 700, 700C, 720, 720C (9552)

Symptom-to-FRU Index

The Symptom-to-FRU Index lists error symptoms and possible causes. The most likely cause is listed first. Always begin with “General Checkout” on page 68. This index also can be used to help you decide which FRUs to have available when servicing a computer.

If you cannot correct the problem using this index, go to “Undetermined Problem” on page 93.

IMPORTANT:

1. If you have both an error message and an incorrect audio response, diagnose the error message first.

2. If you cannot run the advanced diagnostic tests, but did receive a POST error message, diagnose the POST error message.

3. If you did not receive an error message, look for a description of your error symptoms in this index.

4. Check all power supply voltages before you replace the system board. See “Power Systems Checkout” on page 71.

5. If an error message is not listed, there is a device installed that requires an additional diskette or service manual. Refer to the diskette or service manual for that device.

How to Read POST Error Messages

POST error messages are displayed on the screen as 3, 4, 5, or 8 digits. The error messages that can be displayed as shorter POST messages are highlighted in this Symptom-to-FRU Index.

Note: Adjust the speaker volume before you power-on

the computer.

In the following error codes, an

can be any number.

Numeric Error Codes

Symptom/Error FRU/Action

00010200, 00010300, 00010400, 00010700

00010800 1. System Board

00011000 1. Go to “Memory

000113XX 1. System Board

82 IBM Mobile Systems HMM

1. System Board

2. Processor card

Checkout” on page 70 before replacing any FRUs.

2. Base Memory Card

3. IC DRAM Card

4. System Board

2. Processor Card

Symptom/Error FRU/Action

000118XX 1. Clear Error Log. See

00016100 1. See “Checking the

00016300, 00016400, 00016500, 00016900 (If 00016300 appears, set date and time first in the Reference Diskette.) (If setting configuration does not solve the problem, see “Checking the Installed Devices List” on page 97.)

000171XX, 000172XX 1. System Board 00017300

(700, 700C Only) Before replacing a FRU, restore the system partition with the Reference Diskette Version 1.1 or later. See “Installing a New Version of the System Diskettes” on page 100.

00017400 (If Automatic Configuration does not solve the problem, run Advanced Diagnostic.)

000175XX, 00017700 00017800

000179XX 1. Run System Unit and

000183XX 1. PAP (Privileged

000184XX, 00018500 1. System Board

“System Error Log” on page 96.

2. If the error remains, replace the FRUs in the following order:  Base Memory

Card

 IC DRAM Card

Note: Error Log must be cleared when a FRU is replaced.

Backup Battery” on page 75.

2. System Board

3. Voltage Converter

1. Set

Configuration/Features

2. System Board

3. Hard Disk Drive

4. Base Memory Card

5. IC DRAM Card

1. See “173 and 11350

Error Combination” on page 102 before replacing FRUs.

2. See “Checking the Backup Battery” on page 75.

3. Voltage Converter

1. Set

Configuration/Features

1. System Board

Memory Diagnostic.

- or -

2. Select More utilities to clear the system error log.

Access Password) is needed to boot from the System Program.

ThinkPad 700, 700C, 720, 720C (9552) 83

Symptom/Error FRU/Action

000187XX 1. Set Configuration

000188XX 1. System Board 000189XX 1. Select More utilities

00019000 1. Reseat System Board

00019102 1. Rerun diagnostics

000191XX (Not listed above)

00019200 1. Voltage Converter

00019201 1. Voltage Converter 00019202 1. Run System Unit

00019300, 00019301 00019305

00019302 1. Hard Disk Drive

00019303 1. System Board

00019304 1. PC Card

00019306 1. Keyboard Control

00019400 1. Processor Card 000199XX 1. System Board 0001XXXX

(not listed above) 000215XX

(720, 720C only)

2. System Board

to clear the system error log.

2. Reseat CPU chip / Processor Card

3. System Board

tests.

2. If error remains, see 000191XX.

1. Reseat System Board

2. Reseat CPU chip / Processor Card

3. System Board

2. Keyboard Control Card

3. System Board

Diagnostic.

If this error message appears frequently, replace the Processor Card.

1. System Board

2. System Board

2. Diskette Drive

2. System Board

Card

2. Keyboard

3. Pointing Device

1. System Board

2. Processor Card

1. Reseat Base Memory

Card (interface connector on system board).

84 IBM Mobile Systems HMM

Symptom/Error FRU/Action

0002XXXX (See “Memory Checkout” on page 70 before replacing any FRUs.)

00030100, 00030500 (Power-on the computer before external devices.) (See “1080 Keyboard Unit” on page 54 before replacing any FRUs.)

00030200, 00030300, 00030400 (See “1080 Keyboard Unit” on page 54 before replacing any FRUs.)

00030600 (See “1080 Keyboard Unit” on page 54 before replacing any FRUs.)

00030700 1. External Keyboard

0004XXXX 1. System Board

000601XX 1. Diskette Drive

000602XX 1. Defective Diskette 000628XX 1. Incorrect Diskette

000655XX, 000662XX 000670XX - 000675XX

0006XXXX (Unsupported drive or cable)

0007XXXX 1. Math Coprocessor

0011XX00 1. System Board

1. Base Memory Card

2. IC DRAM Card

3. System Board

1. Keyboard Control

Card

2. System Board

3. Keyboard

4. Numeric Keypad or Keyboard/Mouse Cable (if attached) or External Keyboard (if attached)

1. System Board

2. Keyboard Control Card

3. Keyboard

4. Numeric Keypad or Keyboard/Mouse Cable (if attached) or External Keyboard (if attached)

1. Keyboard

2. Numeric Keypad or Keyboard/Mouse Cable or External Keyboard (if attached)

3. Keyboard Control Card

4. System Board

2. Keyboard/Mouse Cable

2. Any Parallel Device

3. Communication Cable

2. System Board

3. Diskette Drive Cable

Media Type

2. Diskette Drive

3. System Board

4. Diskette Drive Cable

1. System Board

2. Diskette Drive

3. Diskette Drive Cable

1. Diskette Drive

2. System Board

3. Diskette Drive Cable

2. Processor Card

2. Any Serial Device

3. Communication Cable

ThinkPad 700, 700C, 720, 720C (9552) 85

Symptom/Error FRU/Action

0014XXXX 1. See “Printer

00180100, 00186100 Replace the line

0024XX00 1. Video Card

0039G900 1. System Board 005002XX, 005006XX,

005008XX, 005041XX

005004XX, 005010XX, 005030XX - 005032XX, 005051XX - 005062XX

005009XX, 005040XX 1. See “External Display

0080XXXX 1. System Board

0085XXXX 1. Do not replace any

00860100, 00860200 See “1080 Keyboard Unit” on page 54 before replacing any FRUs.

00860300, 00860400 00862300, 00862400 See “1080 Keyboard Unit” on page 54 before replacing any FRUs.

Checkout” on page 474 before replacing any FRUs.

2. Printer

3. System Board

QEMM386.SYS with QEMM386.SYS XBDA:L in Config.sys.

2. System Board

3. Voltage Converter (700C, 720C only)

1. See “External Display

Self-Test” on page 470 before replacing any FRUs.

2. Video Card

3. External Display

4. LCD

5. System Board

1. Video Card

2. System Board

3. LCD

Self-Test” on page 470 before replacing any FRUs.

2. External Display

3. Video Card

4. System Board

2. PCMCIA Card Slot

FRUs. The installed Memory Expansion Adapter is not supported by IBM.

1. Pointing Device

2. System Board

3. Numeric Keypad

1. System Board

2. Keyboard Control Card

3. Pointing Device

4. Keyboard (TrackPoint)

5. Numeric Keypad

86 IBM Mobile Systems HMM

Symptom/Error FRU/Action

00861100, 00861200 00861300 See “1080 Keyboard Unit” on page 54 before replacing any FRUs.

00861XXX (not listed above) See “1080 Keyboard Unit” on page 54 before replacing any FRUs.

00862100, 00862200 See “1080 Keyboard Unit” on page 54 before replacing any FRUs.

00862500, 00862600 See “1080 Keyboard Unit” on page 54 before replacing any FRUs.

0086XX00 See “1080 Keyboard Unit” on page 54 before replacing any FRUs.

010103XX - 010110XX, 010116XX - 010153XX, 010171XX

010436XX 1. System Board

0104XXXX 1. Hard Disk Drive

0129XXXX 1. Run System Board

0130XXXX 1. Indicator Assembly

1. Keyboard Control

Card

2. Keyboard (Pointing Stick)

3. System Board

4. Ext. Keyboard Cable

1. Keyboard (Pointing

Stick)

2. Keyboard Control Card

3. System Board

1. Keyboard Control

Card

2. System Board

3. Keyboard (TrackPoint)

1. Keyboard (Pointing

Stick)

2. Keyboard (TrackPoint)

3. Keyboard Control Card

1. Keyboard Control

Card

2. Keyboard

3. System Board

1. See “Fax/Modem

Checkout” on page 472.

2. Hard Disk Drive

2. System Board

diagnostics to clear the error log and retest

2. Select N to the question during the System Board diagnostics.

3. Power-on the system. If the error remains, replace the Processor Card.

4. Repeat steps 1 and 2.

5. If the problem remains, replace the system board.

2. System Board

3. Keyboard Control Card

4. Hard Disk Drive

5. Diskette Drive

6. Diskette Drive Cable

7. Speaker

ThinkPad 700, 700C, 720, 720C (9552) 87

Symptom/Error FRU/Action

0137XXXX 1. Serial Adapter

0194XXXX 1. Do not replace any

I99903XX, I99900XX I99800XX

I999XXXX Restore the system partition

2. System Board

3. Video Card

4. Any Serial Device

5. Communication Cable

FRUs. The installed Memory Expansion Adapter is not supported by IBM.

1. Reseat the hard disk

drive to ensure good connection.

2. See “Set Startup Sequence” on page 98.

3. Hard Disk Drive

4. System Board

from the Reference Diskette.

Beep Symptoms

Symptom/Error FRU/Action

Continuous beep. System Board Repeating short beeps. 1. See “1080 Keyboard

One long and one short beep.

One long and two short beeps.

One short beep and a blank, unreadable, illegible, or flashing display with no external display attached.

One short beep and a diskette prompt or a program load from the hard disk or unable to read the diskette. (Be sure an external display is not too close to the diskette drive.)

Two short beeps and a blank display.

Unit” on page 54 before replacing any FRUs.

2. Keyboard

3. Keyboard Control Card

4. System Board

1. System Board

1. Video Card

2. System Board

1. LCD

2. Video Card

3. System Board

4. Voltage Converter

1. Diskette Drive

2. System Board

3. Diskette Drive Cable

1. System Board

88 IBM Mobile Systems HMM

Symptom/Error FRU/Action

Two long beeps and two short beeps (or two long beeps and no short beeps). (Possibly with a blank screen and blinking speaker icon.)

1. Video Card

2. Incorrect system board (700, 700C)

3. Incorrect processor upgrade (700, 700C)

4. Incorrect 240MB hard disk drive upgrade for this model

Miscellaneous Symptoms

Symptom/Error FRU/Action

Power-on password is not reactivated.

Problem occurs only when port replicator installed.

No beep and a blank or unreadable display during POST.

No beep with a blinking cursor.

No beep with a normal display during POST.

No beep and the system hangs with CP XX at the right-bottom corner of the screen.

No beep and the system hangs after displaying the memory count.

No boot with blank screen. 1. System Board Extra horizontal or vertical

lines displayed on upper or lower half of the LCD.

1. Check the power-on

password switch position.

1. Port Replicator

1. See “Power Systems

Checkout” on page 71 before replacing any FRUs.

2. Processor Card

3. System Board

4. Video Card

5. Hard Disk Drive

6. Base Memory Card

7. Any option or device

8. Power source in use when failure occurs

9. Voltage Converter

10. Speaker

1. System Board

2. Processor Card

3. Any Option or Device

1. Speaker

2. System Board

3. Keyboard Control Card

4. Voltage Converter

1. System Board

2. Processor Card

1. System Board

2. Processor Card

3. Hard Disk Drive

4. Coprocessor

1. LCD

2. Video Card

3. System Board

ThinkPad 700, 700C, 720, 720C (9552) 89

Lenovo thinkpad 340X, thinkpad 700(C), thinkpad 720(C), thinkpad 701(C, CS) Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Portable Computer Descriptions

Drive and Diskette Compatibility Matrix

Important Service Information

How to Use Error Messages

How to Read POST Error Messages

Safety Information

General Safety

Electrical Safety

Safety Inspection Guide

Handling Electrostatic Discharge-Sensitive Devices

Grounding Requirements

Laser Compliance Statement

Screw Size Chart

ThinkPad 340x (IBM 2610)

General Checkout

Memory Checkout

System Board

TrackPoint II and III Checkout

Diskette Drive Test

Power Systems Checkout

Power Management Features

Symptom-to-FRU Index

Numeric Error Codes

FRU Codes

Beep Symptoms

No Beep Symptoms

LCD Related Symptoms

Keyboard/TrackPoint II or III Related Symptoms

Indicator Related Symptoms

Power Related Symptoms

Function/Audio Related Symptoms

Peripheral Device Related Symptoms

Other Symptoms

Intermittent Problems

Undetermined Problems

Related Service Procedures

Status Indicators

How to Run the Diagnostics

Error Log

Reset Pushbutton

Checking the Installed Devices List

How to Run the Low Level Format

PC Test Card LED

Fn Key Combinations

How To Run the Keyboard Diagnostics

Product Overview

FRU Removals and Replacements

1010 Rear Connector Door

1020 Battery Pack

1030 Backup Battery 1040 IC DRAM Card 1050 Standby Battery

Step 2: Standby Battery Step 3: IC DRAM Card Step 4: Backup Battery

1060 Top Cover

1070 Indicator Card

1080 Keyboard Unit

1090 LCD Assembly

1100 Diskette Drive 1110 Hard Disk Drive

Steps 1, 2, 3, 4: Diskette Drive Steps 5, 6: Hard Disk Drive

1120 System Board/Speaker

System Board

Indicator Card

Parts Listing

General Checkout

Memory Checkout

Power Systems Checkout

Power Management Features

Symptom-to-FRU Index

Numeric Error Codes

Beep Symptoms

Miscellaneous Symptoms