IBM thinkpad doo schematic

IBM Mobile Systems

Hardware Maintenance Manual Volume 1:Laptop, Notebook, Portable

and ThinkPad Computers

May 1995

S82G-1501-01

This Manual Supports:

Laptop L40SX Laptop CL57 Notebook N45SL Notebook N51XX Portable P70/P75 ThinkPad 300 ThinkPad 350 ThinkPad 500 ThinkPad 510 ThinkPad 710T Expansion Unit Dock Station I Dock Station II

(8543) (8554) (2614) (8551) (8573) (2615) (2618) (2603) (2604) (2523) (3550) (3545) (3546)

IBM Mobile Systems

Hardware Maintenance Manual Volume 1: Laptop, Notebook, Portable

and ThinkPad Computers

May 1995

S82G-1501-01

IBM

Note

Before using this information and the product it supports, be sure to read the general information under “Notices” on page 489.

Second Edition (May 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.

It is possible that this publication may contain reference to, or information about, IBM products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that IBM intends to announce such IBM products, programming, or services in your country.

Requests for technical information about IBM products should be made to your IBM authorized 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 - Volume 1

About This Manual

This manual contains service and reference information for IBM* Laptop, Notebook, Portable, and 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 contains

information for testing optional attachable devices common to the products in this manual.

 The Common Parts Listing section contains parts

listings for parts and tools common to the products in this manual.

 The Miscellaneous section contains acronyms,

abbreviations, terms, and a telephone number listing.

Important

This manual is intended for trained servicers who are familiar with IBM mobile 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 publications are available for IBM mobile products. For more information, contact IBM or your IBM Authorized Dealer.

Publication Part, Form Number

Mobile Systems HMM Volume 2: Thinkpad Computers

Model L40 SX (8543) HMR 15F2267, S15F2267 Model L40 SX (8543) HMS 15F2266, S15F2266 Model N45SL (2614) HMR 42G0485, S42G0485 Model N45SL (2614) HMS 42G0486, S42G0486 Model N51 SX/SLC (8551) HMR 04G5111, S04G5111 Model N51 SX/SLC (8551) HMS 04G5112, S04G5112 Model CL57 SX (8554) HMR 10G4419, S10G4419 Model CL57 SX (8554) HMS 10G4420, S10G4420 Model P70 386 (8573) HMR 64F3994, S64F3994 Model P70 386 (8573) HMS 15F2198, S15F2198 Model P75 486 (8573) HMR 84F8525, S84F8525 Model P75 486 (8573) HMS 84F7593, S84F7593 ThinkPad 350/350C (2618),

PS/Note 425/425C HMS Expansion Unit (3550-001) HMR 42G2335, S42G2335 Expansion Unit (3550-001) HMS 42G2336, S42G2336 Expansion Unit (3550-002) HMR 42G2331, S42G2331 Expansion Unit (3550-002) HMS 42G2332, S42G2332 PS/2 FaxConcentrator/A HMR

Supplement PS/2 FaxConcentrator/A HMS

Supplement PS/2 Comm. Cartridge I HMR 10G5992, S10G5992 PS/2 Comm. Cartridge I HMS 10G5993, S10G5993 PS/2 Comm. Cartridge II HML

(N51SX) PS/2 Comm. Cartridge II HML

(CL57SX) PS/2 Data/Fax Modem HML 04G5110, S04G5110 IBM High Speed Internal,

PCMCIA Data/Fax Modems

30H2357, S82G-1502-03

A211000, GA211000

15F2662, S15F2662

84F8541, S84F8541

04G5109, S04G5109

10G4421, S10G4421

61G1556, S61G1556

iv IBM Mobile Systems HMM - Volume 1

Obsolete Publications

This manual obsoletes the following publication:

Publication Part, Form Number

IBM Laptop, Notebook, and Portable Computers Vol. 1

82G1501, S82G1501

Related Diskettes

The following diskettes are available for IBM mobile products. For more information, contact IBM or your IBM Authorized Dealer.

Diskette Part, Form Number

Model L40 SX (8543) Reference Diskette

Model N45SL (2614) Advanced Diagnostics

Model N51 SX/SLC (8551) Reference and Diagnostic Package

Model CL57 SX (8554) Reference Diskette

Model P70 386 (8573) Reference Diskette

Model P75 486 (8573) Reference Diskette

ThinkPad Hardware Maintenance Diskette

10G5991, S10G5991

42G0495, S42G0495

04G5117, S04G5117

10G4422, S10G4422

84F8535, S84F8535

A380102, SA380102

82G3891, S82G3891

Trademark of the IBM Corporation.

vi IBM Mobile Systems HMM - Volume 1

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

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

Important Service Information ........... 4

Drive and Diskette Compatibility Matrix ....... 6

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

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

Screw Size Chart ................. 19

Model L40 SX (8543) ............... 23

General Checkout . . . . . . . . . . . . . . . . . 24

Symptom-to-FRU Index . . . . . . . . . . . . . . 32

Related Service Procedures ............ 37

Product Overview . . . . . . . . . . . . . . . . . 38

FRU Removals and Replacements ......... 39

Locations . . . . . . . . . . . . . . . . . . . . . 42

Parts Listing . . . . . . . . . . . . . . . . . . . 43

Model N45SL (2614) ............... 47

General Checkout . . . . . . . . . . . . . . . . . 48

Symptom-to-FRU Index . . . . . . . . . . . . . . 53

Related Service Procedures ............ 63

Product Overview . . . . . . . . . . . . . . . . . 66

FRU Removals and Replacements ......... 67

Locations . . . . . . . . . . . . . . . . . . . . . 70

Parts Listing . . . . . . . . . . . . . . . . . . . 71

Model N51 (8551) ................ 73

General Checkout . . . . . . . . . . . . . . . . . 74

Symptom-to-FRU Index . . . . . . . . . . . . . . 87

Related Service Procedures ............ 95

Product Overview (N51 SX) ............ 98

Product Overview (N51 SLC) ........... 98

FRU Removals and Replacements ......... 99

Locations . . . . . . . . . . . . . . . . . . . . 103

Parts Listing . . . . . . . . . . . . . . . . . . 105

Model CL57 (8554) ............... 111

General Checkout . . . . . . . . . . . . . . . . 112

Symptom-to-FRU Index . . . . . . . . . . . . . 122

Related Service Procedures ........... 131

Product Overview . . . . . . . . . . . . . . . . 134

FRU Removals and Replacements ........ 135

Locations . . . . . . . . . . . . . . . . . . . . 140

Parts Listing . . . . . . . . . . . . . . . . . . 141

Model P70 and P75 (8573) ........... 145

General Checkout . . . . . . . . . . . . . . . . 146

Symptom-to-FRU Index . . . . . . . . . . . . . 151

Related Service Procedures ........... 157

Product Overview (P70) . . . . . . . . . . . . 160

Product Overview (P75) . . . . . . . . . . . . 160

 Copyright IBM Corp. 1995 vii

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

Locations . . . . . . . . . . . . . . . . . . . . 170

Parts Listing (P70) ............... 172

Parts Listing (P75) ............... 178

ThinkPad 300 (2615) .............. 183

General Checkout . . . . . . . . . . . . . . . . 184

Symptom-to-FRU Index . . . . . . . . . . . . . 185

Related Service Procedures ........... 193

Product Overview . . . . . . . . . . . . . . . . 196

FRU Removals and Replacements ........ 197

Locations . . . . . . . . . . . . . . . . . . . . 200

Parts Listing . . . . . . . . . . . . . . . . . . 201

ThinkPad 350, PS/Note 425 (2618) ....... 205

General Checkout . . . . . . . . . . . . . . . . 206

Symptom-to-FRU Index . . . . . . . . . . . . . 211

Related Service Procedures ........... 215

Product Overview . . . . . . . . . . . . . . . . 220

FRU Removals and Replacements ........ 221

Locations . . . . . . . . . . . . . . . . . . . . 225

Parts Listing . . . . . . . . . . . . . . . . . . 226

ThinkPad 500 (2603) .............. 231

General Checkout . . . . . . . . . . . . . . . . 232

Symptom-to-FRU Index . . . . . . . . . . . . . 237

Related Service Procedures ........... 240

Product Overview . . . . . . . . . . . . . . . . 247

FRU Removals and Replacements ........ 248

Locations . . . . . . . . . . . . . . . . . . . . 251

Parts Listing . . . . . . . . . . . . . . . . . . 253

ThinkPad 510 (2604) .............. 257

General Checkout . . . . . . . . . . . . . . . . 258

Symptom-to-FRU Index . . . . . . . . . . . . . 264

Related Service Procedures ........... 268

Product Overview . . . . . . . . . . . . . . . . 275

FRU Removals and Replacements ........ 276

Locations . . . . . . . . . . . . . . . . . . . . 280

Parts Listing . . . . . . . . . . . . . . . . . . 282

ThinkPad 710T (2523) ............. 285

General Checkout . . . . . . . . . . . . . . . . 286

Symptom-to-FRU Index . . . . . . . . . . . . . 296

Related Service Procedures ........... 302

Product Overview . . . . . . . . . . . . . . . . 302

FRU Removals and Replacements ........ 304

Locations . . . . . . . . . . . . . . . . . . . . 307

Parts Listing . . . . . . . . . . . . . . . . . . 310

Expansion Unit (3550) ............. 315

General Checkout (3550-001) .......... 316

General Checkout (3550-002) .......... 322

Symptom-to-FRU Index . . . . . . . . . . . . . 329

viii IBM Mobile Systems HMM - Volume 1

Related Service Procedures ........... 334

Locations . . . . . . . . . . . . . . . . . . . . 336

Parts Listing . . . . . . . . . . . . . . . . . . 337

Dock I (3545) ................. 339

General Preparation . . . . . . . . . . . . . . . 340

General Checkout . . . . . . . . . . . . . . . . 341

Symptom-to-FRU Index . . . . . . . . . . . . . 351

Related Service Procedures ........... 358

Product Overview . . . . . . . . . . . . . . . . 366

FRU Removals and Replacements ........ 367

Locations . . . . . . . . . . . . . . . . . . . . 380

Parts Listing . . . . . . . . . . . . . . . . . . 386

Dock II (3546) ................. 389

General Checkout . . . . . . . . . . . . . . . . 390

Symptom-to-FRU Index . . . . . . . . . . . . . 416

Product Overview . . . . . . . . . . . . . . . . 422

Specifications . . . . . . . . . . . . . . . . . . 427

FRU Removals and Replacements ........ 428

Locations . . . . . . . . . . . . . . . . . . . . 450

Parts Listing . . . . . . . . . . . . . . . . . . 458

Common Devices Checkout .......... 463

External Diskette Drive Test ........... 464

External Display Self-Test ............ 464

External Keyboard/Auxiliary Input Device Checkout 465

Fax/Modem Checkout . . . . . . . . . . . . . . 466

Printer Checkout . . . . . . . . . . . . . . . . 468

Port Replicator Checkout ............ 469

TrackPoint II Checkout ............. 470

TV Tuner . . . . . . . . . . . . . . . . . . . . 471

Common Parts Listing ............. 477

Miscellaneous Information . . . . . . . . . . . 483

Acronyms, Abbreviations and Terms ....... 483

Problem Determination Tips ........... 485

Phone Numbers, U.S. and Canada ........ 486

Notices . . . . . . . . . . . . . . . . . . . . . 489

Contents

x IBM Mobile Systems HMM - Volume 1

Introduction

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

Important Service Information ........... 4

FRU Replacement Strategy .......... 4

Hard Disk Drive Replacement Strategy ..... 5

How to Use Error Messages .......... 5

How to Read POST Error Messages ...... 5

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

Screw Size Chart ................. 19

 Copyright IBM Corp. 1995 1

Portable Computer Descriptions

All models in the following table have VGA video. Models N51, CL57, 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 486SLC2-50/25 4M/12M 80M

ThinkPad 510 2604 486BLC2-50/25 4M/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 486SLC2-50/25 4M/12M 170M

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

T Tablet TPF ThinkPad File

Trademark of the IBM Corporation.

2 IBM Mobile Systems HMM - Volume 1

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

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 might 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) might exist on the computer you are servicing. Running Automatic Configuration might 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.

4 IBM Mobile Systems HMM - Volume 1

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

┌────┬────┬────┬────┐

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

│ │ │ │ │ │ │ │

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)

Introduction

Drive and Diskette Compatibility Matrix

The following table provides identification information for diskettes and diskette 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.

6IBM Mobile Systems HMM - Volume 1

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 apres remplacement d'une unite en clientele, verifiez que tous les ressorts, vis et autres pieces sont bien en place et bien fixes. Pour ce faire, secouez l'unite et assurez-vous qu'aucun bruit suspect ne se produit. Des pieces metalliques ou des copeaux de metal pourraient causer un court-circuit.

Bevor nach einem FRU-Austausch der Computer wieder angeschlossen wird, muB sichergestellt werden, daB keine Schrauben, Federn oder andere Kleinteile fehlen oder im Gehause vergessen wurden. Der Computer muß geschuttelt und auf Klappergerausche gepruft werden. Metallteile oder-splitter konnen Kurzschlusse erzeugen.

Prima di accendere l'elaboratore dopo che 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 scosse elettriche.

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. Compruebelo agitando el sistema y escuchando los posibles ruidos que provocarían. Las piezas metálicas pueden causar cortocircuitos electricos.

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 when replacing the RTC or backup battery. 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 demontez 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 reglementation en vigueur. Lorsque vous remplacez la pile de sauvegarde ou celle de l'horloge temps reel, veillez à n'utiliser que les modèles cites dans la liste de pieces detachees adequate. Une batterie ou une pile inappropriee risque de prendre feu ou d'exploser.

Einige Hilfsbatterien enthalten geringe Mengen Nickel und Cadmium. Sie durfen nicht zerlegt, wiederaufgeladen, Feuer oder Wasser ausgesetzt, oder kurzgeschlossen werden. Die Batterien mussen vorschriftsmaBig entsorgt werden. Beim Ersetzen von RTC oder der Sicherungsbatterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgefuhrt ist. Der Einsatz falscher Batterien kann zu Entzundung oder Explosion fuhren.

Alcune batterie di riserva contengono una piccola quantità di nichel e cadmio. Non smontarle, ricaricarle, gettarle nel fuoco o nell'acqua n 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 niquel y cadmio. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Desechelas tal como dispone la normativa local. Utilice sólo baterías que se encuentren en la lista de piezas para sustituir la batería de reserva o RTC. La utilización de una batería no apropiada puede provocar la ignición o explosión de la misma.

8 IBM Mobile Systems HMM - Volume 1

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 demontez 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 reglementation en vigueur. Lorsque vous remplacez la batterie, veillez à n'utiliser que les modeles cites dans la liste de pieces detachees adequate. En effet, une batterie inappropriee risque de prendre feu ou d'exploser.

Auch Akkus enthalten geringe Mengen von Nickel. Sie durfen nicht zerlegt, wiederaufgeladen, Feuer oder Wasser ausgesetzt, oder kurzgeschlossen werden. Die Batterien mussen vorschriftsmaBig entsorgt werden. Beim Ersetzen von RTC oder der Sicherungsbatterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgefuhrt ist. Der Einsatz falscher Batterien kann zu Entzundung oder Explosion fuhren.

La batteria contiene piccole quantità di nichel. Non smontarla, gettarla nel fuoco o nell'acqua nè 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 niquel. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Desechelas 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 degrees C (212 degrees F), incinerate it, or expose its cell contents to water. Dispose of the battery as required by local ordinances or regulations. Use of an incorrect battery can result in ignition or explosion of the battery. Replacement batteries can be ordered from IBM or IBM Authorized Dealers.

La pile de sauvegarde contient du lithium. Elle presente des risques d'incendie, d'explosion ou de brûlures graves. Ne la rechargez pas, ne retirez pas son connecteur polarise et ne la demontez pas. Ne l'exposez pas à une temperature superieure à 100ØC, ne la faites pas brûler et n'en exposez pas le contenu à l'eau. Mettez la pile au rebut conformement à la reglementation en vigueur. Une pile inappropriee risque de prendre feu ou d'exploser. Les piles de rechange peuvent etre obtenues aupres d'IBM ou d'un distributeur agree IBM.

Die Sicherungsbatterie ist eine Lithiumbatterie. Sie kann sich entzunden, explodieren oder schwere Verbrennungen hervorrufen. Batterien dieses Typs durfen nicht aufgeladen, zerlegt, uber 100 C erhitzt, verbrannt, deren Polkappen abgenommen oder deren Inhalt mit Wasser in Verbindung gebracht werden. Die Batterien mussen vorschriftsmaBig entsorgt werden. Der Einsatz falscher Batterien kann zu Entzundung oder Explosion fuhren. Austauschbatterien können bei IBM oder IBM Vertragspartnern bestellt werden.

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. Le batterie possono essere ordinate ai rivenditori autorizzati IBM o all'IBM.

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 100oC (212oF), ni la incinere ni exponga el contenido de sus celdas al agua. Desechela tal como dispone la normativa local.

10 IBM Mobile Systems HMM - Volume 1

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 medecin si des symptomes persistent apres le lavage.

Wenn die LCD-Anzeige zerbrechen sollte und die darin enthaltene Flussigkeit mit Augen oder Handen in Beruhrung kommt, sofort mindestens 15 Minuten lang die betroffenen Korperstellen mit Wasser abwaschen. Sollten danach noch durch die LCD-Flussigkeit hervorgerufene Symptome auftreten sollte ein Arzt aufgesucht werden.

In 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 minimo. Obtenga atención medica si se presenta algún sintoma del fluido despues de lavarse.

Safety Notice 6

To avoid shock, do not remove the plastic cover that surrounds the lower portion of the inverter card.

Afin d'viter tout risque de choc lectrique, ne retirez pas le cache en plastique prot geant la partie inf rieure de la carte d'alimentation.

Aus Sicherheitsgr nden 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 pl stico que rodea la parte baja de la tarjeta invertida.

Introduction 11

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 eleve, le court-circuit ou la mise à la masse d'une batterie peut produire suffisamment de courant pour brûler des materiaux combustibles ou causer des brûlures corporelles graves.

Obwohl Hauptbatterien eine niedrige Spannung haben, konnen sie doch bei KurzschluB oder Erdung genug Strom erzeugen, um brennbare Materialien zu entzunden 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 mate- rial combustible o provocar quemaduras en el personal.

12 IBM Mobile Systems HMM - Volume 1

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 unite remplacable en clientele, mettez le systeme hors tension, debranchez tous les cordons d'alimentation des socles de prise de courant, retirez la batterie et deconnectez tous les cordons d'interface.

Die Stromzufuhr muB 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 electrica, 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: A metal object is a conductor of

electricity.

 Wear safety glasses when you are:

– Hammering – Drilling – Soldering – Cutting wire – Attaching springs – Using solvents

– Working in any other conditions that might be

hazardous to your eyes

Do not attempt to lift any

14 IBM Mobile Systems HMM - Volume 1

 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.

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 might 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.

exposed

Introduction

– 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.

 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:

16 IBM Mobile Systems HMM - Volume 1

 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

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 computer. You can use coax or connector-outside shells on these computers.

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

AC-operated computers.

Grounding Requirements

Electrical grounding of the PS/2 computer is required for operator safety and correct computer function. Proper grounding of the electrical outlet can be verified by a certified electrician.

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