IBM ThinkPad R50/R50p, R51 Series and ThinkPad Dock II Hardware Maintenance Manual

IBM

IBM Mobile Systems

ThinkPad Computer

Hardware Maintenance Manual

November 2004

This manual supports:

ThinkPad R50/R50p, R51 series (MT 1829, 1830, 1831, 1832, 1833, 1836, 1840, 1841, 2883, 2887, 2888, 2889, 2894, 2895)

ThinkPad Dock II (MT 2877)

Note

Before using this information and the product it supports, be sure to read the general information under “Notices” on page 272.

Second Edition (November 2004)

The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with local law:

INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION "AS IS" WITHOUT ANY WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE LIMITED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer or express or implied warranties in certain transactions; therefore, this statement may not apply to you.

This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements or changes to the products or the programs described in this publication at any time.

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

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

© Copyright International Business Machines Corporation 2004. All rights reserved.

US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.

Contents

About this manual 1
Introduction 3
Important service information 3
Strategy for replacing FRUs 3
How to use error messages 4
Diskette compatibility matrix 4
Safety notices: multilingual translations 4
Safety information 16
General safety 16
Electrical safety 17
Safety inspection guide 19
Handling devices that are sensitive to electrostatic discharge 20
Grounding requirements 21
Laser compliance statement 22
General descriptions 25
Read this first 25
What to do first 25
Related service information 27
Service web site 27
Restoring the pre-installed system 27
Passwords 28
Power management 32
Checkout guide 34
Testing the computer 34
Detecting system information with PC-Doctor 37
Power system checkout 37
ThinkPad R50/R50p and R51 Series 41
Product overview 43
Specifications 43
Status indicators 48
FRU tests 50
Fn key combinations 52
Symptom-to-FRU index 54
Numeric error codes 54
Error messages 59
Beep symptoms 60
No-beep symptoms 60
LCD-related symptoms 61
Intermittent problems 62
Undetermined problems 62
FRU replacement notices 63
Screw notices 63
Retaining serial numbers 64
Removing and replacing a FRU 67
1010 Battery pack 68
1020 Ultrabay Enhanced device 69

1030 Hard disk drive . . . .

About this manual

This manual contains service and reference information for IBM ThinkPad R50/R50p and R51 series (MT1829, 1830, 1831, 1832, 1833, 1836, 1840, 1841, 2883, 2887, 2888, 2889, 2894, 2895), and ThinkPad Dock II (MT2877) products. Use this manual along with the advanced diagnostic tests to troubleshoot problems.

The manual is divided into sections as follows:

• The common sections provide general information, guidelines, and safety information required in servicing computers.

The product-specific section includes service, reference, and product-specific parts information.

Important

This manual is intended for trained service personnel who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.

Before servicing an IBM ThinkPad product, be sure to review the safety information under “Safety notices: multilingual translations” on page 4, “Safety information” on page 16, and “Laser compliance statement” on page 22.

Introduction

Important service information

Strategy for replacing FRUs

Before replacing parts

Make sure that all diskette fixes are installed before replacing any FRUs listed in this manual.

Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:

• If you are instructed to replace a FRU but the replacement 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 replacing one of them does not correct the problem, reinstall that board, and then replace the other one.

• If an adapter or a device consists of more than one FRU, any of the FRUs may be the cause of the error. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the FRU that changed the symptoms.

Attention: The setup configuration on the computer you are servicing may have been customized. Running Automatic Configuration may alter the settings. Note the current configuration settings (using the View Configuration option); then, when service has been completed, verify that those settings remain in effect.

Strategy for replacing a hard disk drive

Always try to