IBM ThinPad 240X service manual.pdf

IBM Mobile Systems

S19K-5649-00

ThinkPad 240X (2609)

Hardware Maintenance

Manual

May 2000

Before using this information and the product it supports,

be sure to read the general information under “Read This

First” on page 19.

Fourth Edition (May 2000)

The following paragraph does not apply to the United

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ernment Users — Documentation related to restricted

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About This Manual

This manual contains service and reference information for

IBM ThinkPad 570Z (2644) and ThinkPad Ultrabase pro-

ducts. Use this manual along with the advanced diag-

nostic tests to troubleshoot problems effectively.

The manual is divided into sections as follows:

The Introduction section provides general information,

guidelines, and safety information required to service

computers.

The product-specific section includes service, refer-

ence, and product-specific parts information.

Important

This manual is intended for trained servicers who are

familiar with ThinkPad products. Use this manual

along with the advanced diagnostic tests to trouble-

shoot problems effectively.

Before servicing an IBM ThinkPad product, be sure to

review the safety information under “Safety Notices

(Multi-lingual Translations)” on page 4 and “Safety

Information” on page 11.

iii

iv ThinkPad 240X

Contents

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

Important Service Information ........... 1

How to Use Error Messages .......... 2

How to Read POST Error Messages ...... 2

Drive and Diskette Compatibility Matrix ....... 3

Safety Notices (Multi-lingual Translations) ..... 4

Safety Information . . . . . . . . . . . . . . . . 11

General Safety . . . . . . . . . . . . . . . . 11

Electrical Safety . . . . . . . . . . . . . . . . 12

Safety Inspection Guide ............ 13

Handling Electrostatic Discharge-Sensitive Devices 15

Grounding Requirements . . . . . . . . . . . . 15

Laser compliance statement ............ 16

General Description . . . . . . . . . . . . . . . 19

Read This First .................. 19

What to Do First ................ 20

How to Disable the Password ......... 21

Product Overview . . . . . . . . . . . . . . . . . 22

Fn Key Combinations ............. 22

Status Indicators . . . . . . . . . . . . . . . . 23

Checkout Guide . . . . . . . . . . . . . . . . . 25

Audio Checkout . . . . . . . . . . . . . . . . 25

Fan ASM Checkout .............. 26

Keyboard and Auxiliary Input Device Checkout . 26

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

Modem Board Checkout ............ 27

Power System Checkout ............ 27

TrackPoint Checkout . . . . . . . . . . . . . . 29

I/O Ports Checkout .............. 30

Power Management Features ......... 30

Symptom-to-FRU Index . . . . . . . . . . . . . . 33

Numeric Error Codes .............. 33

Error Messages . . . . . . . . . . . . . . . . 35

No Beep Symptoms .............. 35

LCD-Related Symptoms . . . . . . . . . . . . 36

Keyboard-Related Symptoms . . . . . . . . . . 36

Indicator-Related Symptoms . . . . . . . . . . 36

Power-Related Symptoms . . . . . . . . . . . 37

PC Card (PCMCIA)-Related Symptoms ..... 37

Speaker-Related Symptoms . . . . . . . . . . 37

Power Management-Related Symptoms ..... 37

Peripheral-Device-Related Symptom . . . . . . 38

Intermittent Problems . . . . . . . . . . . . . 38

Undetermined Problems . . . . . . . . . . . . 39

CE Utility Program Diskette ............ 40

Writing the VPD Data ............. 40

Flash UUID . . . . . . . . . . . . . . . . . . 40

Running the Diagnostics .............. 40

FRU Removals and Replacements ......... 41

Contents v

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