IBM ThinkPad 340 Series User Manual

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

IBM ThinkPad 340 Series Specifications

General

Brand	IBM
Model	ThinkPad 340 Series
Category	Laptop
Language	English

Summary

Introduction

Portable Computer Descriptions

Provides descriptions of various portable computer models.

Important Service Information

Covers crucial information and strategies for servicing IBM products.

Safety Notices (Multi-lingual Translations)

Presents safety notices in multiple languages for user safety.

Safety Information

Outlines general safety rules and precautions for servicing IBM mobile computers.

Laser Compliance Statement

Details compliance information for laser products, specifically CD-ROM drives.

Screw Size Chart

Provides a chart to match screw sizes and shapes used in computer servicing.

ThinkPad 340x (IBM 2610)

General Checkout

Provides a procedure for diagnosing computer problems and identifying next steps.

Memory Checkout

Details steps for isolating memory-related problems in the computer.

Power Systems Checkout

Describes how to verify symptoms by testing various computer power sources.

Symptom-to-FRU Index

Lists symptoms, errors, and possible causes to help identify FRUs for servicing.

FRU Removals and Replacements

Contains information about FRU removals and replacements, including ESD precautions.

Locations

Illustrates the locations of various system components and connectors.

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

General Checkout

Provides a procedure for diagnosing computer problems and identifying next steps.

Memory Checkout

Details steps for isolating memory-related problems in the computer.

Power Systems Checkout

Describes how to verify symptoms by testing various computer power sources.

Power Management Features

Explains the power management modes for saving power and prolonging battery life.

Symptom-to-FRU Index

Lists symptoms, errors, and possible causes to help identify FRUs for servicing.

FRU Removals and Replacements

Contains information about FRU removals and replacements, including ESD precautions.

Locations

Illustrates the locations of various system components and connectors.

ThinkPad 701C/701CS (2630)

Checkout Guide

Provides a guide for diagnosing computer problems and determining the correct troubleshooting steps.

General Checkout

Details procedures for performing a general checkout of computer problems.

Memory Checkout

Describes how to isolate memory problems and check memory card installation.

Power Systems Checkout

Outlines procedures for verifying symptoms by testing various computer power sources.

Symptom-to-FRU Index

Lists symptoms, errors, and possible causes to help identify FRUs for servicing.

FRU Removals and Replacements

Contains information about FRU removals and replacements, including ESD precautions.

Locations

Illustrates the locations of various system components and connectors.

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

Read This First

Provides essential service information and precautions before beginning maintenance.

General Checkout

Outlines the procedure for performing a general checkout of computer problems.

Memory Checkout

Details steps for isolating memory-related problems and checking memory card installation.

Power Systems Checkout

Describes how to verify symptoms by testing various computer power sources.

Symptom-to-FRU Index

Lists symptoms, errors, and possible causes to help identify FRUs for servicing.

FRU Removals and Replacements

Contains information about FRU removals and replacements, including ESD precautions.

Locations

Illustrates the locations of various system components and connectors.

ThinkPad 755CD, 755CDV (9545)

General Checkout

Provides a procedure for diagnosing computer problems and identifying next steps.

Memory Checkout

Details steps for isolating memory-related problems and checking memory card installation.

Power Systems Checkout

Describes how to verify symptoms by testing various computer power sources.

Symptom-to-FRU Index

Lists symptoms, errors, and possible causes to help identify FRUs for servicing.

FRU Removals and Replacements

Contains information about FRU removals and replacements, including ESD precautions.

Locations

Illustrates the locations of various system components and connectors.

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

General Checkout

Provides a procedure for diagnosing computer problems and identifying next steps.

Memory Checkout

Details steps for isolating memory-related problems and checking memory card installation.

Power Systems Checkout

Describes how to verify symptoms by testing various computer power sources.

Symptom-to-FRU Index

Lists symptoms, errors, and possible causes to help identify FRUs for servicing.

FRU Removals and Replacements

Contains information about FRU removals and replacements, including ESD precautions.

Locations

Illustrates the locations of various system components and connectors.

Common Devices Checkout

External Diskette Drive Test

Isolates problems related to diskette controllers, drives, or diskettes.

External Display Self-Test

Provides instructions for troubleshooting external display issues.

External Keyboard/Auxiliary Input Device Checkout

Covers testing and troubleshooting for auxiliary input devices like keyboards and mice.

Fax/Modem Checkout

Details procedures for diagnosing and resolving fax/modem problems.

Printer Checkout

Outlines steps for testing and troubleshooting printer connectivity and functionality.

Port Replicator Checkout

Guides on isolating problems related to the port replicator's functionality.

TrackPoint II Checkout

Provides steps to check and troubleshoot TrackPoint II functionality.

TV Tuner

Explains the setup and operation of the TV Tuner option.

Troubleshooting

Offers solutions for common problems encountered with the TV Tuner.

Miscellaneous Information

Acronyms, Abbreviations and Terms

Lists and defines common acronyms, abbreviations, and terms used in the manual.

Problem Determination Tips

Provides guidance on gathering information for effective problem determination.

Phone Numbers, U.S. and Canada

Lists important phone numbers for IBM support and authorized dealers.