IBM ThinkPad 240X, Hardware Maintenance Manual, Page: 5 / 84

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
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