IBM ThinkPad 390, Hardware Maintenance Manual

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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
ThinkPad 390/i Series 1700 Hardware Maintenance
Manual . . . . . . . . . . . . . . . . . . . . . 19
Read This First . . . . . . . . . . . . . . . . . . 19
What to Do First . . . . . . . . . . . . . . . . 20
How to Disable the Password . . . . . . . . . 21
Product Overview . . . . . . . . . . . . . . . . . 21
Fn Key Combinations . . . . . . . . . . . . . 22
Status Indicators . . . . . . . . . . . . . . . . 23
Checkout Guide . . . . . . . . . . . . . . . . . 24
Audio Checkout . . . . . . . . . . . . . . . . 25
Diskette Drive Checkout . . . . . . . . . . . . 25
CD-ROM ASM Checkout . . . . . . . . . . . . 26
Fan ASM Checkout . . . . . . . . . . . . . . 27
Keyboard and Auxiliary Input Device Checkout . 27
Memory Checkout . . . . . . . . . . . . . . . 27
Modem Board Checkout . . . . . . . . . . . . 28
Power System Checkout . . . . . . . . . . . . 28
TrackPoint Checkout . . . . . . . . . . . . . . 30
Power Management Features . . . . . . . . . 31
Symptom-to-FRU Index . . . . . . . . . . . . . . 33
Numeric Error Codes . . . . . . . . . . . . . . 34
Error Messages . . . . . . . . . . . . . . . . 36
No Beep Symptoms . . . . . . . . . . . . . . 37
LCD-Related Symptoms . . . . . . . . . . . . 37
Keyboard-Related Symptoms . . . . . . . . . . 38
Indicator-Related Symptoms . . . . . . . . . . 38
Power-Related Symptoms . . . . . . . . . . . 38
PC Card (PCMCIA)-Related Symptoms . . . . . 38
Speaker-Related Symptoms . . . . . . . . . . 38
Power Management-Related Symptoms . . . . . 39
Peripheral-Device-Related Symptom . . . . . . 39
Intermittent Problems . . . . . . . . . . . . . 40
Undetermined Problems . . . . . . . . . . . . 40
CE Utility Program Diskette . . . . . . . . . . . . 41
Setting the LCD Panel ID . . . . . . . . . . . 41
Setting the Thermal Sensor . . . . . . . . . . 41
Contents
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