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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 390E Hardware Maintenance Manual .. 19
Read This First .................. 19
What to Do First ................ 19
How to Disable the Password ......... 20
Product Overview . . . . . . . . . . . . . . . . . 22
Fn Key Combinations ............. 24
Status Indicators . . . . . . . . . . . . . . . . 25
Checkout Guide . . . . . . . . . . . . . . . . . 27
Audio Checkout . . . . . . . . . . . . . . . . 28
Diskette Drive Checkout ............ 28
CD-ROM ASM Checkout ............ 28
Fan ASM Checkout .............. 29
Keyboard and Auxiliary Input Device Checkout . 30
Memory Checkout . . . . . . . . . . . . . . . 31
Modem Board Checkout ............ 32
Power System Checkout ............ 33
TrackPoint Checkout . . . . . . . . . . . . . . 35
Power Management Features ......... 36
Symptom-to-FRU Index . . . . . . . . . . . . . . 39
Numeric Error Codes .............. 40
Error Messages . . . . . . . . . . . . . . . . 43
No Beep Symptoms .............. 43
LCD-Related Symptoms . . . . . . . . . . . . 44
Keyboard-Related Symptoms . . . . . . . . . . 44
Indicator-Related Symptoms . . . . . . . . . . 44
Power-Related Symptoms . . . . . . . . . . . 44
PC Card (PCMCIA)-Related Symptoms ..... 45
Speaker-Related Symptoms . . . . . . . . . . 45
Power Management-Related Symptoms ..... 45
Peripheral-Device-Related Symptom . . . . . . 46
Intermittent Problems . . . . . . . . . . . . . 46
Undetermined Problems . . . . . . . . . . . . 47
CE Utility Program Diskette ............ 48
Setting the LCD Panel ID ........... 48
Setting the Thermal Sensor .......... 48
Writing the RFID Data ............. 49
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