60 Chapter 4

Index of Symptom-to-FRU Error Message

LCD-Related Symptoms

Symptom / Error Action in Sequence
LCD backlight doesn't work
LCD is too dark
LCD brightness cannot be adjusted
LCD contrast cannot be adjusted
Enter BIOS Utility to execute “Load Setup Default Settings”, th en
reboot system.
Reconnect the LCD connectors.
Keyboard (if contrast an d brightness function ke y doesn't work).
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
Unreadable LCD screen
Missing pels in characters
Abnormal screen
Wrong color displayed
Reconnect the LCD connector
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
LCD has extra horizontal or vertical lines
displayed. LCD inverter ID
LCD inverter
LCD cable
LCD
System board

Indicator-Related Symptoms

Symptom / Error Action in Sequence
Indicator incorrectly remain s of f or on, but syst em
runs correctly Reconnec t the inverter board
Inverter board
System board

Power-Related Symptoms

Symptom / Error Action in Sequence
Power shuts down durin g operation Power sour ce (battery pack and po wer adapter). See “Power
System Check” on page 55.
Battery pack
Power adapter
Hard drive & battery conn ection board
System board
The system doesn’t powe r-on. Power source (battery pack an d power adapter). See “Po wer
System Check” on page 55.
Battery pack
Power adapter
Hard drive & battery conn ection board
System board
The system doesn’t powe r-off. Power source (battery pack an d power adapter). See “P ower
System Check” on page 55.
Hold and press the power switch for more than 4 secon ds.
System board
Battery can’t be charged See “Check the Battery Pack” on page 55.
Battery pack
System board
340SG.book Page 60 T hursday, October 28, 1999 10:51 AM