76 Chapter 4

Index of Symptom-to-FRU Error Message

LCD-Related Symptoms

Symptom / Error Action in Sequence
LCD backlight doesn't w ork
LCD is too dark
LCD brightness cannot be adjusted
LCD contrast cannot be adjusted
Enter BIOS Utility to execute “Load Setup Default Settings”, then
reboot system.
Reconnect the LCD connector s .
Keyboard (if contrast and brightness function key doesn't work).
LCD inverter ID
LCD cable
LCD inverter
LCD
Main 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
Main Board
LCD has extra horizontal or vertical lines
displayed. LCD inverter ID
LCD inverter
LCD cable
LCD
Main Board

Indicator-Related Symptoms

Symptom / Error Action in Sequence
Indicator incorrectly remains off or on, but
system runs correctly Reconnect the inverter board
Inverter board
Main Board

Power-Related Symptoms

Symptom / Error Action in Sequence
Power shuts down during operation Power source (battery pack and power adapter). See “Power
System Check” on page 71.
Battery pack
Power adapter
Hard drive & battery connection board
Main Board
The system doesn’t power-on. Power source (battery pack and power adapter). See “Power
System Check” on page 71.
Battery pack
Power adapter
Hard drive & battery connection board
Main Board
The system doesn’t power-off. Power source (battery pack and power adapter). See “Power
System Check” on page 71.
Hold and press the power switch for more than 4 seconds.
Main Board
Battery can’t be charged See “Check the Battery Pack” on pag e 71.
Battery pack
Main Board