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86 Chapter 4
Index of Symptom-to-FRU Error Message
LCD-Related Symptoms
Symptom / Error Action in Sequenc
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”, then
reboot system.
Reconnect the LCD connectors.
Keyboard (if contrast and brightness function key doesn't work).
LCD inverter I
LCD cabl
LCD inverter
LCD
System board
Unreadable LCD screen
Missing pels in characters
Abnormal screen
Wrong color displayed
Reconnect the LCD connector
LCD inverter I
LCD cabl
LCD inverter
LCD
System board
LCD has extra horizontal or vertical lines
displayed.
LCD inverter I
LCD inverter
LCD cabl
LCD
System board
Indicator-Related Symptoms
Symptom / Error Action in Sequenc
Indicator incorrectly remains off or on, but system
runs correctly
Reconnect the inverter board
Inverter board
System board
Power-Related Symptoms
Symptom / Error Action in Sequenc
Power shuts down during operation Power source (battery pack and power adapter). See “Power
System Check” on page 80.
Battery pack
Power adapter
Hard drive & battery connection board
System board
The system doesn’t power-on. Power source (battery pack and power adapter). See “Power
System Check” on page 80.
Battery pack
Power adapter
Hard drive & battery connection board
System board
The system doesn’t power-off. Power source (battery pack and power adapter). See “Power
System Check” on page 80.
Hold and press the power switch for more than 4 seconds.
System board
Battery can’t be charged See “Check the Battery Pack” on page 82.
Battery pack
System board
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