98 Chapter 4
Index of Symptom-to-FRU Error Message
LCD-Related Symptoms
Symptom / Error Check or do the following in sequence
LCD backlight doesn't work
LCD is too dark
LCD brightness cannot be adjusted
LCD contrast cannot be adjusted
TRun “Load Setup Defaults” in BIOS Setup Utility, then reboot
system.
TReconnect the LCD connectors.
TKeyboard (if contrast and brightness function key doesn't
work).
TLCD inverter ID
TLCD cable
TLCD inverter board
TLCD
TMainboard
Unreadable LCD screen
Missing pels in characters
Abnormal screen
Wrong color displayed
TReconnect the LCD connector
TLCD inverter ID
TLCD cable
TLCD inverter board
TLCD
TMainboard
LCD has extra horizontal or vertical lines
displayed.
TLCD inverter ID
TLCD inverter board
TLCD cable
TLCD
TMainboard
Indicator-Related Symptoms
Symptom / Error Check or do the following in sequence
Indicator incorrectly remains off or on, but
system runs correctly
TReconnect the LCD inverter board.
TMainboard
Power-Related Symptoms
Symptom / Error Check or do the following in sequence
Power shuts down during operation TPower source (battery pack and power adapter). See “Power
System Check” on page 89.
TBattery pack
TPower adapter
THard disk drive & battery connection board
TMainboard
The system doesn’t power-on. TPower source (battery pack and power adapter). See “Power
System Check” on page 89.
TBattery pack
TPower adapter
THard disk drive & battery connection board
TMainboard