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Symptom-to-FRU error messages
LCD
Power
Symptom / Error Action in Sequence
• The LCD backlight doesn't work.
• The LCD is too dark.
• The LCD brightness cannot be
adjusted.
• The LCD contrast cannot be adjusted.
• Run “Load Setup Defaults” using the BIOS Setup Utility, then
reboot the notebook.
• Reconnect the LCD connectors.
• Test or replace the keyboard (if contrast and brightness
function key doesn't work).
• Check the LCD inverter ID.
• Test or replace the LCD cable.
• Test or replace the LCD inverter.
• Test or replace the LCD.
• Test or replace the system board.
• The LCD screen is unreadable.
• Missing pels in characters.
• The screen appears abnormal.
• The wrong color is displayed.
• Reconnect the LCD connector.
• Check the LCD inverter ID.
• Test or replace the LCD cable.
• Test or replace the LCD inverter.
• Test or replace the LCD.
• Test or replace the system board.
The LCD is displaying extra horizontal or
vertical lines.
• Check the LCD inverter ID.
• Test or replace the LCD cable.
• Test or replace the LCD inverter.
• Test or replace the LCD.
• Test or replace the system board.
Symptom / Error Action in Sequence
The notebook shuts down during
operation.
• Test the power source (battery pack and power adapter). See
“Testing the power system” on page 140.
• Test or replace the battery pack.
• Test or replace the power adapter.
• Test or replace the system board.
The notebook doesn’t turn on. • Test the power source (battery pack and power adapter). See
“Testing the power system” on page 140.
• Test or replace the battery pack.
• Test or replace the power adapter.
• Test or replace the system board.
The notebook doesn’t turn off. • Test the power source (battery pack and power adapter). See
“Testing the power system” on page 140.
• Press and hold the power button for more than four seconds.
• Test or replace the system board.
The battery can’t be charged. • Test the battery pack. See “Check the battery pack” on page
141.
• Test or replace the battery pack.
• Test or replace the system board.