Packard Bell ENTJ75, Service Manual

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129
Symptom-to-FRU error messages
LCD
Power
Symptom / Error Action in Sequence
n
The LCD backlight doesn't work.
n
The LCD is too dark.
n
The LCD brightness cannot be adjusted.
n
The LCD contrast cannot be adjusted.
n
Run “Load Setup Defaults” using the BIOS Setup Utility, then reboot
the notebook.
n
Reconnect the LCD connectors.
n
Test or replace the keyboard (if contrast and brightness function key
doesn't work).
n
Check the LCD inverter ID.
n
Test or replace the LCD cable.
n
Test or replace the LCD inverter.
n
Test or replace the LCD.
n
Test or replace the system board.
n
The LCD screen is unreadable.
n
Missing pels in characters.
n
The screen appears abnormal.
n
The wrong color is displayed.
n
Reconnect the LCD connector.
n
Check the LCD inverter ID.
n
Test or replace the LCD cable.
n
Test or replace the LCD inverter.
n
Test or replace the LCD.
n
Test or replace the system board.
The LCD is displaying extra horizontal or vertical
lines.
n
Check the LCD inverter ID.
n
Test or replace the LCD cable.
n
Test or replace the LCD inverter.
n
Test or replace the LCD.
n
Test or replace the system board.
Symptom / Error Action in Sequence
The notebook shuts down during operation.
n
Test the power source (battery pack and power adapter). See “Testing
the power system” on page 118 .
n
Test or replace the battery pack.
n
Test or replace the power adapter.
n
Test or replace the system board.
The notebook doesn’t turn on.
n
Test the power source (battery pack and power adapter). See “Testing
the power system” on page 118 .
n
Test or replace the battery pack.
n
Test or replace the power adapter.
n
Test or replace the system board.
The notebook doesn’t turn off.
n
Test the power source (battery pack and power adapter). See “Testing
the power system” on page 118 .
n
Press and hold the power button for more than four seconds.
n
Test or replace the system board.
The battery can’t be charged.
n
Test the battery pack. See “Check the battery pack” on page 119 .
n
Test or replace the battery pack.
n
Test or replace the system board.