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Troubleshooting Symptom Charts/Video - 12
Display is very light
or totally white
1 Adjust screen contrast (FSTN units only) and brightness
settings.
2 Verify data cable to I/O logic board connection, inverter
board connection, and I/O logic board connections.
Note:
For
13.3” displays only, replace data cable and ensure that the
cable is bent at the scored line.
3 Replace inverter board (international only).
4 Replace display (international only).
5 Replace I/O logic board.
An external monitor
connected to the
PowerBook shows no
video
1 Verify external monitor has power.
2 Try another video adapter.
3 Try another monitor.
4 Restart unit and reset PRAM.
5 Replace I/O logic board.