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PowerBook G4 (12-inch) Troubleshooting -
11
Symptom Charts
Video (RGB adapter)
No video on an external device
1. Make sure RGB adapter cable is fully seated.
2. Click "Detect Displays" button to verify that monitor is being recognized in the Displays
preference pane, and is known-good and supported by this computer.
3. Try known-good RGB adapter.
4. Replace logic board.
5. Replace RGB adapter cable.
6. Replace logic board.
Display shows ghosting (signal reflection)
1. Verify that cables are correctly installed and firmly seated.
2. Replace video adapter.
Bluetooth
Bluetooth not recognized when ADC monitor connected
1. Disconnect all devices except the monitor.
2. Restart the computer.
3. If Bluetooth is still not recognized, refer to Bluetooth topic articles in the Knowledge
Base for the latest information on optimizing Bluetooth performance.