Apple g4 Manual Do Utilizador

PowerBook G4 (1GHz/867MHz) Troubleshooting - 16

Misc. Symptoms Symptom Charts

7. Replace inverter board.

8. Replace display assembly.

9. Replace logic board.

1. The device must be connected to the S-video port while the PowerBook is sleeping or 

off for the device to be recognized.

2. If running Mac OS X, verify that this issue is also in Mac OS 9.

3. Verify monitor that is used in testing is known-good and is supported by this computer.

4. Try different cable(s).

5. Replace logic board.

1. In the Resolution control strip, see if the device is being recognized. If so select 

resolution.

2. If running Mac OS X, verify that this issue is also in Mac OS 9.

3. Verify monitor that is used in testing is known-good and is supported by this computer.

4. Try another DVI-to-VGA adapter cable.

5. Restart the computer and test again.

6. Replace logic board.

 When the display is being closed, a hook in the top of the display housing 

should be magnetically pulled down to the latch. When the latch button is pushed, 
the hook should release and retract into the display housing.

1. Verify hook operation by exercising the latch mechanism.

2. If the hook does not operate properly, replace the display assembly.

3. If the latch or latch button does not operate properly, replace the top case assembly.