Apple macintosh iivx.vi.perf 600 Servicehandbuch

 

 Troubleshooting

Symptom Charts/Video - 2

 

Symptom Charts

 

Screen is dark, audio 

and at least one drive 

operate, fan is 

running, and LED is 

lit

1 Adjust brightness on monitor.

2 Replace monitor. Refer to appropriate monitor manual to 

troubleshoot defective monitor.

3 Replace video cable.

4 Replace VRAM SIMMs.

5 Replace logic board. Retain customer’s SIMMs.

Screen is dark, audio 

and drive do not 

operate, fan is 

running, and LED is 

lit

1 Remove peripherals.

2 Remove NuBus cards.

3 Replace DRAM SIMMs.

4 Replace VRAM SIMMs.

5 Replace power supply.

6 Replace logic board.