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Troubleshooting Symptom Charts/Video
(Continued)
- 8
Video
(Continued)
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 video card.
6 Replace power supply.
7 Replace logic board.
Partial or whole
screen is bright and
audio is present, but
no video information
is visible
1 Replace video cable.
2 Replace VRAM SIMMs.
3 Replace video card.
4 Replace monitor. Refer to appropriate monitor manual to
troubleshoot defective monitor.
5 Replace logic board. Retain customer’s SIMMs.