Apple macintosh plus サービスマニュアル
Troubleshooting
Symptom Charts/Video - 2
Symptom Charts
Video
No video, but audio
tone is present and
drive operates
1 Turn contrast control fully clockwise.
2 Check video cable connections.
3 Replace power supply board.
4 Replace neck cable.
5 Replace logic board. Retain customer’s SIMMs.
Screen is bright and
audio is present, but
no video information
is present
1 Replace power supply board.
2 Replace logic board. Retain customer’s SIMMs.