Apple PowerBook Duo Specifications download pdf (Page 26)

Troubleshooting Symptom Charts/Video - 4

Video

No external display,

but computer

appears to operate

correctly

1 Adjust screen contrast.

2 Reseat video cable.

3 Replace video cable.

4 Try known-good external display. If now OK, replace and

troubleshoot original display.

5 Replace Duo MiniDock logic board.

Raster or video

display problems at

external monitor

1 Reseat video cable.

2 Replace video cable.

3 Try known-good external display. If now OK, replace and

troubleshoot original display.

4 Replace Duo MiniDock logic board.

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Apple PowerBook Duo Specifications Page 26