Apple color classic Manual Do Serviço

 

 Troubleshooting

Symptom Charts - 2

 

Screen is black, too 

dark, or too bright; 

audio and drive 

operate

1 Adjust contrast button on front bezel.

2 Reset PRAM.

3 Check yoke cable connection.

4 Perform video adjustments. Refer to “Video” in Adjustments 

chapter.

5 Replace analog board.

6 Replace CRT.

Screen is bright and 

audio is present, but 

no video information 

is visible

1 Perform video adjustments. Refer to “Video” in Adjustments 

chapter.

2 Replace analog board. 

3 Replace CRT.