Apple lc 580.performa 580cd Service Manual

 

 Troubleshooting

Symptom Charts/Video

 

 (Continued)

 

 - 6

 

Screen is completely 

black except for 

single vertical or 

horizontal line 

displayed

1 Check yoke cable connection with power off.

2 Replace analog board. 

3 Replace CRT.

Predominant color 

tint or color cannot be 

adjusted

Perform video adjustments. Refer to “Video” in Adjustments 

chapter.

Picture breaks into 

diagonal lines, or 

picture rolls 

vertically or 

horizontally

1 Perform geometry adjustments. Refer to “Geometry” in 

Adjustments chapter.

2 Replace analog board.