Troubleshooting

 

Symptom Charts/Video (Continued) - 6

 

 

 

Video (Continued)

 

 

 

 

Flashing or wavy

Replace analog board.

screen or monitor

 

 

 

emits high-pitched

 

 

 

noise

 

 

 

Raster size too short/

1

Adjust horizontal or vertical size control. Refer to

tall or narrow/wide

2

Adjustments chapter.

 

 

 

Replace analog board.

Linearity bad (size of

1

Perform video adjustments. Refer to “Video” in Adjustments

text/graphics differs

2

chapter.

at top, bottom, or

Replace analog board.

sides of screen)

 

 

 

Page 23
Image 23
Apple 578, 575, 577, 560, 550, 500 manual Video