Apple 5420/180 Manuale Utente

 

 Troubleshooting

Symptom Charts/Video - 8

 

Single vertical or 

horizontal line is 

displayed

1 Replace analog/video board assembly.

2 Replace CRT.

Predominant color tint 

or color cannot 

be adjusted

1 Verify that video board is securely connected to CRT 

socket.

2 Check cable connections to analog/video board.

3 If analog/video board is Rev A, replace internal RGB cable. 

4 Replace analog/video board assembly. Perform video 

adjustments (refer to “Video” in Adjustments chapter).

5 Replace CRT.

Picture breaks into 

diagonal lines, or 

picture rolls vertically 

or horizontally

1 Perform geometry adjustments. Refer to “Geometry” in 

Adjustments chapter.

2 Replace analog/video board assembly.