Apple lc 580.performa 580cd Service Manual

 

 Troubleshooting

Symptom Charts/Video

 

 (Continued)

 

 - 7

 

Out of convergence 

(color bleeds from 

text or lines)

1 Perform convergence adjustment. Refer to “Convergence” in 

Adjustments chapter. Note that some misconvergence is 

normal, especially around edges of screen. Contact Apple 

Technical Support if you’re uncertain whether the 

misconvergence is within specification.

2 Replace analog board. 

Black screen spots 

(burnt phosphors)

Replace CRT.