Service manual

21
5. Unstable Picture
5-1. Horizontal
Unstable
picture
Is H.Sync
input pin of IC501
correct?
Check H.Sync Out of
Micom or its ambient
circuits.
Is the
pin 29 of IC501
12~13V?
Check the value of
C402, R423.
Yes
Yes
No
No
Trouble in IC501.
TROUBLESHOOTING HINTS