ELECTRICAL TROUBLESHOOTING GUIDE
No 14 VA
YES
Is F901 normal?
YES
Is TH901 normal?
YES
Is BD901 normal?
YES
Is the VCC
(11 V ~ 25 V) supplied to IC901
pin7?
YES
Is D955, D956 normal?
YES
Power line of MAIN board is short.
NO
Replace F901 (same fuse).
NO
NO
NO
Check or replace.
NO
Replace D955, D956.
2-42
Replace TH901.
Replace BD901.