Service manual

Troubleshooting
Samsung Electronics 7-7
Digital output error
Output in VIC1-159 is normal?
Output in
AIC5-6, 8, 10 is
normal?
Check AVJ4 peripheral
soldering shot.
Check VIC1 peripheral circuit.
Check VIC5.
Yes
No No
Yes
No Power
(Standby LED OFF)
PF01 error?
PD01 voltage
is missing?
Replace PIC1.
Replace fuse.
Check PR10.
No No
Yes Yes
PIC1 drain (pin 1)
voltage is missing?
Check 2d voltage.
No
No
Voltage exists in
PIC1-5?
Check PR11, 12, 13, 14.
Yes
No
Pulse is missing
in PIC1-5?
Replace PIC1.
Check feed back.
Yes
Yes