Trouble Shooting 5-1 - Samsung DVD-R120/AXAX Instrucciones De Servicio

5. Troubleshooting
NO Power Detected
(Stand by LED OFF)
Operation of PQQX1 is
Check feed back PQIZ1
Samsung Electronics
No
PAFT1 is normal?
Yes
PVDLL1, PSDZ1
No
PFZZ1, PVZL1
SHOR and OPEN
Are normal?
Yes
Is there voitage at
Collector of
PPQQX1
Yes
Normal?
Yes
Change fuse
Change short circuited or
opened parts
No
Check 2st voltage
No
Replace PQQX1
5-1