Sony RDR-GXD455 - Troubleshooting

6-1
RDR-GXD455
6. TROUBLESHOOTING
No Pow er Detected
F1S01
BD01-04, ZD1S01-2
SHORT and OPEN
Check feedback IC1S01
Change short or opened parts
Change fuse
Check the voltage f RIS02,
RIS03, and DIS05
Replace Q1S01
No
No
Voltage at
Collector of
Q1S01
No
Yes
Yes
Yes
Operation of
Q1S01
No
Yes