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Troubleshooting - Sony RDR-VX521 Service Manual

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7. TROUBLESHOOTING

No Power Detected
NO
F1S01
YES
NO
BD01~04, ZD1S01~2
SHORT and OPEN
YES
NO
Voltage at
Collector of
Q1S01
YES
NO
Operation of
Q1S01
YES
Check feedback IC1S01
Change fuse
Change short or opened parts
Check the voltage f RIS02,
RIS03, and DIS05
Replace Q1S01
7-1
RDR-VX521/VX530
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