Check if there is any leak or short-circuit on the load
circuit. Repair it if defective.
P-ON+20V is not output.
Is approximately +20V voltage supplied to the
cathode of D651?
No
Ye s
Check C654, C655, C656, C657, D651, R651, R667
and their periphery circuit. Repair it if defective.
FLOW CHART NO.5
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