TROUBLE SHOOTING FLOW CHART
1. POWER CIRCUIT
When changing the parts which are broken first, remove the power plug from the socket and then discharge the voltage across the terminals of C806. (Use an external KΩ resistance)
When check the primary circuit , use the oscilloscope isolated properly (Use the isolated transformer) and connect GND to the primary GND, however it is not necessary to isolate the oscilloscope when check the secondary circuit.
A. CHECKING THE PRIMARY CIRCUIT
No output Voltage.
YES
Prepare the oscilloscope connected the isolated Transformer.
YES
Check F801 Fuse.
YES
Is voltage applied to D801?
YES
Is voltage applied to the terminals of C806?
YES
NO
NO
Check L801.
Check M801 Power Module,
D801
Check the Secondary circuit
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