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4. Troubleshooting
4-4-17 If oven malfunction
Oven does not operate.
Is Fuse OK?
YES
Is the magnetron
temperature switch normal?
YES
Is SMPS power supply
cirduit normal?
YES
Is the IC01 output of
PCB normal?
YES
Checking high
voltagecircuts
*Inspection method
Is Primary interlock
NO
switch normal?
YES
Is Power Relay normal?
NO
Replace switch
Do check power supply
NO
circuit
Do check
NO
Relay control circuit
Is high voltage dioed
normal?
Is high voltage dioed
normal?
YES
Is high voltage
capacitor normal?
YES
Is magnetron normal?
36
NO
NO
NO
Power supply circuit check point
NO
NO
Relay control circuit check point
NO
NO
NO

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