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A
Power Circuit abnormal
START
Is C328 AC 220V?
Yes
Is C301 DC 310V?
Yes
Are2,3pinofN301resistance
highimpedance?
Yes
Are transformer secondary
6V, 15V output?
Yes
Is XP303 normal?
Yes
Normal
6
No
Power cord isn't inserted firmly
or power cord is open.
No
Check commute circuit.
Check L301 andL302.
No
Checkiftransformeris damaged.
No
Checksecondary commutecircuit.
Check secondaryfeedback circuit.
Check if secondary short.
No
Check regulatedcircuit.
Check N302 andperipheral
F301 is open.
XP301 is open.
XP302 is open.
Replace N301.
Check V304.
components.
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