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MW22
Service Manual
3. No Power & Power LED Off
Unstable power
Check sampling
Circuit
Check the R pin
voltage of IC803
about 2.5V
Check pin2 of
IC802 voltage is
3V
END
Check R822, R824,
R825,R826
Check the C pin
voltage of IC803
if 3V
Check R832
Check FB801, D803,
C807 if short
Change FB801,
C807
D803,
34
Change R822, R824,
R825,R826
Change
IC803
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