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A
Power Circuit abnormal(For main board)
START
Is 1pin of Q404 DC 12V?
YES
Is 40pin of U201 DC 5V?
YES
Is 26pin of U201 DC 5V?
YES
Is 33pin of U201 DC 5V?
YES
Is 5pin of Q404 DC 12V?
Is 2pin of U404 DC 5V?
YES
Is net of 8V DC 8V?
YES
Is 39pin of U201 DC 3.3V?
YES
Normal
All manuals and user guides at all-guides.com
NO
NO
NO
NO
NO
NO
NO
NO
Check D307
Check Q401 U403 L401and peripheral
components.
Check ACC and ACC fuse.
Check Zd401 and peripheral components.
Check U201 and peripheral components
Check Q404 Q408 and peripheral components
Check U404 and peripheral components
Check ZD439 and peripheral components
Check U402 and peripheral
components
7
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