FUNAI 32" LCD TV/DVD, Руководство по обслуживанию

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9-3 A94F0TR
See FLOW CHART No.9 <P-ON+7V is not output.>
See FLOW CHART No.9 <P-ON+7V is not output.>
AL+13V(M+13V) is not output.
FLOW CHART NO.12
Yes
No
Is approxi13V voltage supplied to the
cathode of D641 and D642? Check C639, D642 and their periphery circuit, and
service it if defective.
Check if there is any leak or short-circuit on
the loaded circuit, and service it if defective.
P-ON+5V is not output. (LCD+16V is outputted normally.)
FLOW CHART NO.10
Is approxi6.8V voltage supplied to the
collector of Q643?
Is approxi6V voltage supplied to the
base of Q641 and the base of Q643?
No
Yes
Yes
Check D645 and their periphery circuit, and service
it if defective.
No
Replace Q641 and Q643.
P-ON+5V(TUNER+5V) is not output. (LCD+16V is outputted normally.)
FLOW CHART NO.11
Is approxi6.7V voltage supplied to the
collector of Q640?
Is approxi6V voltage supplied to the
base of Q641 and the base of Q643(Q640)?
No
Yes
Yes
Check D645 and their periphery circuit, and service
it if defective.
No
Replace Q641 and Q643(Q640).
D+5.5V is not output.
FLOW CHART NO.13
Is approxi5V voltage supplied to the
cathode of D634?
Yes
No
Check if there is any leak or short-circuit on
the loaded circuit, and service it if defective.
Check C634, D634 and their periphery circuit, and
service it if defective.