8-6 A91F3TR
Replace Q209.
Is approximately +12V voltage supplied to the
base of Q209?
Ye s
No
Check Q207, Q208, D204, D211 and their periphery
circuit, and service it if defective.
No
LCD+12V is not output.
FLOW CHART NO.6
Is approximately +14V voltage supplied to the
collector of Q209?
Ye s
Check C631, D631, D635 and their periphery circuit,
and service it if defective.
P-ON+6.7V is not output.
FLOW CHART NO.7
Is approximately +6.7V voltage supplied to the
collector of D646?
Check C644, D646 and their per
iphery circuit,
and service it if defective.
Ye s
No
Check if there is any leak or short-circuit on
the loaded circuit, and service it if defective.
P-ON+5V is not output. (P-ON+6.7V is outputted normally.)
FLOW CHART NO.8
Is approximately +6V voltage supplied to the
base of Q641 and the base of Q643?
No
Ye s
Check D645 and their periphery circuit, and service
it if defective.
Replace Q641 and Q643.
TUNER+5V is not output. (P-ON+6.7V is outputted normally.)
FLOW CHART NO.9
Is approximately +6V voltage supplied to the
base of Q640?
No
Ye s
Check D645 and their periphery circuit, and service
it if defective.
Replace Q640.
AL+13V is not output.
FLOW CHART NO.10
Ye s
No
Is approximately +13V voltage supplied to the
cathode of D641 and D642?
Check C639, D641, 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.
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