FUNAI LH7-M22BB, Руководство по обслуживанию

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7-3 A9372TR
PANEL+12.5V is not output.
FLOW CHART NO.11
Is approximately 16V voltage supplied to the cathode
of D612?
No
Yes
Yes
Check D612, D620, C613 and their periphery circuit,
and service it if defective.
Check D613, C618 and their periphery circuit, and
service it if defective.
Check D640, R657 and their periphery circuit, and
service it if defective.
No
Yes
Replace Q611.
Replace Q615.
No
LCD-5.5V is not output.
FLOW CHART NO.12
Is approximately -10V voltage supplied to the anode of
D613?
Is approximately -9V voltage supplied to the base of
Q611?
Yes
Is approximately 13V voltage supplied to the base
of Q615?
No
Check D664 and their periphery circuit, and
service it if defective.
PANEL+25.6V is not output.
FLOW CHART NO.10
Yes
No
Is approximately 33V voltage supplied to the cathode
of D618?
Is approximately 33V voltage outputted to the collector
of Q612?
Yes
Check D617, D636 and their periphery circuit, and
service it if defective.
Check D618, D619, D623, C616 and their periphery
circuit, and service it if defective.
No
Check Q612, Q613, P-ON-H1 line and their periphery
circuit, and service it if defective.
Yes
Replace Q618.
AL+15V(2) is not outputted.
FLOW CHART NO.9
Yes
No
Is approximately 13V voltage supplied to the base of
Q618?
Check D612, D620, C613 and their periphery circuit,
and service it if defective.
No
Check D643, D644 and their periphery circuit, and
service it if defective.
Is approximately 16V voltage supplied to the collector
of Q618?