Philips 32MF338B/27, Руководство по обслуживанию

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FUZ2.0U LA 25
Check if there is any leak or short-circuit on
the loaded circuit, and service it if defective.
AL+13V is not output.
FLOW CHART NO.6
Is approximately 13V voltage supplied to the
cathode of D638?
No
Yes
Check C638, D638, D639 and their periphery circuit,
andservice it defective.
P-ON+5V is not output.
FLOW CHART NO.8
Yes
Yes
No
Is approximately 6V voltage supplied to the
base of Q637?
See FLOW CHART No.7
AL+3.3V is not output.
FLOW CHART NO.7
Yes
No Is approximately 6.6V voltage supplied to the
cathode of D669? Check C654, D669 and their periphery circuit, and
service it if defective.
Check IC637, D654, D657 and their periphery circuit,
and service it if defective.
Is approximately 6.6V voltage supplied to the
collector of Q637?
Replace Q637.
No
See FLOW CHART No.10
LCD+24.5V is not output.
FLOW CHART NO.9
Yes
No
Is approximately 36V voltage supplied to the
cathode of D636?
Is approximately 36V voltage supplied to the
collector of Q632?
Is the voltage of base on Q632 lower than the
voltage of emitter on Q632 when turning the
power on?
Yes
Replace Q632.
Check C639, D636 and their periphery circuit, and
service it if defective.
Yes
Check D641, D652 and their periphery circuit, and
service it if defective.
No
Check Q634 and P-ON-H1 line, and
service it if defective.
No