Philips 40PFL4609/F8 - Page 36

8-2 PL14.32ATR
No
AMP+13V is not output.
FLOW CHART NO.6
Is approximately +13V voltage supplied to the cathode
of D653(D655)?
Ye s
Check D653, D655, C654, C655, C668 and their
periphery circuit. Repair it if defective.
Check if there is any leak or short-circuit on the load
circuit. Repair it if defective.
Check if there is any leak or short-circuit on the load
circuit. Repair it if defective.
P-ON+21V is not output.
FLOW CHART NO.5
Is approximately +21V voltage supplied to the cathode
of D650(D651, D652, D659)?
No
Ye s
Check D650, D651, D652, D659, C651, C652, C653
C657, C658 and their periphery circuit. Repair it if
defective.
AL+3.3V is not output.
FLOW CHART NO.7 [TYPE A]
Is approximately +13V voltage supplied to the emitter
of Q658?
Is approximately +12V voltage supplied to the base of
Q658?
No
Ye s
Ye s
Check D653, D655, C654, C655, C668 and their
periphery circuit. Repair it if defective.
Check D662, Q656 and their periphery circuit.
Repair it if defective.
No
Replace Q658.