Philips 22PFL4505D/F7 - Page 23

8-3 PL10.10TR
FLOW CHART NO.11
P-ON+9V is not output.
Is approximately +14V voltage supplied to the
collector of Q641?
Is approximately +10V voltage supplied to the
base of Q641?
No
Ye s
Ye s
Check D666 and their periphery circuit, and service
it if defective.
Check C1069, D643, D644 and their periphery
circuit, and service it if defective.
No
Replace Q641.
Is approximately
+5.8V voltage supplied to Pin(2) of
IC631?
Ye s
No
Check D654, D655, R659, R682 and their periphery
circuit, and service it if defective.
AL+3.3V is not output. (P-ON+7V is outputted normally)
FLOW CHART NO.12
Replace IC631.
Is approximately +14V voltage supplied to the cathode
of D643?
Ye s
No
Check C1069, D643, D644 and their periphery circuit,
and service it if d
efective.
SP+14V is not output.
FLOW CHART NO.13
Check if there is any leak or s
hort-circuit on the
loaded circuit, and service it if defective.
Is approximately +24V voltage supplied
to Pin(2) of IC201?
Ye s
No
Check C632, C1065, D632, D633 and their periphery
circuit, and service it if defective.
Is the "H" s
ignal inputted to Pin(7) of IC201?
Ye s
Replace IC201.
No
Check Q202, Q203, P-ON-H1 line and their periphery
circuit, and service it if defective.
PANEL+12.5V is not output.
FLOW CHART NO.14
Is approximately -8.7V voltage supplied to the emitter
of Q210?
Is approximately -8V voltage supp
lied to the base of
Q210?
Ye s
No
Check C636, D636, D637 and their periphery circuit,
and service it if defective.
Ye s
Check D204, R241, R242
and their periphery circuit,
and service it if defective.
No
Check Q202, Q203, D203, P-ON-H1 line and their
periphery circuit, and service it if def
ective.
PANEL-5.6V is not output.
FLOW CHART NO.15