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KLV-32D300A, KLV-40D300A, KLV-46D300A (serv.man2) - Sony TV Service Manual (repair manual). Page 18

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KL
V
-32/40/46D300A
RM-GA008
G3 Board Trouble shooting for PFC Converter (KLV-40/46D300A)
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
PFC out
CN6501 pin 3
Vout<10V?
at 100-220V
input
IC6500 pin_8
15V?
IC6500 pin_7
Pulse wave appear
Q6301_B
V>0.6V
C6205_+
V>15V?
Standby (IC6200) fail
Pri_Vcc fail
Check Q6502,Q6503
_G Waveform
PFC Converter Fail
G3
(Vout<350V)
F6000 open or
R6009 open or
Q6502,Q6503
fail
PFC OVP operate
Check IC6500
Check Q6303
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