LG CJS45F Service Manual

No PVDD
YES
F901 normal?
Replace F901 (Use the same fuse).
YES
NO
BD901 normal?
Replace BD901.
YES
YES
NO
TH901(TH903) normal?
Replace TH901.
YES
YES
NO
Is Vcc
(10 V ~ 18 V) supplied to
IC911 pin4?
D903 normal?
YES
NO
Check or replace D903.
• Check P-CTRL “H” signal from MCS.
• Check PC902.
Q901 normal?
Replace Q901.
Check or replace Q911.
YES
NO
D951 normal?
Replace D951.
YES
NO
Is there about 2.5 V
at IC951 pin1?
Replace IC951.
YES
NO
Q901 base “H”?
Power line of main PCB is short.
NO
NO
3-18
ELECTRICAL TROUBLESHOOTING GUIDE
jomi

LG CJS45F Specifications

General

Brand	LG
Model	CJS45F
Category	Stereo System
Language	English