LG CJS98F User Manual

3-25
ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER SUPPLY ON SMPS BOARD
YES
YES
YES
YES
YES
No output 5.1 VA
No 12 V
Power line of MAIN PCB is short.
Replace F901 (same fuse).
Check or replace D963.
Is D960, D961 normal?
Replace BD901.
Check P_CTL from μ-com.
Check IC951 and replace.
Or
check line of MAIN PCB is short or not.
Check or replace D960, D961.
NO
NO
NO
NO
NO
Is the F901 normal?
Is the
VCC 12 VA supplied to IC951
pin1?
Is the VCC
(11 V ~ 25 V) supplied to IC901
pin4?
Is BD901 normal?
Is there
‘HIGH’ signal at IC951
pin4?

LG CJS98F Specifications

General

Brand	LG
Model	CJS98F
Category	Stereo System
Language	English