LG CJS98F User Manual

3-33
ELECTRICAL TROUBLESHOOTING GUIDE
B
Check speaker cable connection.
Check IC600.
Check IC700, IC801.
Check IC601,IC603
Check SMPS.
Check Q700, Q701,
Q802, Q803.
Check IC600.
Check IC702.
Check IC602
Check SMPS.
Check Q706, Q707.
Pin39 ~ 50 of IC600
FL/FR± signal OK?
Pin13
of IC700, IC801 FL/FR
audio signal OK?
IC601,IC603
FL/FR audio signal OK?
±66 V, -12 V, ±5 V
power voltage OK?
Q700, Q701,
Q802, Q803
OK?
Pin45, 46 of IC600
SW1± signal OK?
Pin13 of IC702
SW1 audio signal OK?
IC602
SW1 audio signal OK?
±66 V, -12 V, ±5 V
power voltage OK?
Q706, Q707
OK?
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
OK
NO AUDIO CHECK

LG CJS98F Specifications

General

Brand	LG
Model	CJS98F
Category	Stereo System
Language	English