LG 32LX330C Series, Service Manual

Page: 26 / 55

- 26 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
12. External Speaker Out
Check AMP IC(IC3400) Power 24V
L3400
Check Output Signal JK3400
4,5 pin.
Check Mstar External AUDIO output
C3401, C3402
Check AMP IC(IC3400) Mute High
R3403, 4pin
Check signal line. Or replace LGE2134(IC101)
Replace L3400
Replace Phone Jack(JK3400)
Check AMP IC(IC3400) Output
L3401, L3402
Check JK3400
Check External Speaker
replace AMP IC(IC3400)
Replace LGE2134(IC101) or Main Board.
Replace Phone Jack
if found to be damaged.
Replace External speaker.
NO
NO
NO
NO
NO
NO
NO
OK
OK
OK
OK
OK
OK