- 20 -
LGE Internal Use Only
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
ok
ok
Check Output Signal JK902
4,5 pin.
Replace Phone Jack(JK902)
ok
No
Check JK902
Replace Phone Jack
if found to be damaged.
ok
No
Check External Speaker
Replace External speaker.
ok
No
Check AMP IC(IC901) Power 24V
L902
No
Replace L902
Check AMP IC(IC901) Output
L904, L905
No
replace AMP IC(IC901)
Check Mstar External AUDIO output
C927, C928
No
Replace Mstar(IC101) or Main Board.
ok
Check AMP IC(IC901) Mute High
R924, 4pin
No
Check signal line. Or replace Mstar(IC101)
9. External Speaker Out
Summary of Contents for 39LY340C
Page 38: ......
