4. TROUBLE SHOOTING
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Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
(3) Check The MAIN Board
Check the Output signal of Audio Codec (below)
TWL6040
TP3 AUD_SPK_N
TP4 AUD_SPK_P
1n
C840
C839
1n
120
FB803
A8
A9
B5
B4
B8
B9
A5
A4
HFLP1
HFLN1
HFRP1
HFRN1
HFLP2
HFLN2
HFRP2
HFRN2
FB804
120
AUD_SPK_N
AUD_SPK_P
TP3 AUD_SPK_N
TP4 AUD_SPK_P