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Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
LG Electronics
73/115
LGE Property
4.7 Microphone trouble
Check Points
-Microphone hole
-Mic. Bias & signal line
C308
MIC301
TP2
TP1
TP1
L303
TP2
L301
L302
MIC301
SUMY0010609
SPU0410HR5H-PB
4
3
2
1
P
G1
G2
O
C306
10u
05
02
0
S4
1
CL
V
E
10
3
A
V
0
R308
100n
L301
C307
22n
L302
100n
22n
C308
C309
39p
C310
39p
39p
C311
n0
01
30
3L
VMIC_P
VMIC_N
MAIN_MIC_P
MAIN_MIC_N
MIC
(1608)
TP2
TP1