LG GT350 - Microphone Trouble

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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
0
5
020S4
1
CLVE
103AV
0
R308
100nL301
C307
22n
L302 100n
22n
C308
C309
39p
C310
39p
39p
C311
n001
303L
VMIC_P
VMIC_N
MAIN_MIC_P
MAIN_MIC_N
MIC
(1608)
TP2
TP1