LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 77 -
4.7 Microphone trouble
Check Points
-Microphone hole
-Mic. Bias & signal line
2.2u
C330
VBAT
C327
0.1u
0.1u
C328
ICVL0505101V150FR
VA302
VUSB_USB
38
39
4
40
41
42
43
44
5
6
7
3
1
2
CN301
C329
27p
ICVL0505101V150FR
VA301
L305
100nH
MAIN_MIC_P
MAIN_MIC_N
VMIC_P
VMIC_N
G3
4
6
G4
OUT
1
5
PWR
MIC100
SPM0204LE5-QB
2
G1
G2
3
MAIN_MIC_P
VMIC_P
MAIN_MIC_N
MAIN_MIC_N
CN301
C329
C328 C327
MIC100