LG F3000 - Microphone Trouble

CLOSE TO ABB
CLOSE TO MIC
R212
100
2.2K
R209
C202
10u
C211
0.1u
C209
39p
R207
100
MIC201
SOB-413S44-RC3310
1
2
R200
1K
C216
R205
2.2K
39p
R208
0
C210
39p
VA201
EVL5M02200
2V5_VMIC
EVL5M02200
VA202
C215
39p
39p
C201
VINNORP
VINNORN
4. TROUBLESHOOTING
- 87 -
4.13 Microphone Trouble
TEST POINT
CIRCUIT DIAGRAM
R200
R205
R207
C211
R209
D16
2V8_VMEM
BACK_BATT
(1608)
2V5_VMIC
VCORE2
VEXT1
A4
B4
VEXT2
T3
VMEM1
VMEM2
T2
VMIC
N16
T7
VRTC
VSIM
T6
E15
VUSB
VVCXO
H16
VABB
VAPP
F16
E16
VAPPGATE
T4
VBACK
VCORE1
P1
N1
VUSB
1uC121
2V8_VEXT
2V75_VABB
VBAT
2.2uC117
2V85_VSIM
1u
1V8_VRTC
C114
1V8_VCORE
1uC122
C116 1u
10KR100
1uC113
1uC123
1uC118
C115
2V75_VVCXO
0.1u
Figure 4-13