LG U990 Service Manual page 68

SPM0204HE5-PB-3
EAR_MIC_P
VREG_MSMP_2.7V
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C563
P
4
G2
3
G1
2
O
1
MIC500
MIC
NCS2200SQ2T2G
U902
2
GND
3
VIN+
R905
VCC
4
VIN-
5
10K
5.1K
C905
R907
0.1u
Figure . Audio part schematics
C564
47p
10u
C567 22n
C568 22n
C575 C576
33p 10p
OUT
HOOK_SENSE_N
1
Headset Hook Switch
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3. TECHNICAL BRIEF
MICBIAS
MIC1N
C569
NA
MIC1P
LGE Internal Use Only