LG KE990 Service Manual - Page 57
Headset Hook Switch
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3. TECHNICAL BRIEF SPM0204HE5-PB-3 P G2 4 G1 O 3 2 1 MIC500 MIC C563 10u C564 47p MICBIAS C567 22n C568 22n C569 NA MIC1N MIC1P C575 C576 33p 10p R904 EAR_MIC_P VREG_MSMP_2.7V R905 10K 100K NCS2200SQ2T2G U902 2 VIN+ 3 GND OUT VCC 1 VIN- 4 5 HOOK_SENSE_N 1M R906 5.1K C905 R907 0.1u Headset Hook Switch Figure . Audio part schematics LGE Internal Use Only - 58 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
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3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
MIC
10u
C563
NA
C569
33p
C575
47p
C564
2
G1
3
G2
1
O
4
P
SPM0204HE5-PB-3
MIC500
22n
C568
22n
C567
10p
C576
MICBIAS
MIC1P
MIC1N
Headset Hook Switch
R905
10K
VREG_MSMP_2.7V
R907
5.1K
C905
0.1u
100K
R906
1M
R904
U902
NCS2200SQ2T2G
2
GND
1
OUT
VCC
5
3
VIN+
VIN-
4
HOOK_SENSE_N
EAR_MIC_P
Figure . Audio part schematics