LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 88 -
4.7.5 Microphone for headset
MIC for Head_Set path as below:
Insert Headset
→
EAR_SENSE_N(pin8) go 0V
→
MSM6280 sense Head_Set insertion
→
EAR_MIC
signal
→
MSM6280.
CE
6
2
GND1
5
GND2
4
NC
VDD
1
3
VOUT
R1114D181D
U400
VREG_MSMP_2.7V
R401 51
C408
DNI
NUF2114MN
FL400
1
IN1
IN2
4
2
NC1
3
NC2
NC3
6
7
NC4
OUT1
8
5
OUT2
9
PGND
2200
R400
19
2
21
3
4
5
6
CN400
1
FB400
270nH
L400
R404
100K
1800
FB402
C420
DNI
33u
C416
2.2u
C537
51
R402
FB403
1800
C538
27p
C417
VREG_MSMP_2.7V
33u
FM_ANT
FB401
EAR_MIC_P
EAR_MIC_LDO_EN
HPH_R
HPH_L
10%
Place near MSM
C213
47p
0.1u
C212
1u
C215
47p
C210
0.1u
C200
C206
1u
C204
10p
C214
0.1u
C216
10u
1u
C203
L200
100nH
1u
C205
C211
0.1u
MIC1N
AF20
MIC1P
AE20
AF21
MIC2N
AF22
MIC2P
MICBIAS
T15
LINE_L_IN
AC21
AC22
LINE_L_IP
AC20
LINE_R_IN
LINE_R_IP
AC19
HPH_VREF
AA19
CCOMP
AA20
AF19
AUXIN
AE19
AUXIP
AUXOUT
AA18
MICBIAS
EAR_MIC_P
FM_AUDIO_L
FM_AUDIO_R
MIC1P
MIC1N
Summary of Contents for KF700
Page 1: ...Service Manual Model KF700 Service Manual KF700 Date May 2008 Issue 1 1 Internal Use Only ...
Page 193: ...Note ...
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