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Audio SUB SYSTEM
VREG_MSME_1.8V
VBAT
FB700
FB701
600
600
C700
C701
C702
C703
0.1u
4.7u
0.1u
2.2u
R702
10
RCV_N
R703
RCV_P
10
C4
E3
FB705
IN3-
OUT+
C735
DNI
C3
E4
FB706
FM_L
IN3+
OUT-
C736
DNI
FM_R
A3
B1
C714
2.2u
HPH_L
IN1+
HPL
C715
2.2u
B3
M700
HPH_R
IN1-
A1
HPR
C716
39n
A4
LINE_OP
IN2+
B4
D1
C718
39n
C719
2.2u
LINE_ON
IN2-
CP
B2
E1
AUDIO_I2C_SDA
SDA
CN
C2
AUDIO_I2C_SCL
SCL
C723
C724
C725
2.2u
2.2u
2.2u
VREG_MSME_1.8V
3.5pi Ear Jack Connector
EAR_MIC_BIAS CIRCUIT
Delete 11.03.24
FM_ANT
R710
EAR_R
1
EAR_SENSE_3.5PI
R711
EAR_L
1
HS_MIC
C729
C730
C732
C733
DNI
C731
47p
47p
33p
15p
LGE Internal Use Only
C707
C708
1n
1n
SPK_RCV_P
R704
100
SPK_RCV_N
MIC_1P
EAR_L
EAR_R
R705
100
MIC_1N
EAR_SENSE CIRCUIT
Delete 11.03.24
M6-GND
1000
FB702
6
M1-R
1
M4-DETECT
4D
1000
FB703
M4-L
1800
4
FB704
M5-MIC
5
CN701
ZD700
L702
33n
CMIC
MIC_BIAS
R700
1K
R701
2.2K
C711
0.1u
FB707
600
2
C712
DNI
FB708
600
1
C713
MIC700
39pF
C717
0.1u
C722
10u
C720
DNI
Varister Can be Changed to TVS or ECLAMP
MTK, S-GOLD Series must be removed.
HEADSET_DETECT
VREG_MSME_1.8V
MIC_MODE
3.5PI_KEY_POLE_DET
EAR_SENSE
- 138 -
VIBRATOR
VBAT
VB700
D700
L700
82n
1
L701
82n
2
VIB_DRV_N
VA700
VA701
SPEAKER
SPK_RCV_P
SPK_RCV_N
VA704
VA705
C726
C727
33p
33p
VREG_P3_2.85V
C728
1u
5
CAP
2
1
R714
MODE
RES
2.2K
3
U700
8
SWD
MIC
HS_MIC
MAX14579E
4
7
R715
DET
DET_IN
EAR_SENSE_3.5PI
10K
EAN62065901
C734
220n
DET
SWD
3 Pole
L
L
4 Pole
L
H
Copyright © 2012 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
CN700
1
2
HIR-02A57-0000AA
Only for training and service purposes
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Troubleshooting
