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AUDIO SUBSYSTEM
FROM THE Q4
VREG_MSME_1.8V
+VPWR
C501 2.2u
C502
2.2u
C4
R519
12
RCV_N
IN3-
OUT+
R520
12
C3
RCV_P
IN3+
OUT-
L504
100n
C508
1u
A3
HPH_L
M501
IN1+
HPL
C509
1u
B3
IN1-
HPH_R
TPA2055D3
L505
100n
HPR
C510
39n
A4
EUSY0420001
LINE_OUT_P
IN2+
B4
C511
39n
LINE_OUT_N
IN2-
CP
B2
SDA
CN
AUDIO_Prox_I2C_SDA
C2
SCL
AUDIO_Prox_I2C_SCL
C516
C515
C517
1u
1u
1u
CMIC
FROM THE E0
MIC_BIAS
R509
R510
2.2K
1K
R513
100
C523 0.1u
MIC_1P
C525
39pF
R515
100
C527 0.1u
MIC_1N
R516
C533
C534
C531
C532
39p
39p
39p
10u
2.2K
Close to MIC
LGE Internal Use Only
Line Width 0.3mm ÀÌ»ó
E3
100n
L502
SPK_OUT_P
E4
L503
100n
SPK_OUT_M
B1
EAR_L
D501
D502
A1
EAR_R
D1
C512
1u
C513
C514
E1
47p
47p
Proximity Sensor
VREG_MSME_1.8V
MIC501
AUDIO_Prox_I2C_SCL
2
AUDIO_Prox_I2C_SDA
1
OBM-410L44-RC1882
SUMY0003816
VA504 VA505
FROM THE E0
VREG_PROX_2.8V
R504
10
R511
8
1
SCL
LEDA
10
C522
7
2
SDA
LEDC
10u
U502
6
3
VIO
VCC
5
4
VOUT
GND
PROX_OUT
C526
EUSY0376201
1u
GP2AP002S00F
C529
C530
0.1u
4.7u
- 134 -
7. CIRCUIT DIAGRAM
HEADSET_DETECT
FROM THE E0
VREG_MSME_1.8V
VREG_Headset_2.8V
C521
1u
R507
R508
1M
1M
5
CAP
R512
R501
2
1
MIC_MODE
MODE
RES
U501
2.2K
3
8
SWD
MIC
3.5PI_KEY_POLE_DET
HS_MIC
MAX14579E
R514
4
7
DET
DET_IN
EAR_SENSE
EAR_SENSE_3.5PI
10K
EAN62065901
C528
220n
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
DNI
HS_MIC_N
R502
2.2K
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Troubleshooting
