4. TROUBLE SHOOTING
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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
C4042
22n
C4062
22n
R4018
0
C4072
1u
TP4007
150K
R4014
FB4000
220
FB4001
220
C4065
1n
TP4006
1n
C4066
R4019
0
C4037
3.3n
U4001
P22
R19
N21
P20
F18
H18
H16
N19
P18
F16
H14
F14
E21
E19
M16
M14
M6
M8
N17
H10
H8
C11
F1
0
F8
F6
D10
E1
1
C7
C9
E9
D6
R2
3
R21
D18
C19
C17
C1
5
D1
6
E1
5
D14
E1
3
MPP1 MPP2 MPP3 MPP4 MPP5 MPP6 MPP7 MPP8_XO_THER
M
GND_SPKR_1 GND_SPKR_2 GPIO_
1
GPIO_
2
GPIO_
3
GPIO_
4
GPIO_
5
GPIO_
6
GPIO_
7
GPIO_
8
GPIO_
9
OPTION1
SBDT
PON_RESET_N
PM_INT_N
PA_THERM
PM_TRK_LO
TRK_LO_ADJ
HSED_BIAS1
HSED_BIAS2
EXT_IN_LP
EXT_IN_RM
HPA_IN_LP
HPA_IN_RM
HPA_GNDREF
SPKR_IN_M
SPKR_IN_P
HPA_CM_SNS
HPA_OUT_L
HPA_OUT_R
SPKR_BYP_M
SPKR_BYP_P
SPKR_OUT_M
SPKR_OUT_P
0
R4025
C4041
2.2u
2.2u
C4040
C4063
0.1u
R4021
12
R4023
12
VREG_MSME_1.8V
nPON_RST
LINE_OP
HPH_R
HPH_L
RCV_P
RCV_N
LINE_ON
TRK_LO
CHG_VALI
D
MSM_USIM1_CLK
MSM_USIM1_DAT
A
MSM_USIM2_CLK
MSM_USIM2_DAT
A
GSM_PA_DAC_REF
PM_INT_N
TRK_LO_ADJ
PMIC_SSBI
PCB_REVISION
USB_I
D
EAR_L_PMIC
EAR_R_PMIC
HSED_BIAS1
SPK_RCV_P
SPK_RCV_N
SIM1_CLK
SIM1_I
O
SIM1_RS
T
SIM2_RS
T
SIM2_CLK
SIM2_I
O
Route to MSM-AGND (pin B10)
U4001
U4041, U4040(TP2)
TP2
TP1
VA7006
FB7004
1800
CN7001
6
1
4
4D
5
M5-MIC
M4-DETECT
M4-L
M1-R
M6-GND
1800
FB7003
VA7007
FB7002
1800
ZD7000
VA7008
TP1