4. TROUBLE SHOOTING
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Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
CN7000
HIR-02A57-0000AA
2
1
VA7001
VA7000
SPK_RCV_P
SPK_RCV_N
TP1
FB4000
220
R4020
0
220
FB4001
C4065
1n
C4042
18n
18n
C4062
1n
C4066
R4019
0
C4037
3.3n
P22
R19
N21
P20
F18
H18
H16
N19
P18
F16
H14
F14
E21
E19
M16
M14
M6
M8
D1
8
C1
9
C1
7
C15
D16
E1
5
D1
4
E1
3
MPP1 MPP2 MPP3 MPP4 MPP5 MPP6 MPP7 MPP8_XO_THER
M
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
R4018
0
C4041
2.2u
2.2u
C4040
R4021
12
R4023
12
LINE_OP
HPH_R
HPH_L
RCV_P
RCV_N
TRK_LO_ADJ
LINE_ON
TRK_LO
SPK_RCV_P
SPK_RCV_N
EAR_L_PMIC
EAR_R_PMIC
EAR_GND
Route to 3.5pi GND
Route to MSM-AGND (pin B10)
TP3
TP2
CN7000(TP1)
U4001
FB4000,FB4001(TP2)
U2000
R4023,
R4021
(TP3)