LG E475F Service Manual page 82

EAR_GND
LGE Internal Use Only
KPD_PWR_N
PMIC_SSBI
nPON_RST
PM_INT_N
TRK_LO_ADJ
C4037
3.3n
C4072
HSED_BIAS1
1u
Route to MSM-AGND (pin B10)
HPH_L
HPH_R
Route to 3.5pi GND
0
R4020
EAR_L_PMIC
EAR_R_PMIC
GND
SPK_RCV_N
SPK_RCV_P
FB4001
FB4000 (TP2)
U4001
U2000
TP4005
TP4006
TP4007
R4018
0 R4019 0
TRK_LO
FM_LO_PMIC
FM_RO_PMIC
C4040 2.2u
LINE_OP
C4041 2.2u
LINE_ON
18n
C4042
18n
C4062
TP3
R4021 12
RCV_N
R4023 12
RCV_P
FB4000 220
FB4001 220
TP2
GSM_PA_DAC_REF
R4023,R4021(TP3)
- 82 - Copyright © 2013 LG Electronics. Inc. All right reserved.
K11
3. TROUBLE SHOOTING
KPD_PWR_N
M10
RESIN_N
K15
OPTION1
C11
SBDT
H8
PON_RESET_N
H10
PM_INT_N
N17
PA_THERM
M8
PM_TRK_LO
M6
TRK_LO_ADJ
M14
HSED_BIAS1
M16
HSED_BIAS2
E19
EXT_IN_LP
E21
EXT_IN_RM
F14
HPA_IN_LP
H14
HPA_IN_RM
F16
HPA_GNDREF
P18
SPKR_IN_M
N19
SPKR_IN_P
H16
HPA_CM_SNS
H18
HPA_OUT_L
F18
HPA_OUT_R
P20
SPKR_BYP_M
N21
SPKR_BYP_P
R19
SPKR_OUT_M
P22
SPKR_OUT_P
Only for training and service purposes