LG E475F Service Manual page 40

2.7n
W1900_W2100_RTX
C1085
L1020
L1021
1.8n
1.2p
TP2
WCDMA DUAL
FL1007
C1111
6
ANT
W850_W900_RTX
1.8n
C1112
L1033
5.6n
0.5p
2
GND1
4
GND2
5
GND3
Band V
VDD_RX
R1015
RX_WCDMA_2100_LNA_OUT
0
R1016
RX_WCDMA_1900_LNA_OUT
DNI
LGE Internal Use Only
L1015
2.4n
L1016
C1076
12n
1.8p
FL1006
6 1
ANT RX
3
TX
2 9
GND1 GND6
C1091
C1089
4 8
GND2 GND5
1p
10n
5 7
GND3 GND4
Band II
TP3
PDET_IN
R1018
110
VBAT
2.7p
RX_WCDMA_900_P
L1029
C1103
C1104
DNI 15n
2.7p
RX_WCDMA_900_M
L1031
1
RX1
8
RX2
L1034
3
TX
3.9n
9
GND5
C1116 DNI
7
GND4 1.2p C1117
Bias
WCDMA RX 2100 LNA Circuit
L1017
1.2n
C1084
L1019
1.2n
8.2p
C1086
2140MHz
DNI
RX_WCDMA_HB
VBAT
C1081 C1082
U1002
2.2u 330p
11
PGND
10 1
VCC2 VCC1
9 2
RFOUT RFIN
8 3
CPL_IN VMODE_1
7 4
GND VMODE_0
6 5
CPL_OUT VEN
R1017
51
R1019
8dB
110
2
C1096 C1097
2.2u 680p
1
U1003
11
PGND
10 1
VCC2 VCC1
9 2
RFOUT RFIN
8 3
CPL_IN VMODE_1
7 4
GND VMODE_0
6 5
CPL_OUT VEN
C1109
FL1003
1 3
IN OUT
DNI
4
_OUT C1083
G1 G3
2 5
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3. TROUBLE SHOOTING
C1080
Close to pin1
330p
FL1004
22 22
4 1
OUT IN
G3 G2 G1
L1023
3G_PAM_MODE
C1087
5 3 2
PA_R0
C1200
PA_ON0
DNI
C1090
100
C1093 C1094
100p 100p
C1095
4dB attunation
680p
R1020
22
FL1008
L1102
C1101 1n
4 1
OUT IN
G3 G2 G1
3G_PAM_MODE
5 3 2
DNI C1107
PA_R0
PA_ON1
C1110
100p 100p
L1018
WB2100_MIX_INP
1.5n
W2100 RX(2110 - 2170 MHz)
L1024
WB2100_MIX_INM
1.5n
TP5
Only for training and service purposes
W1900_W2100_TX_OUT
C1088
100
33p
W850_W900_TX_OUT
C1108
DNI