LG LG-E400 - Page 67

4. TROUBLE SHOOTING
- 67 -
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
C137
DNI
U102
6 5
7 4
8 3
9 2
10 1
11
PGND
VCC1VCC2
RFINRFOUT
VBPISO
VMODEGND
VENCPL
U103
6 5
7 4
8 3
9 2
10 1
11
PGND
VCC1VCC2
RFINRFOUT
VBPISO
VMODEGND
VENCPL
L1031
DNI
C144
3.3p
2.2u
C187
C181
3.3n
C199
22n
C183
1p
1950MHz
FL102
5 3 2
4 1
INOUT
G1G2G3
C138
6.8n
C174
2.2u
897.5MHz
FL104
5 3 2
4 1
INOUT
G1G2G3
C197
DNI
330p
C172
680p
C186
n7
.
2
591C
871
C
n7.
2
DNI
L116
FL2
75
8
4 9
2
3
16
ANT RX1
TX
GND1
GND5GND2
RX2
GND3 GND4
110
R123
110
R124
121L
n3
221L
p72
0901C
p
81
FL1008
1950MHz,2140MHz
75
84
92
3
16
ANT RX
TX
GND1 GND6
GND2 GND5
GND3 GND4
5
1
1
L
n4.2
n9
.
3
9701C
L1021
12n
C182
3.9n
2
1
1L
n
0
1
9
2
1
L
n7.2
C198
0.75p
C180
1p
691C
I
ND
100p
C184
n01
41
1
L
L1035
1.5n
C121
DNI
C188
680p
VBAT
100p
C185
C175
330p
VBAT
R122
51
33p
C194
9.94
621R
100p
C201
100p
C200
DNI
C1081
GND
PA_ON0
PA_R0
PA_R0
RX_WCDMA_HB
PDET_IN
RX_WCDMA_900_P
RX_WCDMA_900_M
WCDMA_850_900_TX_OUT
WCDMA_1900_2100_TX_OUT
WCDMA_2100_RTX
WCDMA_900_RTX
PA_ON1
8dB
Close to pin1
Band I
Band VIII
TP3
TP1
TP2