4. TROUBLE SHOOTING
- 83 -
Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
TOP Side
U102
PA
TP1(RF IN)
TP2(RF OUT)
TP3
L167
22n
C199
0.5p
C193
2.2u
C160
2.2u
C157
0.1u
U103
PGND
11
VEN
5
RF_OUT
9
RF_IN
2
VBAT
1
VCC
10
GND
7
VMODE1
3
CPL_IN
8
VMODE0
4
CPL_OUT
6
L119
4.7n
5.6p
C161
DNI
C158
C198
0.5p
FL103
7
5
8
4
9
2
3
1
6
ANT
RX1
TX
GND1
GND5
GND2
RX2
GND3
GND4
U102
6
4
8
3
7
10
1
2
9
5
11
PGND
VEN
RF_OUT
RF_IN
VBAT
VCC
GND
VMODE1
CPL_IN
VMODE0
CPL_OUT
L173
1.2n
1n
C142
L115
DNI
DNI
C154
C153
5.6p
DNI
C155
L116
6.2n
L114
100p
DNI
L148
DNI
L113
C162
DNI
100p
L111
L172
1.2n
L120
100p
C146
33p
L166
8.2n
C164
4.7n
36
R109
27
R108
27
R107
22n
L112
49.9
R104
C141
0.1u
2.2u
C143
C159
1n
C163
3.3p
FL102
7
5
8
4
9
2
3
1
6
ANT
RX1
TX
GND1
GND5
GND2
RX2
GND3
GND4
L169
2.4n
DNI
L122
W850_W900_TRX
RX_W850_W900_INN
PDET
RX_W850_W900_INP
VBATT
VBATT
PA_ON_W850_W900
RX_W1900_W2100_INP
W1900_2100_TRX
RX_W1900_W2100_INN
PA_R1
PA_R1
PA_R0
PA_R0
+3V4_VWPAM_MTK
+3V4_VWPAM_MTK
W1900_2100_TX_IN
W850_W900_TX_IN
PA_ON_W1900_2100
B8
B1
B8
B1
W850_W900 TX
W1900_W2100 TX
TP3
TP2(RF OUT)
TP1(RF IN)