LG -E450 Service Manual page 70

TP3
C153
5.6p
RX_W1900_W2100_INN
C154
DNI
L119
C155 DNI
4.7n
B1
C158
DNI
1 RX_W1900_W2100_INP
RX1
5.6p
8 C161
RX2
REV.1.0
C163
3
TX
9
GND5
7
GND4 L166
8.2n
TP2(RF OUT)
LGE Internal Use Only
TP2(RF OUT)
TP3
3.3p
L122
REV.1.0
DNI
TP1(RF IN)
U103
PA
TOP Side
+3V4_VWPAM_MTK
C193 C157
2.2u 0.1u
C159 C160
B1
1n 2.2u
U103
11
PGND
10 1
VCC VBAT
9 2
RF_OUT RF_IN
8 3
PA_R1
CPL_IN VMODE1
7 4
PA_R0
GND VMODE0
6 5
PA_ON_W1900_2100
CPL_OUT VEN
R107 R108
PDET
27 27
R109
36
- 70 - Copyright © 2013 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
VBATT
W1900_W2100 TX
L173 1.2n
C199
0.5p
TP1(RF IN)
Only for training and service purposes
W1900_2100_TX_IN