LG U300 Service Manual page 79

4. TROUBLE SHOOTING
ANT100 ANT101 ANT102
SW100
C199
G2
ANT
G1
6.8p
KMS-512
C101
L104
0.75p
8.2nH
TP2
C151
33p
L123
R126
22nH
0
FL104
SFXG50KC701
8 11
ANT TX_1950MHZ
5 3
RX_2140MHZ GND3
4
GND4
1 6
GND1 GND5
2 7
GND2 GND6
9
GND7
13 10
PGND GND8
12
GND9
C166
12p
TP1
RF
C106
33p
23
22
21
20
19
18
17
16
15
14
VREG_W_PA
IS100
ESI-3EAR1.950G01-T
C157
OUT IN
GND5 GND1
18p
GND4 GND2
GND3 L127
0.5p
PA_ON
VREG_RFTX_2.85V
- 80 -
L101
7.5nH
C102 C103
0.1u 10p
R101
0 R102
0 R103
0
1
GND6 GND1
2
ANT RX2
3
GND5 RX3
4
TRX RX4
U100
5
GND4 RX1
6
NC9 GND2
7
CXG1190AEQ
NC8 NC1
8
NC7 NC2
9
NC6 NC3
10
NC5 NC4
TP3
RF5198
C150
SMPY0009601
1000p
C153
L124
4.7u
8.2nH
12
VCC21 RF_IN
11
VCC22 GND
U104
10
VCC23 VMODE
9
RF_OUT VREG
C158
NA
R1295.1K
R130
10K
TR100
UMC4N
VREG_RFRX_0_2.85V
ANT_SEL0
ANT_SEL1
ANT_SEL2
VREG_RFTX_2.85V
C154
1
2
8.2p
3
4
C159
0.01u
TP4
HDET1
R131 C165
15K 0.01u