Checking Ant. Sw Module Block - LG KU800 Service Manual

4.4 Checking Ant. SW Module Block

ANT_SEL0
VREG_RFRX_0_2.85V
ANT_SEL0
ANT_SEL1
ANT_SEL1
smd_0603h_3_r
Schematic of the Antenna Switch Block
smd_0603h_3_r
C1004 C1005
C1007 C1008
10p 0.1u
100p 100p
smd_0603h_3_r smd_0603h_3_r
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4. TROUBLE SHOOTING
TP1
19
VDD GSM850_RX1
GSM850_RX2
18
CTRL1 GSM900_RX1
22
CTRL2 GSM900_RX2
GSM1800_RX1
GSM1800_RX2
10
GND1 GSM1900_RX1
12
GND2 GSM1900_RX2
13
GND3 WCDMA2100
15
GND4
17
GND5 DGM085M01
20
GND6
21
GND7 GSM850900_TX
23
GND8 GSM18001900_TX
FEM
7
8
5
6
1
2
3
4
9
16
14
ANT_SEL0
TP1
ANT_SEL1