LG lg530g Service Manual page 56

TP2
TP3
GSM850/EGSM TX
DCS/PCS TX
W850/GSM850 Rx_Pin21
W1900_Pin22
EGSM RX
PCN RX
PCS RX
LGE Internal Use Only
L101 DNI
L103
VREG_MSMP_2.6V
TP1
ANT_SEL[2]
ANT_SEL[1]
ANT_SEL[0]
ANTENNA SWITCH MODULE LOGIC
ANT_SEL0 ANT_SEL1
1
1
0
0
0
0
0
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4. TROUBLE SHOOTING
GSM with FEM
TP3
C102
100p
22n
SW101 C104
2
ANT COMMON
GND
1
G3 G4
L106
3 4
DNI
C106 C107
1u 33p
TP1
R100 1K
R101 1K
R102 1K
ANT_SEL2
1 0
0 0
1 0
0 0
1 1
0 0
1 0
Copyright © 2012 LG Electronics. Inc. All right reserved.
TP2
WCDMA_1900
WCDMA_850
33p
FL100
12
ANT
L107
13 5
GND4 GSM850RX1
14 4
VDD GSM900RX2
15n
15 3
VC3 GSM900RX1
16 2
VC2 GSM1800/1900RX2
17 1
VC1 GSM1800/1900RX1
TX_HB TX_LB
ANT_SEL3
0
0
1
1
0
0
0
Only for training and service purposes