LG -E730 Service Manual page 98

SW1000
SW1001
2
G2 ANT ANT COMMON
1
G1
G3 G4
Height: 1.35mm
2 pi connector 3 4
VREG_RF_SW_2.7V
FB1001
ANT_SEL3
ANT_SEL2
ANT_SEL1
ANT_SEL0
GSM850/900 TX
DCS/PCS TX
GSM850 RX
EGSM RX
DCS RX
PCS RX
UMTS B1/B2
UMTS B8/B5
UMTS B4
LGE Internal Use Only
TP1
L1057 1.8n
Dual Rx Module
L1001 L1002
1 & 8 band: EAT61393401
DNI 56n
1 & 5 band: EAT61393101
120
C1020
1n
R1014 1K
R1016 1K
R1017 1K
R1018 1K
Question to vendor(?)
ANTENNA S/W LOGIC
ANT_SEL0 ANT_SEL1 ANT_SEL2 ANT_SEL3
HIGH LOW LOW HIGH
LOW HIGH LOW LOW
LOW LOW HIGH LOW
HIGH LOW LOW LOW
HIGH LOW HIGH LOW
HIGH HIGH HIGH LOW
HIGH HIGH LOW LOW
HIGH LOW LOW LOW
HIGH LOW HIGH HIGH
GSM_LOW
GSM_HIGH
PA_W900_TX
PA_W2100_TX
GSM850RX2
23
ANT GSM850RX1
1 22
GND4 GND8
2 21
VDD GSM1800/1900RX2
3 20
GSM1800/1900RX1
19
VC4
4
VC3 GND7
5 18
VC2 GND6
6 17
VC1 GND5
7 16
GND3 BAND1RX2
8 15
UMTS2
9
TP2
L1021
22n
12n
- 98 - Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
PRX_G850_INP
L1007
L1008
GSM850(869 - 894 MHz)
DNI
12n
PRX_G850_INM
C1024 39p
PRX_DCS_PCS_INM
DCS(1805-1880 MHz)
L1011 L1012
3.9n DNI
PCS(1930-1990 MHz)
C1030 39p
PRX_DCS_PCS_INP
L1018
L1019
10n TP2
DNI
W2100 RX(2110 - 2170 MHz)
Apply Common PAD
PRX_W900_INM
L1022
W900 GSM900 RX(925 - 960 MHz)
PRX_W900_INP
Only for training and service purposes
PRX_W2100_INM
PRX_W2100_INP