LG -E615 Service Manual page 51

SW1002
G1 L1001
G2 ANT
1n
R1001
C1001
DNI
DNI
TP1
2mm
VBAT
ANT_SEL2
ANT_SEL1
C1013
C1014
22u
ANT_SEL0
47p
ANT_SEL3
R1002
GSM_PA_RAMP
2.2K
C1028
39p
GSM_TX
GSM850(824-849MHz)
GSM900(880-915MHz)
DCS_PCS_TX
DCS(1710-1785 MHz)
PCS(1850-1910 MHz)
LGE Internal Use Only
L1004
100n
GND TRX2
7 13
VBATT TRX1
18 12
GPCTRL2 RX2
17 11
GPCTRL1 RX1
19 10
GPCTRL0 GND7
U1002
20 16
TX_EN GND4
21 6
VRAMP GND3
22 9
PGND1 GND8
23 2
PGND2 GND1
24 1
GND2
8
R1004
C1104 100p
91
11dB
R1009 C1105 33p
33
5dB
Schematic of GSM/DCS/PCS Rx Block
- 51 -
4. TROUBLE SHOOTING
GSM Quad
WCDMA_LB_RTX
WCDMA_HB_RTX
FL1001
C1016
1
1842_5/1960MHz 1960MHz_1
1960MHz_2
1.5n
4
GND5 1842_5MHz_1
L1008 2
GND1 1842_5MHz_2
4.3n 3
GND2
5
GND3 GND4
FL1002
C1035
1 IN 9
O1_1
33p
8
O1_2
7
O2_1
L1017
GND O2_2
4 6
10n
2 3 5 10
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
L1005
RX_PCS_P
5.6n
10n L1006
PCS(1930-1990 MHz)
4.7n
C1015
L1007
8
9
RX_PCS_M
5.6n
6
L1009
7 3.3n
RX_DCS_P
10
C1029 L1010
DCS(1805-1880 MHz)
10n 7.5n
L1011
3.3n
RX_DCS_M
C1030
RX_GSM_900_P
2.7p
L1012 L1013
82n
15n
GSM(925-960 MHz)
C1036
RX_GSM_900_M
2.7p
RX_GSM_850_P
C1037
2.2p
L1018 L1019
GSM(869-894 MHz)
82n 18n
RX_GSM_850_M
C1039
2.2p
TP2