LG LG-E400 - Video Camera

4. TROUBLE SHOOTING
- 79 -
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Schematic of GSM/DCS/PCS Rx Block
L1007
15n
L1006
3.3n
111C
n
2
.
1
R100
68n
SW100
43
2
1
ANT COMMON
G3 G4
1201C
n2.2
4001C
p2.2
U101
24
17
18
19
13
12
6
5 3
1
2
1620
51 41
4
22
11
10
9
8
7
23
21
TX_EN
PGND1
GND
GND2
GND3
RX1
RX2
VRAMP
5
D
NG
T
NA
6
D
NG
GPCTRL0
GND7
GND8
GND1
B
L
_NIFR
BH_NIFR
GND4
TRX1
TRX2
GPCTRL1
VBATT
GPCTRL2
PGND2
FL1001
10532
64
7
8
91
IN
O1_1
O1_2
O2_1
C_C5 O2_2
1G_C
2G_C 3G
_
C
4G
_
C
FL1002
10532
64
7
8
91
IN
O1_1
O1_2
O2_1
GND O2_2
1G_C 2G_C 3G
_C
4G_C
L1012
9.1n
L1011
0.75p
2501C
n9.3
2401C
n9.3
C109
100p
C1091
56p
p2.2
6101C
L1010
DNI
0.75p
L1014
C1092
22p
51
1
C
IN
D
DNI
C1013
L1008
DNI
1401C
n8.1
DNI
L1003
3201C
p3.3p3.3
5201C
03
1
2
11
R
47
R113
0
31
411R
75
R116
18n
L1005
5.6n
C1040
5.6n
C1036
C116
DNI
19
5
11
R
19
711R
RX_GSM_850_M
RX_GSM_850_P
RX_GSM_900_M
RX_GSM_900_P
RX_DCS_M
RX_DCS_P
RX_PCS_M
RX_PCS_P
WCDMA_2100_RTX
WCDMA_900_RTX
GSM(925-960 MHz)
Murata
EAM62492501
11dB
DCS(1805-1880 MHz)
PCS(1930-1990 MHz)
GSM(869-894 MHz)
7dB
GSM850(824-849MHz)
GSM900(880-915MHz)
TP1