LG LG-E400 - Page 76

4. TROUBLE SHOOTING
- 76 -
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
L1006
3.3n
C118
100p
111C
n
2
.
1
R100
68n
C1043
22u
C1044
47p
SW100
43
2
1
ANT COMMON
G3 G4
12
01
C
n2
.
2
U101
24
17
18
19
13
12
6
5 3
1
2
1620
51 4
1
4
22
11
10
9
8
7
23
21
TX_EN
PGND1
GND
GND2
GND3
RX1
RX2
VRAMP
5DNG
T
NA
6
D
N
G
GPCTRL0
GND7
GND8
GND1
B
L
_NIFR
B
H
_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
5401C p001
p00
1
740
1
C
840
1
C p00
1
p
00
11
50
1
C
C109
100p
ANT100
1
C1091
56p
2.2K
R107
C1092
22p
0
2
1
C
p
00
1
ANT105
1
3001C
IND
511C
IND
1
01
R
IND
L102
100p
1
4
0
1C
n
8
.1
39p
C1024
031
2
11
R
47
R113
0
31
4
11
R
VBAT
75
R116
C116
DNI
1
9
5
11
R
1
9
7
11
R
GSM_PA_RAMP
ANT_SEL2
ANT_SEL1
GSM_TX
DCS_PCS_TX
ANT_SEL3
WCDMA_2100_RTX
WCDMA_900_RTX
ANT_SEL0
Murata
EAM62492501
2mm
11dB
7dB
8
0
6
1
PCS(1850-1910 MHz)
DCS(1710-1785 MHz)
GSM850(824-849MHz)
GSM900(880-915MHz)
TP1
TP2
TP3
Schematic of GSM/DCS/PCS Tx Block