LG E475F Service Manual page 45

ANT1001 ANT1005
1
1
HJ-ICT-06Y
HJ-ICT-06Y
C1202
100p
C1203
100p
DCS_PCS_TX
DCS(1710-1785 MHz)
PCS(1850-1910 MHz)
GSM850_GSM900_TX
GSM850(824-849MHz)
GSM900(880-915MHz)
LGE Internal Use Only
ANT1002
1
HJ-ICT-06Y
C1007
1.8n
C1127
C1003
1p
DNI
1
GND1
2
GND2
3
GND3
4
GND4
5
GND5
6
GND6
7
GND7
8
GND8
29
PGND1
30
PGND2
31
PGND3
32
PGND4
33
PGND5
34
PGND6
TP2
R1011
1 2
47
7dB
1 2
R1006
75
11dB
C1201
DNI
1 2
TP3
Schematic of GSM/DCS/PCS Tx Block
C1001 100p SW1000
1
ANT
G3
C1004
DNI 3
PGND16
PGND15
PGND14
PGND13
GND10
U1001
VRAMP
MODE
PGND12
PGND11
PGND10
2mm
2 2
C1118 C1039
1n 100p
1 1
C1125 C1124
DNI DNI
- 45 - Copyright © 2013 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
TP1
C1002
2
COMMON
6.8p
1
G4
C1005
L1001
4
DNI
2
W850_W900_RTX
W1900_W2100_RTX
44
43
42
41
22
21
TRX3
20
TRX2
19
TRX1
18
17
TXEN
16
15
GND9
40
39
38
VBAT
C1038
10u
ANT_SEL1
ANT_SEL2
Only for training and service purposes
15n
C1022 1.2n
L1004
4.7n
C1046
100p
1
L1009
8.2n
2