Table of Contents
Advertisement
ANT1002
1
HJ-ICT-06Y
C1001
100p
C1007
1.8n
C1127
C1003
1p
DNI
1
GND1
2
GND2
3
GND3
4
GND4
5
GND5
6
U1001
GND6
7
GND7
8
GND8
29
PGND1
30
PGND2
31
PGND3
32
PGND4
33
PGND5
34
PGND6
LGE Internal Use Only
TP1
SW1000
C1002
1
2
ANT
COMMON
6.8p
1
G3
G4
C1004
C1005
DNI
3
4
DNI
2
W850_W900_RTX
W1900_W2100_RTX
44
PGND16
43
PGND15
42
PGND14
41
PGND13
22
GND10
21
TRX3
20
TRX2
19
TRX1
18
VRAMP
17
TXEN
16
MODE
15
GND9
40
PGND12
39
PGND11
38
PGND10
Schematic of GSM/DCS/PCS Rx Block
Set the phone Rx is On
Check TP1 Signal exist ?
Yes
Check TP2 Signal exist ?
Yes
Change the board
L1001
15n
FL1002
C1022
1.2n
1
GSM1800/1900_IN
2
GND1
RX_PCS_M
3
GND2
L1004
4.7n
4
GND3
FL1001
C1046
100p
1
GSM850/900_IN
2
GND1
1
3
GND2
L1009
8.2n
4
GND3
2
No
Check RF Switch (M/S)
No
- 48 -
3. TROUBLE SHOOTING
C1013
RX_PCS_P
1.2n
L1003
9
DNI
GSM1900_Bal_OUT2
C1024
1.2n
8
GSM1900_Bal_OUT1
7.5n
C1028
7
GSM1800_Bal_OUT2
6
GSM1800_Bal_OUT1
L1006
DNI
C1040
7.5n
C1041
10p
L1007
DNI
9
GSM900_Bal_OUT2
C1048
10p
8
GSM900_Bal_OUT1
L1035
8.2n
7
GSM850_Bal_OUT2
6
GSM850_Bal_OUT1
L1012
10n
L1036
8.2n
Check Tx Module
Refer to 3.4
Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TP2
L1002
PCS(1930-1990 MHz)
2n
RX_DCS_P
L1005
DCS(1805-1880 MHz)
15n
RX_DCS_M
RX_GSM_900_P
GSM(925-960 MHz)
L1008
15n
RX_GSM_900_M
RX_GSM_850_P
L1013
GSM(869-894 MHz)
DNI
RX_GSM_850_M
Advertisement
Table of Contents
Troubleshooting
