LG -E415g Service Manual page 57

ANT1005
ANT1002
1 1
2
HJ-ICT-06Y
HJ-ICT-06Y
C1007
1
100p
C1010 C1003
C1127
100p DNI
0.5p
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
LGE Internal Use Only
SW1000
C1001 100p
C1002 6.8p
1 ANT COMMON 2
G3 G4
C1004
DNI C1005
3 4
DNI
TP1
44
PGND16
43
PGND15
42
PGND14
41
PGND13
22
GND10
21
TRX3
U1001 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
1
L1001
15n
2
W850_W900_RTX
FL1002
W1900_W2100_RTX
C1022 1.2n
1
GSM1800/1900_IN GSM1900_Bal_OUT2
2
GND1 GSM1900_Bal_OUT1
3
GND2 GSM1800_Bal_OUT2
L1004
4
4.7n
GND3 GSM1800_Bal_OUT1
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
Check Tx Module
Refer to 4.4
- 57 - Copyright © 2013 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
TP2
C1013 1.2n
L1002
L1003
PCS(1930-1990 MHz)
9
DNI
2n
C1024 1.2n
8
7
C1028 7.5n
6
L1006
DCS(1805-1880 MHz)
L1005
DNI
15n
C1040 7.5n
C1041 10p
L1007
L1008 GSM(925-960 MHz)
DNI
9
15n
GSM900_Bal_OUT2
C1048 10p
8
GSM900_Bal_OUT1
L1035 8.2n
7
GSM850_Bal_OUT2
6
GSM850_Bal_OUT1 L1012
L1013
GSM(869-894 MHz)
10n
DNI
L1036 8.2n
Only for training and service purposes
RX_PCS_P
RX_PCS_M
RX_DCS_P
RX_DCS_M
RX_GSM_900_P
RX_GSM_900_M
RX_GSM_850_P
RX_GSM_850_M