4. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
MBV62422401
ANT1002
FEED
100p
C1127
MBV62422401
ANT1001
FEED
FL1001
4
3
2
1
5
10
6
7
8
9
GSM900_Bal_OUT2
GSM900_Bal_OUT1
GSM850_Bal_OUT2
GSM850_Bal_OUT1
GND5
GND4
GSM850/900_IN
GND1
GND2
GND3
FL1002
4
3
2
1
5
10
6
7
8
9
GSM1900_Bal_OUT2
GSM1900_Bal_OUT1
GSM1800_Bal_OUT2
GSM1800_Bal_OUT1
GND5
GND4
GSM1800/1900_IN
GND1
GND2
GND3
15n
L1001
C1128
100p
100p
C1046
L1013
DNI
C1005
100n
C1010
0.75p
DNI
C1007
L1036 8.2n
L1035 8.2n
10n
L1012
15n
L1008
C1048 10p
10p
C1041
DNI
L1007
8.2p
C1040
L1006
DNI
8.2n
L1009
C1024 1.5n
C1028
8.2p
C1013 1.5n
3.9n
L1005
U1001
16
15
14
13
12
11
10
17
9
8
7
6
4
3
28
1
44
43
42
41
40
39
38
37
36
35
32
33
34
24
23
22
29
30
31
18
21
25
20
26
19
27
5
2
GND2
GND5
GND13
TRX1
AN
T
TRX2
GND12
TRX3
VRAMP
PGND3
PGND2
PGND1
GND10
TRX4
GND11
PGND6
PGND5
PGND4
PGND7 PGND8 PGND9
PGND10
PGND11
PGND12
PGND13
PGND14
PGND15
PGND16
GND1
GND14
GND3
GND4
GND6
GND7
GND8
TX_HB_I
N
TXEN
TX_LB_I
N
BS2 BS1 VBAT
T
VC
C
GND9
MODE
L1037
8.2n
C1003
DNI
L1003
DNI
L1002
2.2n
L1004
4.7n
C1022 1.2n
SW1000
4
3
2
1
ANT
COMMON
G3
G4
C1002 6.8p
100p
C1001
W850_W900_RTX
W1900_W2100_RTX
GPS_IN
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
GSM(869-894 MHz)
REV_1.1
PCS(1930-1990 MHz)
DCS(1805-1880 MHz)
GSM(925-960 MHz)
TP2
TP1
4.6.4 Checking RF Rx Block
Schematic of GSM/DCS/PCS Rx Block
TP2
TP1