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3. TROUBLE SHOOTING
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Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
0
R1104
4.7u
C1113
C1116
10u
22p
C1112
100p
C1137
C1101
2.2n
DNI
R1105
+VPWR
L1109
0.5p
100p
C1120
100p
C1121
100p
C1122
22
p
C1123
100p
C1115
100p
C1119
C1103
2.2n
SKY77573-31
U1100
TRX1
24
GND3
3
VCC1
4
VCC2
5
GND4
6
GND17
25
GND1
1
GND11
13
GND14
17
GND13
16
GND12
14
GND9
11
GND8
10
GND6
8
RX
1
18
GND2
2
AN
T
15
SPDT_IN
19
SPDT_OU
T
21
RX
2
20
GND5
7
GND10
12
GND7
9
GND15
22
GND16
23
NC1
33
VBATT
32
GND20
31
TRX4
30
GND19
29
TRX3
28
GND18
27
TRX2
26
NC2
34
RF_I
N
36
SPD
T
35
SW
0
38
SW
1
37
HB_E
N
39
LB_E
N
40
MODE
0
41
MODE
1
42
PGND
43
10n
C1117
22
p
C1124
100p
C1102
DNI
L1100
L110
8
0.5p
DNI
R1106
2.7n
C1104
L1101
100n
PA0_R_0
WTR_TX1_OUT
ANT0_SW_SEL_3
ANT0_SW_SEL_2
ANT0_SW_SEL_1
ANT0_SW_SEL_0
TX_MODULE_TRX_4
TX_MODULE_TRX_1
PA0_R_1
SPDT_SEL
Rev.1.0
RX_G1900
RX_G1800
TP2
TP3
TP4
TP5
TP6
TP1