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
L1607
33n
FL1602
EAM62954501
7
5
8
4
9
2
3
1
6
ANT
RX
TX
GND1
GND6
GND2
GND5
GND3
GND4
FL1603
EAM62990301
7
5
8
4
9
2
3
1
6
ANT
RX
TX
GND1
GND6
GND2
GND5
GND3
GND4
C1649
3.9n
L1999
1.8n
C1646
33p
L1608
6.8n
L1609
DNI
C1634
1.8p
C1648
47p
C1647
3.3n
DNI
C1641
C1653
15n
C1651
3n
DNI
C1652
C1637
12p
DNI
C1640
33p
C1632
C1650
15n
C1636
2n
DNI
C1654
C1
22p
C1635
39p
TX_MODULE_TRX_4
WTR_PRX_LB_1_IN
WTR_PRX_MB_1_IN
TX_MODULE_TRX_3
B1
guarantee LNA gain setting time
Shunt cap must be<=33pF
Shunt cap must be<=33pF
guarantee LNA gain setting time
Place matching components near WTR
Place matching components near WTR
B8, G900
B1
TP2
SKY77742-21
U1601
17
15
13
16
14
10
5
6
4
12
7
3
8
11
1
9
2
RFIN
GND3
VBATT
GND4
CPLOUT
VENHB
GND2
VC
C
VENLB
GND1
VMOD
E
RFOUTL
B
RFOUTHB
GND6
GND5
CPLIN
PGND
+VPA0
C1629
10
u
1n
C1631
33p
C1638
C1642
DNI
C1639
33p
C1645
1n
1n
C164
4
C164
3
1n
C1630
100n
PA0_R_0
PA0_ON_2
PA0_ON_3
WTR_PDET_IN
WTR_TX2_OUT
B1, B8
B1
B8
TP3