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
+VPA_BATT0
SKY77742-21
U1600
17
15
13
16
14
10
5
6
4
12
7
3
8
11
1
9
2
RFIN
GND3
VBATT
GND4
CPLOUT
VENH
B
GND2
VC
C
VENL
B
GND1
VMODE
RFOUTL
B
RFOUTHB
GND6
GND5
CPLIN
PGND
+VPA0
C1602
10u
1n
C1600
10
u
C1603
1n
C1605
C1610
6.2n
3.9n
C1608
C1609
3.9n
C1615
1p
C1611
4.3n
33p
C1612
C1604
100n
100
n
C1601
1n
C1616
C1617
1n
C1618
1n
C1613
DNI
L1601
DNI
DNI
C1619
DNI
C1614
TOL=0.01
R1606
51
PA0_R_0
PA0_ON_0
PA0_ON_1
WTR_PRX_MB_2_IN
WTR_TX3_OUT
B2
B5
Place matching components near WTR
Place matching components near WTR
guarantee LNA gain setting time
Shunt cap must be<=33pF
B2
B2, B5
TP3
TP2
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TP2
TP3