LG LG-D618 - Your Home Screen; Customizing Your Home Screen; Returning to Recent Applications

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
Chenck ANT_Logic Refer to 3.4
Check TP1
Over 21 dBm?
Check TP2
Over 21 dBm?
Check TP3
Over ‐3dBm?
RF Tx Level is OK
Yes
No
Check WTR2605
Check FL1600
Yes
No
Check PAM
Yes
No
L1607
33n
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
VCC
VENLB
GND1
VMODE
RFOUTLB
RFOUTHB
GND6
GND5
CPLIN
PGND
+VPA0
+VPA_BATT0
1n
C1626
10u
C1628
C1629 10u
1n
C1631
33pC1638
C1642
DNI
C1639 33p
C1646
33p
C1634
1.8p
DNI
C1641
C1637 12p
DNI
C1640
C1645
1n
1n
C1644
C1643
1n
C1627
100n
C1630
100n
C1636 2n
C1635 39p
PA0_R_0
PA0_ON_2
PA0_ON_3
WTR_PDET_IN
WTR_TX2_OUT
WTR_PRX_MB_1_IN
Shunt cap must be<=33pF
guarantee LNA gain setting time
Place matching components near WTR
B1
B1, B8
B1
B8
TP3
TP2