LG -D618 Service Manual page 150

< 1-1-4-2_TRX_WCDMA_B1_B2_B5_B8 >
TRX B2
C1606
TX_MODULE_TRX_1
TRX B5/ RX GSM 850
C1620
TX_MODULE_TRX_2
TRX B1
C1632 33p
TX_MODULE_TRX_3
TRX B8/RX GSM 900
C1647 3.3n
TX_MODULE_TRX_4
LGE Internal Use Only
Rev_0.1
Place matching components near WTR
B2
FL1604
2.2n C1608 3.9n C1609 3.9n
C1607 33p 6 1
WTR_PRX_MB_2_IN
ANT RX
C1610 6.2n
3
TX
2 9
GND1 GND6
4 8
L1601
GND2 GND5 C1614
5 7 DNI
GND3 GND4 DNI
C1619
DNI Shunt cap must be<=33pF
guarantee LNA gain setting time
Place matching components near WTR
B5, G850
FL1601
3.3n
C1621 33p C1622 1.5n C1623 15n
6 1 WTR_PRX_LB_2_IN
ANT RX
C1624
3
TX
L1602
8.2n 2 9
GND1 GND6
4 8 L1603
GND2 GND5 L1605
5 7
DNI
GND3 GND4
DNI
EAM62954601
C1625
Shunt cap must be<=33pF
DNI
guarantee LNA gain setting time
Place matching components near WTR
FL1602
C1 22p
6 1 C1634 C1635 39p
1.8p WTR_PRX_MB_1_IN
ANT RX
B1
C1636 2n
3
B1
TX
L1999
2 9
GND1 GND6
1.8n
4 8 C1640
GND2 GND5
5 7 DNI
C1641
GND3 GND4 L1607
DNI
33n
EAM62954501
Shunt cap must be<=33pF
C1646
guarantee LNA gain setting time
33p
Place matching components near WTR
B8, G900
FL1603 C1649 3.9n
C1650 15n
C1648 47p
6 1
WTR_PRX_LB_1_IN
ANT RX
C1651 3n
3
TX
L1608 2 9
C1652
GND1 GND6 C1653
L1609
6.8n 4 8
DNI
GND2 GND5 15n
DNI
5 7
GND3 GND4
EAM62990301
C1654
Shunt cap must be<=33pF
DNI
guarantee LNA gain setting time
+VPA_BATT0
1 6
VBATT GND1
16 7
GND6 U1600 GND2
15 8
R1606 51
C1611 4.3n CPLIN CPLOUT
SKY77742-21
14 9
RFOUTHB GND3
TOL=0.01
17
PGND
C1615
1p
5.6n
L1604
1.5p
+VPA_BATT0
1 6
VBATT GND1
16 7
GND6 U1601 GND2
15 8
CPLIN CPLOUT
SKY77742-21
C1637 12p 14 9
RFOUTHB GND3
17
PGND
RF LINE ARTWOKR CAUSION_COMMON PATH
- 150 -
Place matching components near WTR
C1612 33p
WTR_TX3_OUT
PA0_ON_0 B2
B2, B5
PA0_ON_1 C1613
B5
PA0_R_0 DNI
+VPA0
PA LOGIC B2/B5
POWER MODE
SHUT DOWN
STAND-BY
B5 HPM
B5 LPM
B2 HPM
B2 LPM
Place matching components near WTR
C1638 33p C1639 33p
WTR_TX2_OUT
PA0_ON_2 B1
B1, B8
PA0_ON_3
B8 C1642
PA0_R_0
DNI
WTR_PDET_IN
PA LOGIC B1/B8
POWER MODE PA_ON_B8 PA_ON_B1_B4 PA0_R0
+VPA0 SHUT DOWN L L L
STAND-BY L/H L/H -
B8 HPM H L L
B8 LPM H L H
B1 HPM L H L
B1 LPM L H H
VREG_L12_1V8
PAM THERM
R1602
TOL=0.01
100K
PA_THERM_0
for W7 series
Copyright © 2014 LG Electronics. Inc. All right reserved.
6. CIRCUIT DIAGRAM
PA_ON_B5 PA_ON_B2 PA0_R0
L L L
L/H L/H -
H L L
H L H
L H L
L H H
Only for training and service purposes