Checking Rf Rx Block - LG P705 Service Manual

4.6.4 Checking RF Rx Block

SW1000
G1
G2
GSM_PA_RAMP
GSM_HB_TX
DCS(1710-1785 MHz)
PCS(1850-1910 MHz)
GSM_LB_TX
GSM850(824-849MHz)
GSM900(880-915MHz)
2mm
LGE Internal Use Only
VBAT
C1033
10u
C1106
ANT
2.7n
L1042 L1043
DNI DNI
0603
R1000
2.2K
C1024
39p
R1003
47
7dB
R1006
33
7.4dB
0603
C1034
0603
47p
1n
C1049
1n
C1050
TP2
SW1001 C1094
2
ANT COMMON
1
1.8n
G3 G4
3 4
TP1
1
HB_IN
2
GND1
3
LB_IN
4
VAPC
5
VBATT
6
BS2
7
BS1
8
TXEN_
FEM
29
PGND1
30
PGND2
31
PGND3
32
PGND4
33
PGND5
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34
PGND6
4. TROUBLE SHOOTING
TP1
C1009 100p
L1001
L1002
DNI 100n
44
PGND16
43
PGND15
42
PGND14
41
PGND13
22
GND5
21
GND4
U1001
20
GND3
19
GND2
18
ANT
17
WCDMA3
16
WCDMA2
15
WCDMA1
40
PGND12
Only for training and service purposes
39
PGND11
38
PGND10
WCDMA_H
WCDMA_L
L1000
DNI
C1013
1
C1018
L1005
DNI