LG -P350 Service Manual page 79

R1002
GSM_PA_RAMP
2.2K
DCS_PCS_TX
DCS(1710-1785 MHz)
PCS(1850-1910 MHz)
GSM_TX
GSM850(824-849MHz)
GSM900(880-915MHz)
2mm
TP1
VBATT
C1106
DNI
TP1
LGE Internal Use Only
0603
C1018
39p
R1003
47
7dB
R1006
75
11dB
0603
1n
0603
C1043
C1042 1n
C1045
47p 1n
C1046
1n
C1049
ANT_SEL3
ANT_SEL2
ANT_SEL0
ANT_SEL1
Schematic of the Antenna Switch Block
1
DCS_PCS_IN
2
GND1
3
GSM_IN
4
VAPC
5
VBATT
6
BS2
7
BS1
8
_TXEN
29
PGND1
30
PGND2
31
PGND3
32
PGND4
33
PGND5
34
PGND6
- 79 - Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
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
39
PGND11
38
PGND10
Only for training and service purposes