LG LG-P350 - Page 97

4. TROUBLE SHOOTING
- 97 -
Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

ͽ͸ͶͺΟΥΖΣΟΒΝΆΤΖ΀ΟΝΪ

Schematic of GSM/DCS/PCS Rx Block
TP1
TP2
DNI
L1011
33p
C1039
DNI
L1008
33p
C1037
DNI
L1005
33p
C1015
33p
C1007
DNI
L1002
881.5MHz,942.5MHz
FL1000
103
52
81
9
6
74
IN_881_5 OUT_881_5_1
OUT_881_5_2
OUT_942_5_1
IN_942_5 OUT_942_5_2
GND1 GND3
GND2 GND4
SW1000
4 2
1 3
1G
A
C
2
G
12n
L1013
2.2p
C1003
2.2p
C1010
22n
L1009
C1021
4.7p
L1000
100n
L1007
18n
C1016
4.7p
5.6n
C1033
C1052
6.8n
5.6n
C1038
C1040
6.8n
C1001
2.7n
1842.5MHz,1960MHz
FL1001
103
52
81
9
6
74
IN_1842_5 OUT_1842_5_1
OUT_1842_5_2
OUT_1960_1
IN_1960 OUT_1960_2
GND1 GND3
GND2 GND4
18n
L1004
0.5p
L1001
DNI
L1012
0.5p
L1010
82n
L1006
L1003
82n
U1001
31
30
29
44
43
42
41
40
39
38
73 63
53
16
15
41 31 21 1
1
01
34
33
32
17
9
18
8 19
7 20
6 21
5 22
4
3
2
3
42
2
5
2
62
72
8
2
1
DCS_PCS_IN
11
DN
G
0
1DN
G
9DNG 8DNG
GND1
7
D
N
G
GSM_IN
6DNG
VAPC
GND5VBATT
GND4BS2
GND3BS1
GND2_TXEN
ANT
EDO
M
WCDMA3
PGND4
PGND5
PGND6
PMET
4XR 3X
R
2X
R
1XR
WCDMA1
WCDMA2
7DNGP 8D
N
GP
9D
N
GP
PGND10
PGND11
PGND12
PGND13
PGND14
PGND15
PGND16
PGND1
PGND2
PGND3
GND
RX_PCS_P
RX_DCS_P
RX_GSM_900_P
RX_GSM_850_P
WCDMA_900_RTX
RX_GSM_850_M
RX_GSM_900_M
RX_DCS_M
RX_PCS_M
WCDMA_2100_RTX
GSM(869-894 MHz)
GSM(925-960 MHz)
PCS(1930-1990 MHz)
DCS(1805-1880 MHz)
TP1
TP2