LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 118 -
PAM IN/OUT Signal :
When PAM is under the operation of high power mode (PA_R0:High),
PAM OUT power must be over 21 dBm
PAM IN power must be under 10 dBm
TP2
TP1
TP4
TP3
3.3p
C1100
C1110
DNI
23
VMODE_CELL
4
24
VMODE_PCS
3
VREG_CELL
VREG_PCS
1
15
17
NC6
NC7
18
PGND
25
5
RFIN_CELL
2
RFIN_PCS
14
RFOUT_CELL
16
RFOUT_PCS
VCC1_CELL
6
22
VCC1_PCS
9
VCC2_CELL1
VCC2_CELL2
10
VCC2_CELL3
11
VCC2_PCS1
21
VCC2_PCS2
20
19
VCC2_PCS3
VCC_BIAS
U1005
RF5184
7
NC1
NC2
8
12
NC3
NC4
13
NC5
33p C1114
2.2nH
L1029
C1102
DNI
L1019
3.3nH
L1030
6.8nH
110
C1084
R1026
33p
TER
U1006
LDC151G8820Q-359
3
COU
2
IN
1
OUT
4
1nH
L1033
DNI
C1108
12
A
032
C1087
1p
C1101
1000p
VREG_WCDMA HB_2.85V
C1111
2200p
C1099
120p
L1025
NA
56
2.7nH
L1027
R1024
51
R1034
2200p
C1103
L1018
22p
4.7nH
VREG_RF_2.85V
C1116
120p
C1105
C1107
DNI
56p
C1085
1000p
C1117
C1109
DNI
3
COU
2
IN
1
OUT
4
TER
R1027
110
U1003
LDC15836M20Q-360
56p
C1086
4p
C1106
C1088
DNI
C1095
DNI
NA
L1020
L1021
9.1nH
DNI
C1113
2
ANT
1
GND1
4
GND2
GND3
8
9
GND4
6
GND5
3
GND6
5
RX
TX
7
FL1004
SAYZY1G95EA0B00
FL1002
ANT
GND1
GND2
GND3
GND4
GND5
RX1
RX2
TX
B7681
DNI
C1091
4.7u
C1104
DNI
C1096
2.2p
C1094
2.2p
C1089
2200p
C1115
3nH
L1028
C1097
2200p
L1031
3.3nH
VREG_WCDMA LB_2.85V
FL1007
ACMD-7403
ANT
G1
RX
TX
1.5nH
L1024
RX_WCDMA_1900
RX_WCDMA_850_900_M
RX_WCDMA_850_900_P
PDET_IN
PWR_DET
VREG_WCDMA
RX_WCDMA_2100
PWR_DET
TP1
TP2
TP3
TP4