Only For Training And Service Purposes - LG KC910 Service Manual

4. TROUBLE SHOOTING
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
C1084
L1018 FL1002 B7681
ANT TX
4.7nH
33p
RX1
RX2
GND1
GND2 GND5
GND3 GND4
FL1004
GND3 GND4
8 9
GND2 GND5
4 6
GND1 GND6
1 3
TX
7
L1027 2.7nH
3.3p
C1100
ANT RX
2 5
SAYZY1G95EA0B00
C1102
DNI
L1028
RX_WCDMA_2100
L1029
2.2nH
DNI
C1108
ACMD-7403 FL1007
C1110
032
DNI
A
RX TX
12
RX_WCDMA_1900
33p C1114
22p
C1116
LGE Internal Use Only
TP4
TP3
TP1
C1085 56p
C1089 2.2p
RX_WCDMA_850_900_P
C1091
L1021
DNI
9.1nH
RX_WCDMA_850_900_M
C1094 2.2p
C1095 C1096
DNI DNI
120p C1099
L1025
NA
C1105
3nH
120p
TP2
C1109
DNI
U1003
LDC15836M20Q-360 L1019 3.3nH
C1087 C1088
L1020
1p
DNI
NA
R1024
PWR_DET PDET_IN
56
U1006
LDC151G8820Q-359
C1106 4p
L1030
C1107
6.8nH
DNI
R1034
51
PWR_DET
Copyright © 2007 LG Electronics. Inc. All right reserved.
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TP2
TP1
2200p
VREG_WCDMA LB_2.85V
C1097
C1101
1000p
C1103
2200p
NC4 VCC1_CELL
13 6
RFOUT_CELL RFIN_CELL
14 5
NC5 VMODE_CELL
15 4 L1031 3.3nH
RFOUT_PCS VREG_CELL
16 3
NC6 RFIN_PCS
17 2
NC7 VREG_PCS
18 1
RF5184
U1005
VREG_RF_2.85V VREG_WCDMA HB_2.85V
2200p
C1111
L1033
C1115
1nH
2200p
C1117
1000p

Only for training and service purposes

TP3
C1104
4.7u
VREG_WCDMA
TP4