LG KF310 Service Manual page 96

4.15.3 Checking RX level
TP1
C1005
56p
R1005
L1001
100nH
SW1000
KMS-518
2
GND1
3
GND2
8
GND3
10
GND4
20
GND5
22
GND6
23
GND7
24
GND8
1
ANT
TP2
1.8nH
L1012
18p
C1082
C1099
1nH
WCDMA_RX_HB
TP3
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
L1000
FL1000
DGM129M01
11
GSM850_EGSM_TX
9
PCN_PCS_TX
18p C1014
21
WCDMA_2100
13
GSM850_RX2
12
GSM850_RX1
15
EGSM_RX2
14
EGSM_RX1
17
PCN_RX2
16
PCN_RX1
19
PCS_RX2
18
PCS_RX1
WCDMA
GND3 GND4
GND2 GND5
GND1 GND6
U1003
RX
LDC151G8820Q-359
C1087
SCDY0003801
ANT TX
5.6p
FL1002 B7643
C1100
33p
51
R1028
R1027
47
R1029
130
S21 : -7.2 dB
S11 : -42 dB
L1019
1nH
- 97 -
4. TROUBLE SHOOTING
15nH
VREG_S3_2.7V
C1001 C1002
33p 0.1uF
ANT_SEL0
ANT_SEL1
ANT_SEL2
Bias
VREG_S2_2.1V
C1076 C1077
0.1u 120p
WCDMA_RX_LNA_OUT
C1088
1.5nH
C1096 2.2p
DNI
C1091
ACPM-7381 U1004
11
PGND
10 1
VCC2 VCC1
9 2
GND3 RFIN
8 3
RFOUT VMODE1
7 4
PDET_IN GND2 VMODE0
6 5
GND1 VEN
R1030
130
TP4
L1009
2nH
EFCH2140TDE1
FL1001
5 4
C1079 R1024
G2 O2
1
IN
G1 O1
3.9nH
33p
2 3
C1081
0.75p
+VPWR
C1092 C1093 2.2u
0.01u 120p
C1089
C1094 0.01u
R1026
1.8nH
NA
L1017
C1103
22p
PA_R0
LGE Internal Use Only