4. TROUBLE SHOOTING
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Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
FL1102
897.5 MHz,942.
5 MHz
9
5
8
4
7
2
3
6
1
RX1
AN
T
TX
GND1
GND4
GND2
RX2
GND3
GND6
C1171
3p
C1166
10u
0
R1117
C1168
1.5n
L1118
15n
C1167
3p
C1176
1.5p
C1191
DN
I
33p
C1172
2.7n
R1118
L1125
7.5n
FL1104
1950MHz, 2140M
Hz
9
5
8
4
7
2
3
6
1
RX
AN
T
TX
GND1
GND4
GND2
GND5
GND3
GND6
C1182
12n
C1170
DNI
L1116
DNI
L1122
3.9n
FL1103
897.5MH
z
5
3
2
4
1
IN
OUT
G1
G2
G3
1 2 1 1 R
0 0 1
0 0 1
2 2 1 1 R
68
R1119
C1180
3.3p
12n
L1114
1p
L1123
1.5n
L1120
L1113
DN
I
DNI
C1174
22n
L1119
100p
C1173
C1190
33p
1.5n
L1130
33p
C1189
U1102
16
8
7
9
6
10
5
11
4
12
3
13
2
14
1
15
PGND1
IN_BAND_VIII
OUT_BAND_VIII
VMODE_0
GND3
VMODE_1
VCC2_2
VCC2_1
GND2
VEN_BAND_VIII
OUT_BAND_I
VEN_BAND_I
GND1
IN_BAND_I
CPL_OU
T
PGND
2
L1117
2.2n
VBAT
p 0 0 1
7 7 1 1 C
8 7 1 1 C
p 0 0 1
p 0 0 1
9 7 1 1 C
330p
C1165
C1164
0.001u
F
FL1105
1950MH
z
5
3
2
4
1
IN
OUT
G1
G2
G3
L1121
0
2.2n
L1124
C1183
0.5p
DNI
C1175
L1126
DNI
33p
C1181
PA_ON1
PA_ON0
PA_R0
RX_WCDMA_2100
PDET_IN
RX_WCDMA_850_900_P
RX_WCDMA_850_900_M
RX_WCDMA_1900
WCDMA_1900_2100_RTX
WCDMA_1900_2100_TX_OU
T
WCDMA_850_900_RTX
WCDMA_850_900_TX_OUT
Band 8
W2100 : C1213->33pF, C1214
->DNI
W1900 : C1213->DNI, C1214-
>33p
F
0603
about 9.5 dB
W2100
Near to 4 Pin
Near to 12 Pin
Near to 12 Pi
n
W90
0
Band I
TP3
TP3
TP4
TP2
TP1
TP1