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LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
C1022
0.5p
27p
86
01
C
C1057 100p
DNI
C1003
05
01
C
33p
3.9n
L1020
C1038
0.5p
C1104
DNI
C1014
1n
12n
L1021
C1021
1n
3.9n
L1017
0.75p
C1009
U1002
51
8
7
9
6
10
5
11
4
12
3
13
2
14
1
RFIN_LOW
RFOUT_LOW
VMODE
GND3
VBP
VCC2
VCC1
GND2
VEN_LOW
RFOUT_HI
VEN_HI
GND1
RFIN_HI
CPL
D
N
G
P
4.7n
L1024
0.5p
C1063
C1056
68p
C1035
22p
FL1002
897.5 MHz,942.5 MHz
9
5
8
4
7
2
3
6
1
RX1
ANT
TX
GND1
GND4
GND2
RX2
GND3
GND6
L1022
12n
01
01
R
91
C1046
100p
FL1003
1950MHz,2140MHz
7
5
8
4
9
2
3
1
6
ANT
RX
TX
GND1
GND6
GND2
GND5
GND3
GND4
C1039
4.7p
100p
C1066
61
01
R
91
1.2n
L1003
18n
L1019
2.7n
L1023
FL1005
1950MHz
5
3
2
4
1
IN
OUT
G1
G2
G3
52
01
L
1.2n
82
R1020
L1014
10n
+VPWR
FL1006
897.5MHz
5
3
2
4
1
IN
OUT
G1
G2
G3
68p
C1028
C1101
4.7u
19
01
C 3.3p
22p
C1112
GND
59
01
C 3.3p
1.5n
L1018
W_PA_R0
W_2100_PA_ON
W_PA_R1
W_900_PA_ON
WCDMA_900_TX_OUT
RX_WCDMA_2100
RX_WCDMA_900_M
PDET_IN
RX_WCDMA_900_P
WCDMA_2100_TX_OUT
SFSY0035101
W900 RX(925 - 960 MHz)
BAND1(2520):SAYP1G95AA0B00
SDMY0002801
Band 1
W900 TX(880 - 915 MHz)
BAND5 : B9425 ( SFSY0036501)
BAND 5/8
BAND2 : B9640 (SFSY0036601)
BAND8(2520) : B7953 (SDMY0002801)
SFSY0036501
BAND8 : B9442 (SFSY0037601)
BAND1 : B9414 (SFSY0035101)
SDMY0001901
BAND2(2520) : ACMD-7407
Band 8
BAND 1/2
W2100 TX(1920 - 1980 MHz)
5.Trouble Shooting
(RF)
For testing, Max power output is needed.
1K
R1024
1K
R1022
R1025 1K
100p
C4
C3
DNI
DNI
C2
SW1001
G1
G2
ANT
G3
15n
L1002
1K
R1023
C1019
0.1u
C1043
33p
VREG_SYNTH_2.75V
FL1007
850,1900,2100MHz
6
5
4
3
7
11
9
22
21
20
13
24
12
23
10
15
8
14
1
17
16
2
19
18
PCS_RX1
PCS_RX2
ANT
PCN_RX1
PCN_RX2
GND1
EGSM_RX1
GND2
EGSM_RX2
GND3
GND4
GSM850_RX1
GND5
GSM850_RX2
WCDMA_2100
WCDMA_850
WCDMA_1900
PCN_PCS_TX
GSM850_EGSM_TX
D
D
V
1L
RT
C
2L
RT
C
3L
RT
C
4L
RT
C
SW1002
G4
G3
IN
OUT
G1
G2
68p
C1080
ANT_SEL3
ANT_SEL2
ANT_SEL1
ANT_SEL0
TP1
TP2
TP
TP4