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VB AT
VPAC
C 104
C 105
10 81 2
2
B AN D
TX_B AN D _SEL
3
TXEN
TX_EN
4
VB ATT
5
VR EG
6
TXPO W ER
VR AM P
R 107
100K
C 108
C 111
C 112
1NF
R 110
10K
AFC
C 128
10N F
SAM SU N G Pr opr i et ar y- C ont ent s m ay change w i t hout not i ce
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
R 101
D C S_PAM _I N
R 102
R 103
R 104
G SM _PAM _I N
R 105
U 101
R 106
1
L100
D C SI N
7
G SM 850/ 900I N
11
PC SO U T
9
G SM 850/ 900O U T
G N D
13
C 109
C 106
G SM _PAM _I N
D C S_PAM _I N
22
23
24
25
26
21
G SM _LN A_I N _N
R FI G N
20
G SM _LN A_I N _P
R FI G P
19
D C S_LN A_I N _N
R FI D N
18
D C S_LN A_I N _P
R FI D P
17
R FI P N
16
R FI P P
15
G N D
14
13
12
SER D AT
SER C LK
SER LE
SI _E N
TR AN SM I TTER & R EC EI VE R
VO SC
R 109
10
C 123
10PF
O SC 100
U 105
1
4
1
5
C 125
N C
VC C
1N F
3
2 A
2
4
3
Y
G N D
C 129
10N F
R 113
R 114
100
2-13
C O N 101
1
O UT 2
I N
G 2
G 1
4
3
L105
C 102
8
U 100
AN T
5
2
EG SM _TX
VC2
3
D C S_TX
10
11
EG SM _R X
VC1
1
D C S_RX
G
G
G
G
G
G
G
7
6
4
14
13
12
9
R 108
C 131
C 110
C 113
C 116
C 114
N C
C 119
N C
VRF
C 103
2930 31
32
33 34
27
28
35
G N D
36
G N D
R XQ P
1
R XQ N
R XQ N
2
R XI P
R XI P
U 103
3
R XI N
R XI N
4
TXI P
TXI P
5
TXI N
TXI N
6
TXQ P
TXQ P
7
TXQN
TXQ N
11
10
9
8
C 120
C LK 13M _R F
VRF
C 122
C 121
VO SC
L104
C 124
1N F
R 111
1. 5K
C 126
C 127
R 112
100P F
100PF
560
10K
C 130
10N F
X- TAL( 13M H z)
C N 100
1
1
2
2
R 100
C 100
C 101
D C S_TX_EN
G SM _TX_EN
U 102
C 107
3
3PF
D C S_LN A_I N _N
O U T
1
I N
4
L102
O U T
C 115
G
G
2
5
D C S_LN A_I N _P
U 104
C 117
3
G SM _LN A_I N _N
O U T
1
I N
4
L103
O U T
G G
C 118
2
5
G SM _LN A_I N _P
C LK 13M _TR
C LK 13M _M C
C LK 13M _YM U
C LK 13M _R F
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