Samsung SGH-X120, Service Manual

Page: 16 / 28

SAM SU N G Proprietary-C ontents m ay change w ithout notice
SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2- 13
This Document can not be used without Samsung's authorization
X-TA L(13M H z)
TR A N SM ITTER & R EC EIVE R
C 114
C 111
L105
4
VB ATT
10
V
C
C
V
C
C
2
81 2
V
C
C
2
6
VR AM P
VR EG
5
U 101
2 B AN D
D C SIN
1
13
G N D
G SM 850/900IN
7
G SM 850/900O U T
9
11
PC SO U T
3
TXEN
10K
R 102
R 113
10N F
C 128
3
O U T
O U T
4
VB AT
C 100
U 102
2
G
5
G
I N
1
R 106
C 107
3PF
R 100
C 102
C 118
C 120
C 131
C 104
10N F
C 129
R 110
VRF
VRF
10K
C 110
N C
C 116
2
G G
5
I N
1
3
O U T
O U T
4
C 127
100PF
U 104
C 122
R 101
R 105
1 1
2
2
C 119
N C
C N 100
9
G G
12 13
G G
14
11
VC1
2
VC2
AN T
8
D C S_RX
1
D C S_TX
3
10
EG SM _R X
5
EG SM _TX
G
4 6
G
7
G
R 107
U 100
C 101
100K
G
N
D
2
O
U
T 3
4
V
C
C 1
V
T
L104
VO SC
O SC 100
C 124
1N F
C 125
10
1N F
VO SC
R 109
C 130 10N F
10PF
C 123
L100
C 106
R 103
L102
C 115
L103
R 104
R 108
C 109 C 108
C 117
C O N 101
3
G 1
4
G 2
IN
1
O UT
2
1.5K
R 111
C 103
R 112
560
4
C 121
U 105
2 A
G N D
3
1
N C
5
VC C
Y
C 126
100P F
V
D
D
X
E
N
26
X
IN
8
X
O
U
T
27
10
_
P
D
N
_
S
E
N
12
VPAC
13
S
D
I
14
S
D
O
11
TXI N
5
TXI P
4
TXQN
7
6
TXQ P
9
V
D
D
32
R FI P N
17
R FI P P
16
R
F
O
D
22
R
F
O
G
23
R XI N
3
2
R XI P
1
R XQ N
28
R
X
Q
P
S
C
L
K
G
N
D
33
G
N
D
34
35
G N D
G N D
36
R FI D N
19
R FI D P
18
R FI G N
21
20
R FI G P
U 103
D
IA
G
1
24
D
IA
G
2
25
G N D
15
G
N
D
2930
G
N
D
31
G
N
D
C 113 1NF
R 114
100
C 112
C 105
D C S_TX_EN
G SM _TX_EN
C LK 13M _M C
C LK 13M _TR
AFC
C LK 13M _R F
C LK 13M _YM U
G SM _LN A_I N _P
G SM _LN A_I N _N
D C S_LN A_I N _N
D C S_LN A_I N _P
TXQ P
G SM _LN A_I N _N
G SM _LN A_I N _P
D C S_LN A_I N _N
G SM _PAM _I N
D C S_PAM _I N
SER C LK
SER D AT
SI _E N
SER LE
R XI P
R XI N
R XQ P
R XQ N
C LK 13M _R F
D C S_LN A_I N _P
TXI N
TXI P
TXQ N
TXPO W ER
TX_B AN D _SEL
G SM _PAM _I N
D C S_PAM _I N
TX_EN