Flow Chart of Troubleshooting
9-
30
Transmitter
MO
D
E
G
SM 9
00
G
S
M
1800/
1900
OFF
H
H
H
H
L
L
G
S
M
_V
C
O
_E
N_N
DCS
_V
CO
_E
N_N
C163
C158
C128
R130
R132
L115
L101
C110
L118
C117
R123
C148
L110
R
117
L109
L112
B
LM
15A
G
121S
N1D
R125
C155
C151
8
VT
UN
E_R
EF
L114
7
VD
DA
3
10
VD
DA
4
15
VD
DA
5
23
V
DDA
6
26
V
DDA
7
27
V
DDA
8
31
VD
DA
9
43
VD
DM
39
VD
DA
11
41
VD
DA
12
48
V
DDA
13
50
V
DDA
14
52
V
DDA
15
54
V
DDA
16
56
V
DDA
17
5
VD
DA
2
42
TX
_V
CO
_F
B
53
UM
T
S
1900_O
UT
51
UM
T
S
2100_O
UT
55
UM
T
S
800_O
UT
49
VC
O
N
T
R
O
L
9
VC
O_T
UN
E
4
VD
DA
1
36
VD
DA
10
45
SBD
T
46
SBST
6
TC
XO
19
TX
_IN
18
TX
_IP
40
TX
_M
OD
_C
P
17
TX
_Q
N
16
TX
_Q
P
47
RF
_O
N
14
RX
_IN
13
RX
_IP
12
RX
_Q
N
11
RX
_Q
P
32
RX
_V
CO
_IN
33
R_B
IA
S
44
SBC
K
24
G
S
M
1900_I
NN
25
G
S
M
1900_I
NP
21
G
S
M
850_I
NN
22
G
S
M
850_I
NP
38
GS
M90
0_I
NN
37
GS
M90
0_I
NP
58
NC1
59
NC2
1
CP
_H
OLD
1
29
CP
_H
OLD
2
20
DA
C_RE
F
3
FA
Q1
28
FA
Q2
57
GN
D
34
GS
M18
00
_IN
N
35
GS
M18
00
_IN
P
2
CP
1
30
CP
2
R134
U100
R113
R103
T
A
153
R108
F
102
G
25
G
1
IN
OU
T
3
4
OU
T
R1
04
R
116
C111
C11
8
C105
L103
A
N
T
100
C149
R133
C107
R122
C150
L116
R129
12
VC
C
6
VR
AMP
VR
EG
|VMO
D
E
5
C119
100nF
16
G
G
17
G
8
G
SM_
IN
7
9
GS
M_O
UT
T
XEN
3
4
VBAT
T
BS
2
1
DCS
|P
CS
_I
N
DCS
|P
CS
_O
UT
15
G
13
14
G
10
G
G
11
U102
R119
C126
10NF
C121
33P
F
L119
C152
25
VD
D
L113
NC
17
18
NC
5
RX
1
2
RX
2
RX
3 3
RX
4 4
TR
X
20
13
TX
1
11
TX
2
NC
29
NC
31
8
NC
NC
91
0
NC
NC
14
15
NC
NC
7
16
19
GN
D
GN
D
21
23
GN
D
24
GN
D
30
GN
D
32
GN
D
NC
7
AN
T
22
26
CT
L-
A
CT
L-
B
27
28
CT
L-
C
1
GN
D
GN
D
6
12
GN
D
U101
R
118
R131
C125
R109
C157
C146
6.
2K
R114
L105
C116
C160
R127
C159
DCS
_O
UT
G
SM_
O
U
T
1
VC
C
3
VC
T
L
10
11
VSW
1
VSW
2
9
G
4
G
67
G
G
81
2
G
G
13
14
G
5
V
C
O
100
G
2
G
25
G
1
IN
OU
T
3
OU
T
4
C145
R10
6
F
100
C133
390P
F
R120
C106
L102
C108
C109
C143
47P
F
C144
1000nF
R1
10
3.3
K,1
%
33P
F
C140
4
G
100nF C139
RF
S
100
A
2
3
C
1
G
C115
R124
C100
R112
C104
100P
F
C123
C122
10NF
C142
C103
C130
3.
9NF
C132
L108
C147
C112
C113
R121
R126
C12
4
A
N
T
101
10
R115
C127
C131
C138
47nH
L121
C156
C141
C102
L100
C120
1NF
L120
R111
R107
F
101
2
GG
5
IN
1
3
OU
T
OU
T
4
L106
R128
C101
L137
L104
L138
C161
L117
L111
R10
5
C154
C114
R100
L122
R102
C
162
C135
G
SM_
PA_
EN
G
S
M
_P
A
_P
W
R_CT
L
VBAT
T
L107
G
S
M
1800_I
NP
G
S
M
1800_I
NN
G
S
M
1900_I
NP
G
S
M
1900_I
NN
M
O
D_CP
RT
R6200_CA
LP
A
T
H
G
SM_
BAN
D
G
S
M
1800_RX
G
S
M
900_RX
G
S
M
1900_RX
G
S
M
900_I
NN
G
S
M
900_I
NP
G
S
M
_A
N
T
_S
E
L1_N
G
S
M
_A
N
T
_S
E
L0_N
AN
T
U2100_A
NT
G
S
M
1900_RX
G
S
M
900_RX
G
S
M
1800_RX
TC
X
O
V
R
E
G
_RF
T
X
_2.
85V
V
R
E
G
_RT
R_2.
85V
V
R
E
G
_RT
R_2.
85V
VR
EG
_SYN
T
_2
.8
V
VR
EG
_SYN
T
_2
.8
V
V
R
E
G
_RF
RX
_2.
85V
G
S
M
_A
N
T
_S
E
L2_N
V
R
E
G
_RT
R_2.
85V
V
R
E
G
_RT
R_2.
85V
T
X
_A
G
C_A
DJ
VR
EG
_MSMP_
2.6
V
TX
_Q
P
TX
_Q
M
TX
_IP
TX
_IM
RX
_Q
M
RX
_Q
P
RX
_V
CO
SBC
K
SBD
T
SBST
M
O
D_CP
T
XVC
O
U2100_O
UT
V
R
E
G
_RT
R_2.
85V
CP
2
DA
C_RE
F
FA
Q2
G
S
M
1800_I
NN
G
S
M
1800_I
NP
G
S
M
1900_I
NN
G
S
M
1900_I
NP
G
S
M
900_I
NN
G
S
M
900_I
NP
RF
_O
N_T
X
_O
N
RX
_I
M
RX
_I
P
V
R
E
G
_RF
T
X
_2.
85V
G
SM_
VC
O
_EN
_N
DCS
_V
CO
_E
N_N
T
XVC
O
Summary of Contents for SGH-Z310
Page 37: ...8 PCB Diagrams 8 1 8 1 PCB Top Diagram ...
Page 38: ...PCB Diagrams 8 2 8 2 PCB Bottom Diagram ...
Page 41: ...Flow Chart of Troubleshooting 9 3 ...
Page 45: ...Flow Chart of Troubleshooting 9 7 ...
Page 67: ...Flow Chart of Troubleshooting 9 29 ...