Service manual

4
4
3
3
2
2
1
1
D D
C C
B B
A A
EMG
Out1
Out4
W/N
Duplex
Out3
Mob PTT
Out2
Mob PTT
Duplex
W/N
Tx 9V
Out1
Out2
Out3
Out4
EMG
SW B+
VCC
VCC
VCC
VCC
VCC
VCC
SW B+
3V3
VCC
SW B+
VCC
3V3
VCC
Bias
VCC
9V
VCC
VCC
VCC
Bias
Bias
Bias
Bias
VCC
Size
Scale
CAGE Code
DWG NO
Rev
Sheet
of
B
Pyramid Communications
Friday, February 08, 2008
11
Custom
[phone] Fax: [phone]
SVR-250 Controller Board
Size
Scale
CAGE Code
DWG NO
Rev
Sheet
of
B
Pyramid Communications
Friday, February 08, 2008
11
Custom
[phone] Fax: [phone]
SVR-250 Controller Board
Size
Scale
CAGE Code
DWG NO
Rev
Sheet
of
B
Pyramid Communications
Friday, February 08, 2008
11
Custom
[phone] Fax: [phone]
SVR-250 Controller Board
Rx 5V
5V Cont
Tx Aud
Lock
LE
Data
SClk
RSSI
Rx Aud
N/C
cw
Squelch
TEST
+
-
RSSI
10K
+-
cw
cw
RF
Pwr
cw
Ver
10K
SMT
Gnd
9V
Tx 9V
Rx 5V
5V Cont
Tx Aud
Lock
LE
Data
SClk
RSSI
Rx Aud
W/N
Ver
Gnd
9V
Tx 9V
Gnd
9V
VCC
Tx Data
Rx Data
COR
Tx Module
Rx Module
ARS-250
Programming
Jack
To Display
4
10K
CTCSS
-
Reset
Flash
Prog
NONC
Duplex
Operation
Only
From
Tx
Module
Module
Rx
To
To
Aux Rx
RF
Detector
APC
10K
RDev
Ch Sel
cw
cw
Loc Mic
100K
100K
Rx Sens
100K
Mob Dev
20K
Loc Spkr
cw
cw
15
Only
Operation
Simplex
C27C27
C15
.1U
C15
.1U
J11J11
R68
1K0
R68
1K0
C33
2U2
C33
2U2
R38
5K6
R38
5K6
R47
5K6
R47
5K6
R40
27K
R40
27K
J10J10
J5J5
Q6
2N4401
Q6
2N4401
P12
CON6
P12
CON6
1
2
3
4
5
6
U8
LM7809CV
U8
LM7809CV
IN
1
9V
3
P8
MCX
P8
MCX
R46
330
R46
330
R43
2K2
R43
2K2
C16
.1U
C16
.1U
R66
100K
R66
100K
R65
15K
R65
15K
RV10RV10
U1B
2272
U1B
2272
5
6
7
R50
2K2
R50
2K2
R45
100K
R45
100K
R49
33K
R49
33K
C23
.1U
C23
.1U
R53
1K0
R53
1K0
R48
10K
R48
10K
Q13
IRLM1902
Q13
IRLM1902
R11
100K
R11
100K
R37
10K
R37
10K
C34
2U2
C34
2U2
R51
22K
R51
22K
R10
5K6
R10
5K6
R73
100K
R73
100K
C28
220P
C28
220P
U15
HMC544
U15
HMC544
RF2
1
GND
2
RF1
3
B
4
O/P
5
A
6
Q15
IRLM1902
Q15
IRLM1902
J14J14
R59
5K6
R59
5K6
C29
0.5P
C29
0.5P
C24C24
R60
5K6
R60
5K6
J13J13
D4
MMBD301
D4
MMBD301
P11
TNC
P11
TNC
R61
100K
R61
100K
R14
820
R14
820
X1
18.432
X1
18.432
R28
1M
R28
1M
J4J4
C11
5P
C11
5P
U17C
4053
U17C
4053
5
3
9
C1
6U8
C1
6U8
R63
330
R63
330
C10
5P
C10
5P
C2
6U8
C2
6U8
P5P5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R18
10K
R18
10K
C9
2U2
C9
2U2
J6J6
C18
2N2
C18
2N2
R27
100K
R27
100K
R52
68
R52
68
C7
6U8
C7
6U8
.1U.1U
D1
BAV99
D1
BAV99
C32
2U2
C32
2U2
C30
100P HV
C30
100P HV
U9B
2274
U9B
2274
5
6
7
P4P4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R41
27K
R41
27K
P10
TNC
P10
TNC
C12
2U2
C12
2U2
J2J2
J1J1
Q7Q7
C13
.1U
C13
.1U
P6
CON6
P6
CON6
1
2
3
4
5
6
R22
100K
R22
100K
Q17
IRLM1902
Q17
IRLM1902
RV 8RV 8
J15J15
S2S2
U10
CMX881
U10
CMX881
N/C
1
N/C
2
IRQ
3
DO
4
DVss
5
Sck
6
DI
7
CS
8
AVss
9
VBias
10
RxIn
11
RxFB
12
In2
13
In2FB
14
Mic
15
MicFB
16
Sig
17
AVdd
18
Mod1
19
Mod2
20
AVss
21
RxAud
22
DVdd
23
X1
24
X2
25
DVss
26
N/C
27
N/C
28
R36
5K6
R36
5K6
C17
22U
C17
22U
R2
22K
R2
22K
U11
CMX881
U11
CMX881
N/C
1
N/C
2
IRQ
3
DO
4
DVss
5
Sck
6
DI
7
CS
8
AVss
9
VBias
10
RxIn
11
RxFB
12
In2
13
In2FB
14
Mic
15
MicFB
16
Sig
17
AVdd
18
Mod1
19
Mod2
20
AVss
21
RxAud
22
DVdd
23
X1
24
X2
25
DVss
26
N/C
27
N/C
28
S1
P/O RV4
S1
P/O RV4
R69
100K
R69
100K
R70
100K
R70
100K
U7
LM7805
U7
LM7805
IN
1
5V
3
U4
24C128
U4
24C128
A0
1
A1
2
SDA
5
SCL
6
R72
100K
R72
100K
U16A
2272
U16A
2272
3
2
1
C21
100U
C21
100U
R16
2K2
R16
2K2
P1
DB15M
P1
DB15M
8
15
7
14
6
13
5
12
4
11
3
10
2
9
1
R26
10K
R26
10K
C20
100U
C20
100U
R34
100K
R34
100K
J9J9
C22
100U
C22
100U
S3S3
C4
.1U
C4
.1U
R42
100K
R42
100K
RV3RV3
R35
100K
R35
100K
Q4
MJD32
Q4
MJD32
Q8
IRLM1902
Q8
IRLM1902
C3
.1U
C3
.1U
U1A
2272
U1A
2272
3
2
1
R30
100K
R30
100K
R15
2K2
R15
2K2
Q14
IRLM1902
Q14
IRLM1902
J7J7
RV2RV2
R31
100K
R31
100K
R17
100k
R17
100k
P7
RJ11
P7
RJ11
1
2
3
4
Q11
J175
Q11
J175
R32
100K
R32
100K
R62
22K
R62
22K
U9C
2274
U9C
2274
10
9
8
RN1
2K2x9
RN1
2K2x9
D3D3
R33
100K
R33
100K
+
-
U2
LM386
+
-
U2
LM386
2
3
5
6 1
4 8
7
R29
1M
R29
1M
RV4RV4
R8
22K
R8
22K
U13
LM321
U13
LM321
1
3
4
C8
2U2
C8
2U2
RV5
100K POT
RV5
100K POT
RV6RV6
C14
.1U
C14
.1U
U12
LM321
U12
LM321
1
3
4
J12J12
C6
100U
C6
100U
R67
470
R67
470
P2
3.5mm_Jack
P2
3.5mm_Jack
R56
2K2
R56
2K2
C5
.1U
C5
.1U
P3
CON5
P3
CON5
1
2
3
4
5
R21
8R_1W
R21
8R_1W
J8J8
R20
10
R20
10
C31
100P HV
C31
100P HV
R44
22K
R44
22K
Q16
IRLM1902
Q16
IRLM1902
R202
4R7
R202
4R7
R54
620
R54
620
R57
2K2
R57
2K2
P12A
CON6
P12A
CON6
1
2
3
4
5
6
P9
MCX
P9
MCX
F1
2A
F1
2A
Q12
XN4210
Q12
XN4210
VAR1
18V
VAR1
18V
JP1JP1
1
2
3
U6
74HC595
U6
74HC595
SDO
9
CLR
10
G
13
SDI
14
SRCLK
11
RCLK
12
QA
15
QB
1
QC
2
QD
3
QE
4
QF
5
QG
6
QH
7
TP1TP1
R13
100K
R13
100K
R7
22K
R7
22K
D2
BAV99
D2
BAV99
R6
820
R6
820
R1
22K
R1
22K
Q2
2N4401
Q2
2N4401
R203
51
R203
51
R9
22K
R9
22K
U16B
2272
U16B
2272
5
6
7
Q1
2N4401
Q1
2N4401
Q5
2N4401
Q5
2N4401
R64
330
R64
330
U3
AT89C51RB2
U3
AT89C51RB2
X1
21
X2
20
INT0
14
INT1
15
T0
16
T1
17
WR
18
RD
19
P1.0
2
P1.1
3
P1.2
4
P1.3
5
P1.4
6
P1.5
7
P1.6
8
P1.7
9
P0.0
43
P0.1
42
P0.2
41
P0.3
40
P0.4
39
P0.5
38
P0.6
37
P0.7
36
P2.0
24
P2.1
25
P2.2
26
P2.3
27
P2.4
28
P2.5
29
P2.6
30
P2.7
31
PSEN
32
ALE/P
33
TXD
13
RXD
11
RESET
10
EA/VPP
35
R4
2K2
R4
2K2
R5
22K
R5
22K
U5
MCP101T-450
U5
MCP101T-450
I
3
O
2
1
U14
MAX202
U14
MAX202
I1
11
I2
10
O3
12
O4
9
C+
1
C-
3
V+
2
O1
14
O2
7
I3
13
I4
8
C+
4
C-
5
V-
6
U17B
4053
U17B
4053
2
1
10
R3
22K
R3
22K
R55
620
R55
620
R39
10K
R39
10K
RV9RV9
C19
1N0
C19
1N0
U9D
2274
U9D
2274
12
13
14
R25
56K
R25
56K
R71
100K
R71
100K
R23
1M
R23
1M
R58
5K6
R58
5K6
R201
8K2
R201
8K2
R24
100K
R24
100K
Q9
XN4210
Q9
XN4210
Q3
IRFU5305
Q3
IRFU5305
Q10
2N4401
Q10
2N4401
R12
1M
R12
1M
U9A
2274
U9A
2274
3
2
1
R19
820
R19
820