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FR9
+5V
10K
FQ1
FR1
1
3
FSEG a
2N2907A
15
FR10
+5V
10K
FQ2
FR2
1
3
FSEG b
2N2907A
15
FR11
+5V
10K
FQ3
FR3
1
3
FSEG c
2N2907A
15
FR12
+5V
10K
FQ4
FR4
1
3
FSEG d
15
2N2907A
FR13
+5V
10K
FQ5
FR5
1
3
FSEG e
15
2N2907A
FR14
+5V
10K
FQ6
FR6
1
3
FSEG f
2N2907A
15
FR15
+5V
10K
FQ7
FR7
1
3
FSEG g
2N2907A
15
FR16
+5V
10K
FQ8
FR8
1
3
FDP
2N2907A
15
N-550B
FJ1
2
B1
A1
4
B2
A2
6
B3
A3
8
B4
A4
10
B5
A5
12
B6
A6
14
B7
A7
16
B8
A8
18
FRF1
B9
A9
20
B10
A10
FRF3
22
FRE1
B11
A11
24
FRC3
B12
A12
26
FRC5
B13
A13
28
FRC7
B14
A14
30
FRB1
B15
A15
32
FRB5
B16
A16
34
B17
A17
36
B18
A18
38
B19
A19
40
B20
A20
42
B21
A21
44
B22
A22
DIN 44_AB-H
FRE3
FC1
1uF
TP32
1
T POINT F3
+5V
FC2
Power ON/OFF
1uF
FR43
FC3
+5V
1uF
4.7K
FSW8
Alarm Silence
1
3
5
7
9
11
13
15
17
FRF0
19
FRF2
21
FRE0
23
FRE2
25
FRC4
27
FRC6
29
FRB0
31
FRB4
33
FRB3
35
37
FRC2
39
41
43
ACLED
FSW9
Technical Discussion
+5V
+5V
+5V
+5V
FQ11
FQ15
FQ13
FQ9
3
1
3
1
3
1
3
2N2222A
2N2222A
2N2222A
2N2222A
FDIGIT 7
FDIGIT 5
FDIGIT 3
FDIGIT 1
+5V
+5V
+5V
+5V
FQ14
FQ10
FQ12
3
1
3
3
1
3
1
2N2222A
2N2222A
2N2222A
2N2222A
FDIGIT 6
FDIGIT 8
FDIGIT 2
FDIGIT 4
Figure 58: Front Panel PCB
Interface and LED Drivers
Schematic Diagram
1
FQ16
1
135
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