VF1
VF2
C410
106
R
425
4K7
R4
2
1
1
0
K
R4
2
2
1
0
K
G1
G2
G3
G4
G5
G6
G7
G10
S2
-2
S1
-1
S3
-3
S4
S5
S6
S7
G9
S9
S1
0
S1
1
S1
2
S1
3
G8
S1
5
S1
4
S1
6
S8
REM
1
GND
2
Vcc
3
S401
REM
OT
E
C40
2
10KO
hm
/104
R42
3100
C40
8
106
C40
1
104
C40
3
NC/1
04
V+5V
REM
C40
4
104
V+5V
V+5V
C40
6
104
-27V
SW
1
1
SW
2
2
SW
3
3
SW
4
4
DOUT
5
DI
N
6
NC
7
CLK
8
STB
9
KE
Y1
10
KE
Y2
11
KE
Y3
12
KE
Y4
13
Vdd
14
S1/KS
1
15
S2/KS2
16
S3/KS3
17
S4/KS4
18
S5/KS5
19
S6/KS6
20
S7/KS7
21
S8/KS8
22
S9/KS9
23
S10/KS10
24
S11/KS11
25
S12/KS12
26
S1
3
27
S1
4
28
S1
5
29
S1
6
30
S
1
7/G12
31
S
1
8/G11
32
Vdd
33
VE
E
34
S
1
9/G10
35
S
2
0/G9
36
G8
37
G7
38
G6
39
G5
40
G4
41
G3
42
G2
43
G1
44
Vdd
45
LED
5
46
LED
4
47
LED
3
48
LED
2
49
LED
1
50
Vss
51
OSC
52
U40
1
PT16311
G1
G2
G3
G4
G5
G6
G7
G8
G9
G1
0
G1
1
G1
2
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S1
3
S1
4
S1
5
S1
6
R4
2
6
33K
R4
2
7
33K
R4
2
8
33K
R4
2
9
33K
C40
5
104
VFD_
DATA
VFD_
ST
B
VFD_
CLK
VF
D-
DATA
VF
D-
S
T
B
VF
D-
CLK
VF
1
1
VF
1
2
S1
4
S2
5
S3
6
S4
7
S5
8
S6
9
S7
10
S8
11
G1
28
G2
29
S9
12
S1
0
13
S1
1
14
S1
2
15
S1
3
16
S1
4
17
S1
5
18
S1
6
19
VF
2
41
VF
2
42
G3
30
G4
31
G5
32
G6
33
G7
34
G8
35
G9
36
G10
37
G11
38
G12
39
VFD40
1
HL
-D
1586
G1
1
G1
2
Q40
1
NC
/9014
R41
3
NC
/10K
R4
0
1
NC/
4
K
7
R4
1
0
NC/
0
R4
0
5
NC/
0
V+5V
S1-1
S1
Q402
NC
/9014
R41
4
NC
/10K
R4
0
2
NC/
4
K
7
R4
1
1
NC/
0
R4
0
7
NC/
0
V+5V
S2-2
S2
Q40
3
NC
/9014
R41
5
NC
/10K
-27
V
R4
0
3
NC/
4
K
7
R4
1
2
NC/
0
R4
0
9
NC/
0
V+5V
S3-3
S3
C40
7
NC
/105
L40
1
NC
/601
R40
4
0/NC
R40
6
0/NC
R40
8
0/NC
C40
9
101
R420
100
R419
100
R41
8
100
R430
0.47
R416
0.47
LED_B
D
R424
47K
L417
1K
V+5V
SK1
D401
4148
D402
4148
D403
4148
SK2
SK3
K1
K2
K3
L40
2
60
1
L40
3
60
1
L40
4
60
1
L4
05
601
L40
6
60
1
L4
07
601
L40
8
60
1
L40
9
60
1
L41
0
60
1
L41
1
60
1
L41
2
60
1
L41
3
60
1
L41
4
60
1
L41
5
60
1
L41
6
60
1
VFD_
DATA
VFD_
ST
B
VFD_
CLK
V+5V
SK1
SK2
SK3
K1
K2
K3
VF1
VF2
-27V
REM
LED_B
D
VFD_
DATA__
VFD_
ST
B_
_
VFD_
CLK_
_
V+5V
__
SK1__
SK2__
SK3__
K1__
K2__
K3__
VF1
__
VF2
__
-27V__
REM_
_
LED_B
D_
_
VF
DB
OARD
35-MBD
7020-04A1
D-GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CN40
1
1.0/16PF
FC
C411
104
C41
2
101
S1
S2
S3
R417
0.47
VF2
R431
0.47
VF1
Display Board -- Circuit Diagram
12-4
12-4
Summary of Contents for MBD7020/12
Page 35: ...AMP Board Layout Diagram 12 3 12 3 ...
Page 37: ...Display Board Layout Diagram 12 5 12 5 ...
Page 39: ...Key Board Layout Diagram 12 7 12 7 ...
Page 42: ...Power Board Layout Diagram 12 10 12 10 ...
Page 52: ...Decoder Board Layout Diagram 12 20 12 20 ...
Page 54: ...Revision List Revision List Version 1 0 Initial Release 14 1 ...
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