R31
11.
2K
R31
01.
2K
G
1
B
2
A
3
RO
T301
VOL
SW306
SW
302
SW304
SW
303
1
2
SW308
SW
301
SW305
SW309
IR
DIS-
DATA
DIS-
STB
GND
DIS
-CL
K
ROT
_A
ROT
_B
1
2
SW307
+5V
LE
D301
RED
LE
D
R30
91K
KEYS
BOARD
1
2
10
9
7
6
3
4
5
B301
BZ1
L32
6
200UH
R302
5K6
R303
5K6
R304
10
CE
302
220U/35V
D30
2
FR
104
R3
0
5
220
R3
0
6
220
C30
4
473M
+5V
Q30
1
D965
Q302
D965
C30
3
104
VF2~
VF1~
ECO
ROT
-AB
+5VLED-VOL
R3
15
10K
R316
100
ROT
-AB
+5V
C30
5
102
LE
D302
Wh
iteL
ED
LED3
03
Wh
iteL
ED
C30
1
104
K1-1
K2-1
K3-1
DZ30
2
27V
R30
7
10
R30
8
30K
DZ30
1
6V2
CE
301
47uF/16V
R301
22K
C302
104
SK1
-1
SK2
-1
SK3
-1
L30
2
60
1
L30
3
60
1
L30
4
60
1
L30
5
60
1
L30
6
60
1
L30
7
60
1
L30
8
60
1
L309
601
L310
601
LED-V
OL-
+5V-
REM
-
VFD-DAT
A-
V-G
ND-
VFD-S
TB
-
V-G
ND-
VFD-CL
K-
ROT
-AB
-
DIS-
DATA
DIS-
STB
DIS-
CLK
+5V
VF1~
VF2~
-27V
IR
LED-LG-
GND
L311
601
L31
3
60
1
L314
601
L315
601
L31
9
60
1
L320
601
L3
21
601
L3
22
601
L3
23
601
L3
24
601
L32
5
60
1
L30
1
60
1
ECO-
K1-1
K2-1
K3-1
SK1
-1
SK2
-1
SK3
-1
B
1
E
2
C
3
Q30
3
8050
D30
3
4148
R31
4
47K
CE
303
10UF
/1
0V
R313
4.7K
R31
24.
7K
LED_
VO
L
1
2
CN
303
2.0/
2P
LED
-L
G-
+5V
ST
ANDBY
LE
D
VOLU
ME
VOLU
ME
LE
D
KEYS
SC
AN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CN
302
16P
GND
V+5V
SK1
SK2
SK3
K1
K2
K3
VF1-
VF2-
-27V
-
LED-LG
1
2
3
4
5
6
7
8
9
10
CN
301
10P
-27V
ECO
LE
D_VO
L
R31
91K
ECO
R317
ROT-AB
ROT-AB
V-GND-
V-GND-
0R
R31
8
0R
D30
4
4148
R32
0
10K
B
1
E
2
C
3
Q30
4
8050
B
1
E
2
C
3
Q30
5
8050
Key Board -- Circuit Diagram
12-6
12-6
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 ...
Page 55: ......
Page 56: ......
Page 57: ......