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-24V
CLK
POWER
S5
NG
GND
+5V
RMC
S1
F1
S3
DATA
CONTROL 5V
F2
STB
S2
VD506
IN4148
s506
PAUSE
R007
1K
s505
OPEN/CLOSE
R006
4.7K
c502
0.1U
R004
10K
R003
10K
s502
VOL.UP
VD504
IN4148
V501
VFD20-0605A
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
27
28
29
30
31
32
34
35
F1
F1
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
F2
F2
s507
POWER
s503
STOP
VD503
IN4148
c503
100U/6.3V
s509
MEMORY
R002
10K
UPD16311
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
39
38
37
36
35
34
33
32
31
30
29
28
27
52
51
50
49
48
47
46
45
44
43
42
41
40
SW1
SW2
SW3
SW4
DOUT
DIN
IC
CLK
STB
KEY1
KEY2
KEY3
KEY4
VCC
S1
S2
S3
S4
S6
S5
S7
S8
S9
S10
S11
S12
G6
G7
G8
S20
S19
VEE
VCC
S18
S17
S16
S15
S14
S13
OSE
VSS
LED1
LED2
LED3
LED4
LED5
VCC
G1
G2
G3
G4
G5
R011
10K
s501
FUNCTION
R010
4.7K
s508
VOL.DOWN
VD502
IN4148
R012
56K
XP501
B501
HS0038
1
2
3
RMC
VCC
GND
R009
4.7K
R008
4.7K
R005
10
S504
PLAY
c504
0.1U
H501
R001
10K
c501
100U/6.3V
DV
D
8700KNH
KEY
CIRCUIT
DIAGRAM