D311
KEY
CIRCUIT
DIAGRAM
S506
10K
RMC
CLK
STB
4.7K
1N4148
0.1uF
180
S503
1K
10K
GND
4.7K
S1
DATA
1N4148
S507
S502
4.7K
5V
S504
10K
10
S505
S2
S3
1N4148
+5V
100U/6.3V
56K
1N4148
0.1uF
100U/6.3V
S501
10K
4.7K
4.7K
power
R502
R507
R506
XP500
R515
10
C504
R509
V500
VFD14-0501F
32
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
4
5
6
7
8
1
2
F2
F2
P1
P2
P3
P4
P5
P6
P7
P8
P9
P1
0
P1
1
P1
2
P1
3
P1
4
P1
5
G5
G4
G3
G2
G1
F1
F1
C502
NEXT
R508
PAUSE
R516
R504
PLAY
R511
R510
R505
RMC500
1
2
3
RMC
GND
VCC
VD502
XP500
D500
PT6320
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
21
23
24
25
26
27
28
29
30
31
32
34
35
36
37
38
39
40
41
42
11
22
33
43
44
SW1
SW2
DOUT
DIN
NC
CLK
STB
VCC
KEY1
KEY2
VD
D
S1
S2
S3
S4
S5
S6
S7
S8
S9
S11
S12
S13
S14
S15
S16
S17
S18
VDD
VEE
G7
G6
G5
G4
G3
G2
G1
VD
D
LE
D
1
KEY3
S1
0
S19
VSS
OS
D
POWER
R512
33
VD501
R513
PREV
VD504
STOP
LED
R501
OPEN/CLOSE
C502
R503
C501
VD503