Philips MCD712 - VFD Display Board Circuit Diagram

8-1
8-1
VFD Display Board -- Circuit Diagram
R254
47K
R255
33K
R256 33K
R257 33K
R258 33K
K4
K3
K2
K1
D205
4148
D207 4148
S1
S2
S3
S4
S5
S6
S7
S8
S9
S1 S2 S3 S4 S5 S6 S7
KS2
+5V
S1
S2
C217
104P
R229
0.5/0. 5
C203
104P
C200
104
SW 20 0
ST A N DB Y
VF1
1
VF1
2
S1
3
S2
4
S3
5
S4
6
S5
7
S6
8
S7
9
S8
10
G1
11
G2
12
G3
13
G4
14
G5
15
G6
16
NC
17
NC
18
NC
19
NC
20
G7
21
G8
22
G9
23
G10
24
G11
25
G12
26
S9
27
S10
28
S11
29
S12
30
S13
31
S14
32
S15
33
S16
34
VF2
35
VF2
36
VFD200
NE-1300CD-3.G
S10
S11
S12
S13 S14 S15 S16 G12 G11 G10
G1 G2 G3 G4 G5 G6 G7 G8
G9
G2 G3 G4 G5 G6 G7 G8 G9 S12 S11 G11 G10 S8 G1 S10 S9 G12
-28V
VF2-1
VF1-1
D206 4148
S3 KS3
R228
0.5/0. 5W
C201
104
KS3
R259
4K 7
R231
10K
R232
10K
K1
K2
K3
K4
KS2
+5V
SW 20 4
SOURCE
SW 20 3
PRERET-
SW 20 2
PRERET+
SW 20 1
OPEN
SW207
PRE
SW 206
PL AY
SW205
PROG RAM
KS2
K1
K2
K3
K4
KS3
S13 S14 S15
S16
R208
4.7K
LED200
ECO-POWER
REM
1
GND
2
Vcc
3
S20 0
REMOT E
REM
GND
+5V
R260
47
C219
47uF
USB LED
USB LED
+5V
1
2
10
9
7
6
3
4
5
B200
BZ1
L201
200UH
C232
470/16V
R226
1K
R227
1K
R203
100
C233
104
C235
220U/35V
D208
FR104
R205
100
R204
100
DZ200
6.2V/1W
D204
4148
C234
473M
+5V
ECO-
po
wer
-28V
VF2-1
VF1-1
+5V
1
2 3
4
CN208
TO-USB
SW208
DSC
SW 20 9
NES
D209
4148
DS-STB1
DS-DAT
DS-CLK
DS-STB1
DS-DAT
DS-CLK
REM
+5V
ECO-POWER
GND
1
2
3
4
5
6
7
CN?
7P
R210
15
R211
10K
R224
X
R206
0
R207
0
C202
104
C204
104
C205
47uF
D201
4001
SW 1
1
SW 2
2
SW 3
3
SW4
4
DOUT
5
DIN
6
IC
7
CLK
8
ST B
9
KEY1
10
KEY2
11
KEY 3
12
KEY4
13
Vdd
14
S1/ K S1
15
S2/ K S2
16
S3/ K S3
17
S4/ K S4
18
S5/ K S5
19
S6/ K S6
20
S7/ K S7
21
S8/ K S8
22
S9/ K S9
23
S10 / K S10
24
S11 / K S11
25
S12 / K S12
26
S13
27
S14
28
S15
29
S16
30
S17/G12
31
S18/G11
32
Vdd
33
VEE
34
S19/G10
35
S20/G9
36
G8
37
G7
38
G6
39
G5
40
G4
41
G3
42
G2
43
G1
44
Vdd
45
LED5
46
LED4(BBE)
47
LED3(POWER)
48
LED2(FANCT)
49
LED1(7507RST)
50
Vss
51
OSC
52
IC203
uPD16311
Q208
8050
Q209
8050