Philips MCD 728, Service Manual

Page: 16 / 41

6 - 1 6 - 1
CIRCUIT DIAGRAM - VFD BOARD
Title
SW
1
1
SW
2
2
SW
3
3
SW
4
4
DOUT
5
D
IN
6
IC
7
C
LK
8
STB
9
KEY1
10
KEY2
11
KEY3
12
KEY4
13
Vdd
14
S1/KS1
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
S1
7/
G
12
31
S1
8/
G
11
32
V
dd
33
VEE
34
S1
9/
G
10
35
S2
0/
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
IC601
uPD16311
R602 47K
R605 33
K
R60
6
33K
R60
7
33K
R60
8
33K
K4
K3
K2
K1
D602 4148
D601 4148
ST
B
1
C
LK
DATA
S1
S2
S3
S4
S5
S6
S7
S8
S9
S1 S2 S3 S4 S5 S6 S7
KS2
-2
4V
+5
V
S
S1
S2
C602
104P
R603
2.2/0.5
C604 104P
C603
104P
SW601
TACT(STBY)
V
F1
1
V
F1
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
G
10
24
G
11
25
G
12
26
S9
27
S1
0
28
S1
1
29
S1
2
30
S1
3
31
S1
4
32
S1
5
33
S1
6
34
V
F2
35
V
F2
36
VFD701
NE-1300CD-3.G
S10
S11
S12
S1
3
S1
4
S1
5
S1
6
G
12
G
11
G
10
G1 G2 G3 G4 G5 G6 G7 G8 G9
G2 G3 G4 G5 G6 G7 G8 G9 S1
2
S1
1
G
11
G
10
S8 G1 S1
0
S9 G
12
1
2
3
4
5
CN602
2.0/6P
STB1
DATA
CLK
V-GND
+5VS
1
2
3
CN601
2.0/3P
-28V
VF2-1
VF1-1
D603 4148
S3 KS3
R604
2.2/0.5
C605
104P
KS3
C601
47uF
C607
334P
C608
334P
C609
334P
C610
334P
R601
4K7
R609
10
K
R610
10
K
K1
K2
K3
K4
KS2
+5VS
SW608
TACT(CH-)
SW606
TACT(CH+)
SW604
TACT(PRE)
SW602
TACT(NEXT)
SW607
TACT(PLAY/PRESET)
SW605
TACT(STOP/BAND)
SW603
TACT(OPEN/CLOSE)
KS2
K1
K2
K3
K4
KS3
S1
3
S1
4
S1
5
S1
6
R613
1K LED601
STADBY
All parts comply with suppliey environment
note
：
protect material licf regulate by green envionment management
tolerance RES±10
％
CAP±20
％，
special parts nated beside parts