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SCHEMATIC DIAGRAM-7
A
MAIN CTRL CIRCUIT
CN102
L
VD7
VD7
1
1
VD6
VD6
2
2
K
VD5
VD5
3
3
J
VD4
VD4
I
4
4
VDD
VDD
5
5
+3.3D
VDD
VDD
6
6
VD3
VD3
7
7
H
VD2
VD2
8
8
G
VD1
VD1
F
9
9
VDD
VDD
E
10
10
E
E
11
11
E
E
12
12
DISP
DISP
13
13
C
XCK
XCK
14
14
D
LP
LP
B
15
15
YD
YD
16
16
A
E
E
17
17
E
E
18
18
CPRST
CPRST
19
19
CPCLK
CPCLK
20
20
CPDATA
CPDATA
21
21
+5D
+5D
22
22
+5D
+5D
23
23
+5D
E
E
24
24
E
E
25
25
E
E
26
26
FS1
FS1
27
27
M
FS2
FS2
28
28
N
FC3
FC3
O
29
29
FC4
FC4
P
30
30
FC1
FC1
31
31
Q
FC2
FC2
32
32
R
+5MI
+5MI
33
33
J
CN103
E
1
E
2
E
3
KS3
4
M
KF3
L
5
KS2
K
6
KF2 7
J
KS1
8
I
KF1
9
H
KS0
G
10
KF0
F
11
E
KB4
12
KB3
13
D
KB2
14
C
B
KB1
15
A
KB0
16
E
17
E
18
+5D
19
+5D
20
+5D
DCH
21
SIDE
22
RDT
23
WPRT
24
TRK0
25
WGA
26
WDT
27
STEP
28
DIR
29
MOTOR
30
INDEX
31
E
32
E
33
IC102
TC7WT241FU
+5D
DUAL 3 STATE
BUFFER
1
G1
R106
R107
R104
2
A1
4.7K
4.7K
47
3
Y2
GND
4
R105
47
C102
C105
0.1
47P
C104
47P
GND
R108
1 2 3 4 5
10K
R110
C109
100
0.01
R103
100
+5D
C103
6.3V100
Z102
47x4
Z103
47x4
Z104
47x4
Z101
R102
1Kx4
1K
+5D
+3.3D
VCC
8
+5D
R117
R116
G2
7
4.7K
4.7K
Y1
6
A2
5
IC104
TC7WT241FU
DUAL 3 STATE
BUFFER
1
VCC
8
G1
A1
G2
2
7
3
Y2
Y1
6
4
GND
A2
5
VCC
IC103
R114
TC7S14F
10K
SCHMITT
TRIGGER
+5D
INVERTER
A
B C
C106
C107
C108
0.1
0.033
0.033
32
31
30
29
28
27
26
25
33
TRK0
34
WGATA
35
WDATA
36
(ENBL1) ME3
37
BGND
38
(ENBL0) ME2
39
NC (LSTRB)
40
(CA2) SIDE
41
(CA1) STEP
IC101
D72070GF3BE
42
(CA0) DIR
FLOPPY DISC
43
ME1
CONTROLLER
44
ME0
45
BGND
46
DS2
47
DS1
48
DS0
49
INDEX
50
DS3
(SEL)HOLD
51
52
53
54
55
56
57
58
59
+5D
C111
0.1
R109
47
C112
10P
+5D
+5D
Q101
Q102
UN511NTX
UN511NTX
Q103
D
UN5216TX
C113
C114
1800P
0.022
+5D
R112
R113
1K
6.8K
C118
24
23
22
21 20
0.1
19
TC
18
DMARQ
17
IMT
16
(5V)DVDD
15
DB7
14
DB6
13
DB5
12
DB4
11
DGND
10
DB3
9
DB2
8
DB1
7
DB0
6
D
A2
C
5
A1
B
4
A0
3
CS
2
WR
1
RD
R115
60
61
62
63 64
100
C117
C116
100P
100P
R111
1M
X101
24MHz
C115
10P
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