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SCHEMATIC DIAGRAM-6
A
MAIN 2/4 CIRCUIT
+5IP
IP101
CN102
N10
+5IP
1
DATA
2
SCK
3
E
4
CPRST
5
SUS
6
SUSTAIN
+5IP2
IP102
CN108
N10
+5IP2 1
+5IP2 2
E 3
E
4
TOC.SNS
CP.CLK
CP.DATA
CP.GATE
CN101
E
15
E
14
+5D
+5D
13
DCH
12
SIDE
11
RDT
10
WPRT
9
TO
TRK0
8
FDD
WGA
7
WDT
6
STEP
5
DIR
4
MOT
3
E
2
IP
1
CN104
FRM
A
12
LOAD
11
B
CP
10
C
VDD
9
VSS
8
DOFF
D
7
6
E
D0
5
F
D1
4
G
D2
3
H
D3
2
VEE
1
VLCD
NOTE:
The number which noted at the connectors on the schematic diagram as
"SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"
indicates the schematic diagram serial number located on the left corner in the schematic diagram.
IC102
TC7WT241FU
+5D
DUAL 3 STATE
BUFFER
+5D
R105
R106
R103
4.7K
4.7K
47
R104
47
C101
C104
0.1
47P
C103
47P
R134
4.7K
GND
+5D
R107
1 2 3 4 5
10K
R109
C108
100
0.01
R102
100
+5D
C102
6V100
Z102
47x4
Z103
47x4
Z104
47x4
Z101
1Kx4
+5D
+5IP
C132
0.1P
+3.3D
1
VCC
8
+5D
G1
R116
2
A1
G2
7
4.7K
Y2
Y1
3
6
GND
A2
4
5
IC104
TC7WT241FU
DUAL 3 STATE
BUFFER
VCC
1
G1
8
A1
G2
2
7
3
Y2
Y1
6
4
GND
A2
5
VCC
IC103
R113
TC7S14FT85L
10K
SCHMITT
TRIGGER
+5D
INVERTER
C105
C106
C107
0.1
0.033
0.033
32
31
30
29
28
27
33
TRK0
34
WGATA
35
WDATA
36
(ENDB1) ME3
BGND
37
38
(ENBL0) ME2
39
NC (LSTRB)
40
(CA2) SIDE
41
(CA1) STEP
IC101
D72070GF3BE
42
(CA0) DIR
FLOPPY DISC
43
WE1
CONTROLLER
44
WE0
45
BGND
46
DS2
47
DS1
48
DS0
49
INDEX
50
DS3
R101
(SEL)HOLD
1K
51
52
53
54
55
56
57
+5D
C110
0.1
R108
47
C111
10P
R115
4.7K
+5D
+5D
Q101
Q102
UN511NTX
UN511NTX
Q103
UN5216TX
C112
C113
1800P
0.022
+5D
R111
R112
1K
6.8K
C117
26
25
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
4
B
A0
3
CS
2
WR
1
RD
R114
58
59
60
61
62
63 64
100
C115
C116
100P
100P
R110
1M
X101
24MHz
C114
10P
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