Casio CTK-731 Service Manual

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FDD UNIT (DF354H064A)
FDD Specifications:
1 Memory Capacity (under un-format) : 1.6 MByte
2 Density of track : 5.33 track/mm (135 TPI)
3 Number of track : 77 track/side
4 Number of head : 2
5 Rate of data transfer : 500 kbps
6 Access time (between two tracks) : 3 m seconds
7 Compensation of writing data : 125 n second (all tracks)
8 Rotation speed : 360 Min
-1
(rpm) ± 1.5 %
FDD Interface:
Host system Drive
CN2 connector
Index8
Density Select4
Drive Select 1 12
Motor ON 16
Direction 18
Step 20
Write Data 22
Write Gate 24
Track 0026
Write Protect28
Read Data30
Side 1 Select 32
Disk Change34
+5 V
DC.GND
System Frame GND.
Drive Frame GND.
0 Ω
1
+5 V Return2
+5 V Return3
N.C 4
CN1 connector
Signal GND
GND Pin Numbers of CN2:
1, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33
Non connected Pin Numbers of CN2:
2, 6, 10, 14 (Pin #3 is removed to prevent erroneous insertion)

Casio CTK-731 Specifications

General

Brand	Casio
Model	CTK-731
Category	Electronic Keyboard
Language	English