Table of Contents
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• Error chart for disk system
Error code
[Error message]
Contents
Check item and corrective action
50
1) Drive fails to be ready.
[NO READY]
a
Diskette is wrongly inserted.
a
Fit diskette in correctly.
a
Motor does not normally run.
a
Check belt and/or drive motor assembly.
a
Index detection circuit is improper.
a
Check index lamp, drive PWB, index sensor.
a
Flat cable is improperly fit in or broken.
a
Check flat cable.
a
No select signal comes at drive.
a
Check floppy disk I/O card.
a
Drive unit door (front door) is not
a
Close front door.
closed.
a
Diskette is faulty.
a
Replace diskette.
a
Write operation is attempted in write
protect state.
54
1) Drive
[UNFORMAT]
a
Head position is not aligned.
a
Replace drive unit.
(off-track state)
a
Head and amp. circuit are defective.
a
Replace drive unit and/or drive PWB unit.
2) Diskette
a
Diskette not formatted is in use.
o
Initialize again, or replace diskette
a
CRC error in
10
field.
a
10
field is broken down.
41
1) Drive
[DISK DATA
a
SEEK error
a
Check drive unit and diskette
ERROR]
Replace, if required.
a
Head shift is improper.
a
Replace drive unit.
2) Diskette
a
CRC error in data field.
a
Data field is broken down.
iO Initialize again, or replace diskette.
a
10
field is defective.
a
Data mark detection error.
-12-
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