Sharp FDD-412A - Page 89

FDD412A/B
READ ERROR
Retry read/
write operation .
Disk efror YES
Occur inter=>-(B)
mittently?
on the same
track,
7
NO
Copy data
from error
disk to
another disk
and initial-
ize error
Read error
NO ; a
6ccur inter-
mittently.?
Continue
job exe-
cution.
Set another
disk and try
read/write
operation.
Disk is
defec- _
<Ctracks 3
or more?
Errors
6ccur
on
the
NO
Error NO
eccurred?
FDD error is
suspected.
track none?
Copy data
from error
disk
to
oe
another
disk
Specify
;
aie
:
;
inadvertent
and
continue
defective
;
handling
tracks and
make another
initializa-
tion.
JQP
Cee
(erasure
tion.
See 5.2
"Media-Related
Trouble" and
continue
troubleshoot-—
ing.
magnet) is
L[suspected.
Prepared
way
to
separate
errors
at
stage
@)
Referring
to
5.2,
"Media-Related
Troubles",
use
a
synchroscope
to
observe
waveshapes
from
error
addresses
on
the
disk.
Fig. 5.6 Read Error (1)