7. PREVENTIVE
MAINTENANCE
No
preventive maintenance
is
necessary
for
any FDD
under
normal conditions.
However
if
adjustments
are
necessary,
the
procedures in this manual must be
followed.
• Adjustments (Refer
to
Table 8-1)
(1)
Make
a
read/write
head radial adjustment
at
the
specified track. (Sides 0,
1)
(2)
Make
an index burst
adjustment
at
the
specified track. (Sides 0, 1)
(3)
Make
an
azimuth
measurement
at
the
specified track. (Sides 0, 1)
CAUTION
Do
not
write
when
using
alignment
diskette. Check
that
write
protect sensor
is
properly
operating
with
a
data
diskette.
Note:
Section 9 describes
the
adjustment procedure in detail.
8. SPECIFICATIONS
Table 8-1 Specifications
.
MINI
(a)
type
Drive
motor
is
dual speed type.
Item
Parameter
1
2
3
4
5
6
7
8
9
10
Head load
time
.
MINI
((3)
type
Drive
motor
is
fixed speed type. (360 rpm)
Item
2
3
4
5
6
7
8
9
10
Parameter
Index period
Output
level
Modulation
Resolution
Radial AliQnment
Azimuth
Index burst
Track 0
Asymmetry
Head load
time
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