Preventive Maintenance; Specifications - Panasonic JU-475-4 Service Manual

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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