5.2
Head Cleaning on Field Applications
Head cleaning is recommended at user's sites, especially when
used in severe environments, because the heads may accumulate
dust in the air and magnetic coating material of the disk,
causing chance of error increase and/or scratch on the disk
surface .
Recommended schedules and procedures are as follows:
1)
Cleaning Schedules
(1)
Periodical cleaning using wet type cleaning disk.
i.
Once a month for normal usage in normal
environments.
ii.
Should be increased to about once a week when
used in severe environments such as dusty area,
high humidity, high and low extreme temparatures.
Low temperature such as 5 to 10°C (41 to 50°F)
under high humidity is most severe for diskettes.
iii.
Higher frequency for brand new drives would be
recommended, for about once a week.
Better
matchning between head and medium would be
produced by a long time use, as experienced.
(2)
When frequent errors are detected.
(Wet or dry type
may be used.)
(3)
When scratch (es) are found on the medium surface.
(Wet or dry type may be used.)
2)
Recommended Head Cleaning Material
(1)
Wet type
Innovative Computer Products*, Head Cleaning Kit
(or equivalent).
*9174 Deering Ave., Chatsworth, CA 91311
(213) 998-24 00/TWX 910-493-2188
(2)
Dry type
To be supplied by Mitsubishi representatives.
No
substitutions would be allowable unless accepted
by factory test.
Summary of Contents for M4853
Page 1: ...5 25 INCH FLEXIBLE DISK DRIVE MODEL M4853 MAINTENANCE MANUAL STANDARD MITSUBISH ELECTRIC ...
Page 5: ...FIGURE 2 ...
Page 9: ...INDEX TPD14 FIGURE 4 ...
Page 11: ...FIGURE 5 ...
Page 14: ...FIGURE 7 ...
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Page 27: ...FIGURE 7 1 H and R Jumper Options ...
Page 30: ...Nota See Section 7 17 for description of this unmarked option ...
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Page 48: ...TJ2 630232A H 5 25 INCH FLEXIBLE DISK DRIVE M4853 ILLUSTRATED PARTS LIST ...
Page 50: ...M4853 F l e x i b l eD i s k D r i v e ...
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Page 52: ...F i g u r e 1 F l e x i b l e D i s k D r i v e ...
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Page 54: ...F i g u r e 2 Medianism Assy ...
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Page 63: ...5 25 INCH FLEXIBLE DISK DRIVE Differences Between M4853 and M4853 1 ...
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Page 74: ...REGULAR MAINTENANCE 5 ...
Page 75: ...5 2 He a d C l e a n i n g on field a p p l i c a t i o n s ...
Page 78: ... INDEX Figure 4 ...
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Page 94: ...D M4853 1 Flexible Disk Drive 2 ...
Page 97: ...Figure 3 1 Mechanism Assy 1 5 ...
Page 99: ...Figure 3 2 Mechanism Assy 2 7 ...
Page 101: ...Figure 4 Carriage Assy 9 ...
Page 106: ...Figure 8 Flexible Disk Drive Wiring Diagram 14 ...