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4. THEORY OF OPERATION
4.1
GENERAL
This section consists of three parts. The first concerns major assembles of the device.
The second takes up the magnetic head and magnetic disk. These are part of the disk
enclosure, however, they are explained below because they are closely related to the
electric control portion. The last describes electric control such as interface, R/W, etc.
4.2
OPERATION OF MECHANICAL PORTION
4.2.1
Disk Enclosure
In the disk enclosure (DE), disks, spindle, actuator, head, etc., are protected by
sealed plastic cover. Each of these parts can be seen through the plastic cover. The
disk enclosure is sealed at the factory after assembling, and must not be opened in
the field.
The head preamplifier
(PCB)
is installed outside the plastic cover and is an individual
maintenance part.
Band Actuator/Head POSitioning Mechanism
Sealed Cover
Control PCB
Fig. 4.1 Appearance of the Unit
B03p·4605·0003A .... B
4·1
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