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C141-E034-02EN2 - 2
(1) Disk
The outer diameter of the disk is 95 mm. The inner diameter is 25 mm. The number of disks used
varies with the model, as described below. The disks are rated at over 40,000 start/stop
operations.
MPA3017AT: 1 disk
MPA3026AT: 2 disks
MPA3035AT: 2 disks
MPA3043AT: 3 disks
MPA3052AT: 3 disks
(2) Head
The heads are of the contact start/stop (CSS) type. The head touches the disk surface while the
disk is not rotating and automatically lifts when the disk starts.
Figure 2.2 illustrates the configuration of the disks and heads of each model. In the disk surface,
servo information necessary for controlling positioning and read/write and user data are written.
Numerals 0 to 5 indicate read/write heads.