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2.1 Device Configuration
C141-E050-02EN 2-3
0
4
5
Head
MHC2040AT
2
1
3
0
Head
MHC2032AT
2
1
3
0
Head
MHD2032AT
3
1
2
0
Head
MHD2021AT
1
2
Figure 2.2 Configuration of disk media heads
(3) Spindle motor
The disks are rotated by a direct drive Hall-less DC motor.
(4) Actuator
The actuator uses a revolving voice coil motor (VCM) structure which consumes
low power and generates very little heat. The head assembly at the edge of the
actuator arm is controlled and positioned by feedback of the servo information
read by the read/write head. If the power is not on or if the spindle motor is
stopped, the head assembly stays in the specific CSS zone on the disk and is fixed
by a mechanical lock.