Fujitsu MPG3XXXAH Product Manual page 61

c. Seek to specified cylinder
Drives the VCM to position the head to the specified cylinder.
d. Calibration
Senses and stores the thermal offset between heads and the mechanical forces on the actuator,
and stores the calibration value.
Figure 4.5
4 - 14
Physical sector servo configuration on disk surface
C141-E112-01EN
Servo frame
(96 servo frames per revolution)