Toshiba MK6017MAP - Manual (Page 25)

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Copyright © 2000 Toshiba corporation. All rights reserved.
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9.6 Load/Unload
Be sure to issue and complete the following commands for unloading before cutting off the power
supply.
300,000 times of normal Load / Unload can be performed by a command.
Unload is executed by the following commands :
Soft Reset
Standby
Standby Immediate
Sleep
If the power supply is cut when the head is on a media, Emergency Unload is performed by routing the
back-EMF of SPM to the voice coil. In this case, Emergency Unload is performed 20,000 times
maximum. Emergency Unload should be used only when the host-system cannot perform normal
operation.