Toshiba MK4006GAH Manuale Utente

 

 

Toshiba Corporation Digital Media Network Company 

 

Page 27 of 153 

    © 2003, Copyright TOSHIBA Corporation All Rights Reserved

 

 

 

  Be sure to issue and complete the following commands for unloading before cutting off the power 
supply. 

Following table shows the specification for normal load/unload cycles. 
 

Load/unload cycle (Times) 

Environment 

600,000 Room 

temperature 

300,000 

Operational temperature range 

 
Unload is executed by the following commands : 
 

・

Standby 

・

Standby Immediate 

・

Sleep 

・

Hard reset 

 
  Load/Unload is also executed as one of the idle modes of the drive. 
 

  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.