The Auto Erase Memory function can be enabled by the following procedure.
Log in as the machine administrator from the control panel.
Select [Security Options] -> Press [OK]
Select [Auto Erase Memory Setting] -> Press [OK]
Select [On] -> Select [HDDErase]
Select the method of erasing the data from [NSA], [DoD], or [Random Numbers]. -> Press [OK]
If you select [Random Numbers], enter the number of times that you want to overwrite. Then press [OK].
Press [OK].
Press [Menu].
Log out.