Konica Minolta bizhub 42 - Manual (Page 37)

bizhub 42/36 2-22
2.9 Erasing data when the machine is to be discarded or use of a leased machine is terminated 2
2.9 Erasing data when the machine is to be discarded or use of a
leased machine is terminated
When access to the machine by the Administrator of the machine through the Admin Settings from the control
panel is authenticated, the machine enables setting of the operations of the Overwrite All Data, SSD Low-
level Format, and Restore All functions.
When the machine is to be discarded or use of a leased machine is terminated at the end of the leasing con-
tract, be sure to erase all data to prevent data left in the machine from leaking. Different methods of erase
apply depending on the data space. See the table below for more details.
NOTICE
Perform erase operations for all of HDD, SSD, and NVRAM.
When erase operations are performed, make sure that the operation is normally terminated for data in each
of the three different data spaces. If an error occurs during execution of the erase operations, contact your
Service Representative for appropriate action.
The Enhanced Security Mode is set to [OFF], if Overwrite All Data, SSD Low-level Format, or Restore All is
executed.
2.9.1 Setting the Overwrite All Data
The HDD Overwrite Method offers the choice of eight different modes, [Mode 1] through [Mode 8]. Overwrite
All Data takes about less than one hour in [Mode 1] at the minimum and about 9 hours in [Mode 8] at the
maximum.
0 For the procedure to call the Security Settings screen on the display, see steps 1 through 3 of page 2-7.
0 Do not leave the machine with the setting screen of Admin Settings left shown on the display. If it is
absolutely necessary to leave the machine, be sure first to log off from the Admin Settings.
0 For details of items that are cleared, see page 1-11.
Data space Erase method
HDD Overwrite All Data
SSD SSD Low-level Format
NVRAM Restore All
Mode Description
Mode 1 Overwrites once with "0x00".
Mode 2 Overwrites with "random numbers" ö "random numbers" ö "0x00".
Mode 3 Overwrites with "0x00" ö "0xff" ö "random numbers" ö verifies.
Mode 4 Overwrites with "random numbers" ö "0x00" ö "0xff".
Mode 5 Overwrites with "0x00" ö "0xff" ö "0x00" ö "0xff".
Mode 6 Overwrites with "0x00" ö "0xff" ö "0x00" ö "0xff" ö "0x00" ö "0xff" ö "random
numbers".
Mode 7 Overwrites with "0x00" ö "0xff" ö "0x00" ö "0xff" ö "0x00" ö "0xff" ö "0xaa".
Mode 8 Overwrites with "0x00" ö "0xff" ö "0x00" ö "0xff" ö "0x00" ö "0xff" ö "0xaa"
ö verifies.