Ricoh Aficio MP C5502 User Guide - Page 554

4. Preventing Leakage of Information from Machines Methods of overwriting You can select a method of overwriting from the following: • NSA Temporary data is overwritten twice with random numbers and once with zeros. • DoD Temporary data is overwritten with a fixed value, the fixed value's complement, and random numbers. When completed, the overwriting is then verified. • Random Numbers Temporary data is overwritten multiple times with random numbers. The number of overwrites can be selected from 1 to 9. • The default method for overwriting is "Random Numbers", and the default number of overwrites is 3. • NSA stands for "National Security Agency", U.S.A. • DoD stands for "Department of Defense", U.S.A. Using Auto Erase Memory • When Auto Erase Memory is set to [On], temporary data that remained on the hard disk when Auto Erase Memory was set to [Off] might not be overwritten. • If the main power switch is turned off before Auto Erase Memory is completed, overwriting will stop and data will be left on the hard disk. • Do not stop the overwrite mid-process. Doing so will damage the hard disk. • Should the main power switch be turned off before Auto Erase Memory is completed, overwriting will continue once the main power switch is turned back on. • If an error occurs before overwriting is completed, turn off the main power. Turn it on, and then repeat from step 1. 1. The machine administrator logs in from the control panel. 2. Press [System Settings]. 3. Press [Administrator Tools]. 4. Press [ Next] twice. 110