You can back up the encryption key without changing the encryption setting.
The encryption key is required for data recovery if the machine malfunctions. Be sure to store the encryption key safely for retrieving backup data.
Log in as the machine administrator from the control panel.
Press [System Settings].
Press [Administrator Tools].
Press [Next] 3 times.
Press [Machine Data Encryption Settings].
Press [Back Up Encryption Key].
Specify how to back up the encryption key.
If you have selected [Save to SD Card], insert an SD card into the media slot on the side of the control panel and press [OK]. When the machine's data encryption key is backed up, press [Exit].
For details about handling and inserting the SD card, see "Inserting/Removing a Memory Storage Device", Getting Started.
If you have selected [Print on Paper], press [Start] and print out the machine's data encryption key.
Press [Exit].
Log out.