Security Setting
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9. Select the backup method.
If you have selected [Save to SD Card], load an SD card into the media slot on the side of the control panel
and press [OK]. After the machine's data encryption key is backed up, press [Exit].
If you have selected [Print on Paper], press the [Start] key. Print out the machine's data encryption key.
10. Press [Exit].
11. Log out.
Encryption Key Restoration
How to restore the old encryption key to the machine
The following message appears after the controller board is replaced. In such a case, it is necessary to restore
the encryption key to the new controller board.
To do this, follow the procedure below.
1. Prepare an SD card that has been initialized in FAT16 format.
2. Using a PC, create a folder in the SD card and name it "restore_key".
3. Create a folder in the “restore_key” folder and name it the same as machine’s serial number,
“xxxxxxxxxxx” (11 digits).
4. Create a text file called "key_xxxxxxxxxxx.txt" and save it in the "xxxxxxxxxxx“ folder. Write the
encryption key in the text file.
/restore_key/xxxxxxxxxxx/key_xxxxxxxxxxx.txt
• Ask an Administrator to enter the encryption key. The key has already been printed out by the
user and may have been saved in the "key_xxxxxxxxxxx.txt" file.
5. Turn ON the main power.
6. Confirm that a message is displayed on the LCD telling to insert the SD card that contains the encryption
key.
7. Turn OFF the main power.
8. Insert the SD card that contains the encryption key into SD card slot 2 (the lower slot).
9. Turn ON the main power.
• The machine will automatically restore the encryption key to the flash memory on the controller
board.
10. Turn OFF the main power when the machine has returned to normal status.
11. Remove the SD card from SD card slot 2.
How to do a forced start up with no encryption key
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