Ricoh M281 Series Service Manual page 182

Security Setting
4. Confirm that a message is displayed on the LCD telling to insert the SD card that
contains the encryption key.
5. Turn OFF the main power.
6. Insert the SD card that contains the encryption key into SD Card Slot 2 (the lower slot).
7. Turn ON the main power.
8. Turn ON the main power, the machine automatically clear the HDD encryption.
9. Turn OFF the main power when the machine has returned to normal status.
10. Remove the SD card from SD Card Slot 2.
11. Turn ON the main power.
12. Execute SP5-801-xx (Exclude SP5-801-001: All Clear and SP5-801-002: Engine) to
resets NVRAM data to the default settings.
13. Execute SP5-846-046 to clear the address book information.
14. Set necessary user settings from the [Menu] key.
D255/D256/M281/M282 2-154 SM