Security Settings
SM 2-137 D0AP/D0C4/D0C5/D0C6/M0BQ/M0D1
• Encrypted data will be deleted.
• User settings will be cleared.
1. Prepare an SD card.
2. Create a directory named “restore_key” inside the root directory of the SD card. Then, save
the “nvram_key.txt” file using the following name:
/restore_key/nvram_key.txt
3. Create a text file and write "nvclear".
• Write this string at the head of the file.
• Use all lower-case letters.
• Do not use quotation marks or blank spaces.
• It is judged that a forced start has been selected when the content of "nvclear" is
executed and the machine shifts to the alternate system (forced start).
4. Confirm that a message is displayed on the LCD telling to insert the SD card that contains
the encryption key.
5. Turn the machine off.
6. Insert the SD card that contains the encryption key into the lower media slot on the back of
the machine.
7. Turn the machine on.
The machine automatically clears the HDD encryption.
8. Turn OFF the main power when the machine has returned to normal status.
9. Remove the SD card from the media slot.
10. Turn the machine on.
11. Memory clear SP5-801-xx (Exclude SP-5-801-001: All Clear and SP-5-801-002: Engine),
and clear SP5-846-046: the address book.
12. Set necessary user settings in User Too l s ke y.
SP descriptions
• SP5-878-002 (Option Setup: HDD Encryption)
Executes the setup for encryption.
• SP5-990-005 (SP Print Mode: Diagnostic Report)
Prints the configuration sheets of the system and user settings: SMC.
Make sure to shut down and reboot the machine once before printing the SMC. Otherwise,
the latest settings may not be collected when the SMC is printed.
• SP5-801-001 (Memory Clear: All Clear)
Resets all correction data for process control and all software counters, and returns all
modes and adjustments to their default values.
• SP5-801-002 (Memory Clear: Engine)
Clears non-volatile memory of engine.
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