Security Setting
D255/D256/M281/M282
2-152
SM
10. Log out.
11. Turn OFF the main power, and then turn the main power back ON.
The machine will start to convert the data on the memory after you turn ON the main power.
Wait until the message "Memory conversion complete. Turn the power switch off." appears,
and then turn OFF the main power again.
Backing Up the Encryption Key
You can back up the encryption key by printing it.
The encryption key is required for data recovery if the printer malfunctions. Be sure to
store the encryption key safely for retrieving backup data.
1. Log in as the machine administrator from the control panel.
2. Select [Security Options] -> Press [OK]
3. Select [Machine Data Encryption] -> Press [OK]
4. Select [Back Up Encryption Key] -> Press [OK]
5. Select [PrtOnPpr] -> [Print]
6. Press [Menu].
7. 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
Summary of Contents for M281 Series
Page 1: ...D255 D256 M281 M282 SERVICE MANUAL ...
Page 16: ......
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Page 21: ...PRODUCT INFORMATION REVISION HISTORY Page Date Added Updated New None ...
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Page 189: ...PREVENTIVE MAINTENANCE REVISION HISTORY Page Date Added Updated New None ...
Page 190: ......
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Page 278: ...Laser Unit MP 501 601 D255 D256 M281 M282 4 84 SM 6 Remove the laser unit A ...
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Page 442: ...Self Diagnostic Mode D255 D256 M281 M282 6 4 SM ...
Page 563: ...DETAILED DESCRIPTIONS REVISION HISTORY Page Date Added Updated New None ...
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Page 585: ...Fusing Unit SM 7 21 D255 D256 M281 M282 Detailed Descriptions ...
Page 587: ...Paper Exit Unit SM 7 23 D255 D256 M281 M282 Detailed Descriptions ...
Page 590: ...Paper Feed Unit D255 D256 M281 M282 7 26 SM ...
Page 593: ...ARDF MP 501 601 Only SM 7 29 D255 D256 M281 M282 Detailed Descriptions ...
Page 595: ...ARDF MP 501 601 Only SM 7 31 D255 D256 M281 M282 Detailed Descriptions ...
Page 599: ...D255 D256 M281 M282 SERVICE MANUAL APPENDICES ...
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Page 605: ...APPENDIX SPECIFICATIONS REVISION HISTORY Page Date Added Updated New None ...
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Page 633: ...PREVENTIVE MAINTENANCE TABLES REVISION HISTORY Page Date Added Updated New None ...
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Page 807: ...SOFTWARE CONFIGURATION REVISION HISTORY Page Date Added Updated New None ...
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