On a computer connected to the same network as the printer, open a browser and enter the printer's IP address.
You can check the printer's IP address using the following menu.
Enter the administrator password to log in as an administrator.
Select the following menu.
Device Management tab > Control Panel
Select ON for the Panel Lock setting.
Click OK.
Check that
is displayed on the home screen.
When Lock Setting is enabled, you must log in as an administrator to enter a locked menu.