You can set the administrator password from the printer's control panel.
When the password policy is available, enter a password that meets the requirement.
You can make settings for the password policy by selecting Settings > General Settings > System Administration > Security Settings > Password Policy.
Select Settings on the printer's control panel.
Select General Settings > System Administration > Security Settings > Admin Settings.
Select Admin Password > Register.
Enter the new password.
Enter the password again.
You can change or delete the administrator password when you select Change or Restore Default Settings on the Admin Password screen and enter the administrator password.