Restricting Operations of the Customer Engineer without the Supervision of the Administrator
You can restrict the customer engineer's access to the service mode when performing inspection or repair.
A customer engineer needs permission from the administrator to use the service mode. This ensures that the machine cannot be operated without the supervision of the administrator.
Log in to the machine as the administrator on the control panel.
On the Home screen, press [Settings].

On the Settings screen, press [System Settings].

Press [Settings for Administrator]
[Security]
[Service Mode Lock].
From the list next to Service Mode Lock, select [On].

Press [OK].
Press [Home] (
), and then log out of the machine.