Supervisor mode

When a Atm goes to low level money or receipt/journal printer paper, the atm should send the a status message to ATM controller or ATM monitoring to tell and update this status. With this status personal on bank center can decide to visiting the atm to replenish the money and other (take and replace paper journal/receipt with the new one, copy video security guard, maintenance, repair , etc).

To do that activity, the personil bank must set the atm to the supervisor mode or maintenance mode. Supervisor mode is your means of controlling the terminal by giving you access to a range of menus and options. These allow you to customise the terminal to your requirements, enter and change encryption keys, replenish printer and cash supplies, as well as print and reset totals of money as required.

To enter supervisor mode depend of terminal type. If the type of atm terminal is Front load terminal, usually there is switch or key on inside terminal to change mode to supervisor mode, or some terminal have supervisor key at the fascia or upper door compartement. If we open that door the terminal automatic to supervisor mode.

If we success change the mode to the supervisor mode, the screen atm should displayed menu. Some atm should enter password before enter to the supervisor menu. For every brand atm have different look up and style of supervisor menu, but the main menu such as replenish menu, maintenance menu, and configuration menu and status menu should be there. Below is supervisor menu from NCR ATM.

Replenish menu is using for changing the money at the atm. If we choose the menu the sub menu will be show. configure menu, in this menu for general or all atm is enter master key or encrypted pin block, and other configuration such entering IP address, port number. 
Diagnostic menu is utility for ATM technician or user to testing device at the atm. If we choose this menu, each menu for all device on atm will be appear. And other is status menu, this menu will be list status of atm and all device status on the ATM, another in this status menu is reset menu. Some error just need to be reset flag or status, so we can reset that error via this menu.
For ATM with rear load type , ussualy at the rear ATM have a small panel to replace function of main display of ATM, like picture below ;