Calibrate the Touch Screen - With the Help of a Keyboard

For doing this, proceed as follows:

    1
    Switch off machine at main switch and wait until it is currentless (approx. 60 seconds).
    When the process is complete, the touch screen becomes dark.
    2
    Connect a keyboard to the USB socket at the display.
    2. 3
    Turn the main switch at the front of the machine to 1.
  2. The STOLL logo is displayed.
    3. 4
    The System Control Unit window is displayed.
    As soon as the control is ready, the icon (1) changes its color from red to green.
    4. 5
    Enter the "Ctrl + T" key combination on the keyboard.
  4. The Calibrating Touch Screen window appears.
  5. Calibrating touch screen window
    6. 6
    Tap on the target circles one after another (top left, bottom right, top right).
    7
    Finally tap the Accept button.
  2. The calibration of the touch screen is complete.