Hold 1+5+9 for three-4 seconds, release to get to admin console login. Once there hit the red X key and you’ll get three key options:
1. Run Application(s)
2. Perform Calibration
3. Transfer Logs
O. Return to login screen
Select 2 from the keypad and calibration will start, informing you not to touch the screen. The screen will go black for a few seconds, return to the “do not touch screen” for a couple seconds, then revert back to the options screen above. MW tech recommends performing the calibration twice before exiting and testing the unit again.