Mitsubishi Electric GOT SIMPLE Series Operation Manual page 386

Touch panel calibration operation
Touch [+] displayed on the screen with the finger one by one to make the setting.
29 MAINTENANCE
384
29.1 Touch Panel Calibration
1.
Touch the center of [+] displayed on the upper left
precisely.
2.
Touch [+] displayed on the lower left.
3.
Touch [+] displayed on the upper right.
4.
Touch [+] displayed on the lower right.
5.
When the precise touch could not be made, touch the
[YES] button to make the setting from Step1 again.