Recalibrate touchscreen 12 System settings
Otherwise:
1. Power off the display and then power it on.
2.
Wait until the status bar at the bottom of the second startup screen is lighted more than 50%.
3.
Press both brightness control buttons at the same time.
4. Hold the two buttons down until the display beeps.
Version 7.0, Revision A CFX-750 Display User Guide 199