1. Press 2 of left bottom BOX keys (
) simultaneously and tap the touch screen 5 times.
2. Then Touch calibration tool will run.
3. Press corner of the diagram (green spot inside of contour line) with touch pen for 2~3 seconds (keep the touch pen vertical and w/o movement)
4. Move to other points after finishing calibration in one point
5. If it does not work during the calibration, you can exit by press ESC key. In this case, previous calibration will be saved.