Epson EB-1460Ui - Manual (Page 57)

Installation Guide
56
d
Check that the screen is in focus, and then select Yes
A green dot is displayed at the top left of the projection screen.
e
Touch the center of the dot with the pen tip of the interactive pen
The dot disappears and moves to the next position.
c
Make sure you touch the center of the dot. Otherwise, it may not be positioned correctly.