Epson BrightLink 1485Fi 5000-Lumen Pixel-Shift Full HD Ultra-Short Throw 3LCD Interactive Laser Projector - Manual (Page 222)

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Note: For the most accurate calibration, make sure you touch the center of the circle.
Note: Make sure you are not blocking the signal between the pen and the interactive receiver (next
to the projector lens).
6. Touch the center of the next circle, then repeat. When you get to the bottom of the column, the next
circle appears at the top of a new column.
Note: If you make a mistake, press the Esc button on the remote control or control panel to go back
to the previous circle. To cancel the calibration process, press and hold the Esc button for 2
seconds.
7. Continue until all of the circles disappear.