Epson BrightLink Pro 1470Ui User Manual page 206

The following screen appears:
Note: If Touch Calibration is disabled, make sure Power is set to On.
5. Adjust the image focus, if necessary.
6. Press Enter to select Yes.
A flashing green circle appears in the upper left corner of your projected image.
7. Touch and hold the center of the circle with your finger until the circle disappears and another circle
appears, then release it.
The circle disappears, and you see another circle below the first one.
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