InFocus IN3128HD User Manual page 18

Problem
The video embedded in my PowerPoint presentation
does not play on the screen
Lamp won't turn on, the projector is overheating
Overheating
indicator
Solution
Turn off the internal LCD display on your laptop
Make sure vents aren't blocked, turn off the projector
and allow it to cool for one minute
17
Result
Embedded video plays correctly
Lamp turns on