InFocus IN3114 User Manual page 21

Problem
The video embedded in my PowerPoint presentation
does not play on the screen
Lamp won't turn on, Temperature light is on
Temperature light
Solution
If your computer is using the projector's DisplayLink
connector, see the DisplayLink Software User's Guide
for video troubleshooting information.
Turn off the internal LCD display on your laptop
Make sure vents aren't blocked, turn the projector off
and allow it to cool for one minute.
20
Result
Embedded video plays correctly
Lamp turns on