InFocus LP 840/LP 850 User Manual page 24

Lamp won't turn on, Temp LED solid red (page 46)
solid
temp
red
lamp
Lamp won't turn on, Lamp LED blinking red
(page 46)
temp
blinking
lamp
red
Make sure vents aren't blocked; allow
projector to cool for one minute
Lamp must be replaced (page 40)
24
Unplug projector; wait one minute; plug in
projector and turn it on: lamp lights
Lamp turns on