Optoma GT750E User Manual page 44

Appendices
44
English
On Screen Messages
Temperature warning:

Fan failed:

Lamp warming:

Out of display range:

If the remote control does not work
Check the operating angle of the remote control is within ±15°

both horizontally and vertically of one of the IR receivers on the
projector.
Make sure there are not any obstructions between the remote

control and the projector. Move to within 7 m (±0°) of the projector.
Make sure the batteries are inserted correctly.

Replace batteries if they are exhausted.
