I'm helping my daughter's school on a science project. Basically we
need to remove the lamp on a DLP projector and shine laser light into
the optics. However after we removed the lamp and placed the cover
back the DLP projector would not start. It seems that there's a
protection mechanism that recognizes the fact that the lamp is not
there. How do we disable this mechanism?

The projector in question is Infocus LP120.

Many thanks

Hans