Schematics, not available.
Parts, not available.

Call Infocus and if it is still a supported unit you can ship it to
them for flat rate repair of around $250.

If it is obsoleted by Infocus, time to start shopping.

A very well experienced and trained technician might be able to repair
it if the part failure is a standard part without any schematic.

Infocus is factory exchange/repair only. At one time they had a few
authorized independent repair shops in the US and you might be able to
send it off to them.