I would like to thank all the responders to my request for help in finding service literature for the Proxima DP8200X. I have 25 years of A/V repair experience and have attended the Sharp LCD Projector repair training. It's sad that Proxima (Infocus)(Ask/Proxima) etc., does not support non-warranty repair facilities. It appears that NEC is fast becoming the LCD Projector of choice.
It is also sad that the DP8200X that I am working on is only out of warranty by 2 months. The lamp had not yet been replaced. I estimate that this projector only has less than 800 hours on it. By the way, I have cleaned the filter and changed the lamp out. No change in behavior was noticed. Since the power LED does not show a standby status at all, it makes think its power supply related. Changing the power supply would be about $800.00 and may not repair it. Most LCD projectors also have a separate power/ballast board. Without any service literature I'm not sure if the repair of this projector will be justified at this point.
Again, thanks to all that reponded. Good hunting!!