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there isn't one. you need to see the menu. but what color is the led and is it blinking?
green- all is well
1 time- lamp not striking after 5x.
2 times- lamp has more than 3000 hrs. replace lamp.
3 times- lamp failure. replace lamp.
4 times- fan failure. shuts down.
5 times- undiagnosed error. possibly ballast or colorwheel.
if the colorwheel won't spin, the lamp won't light. when you turn on the projector, do you hear a high-pitched whir? if not, the colorwheel needs replacing.
the berings on the colorwheel are failing. i suggest replacing it. also, the discoloration is baked-on dust. the wheel can be cleaned, but it's no recomended, due to the finish on the glass and the fact that the heat has probably weakened the glue holding the glass on the wheel. it's the same glue holding the light tunnel together, and it's collapse is probably causing the faint image. the parts aren't all that expensive, but you can only get them through an infocus authorized service center. check the website for one.
more then likely the ballast has gone bad and the lamp is not getting the right voltage to fire. Only other thing you can do is remove the lamp the turn the power on and check the voltage at the connector. This will not check the triggering voltage mine you only the lower operating voltage. But since you have replace the bulb with a known good one I'm betting on the ballast is bad.
I can almost guarantee that your bulb is out. We probably have 20-30 projectors of this model in the school and bulb life averages a little over 100 hours even though they advertise 3000 hours. Infocus has been known most for their poor cooling system to the bulb over the years and most owners won't get the life expectancy of the bulb. If you remove the bulb you will find a small restrictive vent screen on the bulb and commonly it will be filled with collected dust. This model really doesn't have any removable/cleanable filtering system installed - again a cheap and poorer design then many other brands. We have decided not to purchase infocus projectors anymore in the district. They were a seller at one time because they were cheap, but because they don't last they weren't really a deal after all. Sometimes though a ballast for a projector will go out and it will be unable to power up a good bulb. I wouldn't consider fixing it because of their overall poorer reliability. If your looking for a cheap but more reliable brand of projectors I'd steer towards Epson projectors. They tend to have lower costing projectors and bulbs then most and I have seen in person that they last well above their advertised lamp hours in different models. Their are many good brands out there but InFocus is not really one of them - they have under built projectors and poor phone support.
Hope this helps a little.