Hi guys. I have an old but still working great LaserJet 9000, but today when we tried to print to it, it went into Warming Up stage and has been sitting there for at least 15 minutes. Only thing it appears to be doing is spinning the rollers that shoot the printouts out. Any ideas what might be causing this or how to fix it? It ended up snapping out of it eventually, but to have to wait somewhere between 15-30 minutes is not good.