Hopefully you figured it out by now. But it sounds like the printer memory had some garbage in it. If you clear everything out of the print queue on the printer itself, i.e. cancel every job, and then print a test page, it should work after that.
There is not much to say except the printer will not print, whether by wifi or cable. It just says "looking for printer". Or it just spits out paper with lines of gibberish on it at the top or bottom, and is impossible to stop. The scanner and copier work fine.
I would appeciate any help. I have installed all current downloads.