Are you sure you have the right/latest drivers? Have you tried printing with it hard-wired?
I've just setup my printer on WIFI and when printing the test page, it shows almost blank, just a piece of a graphic on the right hand side and on the left, it says STACK 48.0. I was able to print a JPG file but when I tried to print a plain text file (notepad) I got stack 0.0, 0.0, 0.044434.00.00.