Has your issue been resolved?
I have the same problem.
Dump a pdf into it via CWIS, does it print?
I have a Xerox Workcentre 7535 and it is not printing. Once I have sent jobs, they get stuck in the queue on the printer and cannot be deleted. If they are to be deleted I can only delete a job at a time and after each item is deleted then I need to restart the printer and repeat the process for all the items in the list. I am able to copy and but I can't print rom my computer or using direct USB.