I'm not sure how you're connected but I've included two article below for you to look at. If you are still having issues after trying these steps, I suggest that you call into our support department for assistance @ 1-800-835-6100.
Unable to Print over Ethernet
Unable to Print over WIFI
I have a WorkCenter 6515,no mather what I do, it refuses to print.
I can't connect to it or find it in my printers search.
Would appriciate any help.