This video explains how to send a test fax to the HP fax service. This service will help diagnose and resolve issues with sending and receiving faxes. The printer shown is the HP Officejet Pro 8500 Premier All-in-One Printer - A909n. The same steps apply to other models in the Officejet Pro 8500 series (A909a, A909b, A909d, and A909g). I am an HP employee. I do not represent HP on this website.