Hi mistertrb,
Thank you for using the Support Forum. Please take a look at the solution for Please Wait Self Test in Progress Message. If this does not help please consider contacting your support centre for further assistance.
Does anyone know how to stop the 5638 from staying in the Self Testing and upgrading on the printer. That is all that is doing on my printer. We turned it off over the weekend and when we turned it back on that is all it has been doing since Monday. Please help ASAP