I've been using the Epson 4900 for over a year now with no problems. Yesterday I had Verizon change my DSL line to Fios, which was successful in terms of getting on line, email, etc.
When I turned on the printer to try a nozzle check, the computer could not communicate with the printer.
This is a little-known incompatibility between Fios and Epson. The Epson printer con only communicate using copper media, and fiber-optics anywhere in the signal chain results in bit-rot that the Epson printers can't deal with.
Oh, sorry. Never mind, I thought it was Monday already.