Thank you, John - I had missed that post in my search here. It sounds like the same combination of lights on the printer, but a different problem. When I spoke with Epson, the rep asked if a dialog box came up on my computer with an error code, which it did not. As soon as he heard that, he said the whole unit would be replaced. (As a side note, I got the exact same behavior from my printer with refillable IJM carts, OEM carts and no carts at all in the printer, so I think whatever is wrong, it is pretty early in the start-up self-check routine, before the printer even looked to see if carts were installed. Makes me wonder if it was a core system that failed…)
Anyway, I just sent the printer off today. With a little luck I should have the replacement on hand in a week and a half or so.