I bought an Epson 4750 printer a few months ago and have had nothing but problems with it. Ever since day one it has been incredibly slow. It’s now gives me a scanner error 100016 and displays a message asking me to contact support. I also have an Epson ET 2550 and was comparing speeds. The 2550 spit out 49 pages in the time the 4750 spit out 7.
Have been struggling with this same error on a 2&1/2 year old, lightly used WF-4740 for three days now. The printer would print even with the error code, but I could not do anything that required a menu, so no copying, scanning, changing ink cartridges, etc. A tech get on remotely and removed and reinstalled the drivers and the firmware this morning, all to no avail. Endless repetition of the same scanner error code! (Luckily my agreement with them was that if they couldn’t fix the problem, there was no charge for trying! Honest people!) So, I just ran the fix suggested here of powering down, removing both paper trays and powering back up with the trays out. Voila! Problem solved, at least for the moment. We’ll see if it sticks. As luck would have it, I had just restocked the ink supply a week ago at some expense, and the thought of chucking all that new ink with the printer would have made it even a bitterer pill to swallow. Well, all is working now, and I’m keeping fingers crossed that it holds!