One of my regular clients had a problem this week where their relatively new Epson Multifunction printer (18 months) gave an error when turned on. The error was displayed on the printer screen and referred you to the Epson User manual which, in turn, suggested contacting the nearest Epson repair centre. No matter what she tried she could not get past this point.
After trying various things myself including checking for jammed paper, removing an reinserting the trays, removing ink cartridges, cleaning the contacts and the reinserting the CD tray I turned to the internet but found little that was of help.
Finally instead of turning off the system I REMOVED the main cable from the printer completely and disconnected it from the PC.
I then reconnected the printer mains lead but left the USB cable disconnected and turned the printer on.
Success! Well partially.
The printer now got beyond the initial error and this time showed a problem with the cyan cartridge.
We replaced this cartridge which cleared the error message then reconnected the printer to the PC and all worked fine.
So, in summary this problem was caused by a faulty cartridge but if you followed the instructions many people would have sent the device to a repair centre, pretty costly if out of warranty. All that was really needed was to replace the faulty cartridge to resolve the issue.
Sharing this as it may save someone time and repair costs.