Epson Stylus cx8400
insert new Epson replacement cartridge and wait until the printer refused to recognise it.
The solution was to push down on the cartridge an additional 1/4 inch so that until it clicked in place.
Try pressing down on the level replacement cartridge 1/4" until it clicks - this may even work for non-Epson cartridges as well.
good luck
Epson replacement cartridge on Epson Stylus cx8400
