I’ve just managed to remove and clean the ink pads on my relatively new Epson ET-4700. You take a screw out of the back right corner and remove the corner panel. Then remove an identical screw inside that secures a plastic tank which slides out with a little wrestling. Five very messy pads to rinse ink out of, then dry them and replace. Wish I could figure out how to open the rest of the printer and mop up ink that’s been smudging paper. No “Counter needs resetting” message yet. Just had to “power clean” too many times and the print got very messy. Hope this fixes it.