I have two epson printers. A WF 3720 that I would love to install a cis system into but that’s not out yet.... and an XP-310. The 310 I just “modified” to a cis system. Now, I can’t clear the paper jam error codes. I can’t even get a test page printed. Also, the printer makes a short lived, weird squeal just before error codes come up.\n\ntroubleshooting::\n\n1.) I have already cleared any paper. 2.) it is doing this even without paper inserted into the paper tray. 3.) I have already tried the resetting of pulling power cable and plugging that directly to the wall instead of an outlet strip.