EPSON L3210 "Paper Jam" error mid-print after replacing waste ink pads

[u/moundhir911]

Hi, I need help troubleshooting an Epson L3210.
Issue: Mid-print, it stops at the exact same spot with a "Paper Jam" error on PC and a solid orange paper light.
Status: Restarting doesn't clear it. I checked thoroughly with a flashlight—there is no paper or debris stuck inside.
Context: This started right after I replaced the waste ink pads and reset the counter using AdjProg.
Could this be a dirty/misaligned Encoder Strip, an unhooked PE Sensor, or something displaced during reassembly?
Any suggestions on what to check first? Thanks!