The EPSON Adjustment Program (often called "AdjProg" or "Resetter") is a Windows-based proprietary service tool leaked from EPSON authorized service centers. It communicates directly with the printer’s (Electrically Erasable Programmable Read-Only Memory) via USB using low-level ESC/P-R (EPSON Standard Code for Printers – Revised) commands.

Before you throw your printer out the window or pay a repair shop $80, you need to understand one critical tool: .