Epson PLQ-20 Adjustment Program (also known as a "Resetter") is a specialized service utility primarily used by technicians to maintain and calibrate Epson PLQ-20 series passbook printers. While often sought out to clear "service required" errors or reset counters, it is technically a proprietary tool intended for authorized personnel. Core Functions and Capabilities

Without this utility, your locked Epson PLQ-20 is essentially a brick.

  1. Close the Adjustment Program.
  2. Open Notepad. Type a test sentence.
  3. Print to the Epson PLQ-20.
  4. The printer should now operate normally, with no flashing lights.

Step 3: Run the Adjustment Program