Re-writes the printer's mainboard serial identity after a motherboard replacement. Step-by-Step Guide to Using the Reset Utility

Open the extracted folder, right-click on AdjProg.exe , and select . Click the Select button at the top of the interface.

Most older Epson adjustment programs are designed for 32-bit legacy systems. If the software fails to open or throws a communication error on Windows 10 or Windows 11, try right-clicking the application, selecting Properties , navigating to the Compatibility tab, and running it in compatibility mode for Windows XP (Service Pack 3) or Windows 7 .

Instead of risking a random download, consider these safer paths:

Right-click on the main executable file (usually named AdjProg.exe ) and select .

The printer stops responding, and the control panel lights flash in an alternating pattern.

Epson PLQ 20 Passbook Printer Configuration. *  Turn on the printer holding F1 and F2 buttons. ... * Passbook Printer Settings. .

Run the tool inside a virtual machine or a dedicated, isolated service PC if you are unsure of the file's integrity.

: Calibrates the bidirectional printing to fix vertical line misalignments.

Clears the protection counter back to 0%.

If you reset the waste counters multiple times without checking the physical components, ink overflow or mechanical friction can permanently damage the mainboard or the print head pins.

Delete all pending print jobs from the Windows print spooler.

In this post, we've provided you with a free adjustment program for your Epson PLQ-20 printer. By following the steps outlined above, you should be able to reset your printer and get it working again. If you encounter any issues or have questions, feel free to ask in the comments below.

: Allows users to back up and restore EEPROM data when moving settings from an old mainboard to a new one.

Go to your PC's Devices and Printers control panel. Cancel all pending print jobs.

Whitelist the program in Windows Defender. Use a rear USB port directly on the PC motherboard.

If a free tool fails, consider using verified premium technician remote reset services, which offer clean, guaranteed software tools. Physical Maintenance After a Reset

The Epson PLQ-20 is a high-precision printer often used in banking. The Adjustment Program is typically used for: