The Necessity of the Adjustment Program: Resetting the Epson L405

Step 1: Put the Printer into Service Mode (Key Step!)

If you simply run the program normally, it will fail. You must force the printer into Service Mode:

To use the adjustment program successfully, ensure your printer is connected to your Windows PC via a USB cable, as Wi-Fi connections generally do not support this low-level communication. How to Reset Epson L3250 Using Resetter Adjustment Program

Inkjet printers clean their print heads by spraying ink through the nozzles. This waste ink has to go somewhere. It is channeled through tubes into a porous pad located at the bottom of the printer, known as the Waste Ink Pad.

The Adjustment Program is designed to reset this electronic counter back to zero, tricking the printer into thinking the pads are brand new.