The remains the most accessible, cost-effective solution ($0-$10).
The Epson L405 Adjustment Program (also known as a "Resetter") is a critical maintenance utility used to resolve internal software locks, most notably the "Service Required" error that occurs when the waste ink pad counter reaches its limit. This program allows users to reset these counters, effectively extending the life of the printer without requiring immediate physical service from a technician.
Epson’s official firmware includes a safety feature that prevents a standard user from resetting the waste ink counter. The adjustment program exploits a service-mode command sequence. When launched, it sends a specific hex code to the printer’s controller, temporarily granting access to service-level functions.
: The most common use; clears the "Service Required" error.