The L6490 is part of a specific series. Using an adjustment program meant for a different series (like the L6170 or L6190) can corrupt the firmware, potentially "bricking" the printer (rendering it unusable). Mary On A Cross Flac Upd Info
The Epson L6490 is a robust EcoTank printer designed for high-volume office printing. Like all inkjet printers, it contains a waste ink pad that absorbs ink used during cleaning cycles. Eventually, this pad reaches capacity, triggering a "Service Required" error. This is where the "Adjustment Program" becomes a topic of interest for users attempting DIY repairs. Ssshhh Phir Koi Hai All Episodes List →
This article provides an informative overview of what the adjustment program is, why the "verified" status matters, and the critical precautions you should take. An Adjustment Program is a proprietary service utility used by Epson technicians to diagnose and maintain printers. For the L6490, this software allows access to firmware-level settings that standard user interfaces do not show.
Resetting the counter digitally does not physically clean the waste ink pads. If the counter says the pads are full, they likely are near capacity. Resetting the counter without replacing or cleaning the pads will eventually lead to ink overflowing inside the printer, damaging the circuit board and mechanism.