The Epson EcoTank L6190 is a workhorse for small offices and home businesses. It combines high-volume ink tanks, fax, and an ADF. However, like all modern Epson inkjets, it has a hidden flaw: a Waste Ink Pad Counter . Once this counter reaches its limit, the printer locks down with a "Service Required" error (often error code 0x9A or similar). You cannot bypass this through the driver. To fix it, you need the new version of the Epson L6190 Resetter (Adjustment Program) .