Our hero's owner was faced with a choice: pay for an expensive professional repair or find a "Resetter". The Epson L3211 Resetter (often referred to as an "Adjustment Program") is a specialized utility designed to talk to the printer's firmware. The process felt like a digital rescue mission:
Watch this step-by-step guide to clearing the 'Service Required' error using the adjustment utility: Epson L3211 Resetter