Here is what is actually happening: The Epson M2120, like all inkjet printers, uses a spongy "waste ink pad" inside the chassis to absorb ink purged during cleaning cycles. Epson programs a counter into the firmware that tracks estimated pad saturation. At a predetermined threshold (typically around 15,000–20,000 pages), the printer hard-locks itself.
: This "zeros out" the digital counter so your printer thinks it's fresh out of the box. Perform Maintenance epson m2120 adjustment program