The Epson L3256, like all inkjet printers, uses absorbent pads to collect ink purged during cleaning cycles. The printer tracks the estimated pad saturation via a counter. When the counter reaches a factory-set limit (usually ~95% of pad life), the printer locks with an error message:
Link your printer to a Windows PC via a USB cable (wireless resets are often unstable). Epson L3256 Adjustment Program