To prevent the printer from overflowing and leaking ink onto the user’s desk, Epson engineers installed a digital counter within the printer’s firmware. This counter tracks the approximate volume of ink that has been diverted to the pads. When the counter reaches a specific threshold (often arbitrarily set by the manufacturer to be conservative), the printer enters a "protection state," flashing error lights and refusing to print. This is a safety measure, not necessarily a sign that the pads are physically overflowing, though they may be saturated.
An adjustment program is a proprietary service tool that Epson technicians use to: adjustment program epson l800 free best