Could a full or incorrectly installed maintenance box cause blinking error lights on an Epson L3250? How do I check it?

Yes, a full or incorrectly installed maintenance box can definitely cause blinking error lights on an Epson L3250. The maintenance box (or waste ink pad) collects excess ink generated during print head cleaning cycles. When it becomes full, the printer will stop operating and typically indicate an error with blinking lights, often accompanied by a message on your computer. To check it: 1. Locate the maintenance box on your printer (refer to your manual for its exact location, usually at the rear or side). 2. Turn off the printer. 3. Open the cover to access the maintenance box. 4. Remove the old maintenance box and visually inspect it. 5. If it's full, replace it with a new, genuine Epson maintenance box. 6. Ensure the new box is installed correctly and the cover is securely closed. The printer's internal counter for the maintenance box also needs to be reset, which often happens automatically upon new box installation, but sometimes requires a utility.