A: You have a different error. Try "Ink Charge" or check that you selected the correct model (ET-2750, not ET-2750U). Also, ensure the USB cable is not loose.
You will see two numbers:
Every time your printer cleans its heads, it dumps excess ink into internal sponges (ink pads). The printer uses an internal counter to track this; once the counter reaches a specific limit, the printer locks itself to prevent ink overflow and potential damage. How to Use the Adjustment Program for ET-2750 epson adjustment program et2750 hot