Every printhead has a unique ID (e.g., DF47K20 ). If you replace the head, go to and type the new ID exactly as printed on the head sticker. Failing to do this results in color casts or banding.

Using the voids your warranty if the printer is still covered. Epson service software is protected under copyright laws. Unauthorized use may be considered a violation of the Digital Millennium Copyright Act (DMCA) in the US or similar laws elsewhere.

Epson L3150 Adjustment Program (often called a "resetter") is a specialized utility used to fix the "Service Required" error that occurs when the printer's internal waste ink pads are full. When this happens, the ink and paper lights typically flash alternately, and the printer stops functioning. How to Use the Adjustment Program