Machine does not recognize the service T DISC; cannot start cleaning or descaling program.

Safety first: Unplug the machine before cleaning the scanner.

• Clean scanner window: Wipe the barcode reader window gently with a soft, damp cloth.
• Inspect service disc: Check that the yellow/orange service T DISC is not scratched or warped and that the barcode is intact.
• Try another disc: If available, test with a different service disc.
• Insert correctly: Ensure the disc is placed with the barcode facing down and fully seated.
• If still not recognized: The barcode reader or control board may be faulty and require service.