Ciao, prova questa procedura spiegata da Alberto qualche tempo fa:
1. Turn off the printer power and unplug the power cord from the wall. Disconnect the computer interface cable at the back of the printer. 2. After one minute reattach the power plug to the wall, but don't reattach the computer cable. 3. Hold down the ROLL and the PAPER ADVANCE buttons simultaneously. 4. Turn the printer on. after 2 blinks, all the ink lights come on, then release the buttons being held down. 5. Press and hold the ROLL button for 10 seconds. 6. Release the ROLL button and the printer will initialize, which resets the Waste Ink Pad Counter. 7. Once initialization is complete, turn the printer power off. 8. Reconnect the interface cable. 9. Turn the printer on and print a document.