ERROR: Uesd ink tank is full Waste Error Reset 1: Remove the Cartridge 2: Unplug the AC Power Cord 3: Open Front access panel 3: Hold down the RESUME/RESET button and plug in the AC power cord 4: Release RESUME/RESET after plugging in the AC Power cord. 5: Press the RESUME/RESET once within 5 seconds and release the RESUME/RESET . 6: Press and HOLD RESUME/RESET for two seconds or more and release it. 7: Press and HOLD RESUME/RESET for two seconds or more and release it. 8: Unplug AC Power Cord to set data If it does not work. Try some more times. Thanks every one above.