57Routine MaintenancePrint Head Deep CleaningIf print quality does not improve by standard Print Head Cleaning, try Print Head Deep Cleaning,which is a more powerful process. Note that cleaning the Print Head causes used ink to be absorbedin the ink absorber. Print Head Deep Cleaning consumes more ink than standard Print HeadCleaning, so perform this procedure only when necessary.1 Make sure that the machine is turned on, then load a sheet of A4 or Letter-sizedplain paper in the Rear Tray or Cassette.2 Open the Paper Output Tray, and then open the Output Tray Extension.(1) Put your finger in the rounded indent of the Paper Output Tray and open it gently.(2) Open the Output Tray Extension.3 Press the Paper Feed Switch to select the paper source where you have loadedpaper.4 Start Print Head Deep Cleaning.(1) Press the HOME button.The HOME screen is displayed.(2) Select Settings, then press the OK button.The Settings screen is displayed.(3) Select Maintenance, then press the OK button.The Maintenance screen is displayed.(4) Select Deep cleaning, then press the OKbutton.The confirmation screen is displayed.(5) Select Yes, then press the OK button.Print Head Deep Cleaning starts.Do not perform any other operations until PrintHead Deep Cleaning finishes. This takes about1 minute 30 seconds.5 Check the condition of the Print Head.(1) Print the nozzle check pattern to check the print head condition.See “Printing the Nozzle Check Pattern” on page 53.If a particular color is not printed properly, replace the ink tank of that color.See “Replacing an Ink Tank” on page 46.(2) If the problem is not resolved, turn off the machine and perform another Print Head DeepCleaning after 24 hours.(3) If this does not solve the problem, the Print Head may be damaged. Contact your Canonservice representative.NoteMake sure that the Inner Cover is closed.
