90 Routine 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, open the Paper Output Tray, and extendthe Output Tray Extension.2 Load a sheet of A4 or Letter-sized plain paper in the Rear Tray or the Front Tray.3 Press the Feed Switch button to select the paper source where you have loadedpaper.4 Start Print Head Deep Cleaning.(1) Press the Menu button.(2) Press the [ or ] button to select Maintenance/settings, then press the OK button.The Maintenance/settings screen is displayed.(3) Press the [ or ] button to select Maintenance, then press the OK button.The Maintenance screen is displayed.(4) Press the { or } button to select Deepcleaning and then press the OK button.The confirmation screen is displayed.(5) Press the { or } button to select Yes and then press the OK button.Print Head Deep Cleaning starts.Do not perform any other operations until Print Head Deep Cleaning finishes. This takesabout 1 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 87.If a particular color is not printed properly, replace the ink tank of that color.See “Replacing an Ink Tank” on page 80.(2) If the print head nozzles are still not clean, turn off the machine and perform another PrintHead Deep Cleaning after 24 hours.(3) If this does not solve the problem, the Print Head may be damaged. Contact your Canonservice representative.
