When to Replace Ink Tank and Maintain Print Head 73Routine MaintenanceWhen to Replace Ink Tank and Maintain Print HeadWhen printing becomes faint or colours are incorrect, see if the print head nozzles areclogged and clean them first. Follow the procedures below and replace an ink tank ifnecessary.➡ Printing the Nozzle Check PatternIf the print quality is poor➡ Print Head CleaningIf the problem remains➡ Print Head Deep CleaningStill the problem remains➡ Replacing an Ink TankIf print head cleaning and ink tank replacement do not resolve the problem, the print headmay be worn out. Contact a Canon service representative.Note ➤ You will be alerted if you enable a low ink warning.➡ Enabling Low Ink Warning