Colors Are UnclearCheck1 Is nozzle check pattern printed properly?Print the nozzle check pattern to determine whether the ink ejects properly from the print head nozzles.For details on printing the nozzle check pattern, print head cleaning, and print head deep cleaning, see If PrintingIs Faint or Uneven.• If nozzle check pattern is not printed correctly:After performing the print head cleaning, print the nozzle check pattern and examine the pattern.• If problem is not resolved after performing print head cleaning twice:Perform print head deep cleaning.• If problem is not resolved after performing print head deep cleaning:Perform system cleaning.◦ From computer:■ For Windows:Cleaning the Print Heads■ For Mac OS:Cleaning the Print Heads◦ From operation panel:To perform system cleaning, press and hold the Stop button until the Alarm lamp flashes 5 times, andthen release the button.Important• Before performing system cleaning, check the remaining ink level of all colors. If the remaining inklevel is below the single dot (a), refill the ink tank of corresponding color. Performing systemcleaning when the remaining ink level is not enough may damage the machine.If the problem is not resolved yet, the print head may be damaged. Contact your nearest Canon servicecenter to request a repair.Important• Do not tilt the machine when moving it since the ink may leak out.• When transporting the machine for repairing it, see Repairing Your Machine.503
