48 Routine Maintenance Replacing Ink TanksWhen ink tanks run out of ink, replace them using the following steps.1 Open the Paper Output Tray.(1) Put your finger in the rounded indent of the Paper Output Tray and open it gently.2 Make sure that the machine is turned on, andraise the Scanning Unit (Printer Cover) until itstops.The Print Head Holder moves to the center.3 Open the Inner Cover.ImportantHandling Inkz To maintain optimal printing quality, we recommend the use of specified Canon brand ink tanks.Refilling ink is not recommended.z Once you remove an ink tank, replace it immediately. Do not leave the machine with ink tanksremoved.z Replace empty tanks with new ones. Inserting partially used ink tanks may cause the nozzles toclog. Furthermore, with such tanks, the machine will not be able to inform you when to replacethe tanks properly.z Once an ink tank has been installed, do not remove it from the machine and leave it out in theopen. This will cause the ink tank to dry out, and the machine may not operate properly when itis reinstalled. To maintain optimal printing quality, use an ink tank within six months of first use.z Color ink may be consumed even when printing a black-and-white document or when black-and-white printing is specified.Color ink is also consumed in Print Head Cleaning and Print Head Deep Cleaning, which maybe necessary to maintain the machine’s performance. When an ink tank is out of ink, replace itimmediately with a new one.CautionDo not hold the LCD or the Operation Panel.ImportantIf the Scanning Unit (Printer Cover) is left open formore than 10 minutes, the Print Head Holder moves tothe right. Close and reopen the Scanning Unit (PrinterCover) to return the holder to the center.Cautionz Do not hold the Print Head Holder to stop or moveit.z Do not touch the metallic parts inside the machine.