Note• Depending on the color, you can also use ink tanks of different capacities.Precautions when handling ink tanksTake the following precautions when handling ink tanks.Caution• For safety, keep ink tanks out of the reach of children.• If ink is accidentally ingested, contact a physician immediately.Important• There may be ink around the ink supply section of ink tanks you removed. Handle ink tanks carefully during replace-ment. The ink may stain clothing.• Do not install used ink tanks in another model of printer.This will prevent correct ink level detection, which may damage the printer or cause other problems.• We recommend using up an Ink Tank in the course of printing within six months after breaking the seal. Printing qualitymay be affected if you use older ink tanks.• Do not leave the printer without ink tanks installed for extended periods (a month or more). Residual ink may becomeclogged inside the printer and affect printing quality.Confirm the messageWhen the ink level becomes low, a message is displayed on the Display Screen.According to the message, replace the ink tank or prepare a new ink tank. (See "When to Replace Ink Tanks.")→User's GuideIf a message requests you to replace an Ink Tank, press the OK button. In this case, you can skip the step Accessthe menu for ink tank replacement. Follow the instructions in Remove the ink tanks.Important• Do not remove an Ink Tank during initialization immediately after turning on the printer, or during printhead cleaning.Ink may leak out.Note• Ink Tank replacement is possible even during printing, when print jobs are being canceled, or when paper is being ad-vanced.iPF6400 Replacing Ink TanksBasic GuideConsumables and Maintenance Ink Tanks27