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Other problemsOther problemsThe Ink Tank Cover has become detached from the printer ....................................................................... 549The printer does not go on ......................................................................................................................................... 549If the Printer Makes a Strange Sound .................................................................................................................... 549Messages advising to check the maintenance cartridge are not cleared .............................................. 549The printer consumes a lot of ink ............................................................................................................................ 550Ink Level Detection ......................................................................................................................................................... 550The Ink Tank Cover has become detached from the printerThe Ink Tank Cover has become detached from the printerCause Corrective ActionThe Ink Tank Cover became detached from the printer because too muchforce was applied to the Ink Tank Cover.Attach the Ink Tank Cover to the printer.(See "Attach the Ink Tank Cover to the printer.") ➔ P.498The printer does not go onThe printer does not go onCause Corrective ActionThe printer is unplugged. Plug the power cord into the outlet, and then turn on the printer.The specified voltage is not supplied. Check the voltage of the outlet and breaker.(See "Specifications.") ➔ P.574If the Printer Makes a Strange SoundIf the Printer Makes a Strange SoundCause Corrective ActionThe printermakes a soundduring opera-tion.The following sounds do not indicate a problem with the printer.• There is a sound of suction from the PlatenTo prevent paper from rising, paper is held against the Platen by suction from Vacuum holes under it.• There is a sound when a different size of paper is used and when the Carriage goes from side to sideWhen paper of a different size is used, a valve is automatically activated to switch the area for paper suction,which may make a sound. This mechanism prevents suction from Vacuum holes where there is no paper.In addition, ink is ejected in sync with the movement of the Carriage back and forth to ensure optimal ink flow.At this time, the valve automatically switches the area for paper suction, which may make a sound.• Roll paper makes a fluttering sound during printingThere may be a fluttering sound when large paper is advanced.• If you suddenly hear the tone for cleaning operationsAt regular intervals, for printer maintenance, cleaning operations will begin automatically, even if the printer isin Sleep mode.• If you suddenly hear the tone for ink agitationAt regular intervals, to ensure optimal printing quality, the ink is agitated automatically, even if the printer is inSleep mode.The ink is also agitated automatically under the following conditions. Note that other operations are not possi-ble while "Agitating..." is displayed on the control panel.• After the printer is turned onIn other cases, contact your Canon dealer.Messages advising to check the maintenance cartridge are not clearedMessages advising to check the maintenance cartridge are not clearedCause Corrective ActionThe printer has not detected the new Mainte-nance Cartridge that was used to replace the oldone.Remove the new Maintenance Cartridge you have just installed and insert itagain firmly.(See "Replacing the Maintenance Cartridge.") ➔ P.508iPF780 The Ink Tank Cover has become detached from the printerUser's GuideTroubleshooting Other problems549