Control PanelTurning the Printer On and OffTurning the printer on1. Press the Power button to turn on the printer.The printer will now start up.After the Display Screen shows the Canon logo, Starting up... Please wait. is displayed.2. The printer goes online in preparation for printing after startup, and the Online lamp and papersource section lamp remain lit.The printer will not go online in the following situations. Take action as needed.• The Top Cover is openClose the Top Cover.• The Ink Tank Cover is openClose the Ink Tank Cover.• The Printhead is not installedPlease see “Replacing the Printhead”. (→P.579)• Ink Tank is not installedPlease see “Replacing Ink Tanks”. (→P.563)• “ERROR” is shown on the Display ScreenTurn off the printer and contact your Canon dealer.• The Online lamp and Message lamp are not lit (even once), and nothing appears on the DisplayScreenMake sure the printer is plugged in correctly. Check the connection at the plug and electrical outlet.• No paper is loadedLoad paper. (→P.89) (→P.93)Important• Starting the printer when it is connected via the USB cable to a Macintosh computer that is off maycause the computer to start up at the same time. To prevent this, disconnect the USB cable beforestarting the printer. Connecting the printer to the computer via a USB hub may solve this issue.Printer Parts 25