• The Ink Tank Cover is openClose the Ink Tank Cover.• The Printhead is not installedPlease see "Replacing the Printhead." ➔P.587• Ink Tank is not installedPlease see "Replacing Ink Tanks." ➔P.574• "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. (See "Loading and Printing on Rolls.") ➔P.18 (See "Loading and Printing onSheets.") ➔P.21Turning the printer offImportant• Never disconnect the printer's power supply or unplug it during a print job. This may damage the printer.1 Make sure no print jobs are in progress.If the Message Lamp is flashing, check the message onthe Display Screen and take action as necessary. (See "Er-ror Messages.") ➔P.652If the Data Lamp is flashing, the printer is receiving a printjob. Turn off the printer only after printing is finished.2 Hold down the Power button for more than a second.After "Shut Down.. Please Wait.." is shown on the DisplayScreen, the printer shuts off.Loading and Printing on RollsLoading and Printing on RollsThese are the basic steps for loading and printing on rolls.Follow these steps to load and print on rolls.Loading and Printing on Rolls iPF850User's GuideBasic Printing Workflow Printing procedure18
