Perform cleaning as follows.1 On the Tab Selection screen of the Control Panel, press ◀ or ▶ to se-lect the Settings/Adj. tab ( ).Note• If the Tab Selection screen is not displayed, press the Menu button.2 Press the OK button.The Set./Adj. Menu is displayed.3 Press ▲ or ▼ to select Maintenance, and then press the OK button.4 Press ▲ or ▼ to select Head Cleaning, and then press the OK button.5 Press ▲ or ▼ to select Head Cleaning A or Head Cleaning B, and then press the OK button.Head cleaning is now executed.6 Print a test pattern to check the nozzles, and determine whether cleaning has cleared the nozzles. (See"Checking for Nozzle Clogging.") →P.920Replacing the PrintheadReplacing the PrintheadWhen to replace the PrintheadThis printer is equipped with two printheads.Replace one or both printheads in the following situations.• If the printing quality does not improve even after one or two cycles of Head Cleaning B from the printer menuReplace any printheads with poor printing performance.• If the Display Screen indicates "Open top cover and replace the left printhead."Replace the Printhead on the left side.• If the Display Screen indicates "Open top cover and replace the right printhead."Replace the Printhead on the right side.• If the Display Screen indicates "Open top cover and replace the printhead."Replace both printheads.• If your Canon dealer has advised Printhead replacementReplace the Printhead as directed.Compatible printheadsFor information on compatible printheads, see "Printhead." →P.920Precautions when handling the PrintheadTake the following precautions when handling the Printhead.Replacing the Printhead iPF8400User's GuideMaintenance and Consumables Printheads922
