Cannot recognize print head x. (x is L, R, or not displayed)Cannot recognize print head x. (x is L, R, or not displayed)Cause Corrective ActionNo Printhead is installed. Follow these steps to install the Printhead.1. Open the Top Cover.2. Install the Printhead L if Printhead L is displayed and the Printhead R if Printhead R is displayed. If neitherleft or right is indicated, install both Printhead L and Printhead R.(See "Replacing the Printhead.") →P.38The Printhead cannot berecognized because it isnot installed correctly.Follow these steps to reinstall the Printhead.1. Open the Top Cover.2. Reinstall the Printhead L if Printhead L is displayed and the Printhead R if Printhead R is displayed. If nei-ther left nor right is indicated, re-install both Printhead L and Printhead R.(See "Replacing the Printhead.") →P.38Execute printhead cleaning.Execute printhead cleaning.Cause Corrective ActionThe Printhead noz-zles are clogged.Follow these steps to clean the Printhead.1. Stop printing by pressing ▲ or ▼ to select Stop Printing.2. Clean the Printhead.(See "Cleaning the Printhead.") →P.53If the message is still displayed when printing, replace the Printhead.(See "Replacing the Printhead.") →P.38Press ▲ or ▼ to select Print, and then press the OK button to resume printing. However, note that this error mayaffect the printing quality.If OK is shown on the Display Screen, clean the Printhead.1. Press the OK button on the Control Panel to stop printing.2. Clean the Printhead.(See "Cleaning the Printhead.") →P.53If the message is still displayed when printing, replace the Printhead.(See "Replacing the Printhead.") →P.38Cannot recognize print head x. (x is L, R, or not displayed) iPF6450Basic GuideError Message Messages regarding printheads150