code appears on the LED, and then press the Black or Color button.MaintenanceCode Operation SeePrints the nozzle check pattern. Printing the Nozzle Check PatternCleans the Print Head. Cleaning the Print HeadCleans the Print Head deeply. Cleaning the Print Head DeeplyPrints the print head alignmentsheet.Aligning the Print HeadScans the print head alignmentsheet to align the Print Headautomatically.Aligning the Print HeadPrints the current head positionadjustment values.Aligning the Print HeadCleans the Paper Feed Roller. Cleaning the Paper Feed RollerCleans the inside of the machine. Cleaning the Inside of the Machine (Bottom PlateCleaning)Switches the size of paper loadedin the Rear Tray between A4 and8.5" x 11" (Letter).(This setting is used for makingcopies.)Switching the Page Size between A4 and 8.5" x11" (Letter)Sets the machine to prevent paperabrasion.Refer to "Paper Is Smudged/Printed Surface IsScratched" in "Troubleshooting" of the on-screen manual: Advanced Guide .Error CodesWhen an error occurs, E and number appear alternately on the LED to indicate the error code.e.g. "E, 1, 6"(flashing in order)NoteFor details on the error codes, refer to " Troubleshooting" in the on-screen manual: AdvancedGuide.If an error code with P appears, an error that requires contacting the service center may haveoccurred.For details, refer to "Troubleshooting" in the on-screen manual: Advanced Guide .Page topPage 10 of 707 pagesLED Display and Basic Operations