You need to prepare: a sheet of A4 or Letter-sized plain paper
Make sure that the power is turned on.
Load a sheet of A4 or Letter-sized plain paper on the rear tray.
Pull out the paper output tray and open the output tray extension.
Press the Setup button.
The (Setup) icon and "1" appear on the LCD.
Press the Black button or the Color button.
The nozzle check pattern will be printed.
Do not perform any other operations until the printer completes the printing of the nozzle check pattern.