Do you have a question about the MUTOH RJ900X and is the answer not in the manual?
Press the [Menu] key on the operation panel to access the Setup menu display.
Use [+] or [-] keys to select "*Menu* Utility>" and press [Enter] to proceed.
Use [<] or [>] keys to select "Replace Cutter" and confirm with [Enter].
Open the front cover to allow the print head to move to the replacement position.
Use a dry Polynit wiper (non-woven cloth) to wipe off ink or dust from the cleaning wiper.
Close the front cover after the cleaning process is finished.
Press the [Enter] key to return the print head to its original position and complete the cleaning.