![]() You could try to clean the primary corona wire of the drum unit, and if there is still no improvement of the print quality, then the only available action is a drum unit replacement. There are no warning or error messages displayed on the LCD, but the print quality is low – The installed drum unit has been exhausted. ![]() ![]() Please note that the corona wire cleaning procedure is included in the drum unit replacement instructions, which you could find further below.ģ. ![]() If the error message still appears, even after a corona wire cleaning has been performed, you must replace the currently installed drum unit. The following error message ''Drum Error'' appears on the control panel – This error message is indicating that your printer is in a non-operational mode caused by a dirty corona wire or a faulty drum unit. Otherwise, the remaining printing resource of the drum unit will be completely consumed, which will inevitably lead to a variety of print quality problems and an excessive toner consumption.Ģ. The following warning message ''Drum End Soon'' appears on the MFC-7440N's LCD during each printing task/operation – The installed drum unit has reached the end of its useful life, and it should be replaced soon. You should replace the drum unit installed in your Brother MFC-7440N Multifunction Printer, if any of the described below situations/problems appears.ġ.
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