Why do you have to replace drum in my Brother printer?
The Brother machine will display a ‘Replace Drum’ or ‘Drum Stop’ message when the machine has printed approximately 15,000 pages. The drums should be replaced as a set in order to maintain print quality. Unlike the toner cartridges, the drum change is not automatically detected by the machine when they are replaced.
How do you replace the drum on a Brother MFC 7860dw?
How to replace the drum unit:Turn on the printer.Open the front cover and let the printer sit for ten minutes so it can cool down.Remove the drum unit and toner cartridge from the printer.Separate the toner cartridge from the drum unit by pressing down on the green lever.Open up your new drum unit.