f your Brother printer shows the message “Drum! Slide the green tab on Drum Unit”, don’t panic!
This usually happens when the green tab on the drum unit wasn’t returned to its home position after cleaning.
Simply remove the drum and toner assembly, slide the green tab all the way back to the left side, and reinstall it.
The error will disappear, and your print quality will be perfect again — no more long black lines on the page.
This video will guide you step by step to fix the issue easily at home.
Watch carefully and follow the instructions to keep your Brother printer working flawlessly!
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