Brother associates Drum ! with a corona wire that needs cleaning or a drum/toner assembly installation problem.
What Drum ! means
Brother associates Drum ! with a corona wire that needs cleaning or a drum/toner assembly installation problem.
What you may notice
- The display shows Drum !
- The print job stops
- The status light may change
- The message returns after the cover is closed
Most likely causes
- 01The corona wire is dirty
- 02The cleaning tab is not in its home position
- 03The drum is not seated
- 04The toner is not locked into the drum
- 05The drum unit is worn
Safe checks, in order
Start with the simplest non-invasive check. Stop as soon as the error clears; repeated resets can hide a condition without correcting it.
Cool and open
Wait for the printer to stop and open the front cover.
Remove the assembly
Handle the drum-and-toner unit by its frame.
Clean the corona wire
Slide the designated tab several times and return it to the marked home position.
Reseat the assembly
Install it fully and close the cover.
Know where to stop
Avoid touching the drum surface, toner contacts, or hot fuser area. Follow the exact model diagram.
When to call a technician or support
Contact Brother if the message returns after the approved steps, the printer makes abnormal noise, or a cover, sensor, drum, or fuser component is damaged.
When you call, have the exact product or vehicle model, model year where relevant, the complete code or symbol, and when it appeared.
Where this information came from
We use the manufacturer's current published guidance as the starting point, then organize it into a safer, beginner-friendly sequence.
Brother manual — error and maintenance messages Source last checked August 16, 2026. Manufacturer instructions and model manuals take priority over this independent summary.