What to do if Brother Printer shows 'Cartridge Error Put the Toner Cartridge back in'?
- JJonathan Chan Jr.Aug 29, 2025
If your Brother printer displays 'Cartridge Error Put the Toner Cartridge back in', it means the toner cartridge is not installed correctly. Remove the toner cartridge and drum unit assembly, take out the toner cartridge, and put it back in the drum unit again. Reinstall the toner cartridge and drum unit assembly in the machine.