Brother Cartridge Error: Toner cartridge not seated
✅ Usually fixable yourself
Brother says "Cartridge Error" appears when the toner cartridge is not installed correctly.
What to try
- Remove the toner cartridge and drum unit assembly.
- Take out the toner cartridge and put it back into the drum unit.
- Reinstall the assembly in the machine.
- If the issue continues, contact your Brother dealer or Brother Customer Service.
When it needs a technician
If reseating the cartridge does not clear the message, Brother says to contact your dealer or Brother Customer Service.
Which models show Cartridge Error
Brother documents this code for models including HL-L2350DW, HL-L2370DW, HL-L2390DW, HL-L2460DW, MFC-L2710DW, MFC-L2750DW, DCP-L2550DW, MFC-L2820DW.
First steps for any printer error
- Write down the exact code before you do anything else — similar-looking codes often mean completely different things.
- Power the printer off, unplug it for a couple of minutes, then power it back on. A surprising number of transient errors clear here.
- Open the covers and check for paper scraps, packaging material, or anything blocking the carriage.
- Check the cartridges or tanks are genuine, correctly seated, and not empty.
- Confirm the printer is plugged directly into a wall outlet, not a power strip or extension lead.
- Check your model’s own manual — codes are model-specific, and the manual is the authority for your machine.
Source: Brother Support FAQ - Cartridge Error (HL-L2350DW). Codes are model-specific, so your own model's manual is the final word. Reviewed October 2026.
Still showing Cartridge Error?
Tell our printer technician your model and what you've tried. You'll find out whether it's fixable at home or worth repairing at all.
Ask about my printer — $1Eric Paul Amora · Printer & Hardware Repair Technician
Related Brother codes
Print Unable XX — Laser printer mechanical issueDrum End Soon — Drum unit near end of lifeReplace Drum — Time to replace the drum unitDrum Error — Corona wire dirty or drum not seatedReplace Toner — Toner cartridge at end of lifeToner Low — Toner cartridge running lowToner Ended — Out of tonerNo Toner — Toner cartridge not detectedWrong Toner — Toner cartridge not compatibleCannot Detect — Cartridge not detectedJam Inside — Paper jammed inside the machineJam Rear — Paper jammed in the back