Brother
Brother Printer Says Replace Toner After a New Cartridge
Why a Brother printer may still say Replace Toner after a new TN730 or TN760 cartridge and what to check first.
The short answer
A new cartridge should not send you straight back to the shop. First confirm that the message really says Replace Toner, that the cartridge was new, and that its number matches the printer. The illustrated procedure here covers the US HL-L2390DW.
For your printer
HL-L2390DW · US · OK and arrow buttons. Confirm whether you changed toner or the drum. If the panel or market differs, use that model’s manual.
Check or replace the toner cartridge
Applies to: HL-L2390DW, DCP-L2550DW, MFC-L2710DW, HL-L2395DW, MFC-L2750DW · US
- Confirm a toner message, not a drum message. If toner is already new, verify packaging, SKU and seating before buying again.
- If recently printing, let hot internal areas cool before touching anything. Touch only the designated consumable handles and lever.
- Keep toner level over disposable paper; do not touch the photosensitive drum surface, use sprays, or open electrical housings.
- With the printer on and idle, open the front cover. Wait for hot parts to cool, then remove the toner-and-drum assembly.
- Lower the green lock lever to release the toner cartridge. Keep the drum.
- For a new cartridge, unpack it and remove the protective cover. Fit the correct toner into the drum until it locks.
- Slide the green corona-wire tab gently from side to side several times. Align its arrow with the home-position arrow afterward.
- Reinstall the assembly, close the cover and leave the printer on until it returns to Ready.
Check the result: Print a test page when Ready appears. A drum-counter reset is not a toner-recognition fix.
If it did not work: If a correctly fitted new cartridge is still not recognized, contact Brother or the cartridge supplier with the exact model and part label.
Brother Online User’s Guide: Replace the Toner Cartridge ↗ · Source checked 2026-09-18; documentation comparison, not a hands-on test.
Before you start
- Record the exact display message before removing anything.
- Check whether the part changed was toner, the drum, or both.
Check what was actually replaced
Toner fits inside the larger drum carrier. If only the drum was changed, the printer still has the old toner cartridge. If toner was changed, compare its number with the model’s supplies list and follow the installation checklist above.
If a correctly installed new cartridge still produces Replace Toner, keep the packaging and contact Brother or the seller. Report that it is a new cartridge and which installation checks you completed. Avoid hidden-menu resets and repeat purchases while the cause remains unclear.
Worth avoiding
- Do not buy a drum for a toner recognition message unless print defects separately point to drum wear.
- Do not download chip-bypass tools.
Sources and manuals
Read the original instructions and check the details for your printer.
- 1Brother Replace Toner message support
Brother support guidance for Replace Toner, Toner Low, or Toner Ended messages after installing a toner cartridge.
- 2Brother DR730 drum unit product page
Official Brother product page for the DR730 drum unit and compatible printer family.
Something doesn’t match your printer? Tell us which page and model. These guides are based on published documentation; they are not reports of hands-on repair tests.
A useful next read
TN730 vs TN760: Which Brother Toner Should You Buy?
A plain-English comparison of Brother TN730 standard-yield and TN760 high-yield toner.
DR730 vs TN760: Brother Drum vs Toner Explained
Understand why DR730 and TN760 are not interchangeable and which problem each one solves.