Open the printer and locate the toner cartridge

The toner cartridge sits inside your Brother printer's main compartment. To reach it, open the front access panel — on most Brother models, you'll see a latch or button on the front of the machine. Press or slide it, and the panel swings open to reveal the cartridge bay.

Inside, you'll see a plastic or metal drum unit with the toner cartridge attached to it. The cartridge is usually a rectangular plastic box, often black or color-coded (cyan, magenta, yellow, or black). Don't touch the shiny metal drum or the green electrical contacts on the cartridge itself — toner dust can damage the printer if it gets on these parts.

Key Takeaways

  • Brother toner cartridges pull straight out of the drum unit with a firm, steady tug — they're designed to release easily once you've lifted the green tab or lever.
  • Before installing a new cartridge, shake it side to side for 10 to 15 seconds to distribute the toner powder evenly inside.
  • The green protective tape on the new cartridge must be removed completely before you insert it, or the printer will not dispense toner.
  • If your printer shows a low-toner warning but still prints, you can usually continue working for several hundred more pages before replacing the cartridge.
  • Brother cartridges cost between $40 and $80 depending on the model and whether you buy genuine Brother cartridges or third-party alternatives.

Remove the old cartridge by lifting the green tab

Look for a green lever or tab on the cartridge itself — this is the release mechanism. Lift it upward or pull it toward you, depending on your printer model. You should feel the cartridge loosen slightly. Once the tab is fully engaged, grip the cartridge firmly on both sides and pull it straight toward you with steady pressure. It will slide out of the drum unit.

Set the old cartridge on a clean, flat surface. If toner spills, wipe it up with a damp cloth — dry cloth alone will spread the powder. Do not pour old toner down the drain. Most office supply stores that sell Brother cartridges will take used ones back for recycling, often at no charge.

Prepare the new cartridge for installation

Remove the new cartridge from its box and locate the green protective tape that runs along the side or bottom. This tape prevents toner from leaking during shipping. Peel it off completely — if you leave any tape in place, the printer will not dispense toner and you'll get blank pages. Check both sides of the cartridge to make sure all tape is gone.

Hold the cartridge horizontally and shake it side to side for 10 to 15 seconds. This distributes the toner powder evenly inside, which helps prevent streaking or uneven printing in your first few pages. After shaking, set the cartridge down gently.

Insert the new cartridge into the drum unit

Align the cartridge with the slot in the drum unit. The cartridge has a shaped edge that only fits one way, so you cannot insert it backward. Slide the cartridge straight into the drum unit until you hear or feel a click — this means the electrical contacts have seated properly and the cartridge is locked in place.

Close the front access panel of the printer. You should hear it latch. Your printer may display a message on the screen asking you to confirm that you've installed a new cartridge — select "Yes" or "OK" if prompted. Some Brother models automatically detect the new cartridge and reset the toner counter on their own.

Reset the toner counter if your printer requires it

Older Brother printer models ask you to manually reset the toner counter after installing a new cartridge. Check your printer's display panel or menu. Look for an option labeled "Toner Reset," "Cartridge Reset," or "Supply Reset." The exact path varies by model, but it's usually found under Settings or Maintenance.

If you're unsure whether your model needs a manual reset, print a test page. If the printer still shows "Low Toner" or "Replace Toner" when ready after installation, go back into the menu and look for the reset option. Your printer's manual or the Brother support website for your specific model number will confirm whether a reset is necessary.

Genuine Brother cartridges versus third-party alternatives

Brother sells genuine cartridges under the Brother brand name. These cost more — typically $50 to $80 per cartridge — but come with a full warranty and are may provide to work with your printer. Third-party cartridges made by companies like LCP or Toner Depot cost $25 to $50 and work in most Brother printers, though some users report occasional quality issues like slight color shifts or toner residue inside the machine.

If you print frequently and need consistent color or image quality, genuine cartridges are worth the extra cost. If you print occasionally and want to save money, third-party cartridges are a reasonable option — just buy from a seller with clear return policies in case a cartridge doesn't work properly. Avoid cartridges listed as "compatible" without a brand name; these are often refilled or remanufactured cartridges of unknown origin.

Troubleshooting common installation problems

If your printer shows "Cartridge Error" or "Cartridge Not Detected" after installation, the electrical contacts may not be making proper contact. Remove the cartridge, wipe the gold or silver electrical contacts on both the cartridge and the drum unit with a dry, lint-free cloth, and reinsert it. Make sure the cartridge clicks fully into place.

If you see toner streaks, lines, or blank spots on your pages after replacing the cartridge, the protective tape may not have been fully removed, or the cartridge may not have been shaken before installation. Remove the cartridge again, check for any remaining tape, shake it thoroughly, and reinstall it. If the problem persists, the drum unit itself may be worn and may need replacement — this is a separate part from the toner cartridge.

Frequently Asked Questions

How do I know when to replace the toner cartridge?

Your printer will display a "Low Toner" or "Replace Toner" message on its screen or control panel. You can usually continue printing for several hundred more pages after this warning appears. If printing becomes very faint or stops entirely, the cartridge is empty and must be replaced.

Can I use a cartridge from a different Brother printer model?

No. Brother cartridges are model-specific. Check your printer's model number on the back or bottom of the machine, then match it to the cartridge box before buying. Using the wrong cartridge can damage the printer or cause it not to recognize the cartridge at all.

What should I do if the cartridge won't slide into the drum unit?

Stop pushing and check the alignment. The cartridge has a shaped edge that only fits one way. Rotate it slightly and try again. If it still won't go in, make sure you've removed all protective tape and that the green release lever on the old cartridge was fully disengaged before you removed it.

Is it safe to refill a Brother cartridge instead of buying a new one?

Refilling is possible but risky. Refill kits cost $15 to $25, but improper refilling can damage the cartridge or leave toner residue inside your printer. If you choose to refill, follow the kit instructions exactly and work over a surface that can be easily cleaned. Many people find that buying a third-party cartridge is safer and only slightly more expensive.

Why does my printer still say "Low Toner" after I installed a new cartridge?

The toner counter may not have reset. Check your printer's menu for a "Toner Reset" or "Supply Reset" option and select it. If your printer doesn't have this option or the message persists after a reset, the cartridge may be defective — contact the seller for a replacement.