How to Replace a Brother Toner Cartridge: Step-by-Step for All HL and MFC Models

by William Elward · Editorial policy Last Updated: November 8, 2026

Updated November 2, 2026

Quick answer: On most Brother HL and MFC mono laser printers, open the front cover, slide out the drum unit with the toner attached, push down the green lock lever to release the old toner, click the new toner into the drum, and slide the assembly back in. It takes under two minutes and no tools. Color models use a drawer-style drum unit, but the idea is the same: pull the drawer, swap the empty color, push the drawer back.

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What You'll Need

Replacing a toner cartridge on a Brother laser printer is one of the simplest printer maintenance tasks you'll do. The whole process takes under two minutes and requires no tools. You'll need:

The replacement toner cartridge (check your model number — see below)
A clean, flat surface
Optionally: a cloth or sheet of paper to set the old cartridge on (there may be small amounts of residual toner)

Important note for Brother printers: On most Brother laser models, the toner cartridge and drum unit are separate components. The toner is the powder-filled consumable you replace frequently (roughly 1,200–3,000 pages for standard yield, 2,600–8,000 for high-yield, and up to 12,000–20,000 for Brother's super and ultra high-yield business cartridges). The drum unit lasts much longer — typically 12,000–30,000 pages — and is replaced separately. This guide covers toner cartridge replacement only; for the drum, see How to Replace and Reset the Drum on a Brother Printer.

Step 1: Find Your Brother Printer's Toner Cartridge Number

Before buying or installing a replacement, confirm the correct toner number for your model. Brother toner cartridges use a TN-XXX numbering system (e.g., TN-760, TN-660, TN-227), and drum units use DR-XXX. You can find your cartridge number:

On a sticker on the front or bottom of your printer
In the printer menu under Settings or Information
In the manual that came with the printer
By entering your model in our Find Ink by Printer tool, or searching "[your printer model] toner cartridge"

Common Brother Toner Cartridge Numbers by Model Series

Every toner and drum below is linked to Castle Ink's compatible version where we stock it. Yields are the manufacturer-rated page counts at about 5% coverage.

Brother Printer Models	Toner Cartridge	Standard Yield	High Yield	Drum Unit
HL-L2300D, HL-L2340DW, HL-L2360DW, HL-L2380DW, MFC-L2700DW, MFC-L2740DW, DCP-L2540DW	TN-630 / TN-660	1,200 pages	2,600 pages	DR-630 (about 12,000 pages)
HL-L2350DW, HL-L2370DW, HL-L2390DW, HL-L2395DW, MFC-L2710DW, MFC-L2750DW, DCP-L2550DW	TN-730 / TN-760 (XL bundle models also take TN-770, about 4,500 pages)	1,200 pages	3,000 pages	DR-730 (about 12,000 pages)
HL-L3210CW, HL-L3230CDW, HL-L3270CDW, HL-L3290CDW, MFC-L3710CW, MFC-L3750CDW, MFC-L3770CDW (color)	TN-223 / TN-227	1,400 black / 1,300 color	3,000 black / 2,300 color	DR-223CL (about 18,000 pages)
HL-L3220CDW, HL-L3280CDW, HL-L3295CDW, MFC-L3720CDW, MFC-L3780CDW (newer color)	TN-229 / TN-229XL	1,500 black / 1,200 color	3,000 black / 2,300 color	See your manual
HL-L2405W, HL-L2460DW, HL-L2480DW, MFC-L2820DW, MFC-L2900DW, DCP-L2640DW	TN-830 / TN-830XL	1,200 pages	3,000 pages	DR-830 (about 15,000 pages)
HL-L5100DN, HL-L5200DW, HL-L6200DW, MFC-L5700DW, MFC-L5800DW, MFC-L5850DW, DCP-L5500DN	TN-820 / TN-850	3,000 pages	8,000 pages	DR-820 (about 30,000 pages)
HL-L6200DW, HL-L6300DW, HL-L6400DW, MFC-L6700DW, MFC-L6800DW, MFC-L6900DW	TN-880 (super high yield) / TN-890 (ultra high yield, HL-L6400DW and MFC-L6900DW only)	12,000 pages (TN-880)	20,000 pages (TN-890)	DR-820 (about 30,000 pages)

Corrections in this update: the TN-830 series has no "TN-860"; the high-yield version is TN-830XL. TN-880 is a 12,000-page super high-yield cartridge and TN-890 is a 20,000-page ultra high-yield cartridge for the HL-L6400DW and MFC-L6900DW only. The HL-L6200DW and MFC-L6700DW take TN-820, TN-850 or TN-880, all on the DR-820 drum.

If your model isn't listed, check the Brother USA product page or look it up in our Find Ink by Printer tool. You can find compatible toner cartridges for Brother models at Castle Ink's full cartridge catalog.

Step 2: Open the Front Cover

Press the front cover release button — on most Brother models this is a small button or lever on the left or right side of the front panel. The front cover swings open toward you.

On some MFC models (like the MFC-L2710DW or MFC-L2750DW), the cover is a single-pull panel that lays flat. Either way, open it fully and lay it flat or hold it open with one hand.

The drum unit and toner cartridge assembly will be visible inside the printer as a single unit.

Step 3: Remove the Drum Unit and Toner Cartridge Together

Grip the green handle (on many models) or the sides of the drum unit/toner cartridge assembly and slide it straight out of the printer. Pull gently but firmly — it should slide out without resistance.

Important: Do not touch the green drum surface (the photosensitive cylinder). Oils from your hands can damage the drum. Hold the assembly by the sides or handle only.

Set the drum unit assembly on a flat surface covered with a sheet of paper — this protects your surface from any residual toner powder that may fall.

Step 4: Separate the Toner Cartridge from the Drum Unit

While holding the drum unit with one hand, push down on the green lock lever (or tab) on the drum unit. This releases the toner cartridge from the drum.

With the other hand, pull the toner cartridge out of the drum unit by its handle. The toner cartridge is the smaller component that holds the powder; the drum unit is the larger frame that holds the green photosensitive roller.

Set the old toner cartridge aside. If you're going to recycle it, see our guide on How to Dispose of Toner Cartridges the Right Way for free take-back options from Brother, Staples, and Office Depot.

Step 5: Prepare the New Toner Cartridge

Unbox the new toner cartridge. Before installing it:

Remove all packaging — there will be orange or yellow protective covers and a pull-tab or strip. Remove everything.
Gently rock the cartridge side to side 5–6 times. This distributes the toner powder evenly inside before first use and helps you get a full-yield print from the start.
Pull the sealing tab — there is typically a plastic or paper tab on the cartridge that seals the toner opening. Pull it straight out completely. If this tab is not removed, no toner will flow and you'll get blank pages.

Step 6: Insert the New Toner Cartridge into the Drum Unit

Slide the new toner cartridge into the drum unit housing. You'll hear or feel it click into place when it's fully seated, and the green lock lever will lift back up on its own. The toner cartridge and drum unit should fit together snugly with no gaps.

Make sure the cartridge is aligned properly — it should only go in one way. If it's not sliding in easily, check the alignment and try again. Don't force it.

Before reinstalling, slide the green tab on the drum unit gently left and right a few times to clean the corona wire, then return it to its home position. A dirty corona wire is a common cause of vertical streaks right after a toner change.

Step 7: Reinstall the Drum Unit and Toner Cartridge Assembly

Slide the drum unit and toner cartridge assembly back into the printer. Push it all the way in until it stops — it should sit flush with the front of the printer cavity. You may feel a slight click when fully seated.

Close the front cover firmly until you hear it click shut. The printer will power on its initialization cycle, which takes about 30–60 seconds as it warms up the fuser. During this time, the printer may display a "Please wait" message.

Color Models: How Toner Replacement Differs

On Brother color lasers such as the HL-L3210CW, HL-L3270CDW, MFC-L3770CDW and the newer HL-L3280CDW, all four toners sit in one drawer-style drum unit. Open the front cover, pull the drum unit out by its green handle until it stops, then remove only the empty color by its handle (on many models you push the cartridge to unlock it first). Unpack the new cartridge, remove the protective cover, drop it into the matching color slot, and push the drum unit back in. Follow the color labels on the drawer; each slot is keyed to its color.

Step 8: Reset the Toner Counter (If Required)

On some Brother models, the printer will prompt you to confirm the toner replacement. If you see a message like "Replace Toner?" or "Did you replace toner cartridge?" on the LCD screen, select YES or confirm the replacement. This resets the toner page counter.

On most current models, the counter resets automatically when the printer detects a new cartridge through its chip or reset gear. The Menu > All Settings > Machine Info > Reset Parts Life path found on many touchscreen models is mainly for the drum and other parts, and on many models it doesn't list toner at all. If a "Replace Toner" message won't clear after installing a new cartridge, reseat the cartridge first, then see our step-by-step guide to resetting a Brother toner cartridge.

For compatible (third-party) cartridges, the chip or reset gear is pre-set to register as new on installation. If your printer still shows "low toner" after installing a compatible cartridge, try removing and reinserting it once, then power-cycling the printer.

Test Print

Once the printer has finished initializing, print a test page to confirm the new cartridge is working. On most Brother models:

On touchscreen models, go to Menu > All Settings > Printer > Print Options > Test Print (menu names vary slightly by model)
Or print any document from your computer

The first few pages after a new cartridge installation may have slightly uneven toner as the powder settles into the new cartridge's feed mechanism. This is normal and resolves within 2–3 pages.

How do I know if I need a new toner or a new drum?

Faded or light prints and a "Toner Low" or "Replace Toner" message point to toner. Repeating spots, gray backgrounds or a "Drum End Soon" or "Replace Drum" message point to the drum.

Brother tracks the two separately, so the printer usually tells you which one it wants. If you see dots or marks that repeat at the same spacing down the page, that's a drum symptom even without a message. Our guide on drum unit vs. toner cartridge explains the difference in detail.

How long does a Brother toner cartridge last?

Anywhere from about 1,200 pages for a standard cartridge like the TN-730 or TN-830 to 20,000 pages for the TN-890. For a typical home office printing 100-200 pages a week, a high-yield TN-760 or TN-830XL lasts roughly three to six months.

Rated yields assume about 5% page coverage, roughly a typed letter. Graphics, heavy bold text and full-page images use more toner per page, so real-world yield is often lower. Printing in toner save mode stretches it further for drafts.

Can I keep printing when it says Replace Toner?

Sometimes. Many Brother mono lasers let you switch the toner setting from "Stop" to "Continue" so you can keep printing until the output fades.

This is useful when you're waiting on a delivery, but print quality will drop and Brother won't guarantee results in continue mode. The full method for each model family is in our Brother toner reset guide.

Saving Money on Brother Toner Cartridges

OEM Brother toner cartridges can be expensive, especially if you print frequently. Compatible toner cartridges are built to the same rated page yield at 40–70% lower cost and do not void your printer warranty under U.S. law. For more on this, see our post on Does Using Compatible Ink Void My Printer's Warranty? One caution: Brother firmware updates have at times caused problems with some third-party cartridges, so consider turning off automatic firmware updates if your compatible toner is working well.

Popular compatible options for common Brother toner models:

TN-760 compatible (HL-L2350DW, MFC-L2710DW): Shop Castle Ink's compatible TN-760 and the matching DR-730 drum
TN-227 compatible (HL-L3210CW, MFC-L3770CDW): Shop the compatible TN-227 4-pack or the single TN-227BK black
TN-660 compatible (HL-L2300D, MFC-L2700DW): Shop Castle Ink's compatible TN-660 and the matching DR-630 drum
TN-830XL compatible (HL-L2460DW, MFC-L2820DW): Shop Castle Ink's compatible TN-830XL and the matching DR-830 drum
TN-850 compatible (HL-L5200DW, MFC-L5800DW): Shop Castle Ink's compatible TN-850 and the matching DR-820 drum

You can also browse Castle Ink's full range of compatible Brother toner at castleink.com/collections/all.

Troubleshooting: After Replacing, Printer Still Shows "Replace Toner"

If your printer continues showing a toner warning after installation:

Confirm the toner cartridge clicked fully into the drum unit
Confirm the drum unit assembly is fully seated in the printer
Power cycle the printer completely (off, unplug, wait 30 seconds, plug back in)
For compatible cartridges: check the chip alignment on the cartridge — it should be flush and clean
Follow the model-specific reset steps in our Brother toner reset guide (the Menu > All Settings > Machine Info > Reset Parts Life menu applies to the drum on most models, not the toner)

If you're still having problems, see our general guide on New Cartridge Not Working? Here's Why and How to Fix It, or the Printer Troubleshooting Center.

Summary

Replacing a Brother toner cartridge takes less than two minutes: open the front cover, pull out the drum unit, release the old toner, insert the new one after removing all packaging and the sealing tab, reinsert the assembly, and close the cover. Done. The printer resets and is ready to print within about a minute.

For the most cost-effective replacement toner, check Castle Ink's compatible Brother toner selection at castleink.com/collections/all.

Frequently Asked Questions

Do I need to replace the drum when I replace the toner?

No. On most Brother lasers the drum lasts through several toner cartridges, typically 12,000-30,000 pages. Replace it only when the printer asks or prints show drum symptoms.

What's the difference between TN-760 and TN-730?

They fit the same printers. The TN-730 is the standard cartridge (about 1,200 pages) and the TN-760 is the high-yield version (about 3,000 pages), which costs less per page.

Does the Brother HL-L2460DW use TN-760?

No. The HL-L2460DW and the rest of the newer L2400/L2800/L2900 family use TN-830 or TN-830XL toner with the DR-830 drum.

Why is my new Brother toner printing blank pages?

The protective seal or packing material is usually still on the cartridge. Remove it, reinstall, and print again.

Are compatible Brother toner cartridges safe for my printer?

Yes, a quality compatible toner is built to Brother's specifications and won't void your warranty under U.S. law. If a compatible cartridge ever causes a problem, the cartridge seller, not Brother, is responsible for that cartridge.

How do I dispose of an empty Brother toner cartridge?

Brother runs a free return program, and many office supply stores accept toner for recycling. Don't put toner cartridges in household trash.

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