The drum is a separate part from the toner cartridge, and you replace it differently
The drum unit on a Brother printer is the cylinder that holds the toner and transfers it to paper. It wears out over time — typically after 15,000 to 30,000 pages, depending on your model — and when it does, you'll see dark streaks, spots, or lines on every page you print. Unlike the toner cartridge, which you can swap out in seconds, the drum requires you to open the printer's main compartment and remove several parts in order.
The exact steps depend on whether you have a laser printer or an all-in-one (which prints, copies, and scans). Brother makes both, and they're accessed differently. The process takes about five to ten minutes once you have the replacement drum in hand.
Key Takeaways
- The drum unit is separate from the toner cartridge and lasts longer, but when it fails you'll see streaks or spots on every page.
- You can order a replacement drum directly from Brother's website or from retailers like Amazon and Staples, using your exact printer model number.
- Most Brother printers require you to open the front panel, remove the toner cartridge first, then lift out the drum unit by its handle.
- The drum and toner cartridge are not the same part — replacing one does not replace the other, and you may need both if your printer is old.
- If streaks continue after you install a new drum, the fuser unit (which heats the toner) may also be worn and need replacement.
Find your exact printer model and order the right drum
Brother drum units are model-specific. A drum for a Brother HL-L8360CDW will not fit a Brother HL-L2350DW. You need to know your exact model number before you order, because ordering the wrong one means a return and delay.
Find your model number on the printer itself — it's usually on a sticker on the back or inside the front panel — or in the printer settings menu on your computer. Once you have it, go to Brother's official parts website (parts.brother.com) and search for your model. The drum unit will be listed separately from the toner cartridge. Write down the part number (it typically starts with "DR-" followed by numbers). You can also buy from Amazon, Staples, or office supply retailers, but verify the part number matches your model before checkout.
Genuine Brother drums cost between $80 and $150 depending on the model. Third-party compatible drums are cheaper but may wear faster or cause print quality issues. For a printer you plan to keep for several years, a genuine drum is usually worth the extra cost.
Open the printer and remove the toner cartridge first
Turn off the printer and unplug it from the wall. Wait a few minutes for the fuser unit (which heats the toner) to cool down — it gets hot during printing and can burn your fingers.
Open the front access panel. On most Brother laser printers, this is a hinged door that swings down or to the side. On all-in-ones, you may need to lift the scanner lid first, then open the cartridge compartment below it. The toner cartridge will be visible inside, usually held in place by a green or blue handle.
Grasp the toner cartridge handle and pull it straight toward you. It should slide out without resistance. Set it aside on a clean surface — you'll reinstall it after you replace the drum. Do not shake it or expose the toner opening to light for long periods, as toner can spill and is difficult to clean.
Lift out the drum unit by its handle
Once the toner cartridge is out, you'll see the drum unit behind it. It's a large cylinder, usually black or dark gray, with a handle on top. The handle is typically green or blue plastic.
Grasp the handle firmly and pull the drum straight toward you, the same direction you pulled the toner cartridge. It may require a bit more force than the cartridge — the drum is heavier and sits in a tighter space. If it doesn't budge, check that you've fully opened the access panel and that no clips or levers are holding it in place. Some Brother models have a small lever you must flip before the drum will release.
Once the drum is out, set it aside. Do not touch the shiny metal cylinder inside — the oils from your skin can damage the surface and cause print quality problems later.
Install the new drum and replace the toner cartridge
Remove the new drum from its packaging. It will have a protective plastic cover over the metal cylinder. Leave this cover in place until the last moment — it protects the drum during shipping and handling.
Slide the new drum into the compartment, aligning it with the guides on either side. Push it straight in until you hear or feel a click, which means it's seated properly. The handle should sit flush with the printer frame.
Now reinsert the toner cartridge. Slide it in the same way you removed it, pushing straight in until it clicks into place. Close the access panel and plug the printer back in. Turn it on and run a test page. The printer may display a message about a new drum being installed — this is normal and will clear after the first few pages print.
What to do if print quality problems continue
If you still see streaks, spots, or faded areas after installing a new drum, the problem may not be the drum itself. The most common culprit is the fuser unit, which is the part that heats and bonds the toner to the paper. Fuser units wear out around the same time as drums, and if your printer is several years old, you may need to replace both.
Other causes of continued streaks include a dirty pickup roller (the rubber wheel that pulls paper from the tray) or a worn separation pad. These are smaller, cheaper parts that you can clean or replace yourself. Check Brother's support page for your model to see if cleaning instructions are available before you order replacement parts.
If the problem started when ready after you installed the new drum, double-check that you removed the protective plastic cover from the drum's metal cylinder. If the cover is still on, the toner cannot transfer to paper properly, and every page will be faded or blank.
Dispose of the old drum responsibly
Brother and most office supply retailers have drum recycling programs. You can mail the old drum back to Brother for free using a prepaid label (available on their website), or drop it off at a Staples, Office Depot, or similar store — most accept used printer parts for recycling at no charge.
Do not throw the drum in the trash. Toner is a fine powder that can become airborne and is not safe for landfills. Recycling takes five minutes and keeps the drum out of the waste stream.
Frequently Asked Questions
Can I replace just the drum without replacing the toner cartridge?
Yes. The drum and toner cartridge are separate parts with different lifespans. You can replace the drum while keeping the same toner cartridge, or vice versa. However, if your printer is old and both parts are worn, replacing only one may not fully solve print quality problems.
How do I know if the drum is bad or if it's the toner cartridge?
Streaks and spots that appear on every page usually mean the drum is worn. Faded or light printing usually means the toner cartridge is low or empty. If you're unsure, try a new toner cartridge first — it's cheaper and faster to replace. If the problem continues, the drum is likely the issue.
What if the drum won't slide out?
Make sure the printer is off and cool, and that the access panel is fully open. Some Brother models have a small green or blue lever near the drum handle that you must flip or press before the drum will release. Check your printer's manual or Brother's support page for your specific model if the drum still won't budge.
Is a third-party drum as good as a genuine Brother drum?
Third-party drums are cheaper but may not last as long or produce the same print quality. If you print heavily, a genuine drum is usually worth the extra cost. If you print lightly and want to save money, a compatible third-party drum is a reasonable choice, but buy from a reputable seller with good reviews.
Do I need to reset anything after I install a new drum?
Most Brother printers automatically detect the new drum and reset the page counter. If your printer displays an error message after installation, turn it off and back on — this usually clears the message. If the error persists, check Brother's support page for your model to see if a manual reset is needed.