The Brother machine has separate consumables the toner cartridge and the drum unit. Verify you replace only the drum unit and not the toner cartridge. If you want to know their difference, refer to "What is the difference between the toner cartridge and the drum unit?"

Replace the drum following the steps below:
NOTE: Illustrations shown below are from a representative product and may differ from your Brother machine.
 

1. Make sure that the machine is turned on.
    
2. Press the front cover release button and then open the front cover.
   
   

    

3. Hold the green handle of the drum unit. Pull the drum unit out until it stops.
   
   

    

4. Turn the green lock lever (1) at the left of the machine counterclockwise to the release position. Holding the green handles of the drum unit, lift the front of the drum unit and remove it from the machine.
   
   

    

   • We recommend that you place the drum unit and/or the toner cartridge on a clean, flat surface with a sheet of disposable paper or cloth underneath it in case you accidentally spill or scatter toner.
      
   • To prevent damage to the machine from static electricity, DO NOT touch the electrodes shown in the illustration.
    
   

    

   Hold the green handles of the drum unit when you carry it. DO NOT hold the side of the drum unit.

    
5. Hold the handle of the toner cartridge and slightly push it to unlock it. Then pull it out of the drum unit. Repeat this for all the toner cartridges.
   
   
   
   

    

    

    

    

   • DO NOT put a toner cartridge into a fire. It could explode, resulting in injuries.
      
   • DO NOT use cleaning materials that contain ammonia, alcohol, any type of spray, or any type of flammable substance to clean the outside or inside of the machine. Doing this may cause a fire or electrical shock.
   • Be careful not to inhale toner.
   • Handle the toner cartridge carefully. If toner scatters on your hands or clothes, wipe or wash it off with cold water at once.
      
   • We recommend that you place the drum unit and/or the toner cartridge on a clean, flat surface with a sheet of disposable paper or cloth underneath it in case you accidentally spill or scatter toner.
      
   • To avoid print quality problems, DO NOT touch the shaded parts shown in the illustrations.
    

   Go to http://www.brother.com/original/index.html for instructions on how to return your used consumable items to the Brother collection program. If you choose not to return your used consumable, please discard the used consumable according to local regulations, keeping it separate from domestic waste. If you have questions, call your local waste disposal office.

    
6. Unpack the new drum unit and remove the protective cover.
   
   

    

   • Wait to unpack the new drum unit until immediately before you put it in the machine. Exposure to direct sunlight or room light may damage the drum unit.
      
   • To avoid print quality problems, DO NOT touch the shaded parts shown in the illustrations.
    

    

   

    
7. Hold the handle of the toner cartridge and slide the toner cartridge into the new drum unit, then slightly pull it toward you until you hear it click into place. Make sure that you match the toner cartridge color to the same color label on the drum unit. Repeat this for all the toner cartridges.
   
   

   C-Cyan M-Magenta Y-Yellow K-Black
    

8. Make sure the green lock lever (1) is in the release position as shown in the illustration.
   
   

    

9. Match the guide ends (2) of the drum unit to the right arrow marks (1) on both sides of the machine, then gently slide the drum unit into the machine until it stops at the green lock lever.
   
   

    

10. Turn the green lock lever (1) clockwise to the lock position.
    
    

     

11. Push the drum unit in until it stops.
    
    

     

12. Close the front cover of the machine.
    
    When you replace a drum unit with a new one, you need to reset the drum counter by completing the following steps:
    *If your Brother machine has a Touchscreen, please follow the steps under "For Touchscreen models" below.

     

    1. Press Menu.
    2. Press the Up or Down Arrow key to choose Machine Info.. Press OK.
    3. Press the Up or Down Arrow key to choose Reset Menu. Press OK.
    4. Press the Up or Down Arrow key to choose Drum. Press OK.
    5. Press 1 to reset the drum unit counter.
    6. Press Stop/Exit.

     

    <For Touchscreen models>
    1. Press MENU on the Touchscreen.
    2. Press the Up or Down Arrow key to display Machine Info.. Press Machine Info..
    3. Press Reset Menu.
    4. Press Drum.
    5. The machine will display Reset Drum?.
    6. Press Yes, and then press Stop/Exit.