MFC-9340CDW

FAQs & Troubleshooting

FAQs & Troubleshooting

Replace Toner

Follow the steps below to replace the toner cartridge:


For the order number (Order No.) of the toner cartridge, click here to see the Consumables & Options page.



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. Open the top cover until it locks in the open position.

    Open top cover

  3. Take out the toner cartridge and drum unit assembly for the color shown on the machine's display.

    Take out toner and drum

  4. Push down the green lock lever and take the toner cartridge out of the drum unit.

    Take out toner from drum

  5. Unpack the new toner cartridge. Hold the cartridge level with both hands and gently shake it from side to side several times to spread the toner evenly inside the cartridge.

    Shake toner

  6. Pull off the protective cover.

    Pull off protective cover

  7. Put the new toner cartridge firmly into the drum unit until you hear it lock into place. If you install it correctly, the green lock lever on the drum unit will lift automatically.

    Put in toner in drum

  8. Clean the corona wire inside the drum unit by gently sliding the green tab from left to right and right to left several times.

    Clean corona wire

    Be sure to return the tab to the home position (Tab) (1). The arrow on the tab must be aligned with the arrow on the drum unit. If it is not, printed pages may have a vertical stripe.


  9. Slide the toner cartridge and drum unit assembly into the machine. Make sure you match the toner cartridge color to the same color label on the machine.

    Put in toner and drum


    Toner color match


  10. To keep good print quality, clean the corona wire inside the drum unit of the other colors. (Repeat Step 3, Step 8, and Step 9.)

  11. Close the top cover of the machine.

If your question was not answered, have you checked other FAQs?

Have you checked the manuals?

If you need further assistance, please contact Brother customer service:

Related Models

DCP-9020CDN, HL-3180CDW, MFC-9130CW, MFC-9330CDW, MFC-9340CDW

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