HL-3150CDN

FAQs & Troubleshooting

FAQs & Troubleshooting

Clean the drum unit

If your printout has dots at 94 mm (3.7 in.) intervals, clean the drum unit following the steps below:


  1. Make sure the machine is in Ready mode.

  2. Press the UP or Down arrow key to choose Machine Info.. Press OK.
  3. Press the UP or Down arrow key to choose Drum Dot Print. Press OK.
  4. Press and hold down Power Key to turn the machine off.

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

    Open top cover


  6. The color of printed dots is the color of the drum you should clean. Take out the toner cartridge and drum unit assembly of the color causing the problem.

    Take out toner and drum


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

    Take out toner from drum


  8. Turn the drum unit as shown in the illustration. Make sure that the drum unit gear (1) is on the left side.

    Turn drum unit


  9. Check the drum dot check sheet printed in Step 3.
    • Dot location: The sheet has eight numbered columns. The number of the column with the printed dot in it is used to find the dot position on the drum.

  10. Use the numbered markers next to the drum roller to find the mark. For example, a dot in column 2 on the check sheet would mean that there is a mark in the "2" region of the drum.

    Drum roller numbered markers


  11. Turn the edge of the drum unit toward you by hand while looking at surface of the suspected area.

    Turn drum unit edge


  12. When you have found the mark on the drum that matches the drum dot check sheet, wipe the surface of the drum gently with a cotton swab until the mark on the surface comes off.

    Wipe drum surface


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

    Put in toner in drum


  14. Slide the toner cartridge and drum unit assembly into the machine, making sure you match the toner cartridge color to the same color label on the machine.

    Put in toner and drum


    Toner color match


  15. 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

HL-3150CDN, HL-3170CDW

Content Feedback

To help us improve our support, please provide your feedback below.

Step 1: How does the information on this page help you?

Step 2: €Are there any comments you would like to add?

Please note this form is used for feedback only.