Model discontinued. This page is no longer updated.

HL-4000CN

FAQs & Troubleshooting

FAQs & Troubleshooting

How do I clean the Density Sensor?

 

  1. On the printer's right side, press the side of the power switch marked [O] to turn off the printer.
  2. Push up button "A" (1) and fully open the front cover (2).
  3. Grip the orange tabs at both ends of the transfer roll and gently lift it out of the printer.

    Lift the roll carefully to prevent waste toner from spilling out.

     
  4. Gently wipe the density sensor window with a clean dry cloth or cotton swab.

    Do not allow anything hard to come in contact with the density sensor window. Do not use excessive force to clean the window.

     
  5. Replace the transfer roll cartridge. Grip the orange U-shaped tabs as shown.

  6. Insert the pins at both ends of the transfer roll cartridge into the bearings inside the printer.
  7. To lock the transfer roll cartridge into the printer, push down on the tabs until you hear a click.

  8. Close the front cover.

  9. On the printer's right side, press the side of the power switch marked [I] to turn on the printer.

     

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-4000CN, HL-4200CN

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