HL-4040CDN
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FAQs & Troubleshooting |
How can I clean the corona wire of the drum unit?
If you have print quality problems, clean the corona wire as follows:
DO NOT use flammable substances or any type of spray to clean the inside or outside of the machine.
Turn off the printer power switch. Press the front cover release button and then open the front cover.
Hold the green handle of the drum unit. Lift the drum unit up and then pull it out until it stops.
Push to release the latches of the white corona wire cover (1), and then open the cover.
We recommend that you clean the corona wire for each of the colors. If you want to clean only the corona wire of the color that caused the print quality problem, see the illustration below to identify the position of each of the corona wires.
Be sure to return the tab to the home position (1). If you do not, printed pages may have a vertical stripe.
Repeat steps 4-6 to clean each of the remaining corona wires.