HL-1870N
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FAQ & Fehlerbehebung |
Vertical black lines appear on the printout.
![](/g/b/img/faqend/faq00000006_015/eu_ot/en/90024/Black_lines.gif)
Please check the following points:
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Clean the primary corona wire of the drum unit. To see how to clean the corona wire of the drum unit, click here.
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Make sure the primary corona wire cleaner is at the home position.
- The toner cartridge may be damaged. Put in a new toner cartridge. To see how to replace the toner cartridge, click here.
- Make sure that a torn piece of paper is not inside the printer covering the scanner window.
- The fixing unit may be damaged. Click here to go to "Contact us" page.
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