HL-4000CN

FAQs & Troubleshooting

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Vertical black lines appear on the print out.

The print head cartridge, transfer roll cartridge or fuser unit might be old or damaged. Check the print head cartridge, transfer roll cartridge and fuser unit and replace them as necessary.

To see how to replace the print head cartridge, click here.
To see how to replace the transfer roll cartridge, click here.
To see how to replace the fuser unit, click here.

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

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Related Models

HL-4000CN, HL-4200CN

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FAQs & Troubleshooting

Vertical black lines appear on the print out.

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

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HL-4000CN

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