![Print Quality Problem - White lines across the page](/g/b/img/faqend/faq00000211_024/gb/en/21814/WhiteLine_HR1.jpg)
Please check the following points to solve the problem:
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Make sure that you use paper that meets our specifications. A rough surfaced paper or thick print media can cause problems.
Please refer to FAQs, "What kind of paper can I use? " and "What is the recommended paper?".
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Make sure that you choose the correct media type in the printer driver.
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Make sure that a torn piece of paper is not stuck inside the machine blocking the scanner.
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The problem may disappear by itself. Print multiple pages to clear this problem, especially if the machine has not been used for a long time.
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The drum unit may be damaged. Put in a new drum unit. Put in a new drum unit.
Please refer to the instructions, "REPLACE DRUM".