MFC-7840W
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FAQs & Troubleshooting |
This type of line is typically caused by dirt or white out (correction fluid) on the scanner unit. The scanner unit is the mechanism that reads the documents that are being sent or copied. This problem is usually resolved by cleaning the scanner unit.
Please follow the instructions listed below:
In addition to cleaning the glass strip with a soft lint-free cloth moistened with water, run your finger tip over the glass strip to see if you can feel anything on it. If you feel dirt or debris, clean the glass strip again concentrating on that area. You may need to repeat the cleaning process three or four times. To test, make a copy after each cleaning.