The faxes I send are always received with a black vertical line down the page.
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.
Follow the steps below to resolve the issue:
Lift the document cover. Clean the white plastic surface (1) and scanner glass (2) underneath it with a soft lint-free cloth moistened with water.
(ADF models only)
Clean the white bar (3) and the scanner glass strip (4) underneath it with a soft lint-free cloth moistened with water.
In addition to cleaning the scanner glass and glass strip with a soft lint-free cloth moistened with water, run your finger tip over the glass to see if you can feel anything on it. If you feel dirt or debris, clean the glass 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.
Close the document cover.
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