Clean The Scanner - Brother MFC-J4340DW Online User's Manual

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Clean the Scanner

1. Unplug the machine from the electrical socket.
2. Lift the document cover (1). Clean the scanner glass (2) and the white plastic (3) with a soft lint-free cloth
moistened with water.
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3. In the ADF unit, clean the white bar (1) and the glass strip (2) with a lint-free cloth moistened with water.
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If you feel dirt or debris, clean the glass again. You may need to repeat the cleaning process three or four
times. To test, make a copy after each cleaning attempt.
When there is a spot of dirt or correction fluid on the glass strip, the printed sample shows a vertical line.
After the glass strip is cleaned, the vertical line is gone.
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