Brother DCP-7040 - Manual (Page 58)

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Troubleshooting
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IMPORTANT
For technical help, you must call the country where you bought the machine. Calls must be
made from within that country.
If you are having difficulty with your machine
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If you think there is a problem, check the chart below and follow the troubleshooting tips. You can
solve most problems by yourself.
If you need additional help, the Brother Solutions Center offers the latest FAQs and
troubleshooting tips.
Visit us at http://solutions.brother.com/.
Troubleshooting and routine
maintenance
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Copy quality difficulties
Difficulties Suggestions
Vertical black line appears in
copies. Black vertical lines on copies are typically caused by dirt or correction fluid on the
glass strip (DCP-7040 only) , or the corona wire for printing is dirty. (See Cleaning
the scanner glass on page 63 and Cleaning the corona wire on page 66.)