Question about Canon NP 6551 Black and White Copier

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We got an error message E020 and it says to turn the machine on and off again. We did and it didn't go away. Is there anything else we can do?

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Toner Concentration sensor is faulty

Posted on Aug 08, 2010

  • tripsdad544 Nov 18, 2010

    Actually it is probably just dirty. Take the two out and clean them then turn the machine on again and it will likely go away. The two sensors are at 2 o'clock and 4 o'clock around the photoreceptor belt.

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I have looked it up and what it says about it I have put down for you so you can gave it a try hope it works for you.
Approved
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