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Fault code J50 & dark strip.

Turn on copier and after about 15 seconds it shows J50.

Copier also has a dark strip ,within which, letters double image (ie each letter repeats about 2mm from original). This dark strip is about three
quarters of the way down the page and and is about 70cm wide. This appeared right after I replaced the drum cleaning blade and before I cleaned the optics.
It neither had a dark patch nor was it double imaging before I replaced
the drum cleaning blade,before this, all it had was a striped line typical of a worn drum cleaning blade.

I then stopped the copier before the paper exited to check where the double imaging (and dark strip) was coming from. It was on the copy before it went through the heat rollers.

It was only after I had had the imaging unit in & out 3 or 4 times that
the J50 came up.

Posted by on

  • kevinhay May 18, 2009

    The copier is a Mita 1560 (old analogue) I put in the make & model

    in the space provided but obviously it did not transmit.

  • Chris Coughlin
    Chris Coughlin May 11, 2010

    You get a "A+" with explaining your problem... But you left out the most important 2 things... Make & Model????



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This is for a Mita 1560 Photocopier (analog)
J50 was caused by exit sensor not sitting correctly in its bracket,I fixed this by pushing it until it
clicked back in.
The dark lines & double imaging can be caused light getting onto the drum ,or if the drum gets
cold (so I have been advised) which one it was for sure I will never know because when I
returned the next day & fixed the exit sensor the copy was OK.

Posted on May 21, 2009


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