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  1. #31
    Senior Tech 100+ Posts
    No black on colour prints and colour test page on ricoh mpc4503


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    Re: No black on colour prints and colour test page on ricoh mpc4503

    What things are.

    Today it is service in a town two hours away. so bring what you need to maintain MPC5503, MP 4054 x 2 and MP4000. On the way I received a message from a woman from the same town.

    As attached in the pdf, the lady told me that the black copy was not coming out... the sheet came out blank so she lowered the black unit, "cleaned" it and then went to install it again, she damaged the cylinder, removed film etc. dusted 'black (revealing).

    I didn't have a cylinder for 2503, so I had to remove the ends to be able to adapt the one from 5503 to 2503.. I put new developer etc.. nothing...copy without black. so I removed the end plugs again and adjusted the ground (pole to ground) of the cylinder...that was the problem...there was no pole to ground ground in the cylinder).

    Now,spectacular copy and printing.
    Attached Files Attached Files

  2. #32
    Service Manager 1,000+ Posts luca72's Avatar
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    Re: No black on colour prints and colour test page on ricoh mpc4503

    Quote Originally Posted by MIGUELMARCHENA View Post
    What things are.

    Today it is service in a town two hours away. so bring what you need to maintain MPC5503, MP 4054 x 2 and MP4000. On the way I received a message from a woman from the same town.

    As attached in the pdf, the lady told me that the black copy was not coming out... the sheet came out blank so she lowered the black unit, "cleaned" it and then went to install it again, she damaged the cylinder, removed film etc. dusted 'black (revealing).

    I didn't have a cylinder for 2503, so I had to remove the ends to be able to adapt the one from 5503 to 2503.. I put new developer etc.. nothing...copy without black. so I removed the end plugs again and adjusted the ground (pole to ground) of the cylinder...that was the problem...there was no pole to ground ground in the cylinder).

    Now,spectacular copy and printing.

    yes, metoo, today I fixed an mpc2051 that didn't print black, it was the developer unit broken, but our friend pixtech framwork, says he changed the entire pcdu, and the problem is still there, we hope he remembers to let us know how to solve it, and that it doesn't fall into oblivion
    "loneliness is an invention of the white man, when we are alone we talk to everything around us, we are never alone" (Ojibwa)

  3. #33
    Senior Tech 100+ Posts
    No black on colour prints and colour test page on ricoh mpc4503


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    Re: No black on colour prints and colour test page on ricoh mpc4503

    Quote Originally Posted by luca72 View Post
    yes, metoo, today I fixed an mpc2051 that didn't print black, it was the developer unit broken, but our friend pixtech framwork, says he changed the entire pcdu, and the problem is still there, we hope he remembers to let us know how to solve it, and that it doesn't fall into oblivion
    Friends, he explains it clearly.


    I give you the idea of ​​the mass or ground pole of the machine in that black sector, because that absence of mass or ground pole generates a blank copy.


    Already in mind you know that the unit is not, it concentrates on the machine... well that's what I do


    It's interesting, you learn without suffering.

  4. #34
    Service Manager 1,000+ Posts luca72's Avatar
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    Re: No black on colour prints and colour test page on ricoh mpc4503

    Quote Originally Posted by MIGUELMARCHENA View Post
    Friends, he explains it clearly.


    I give you the idea of ​​the mass or ground pole of the machine in that black sector, because that absence of mass or ground pole generates a blank copy.


    Already in mind you know that the unit is not, it concentrates on the machine... well that's what I do


    It's interesting, you learn without suffering.
    "real artists copy...real geniuses steal"*

    *Picasso
    "loneliness is an invention of the white man, when we are alone we talk to everything around us, we are never alone" (Ojibwa)

  5. #35
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    Re: No black on colour prints and colour test page on ricoh mpc4503

    Quote Originally Posted by luca72 View Post
    yes, metoo, today I fixed an mpc2051 that didn't print black, it was the developer unit broken, but our friend pixtech framwork, says he changed the entire pcdu, and the problem is still there, we hope he remembers to let us know how to solve it, and that it doesn't fall into oblivion
    Am still battling the nightmare. This is strange, after swapping PCDU from another working machine, problems persist. This is strange.

  6. #36
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: No black on colour prints and colour test page on ricoh mpc4503

    Quote Originally Posted by Pixtech Frameworks View Post
    Am still battling the nightmare. This is strange, after swapping PCDU from another working machine, problems persist. This is strange.
    I had one brand new KM machine where at the installation one color was completely missing sorry don't remember which one. Turned out that ribbon cable to laser unit was damaged and after cutting carefully a bit of damaged leads color appear
    Not necessarily your case but just something to consider. Good luck 🤞
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

    I don't reply to private messages from end users.

  7. #37
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    Re: No black on colour prints and colour test page on ricoh mpc4503

    Solution found guys,
    Polygon box was the curpit. After several weeks of non activeess in the machine, I remembered I had a dead and forgotten 6003 polygon box at the store, I inserted it on the 4503, behold black colour came out like magic, reinstalled old polygon box same no black.
    Thanks guys.

  8. #38
    Service Manager 1,000+ Posts luca72's Avatar
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    Re: No black on colour prints and colour test page on ricoh mpc4503

    Quote Originally Posted by Pixtech Frameworks View Post
    Solution found guys,
    Polygon box was the curpit. After several weeks of non activeess in the machine, I remembered I had a dead and forgotten 6003 polygon box at the store, I inserted it on the 4503, behold black colour came out like magic, reinstalled old polygon box same no black.
    Thanks guys.

    Thanks for the feedback, you never know what might happen to me.
    I see that that model has only one polygon motor, and it printed white without SC codes(!)...maybe the machine took some hits, and some mirrors or lenses from the black PCDU came off(?)
    "loneliness is an invention of the white man, when we are alone we talk to everything around us, we are never alone" (Ojibwa)

  9. #39
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    Re: No black on colour prints and colour test page on ricoh mpc4503

    I also have a no black problem, any chance you guys could help me out?

    Samsung Xpress C480W prints color but not black

  10. #40
    Field Supervisor 500+ Posts
    No black on colour prints and colour test page on ricoh mpc4503

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    Re: No black on colour prints and colour test page on ricoh mpc4503

    help you? they just told you how it was fixed.....

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