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  1. #1
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    No black on colour prints and colour test page on ricoh mpc4503

    Good Day All,
    Has anyone come across sudden black disappearance both on colour prints, colour test page and even counter page, even after swapping PCDU image still remains same. Attached is sample.
    Attached Images Attached Images

  2. #2
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    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

    It could be the K transfer roller in the ITB assembly. If the cam that lifts it when the ITB assembly is latched in place fails, you get either no black or very weak black.

  3. #3
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    Re: No black on colour prints and colour test page on ricoh mpc4503

    If you interrupt the job and check the drum physically, can you see traces of the print image on it?
    It is likely what Slim said and something is off with the ITB/Black transfer roller. If all the other colors are fine then it can really only be these two things as everything else should affect all colors.

  4. #4
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    Re: No black on colour prints and colour test page on ricoh mpc4503

    Quote Originally Posted by slimslob View Post
    It could be the K transfer roller in the ITB assembly. If the cam that lifts it when the ITB assembly is latched in place fails, you get either no black or very weak black.
    Tried switching with another ITB still the same no black.

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

    Quote Originally Posted by RicohBoomer View Post
    If you interrupt the job and check the drum physically, can you see traces of the print image on it?
    It is likely what Slim said and something is off with the ITB/Black transfer roller. If all the other colors are fine then it can really only be these two things as everything else should affect all colors.
    Tried interrupting the Printing, no traces of black image on DU or ITB.

  6. #6
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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
    Tried interrupting the Printing, no traces of black image on DU or ITB.
    Does the drum rotate at all? I assume it does because I think it throws an SC code if it doesn't rotate.
    I guess the only other thing I can point to is the power pack that charges each respective transfer roller. If you have another machine to pick from you could try replacing that and see if it changes anything.
    Although only one color breaking and with no SC code to boot is pretty rare.

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

    confirm the dv tank are rotating, check the two white gear from the front side of pcdu are turning.
    If not turning check the solenoid at the back that controlling the black dv tank motor.

  8. #8
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    Re: No black on colour prints and colour test page on ricoh mpc4503

    Quote Originally Posted by RicohBoomer View Post
    Does the drum rotate at all? I assume it does because I think it throws an SC code if it doesn't rotate.
    I guess the only other thing I can point to is the power pack that charges each respective transfer roller. If you have another machine to pick from you could try replacing that and see if it changes anything.
    Although only one color breaking and with no SC code to boot is pretty rare.
    Drum rotates even when I initialize TD sensor black it completes. Where's is the powerpack located.

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

    Quote Originally Posted by ccchuah View Post
    confirm the dv tank are rotating, check the two white gear from the front side of pcdu are turning.
    If not turning check the solenoid at the back that controlling the black dv tank motor.
    DV tank is rotating even at TD Initialization sc3030-003 it rotates while cheating on the front door

  10. #10
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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
    Drum rotates even when I initialize TD sensor black it completes. Where's is the powerpack located.
    You have to loosen the controller box and swing it out and then you'll see this red marked PCB.
    Once you get there you can't really miss it.
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