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  1. #1
    Senior Tech 100+ Posts selmila's Avatar
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    Bizhub c652 TCR level Black to High C-2558

    hi.

    C 652 black print is poor, the TCR level is 14.20 which means high toner density detection in developer but there is no toner in the developer! i have changer the developer but the machine get stuck at C 2558!

  2. #2
    Service Manager 1,000+ Posts
    Bizhub c652 TCR level Black to High C-2558

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    Re: Bizhub c652 TCR level Black to High C-2558

    Quote Originally Posted by selmila View Post
    hi.

    C 652 black print is poor, the TCR level is 14.20 which means high toner density detection in developer but there is no toner in the developer! i have changer the developer but the machine get stuck at C 2558!
    I presume there is toner in bottle and hopper and it is supplied to the Dev.

    If it is then:

    Print 20x A3 K halftone at full 255 gradient and then "teach" the TCR sensor in Dev unit that it has incorrect TCR level due to being in New environment. To do it select Manual toner add in service mode.

    Sent from my Mi A1 using Tapatalk
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  3. #3
    Senior Tech 100+ Posts Zesti's Avatar
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    Re: Bizhub c652 TCR level Black to High C-2558

    Have you changed only developer on developer unit?
    If there is bad or no TCR sensor connection it give high TCR value.
    Check your TCR sensor connection.

  4. #4
    Senior Tech 100+ Posts selmila's Avatar
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    Re: Bizhub c652 TCR level Black to High C-2558

    Quote Originally Posted by habik View Post
    I presume there is toner in bottle and hopper and it is supplied to the Dev.

    If it is then:

    Print 20x A3 K halftone at full 255 gradient and then "teach" the TCR sensor in Dev unit that it has incorrect TCR level due to being in New environment. To do it select Manual toner add in service mode.

    Sent from my Mi A1 using Tapatalk
    hi.

    yes the toner bottle and the hopper is good.

    i cant print any test patters due to machine stuckon C 2558.

  5. #5
    Senior Tech 100+ Posts selmila's Avatar
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    Re: Bizhub c652 TCR level Black to High C-2558

    Quote Originally Posted by Zesti View Post
    Have you changed only developer on developer unit?
    If there is bad or no TCR sensor connection it give high TCR value.
    Check your TCR sensor connection.
    hi zest.
    The TCR sensor connection is good.

  6. #6
    Service Manager 5,000+ Posts
    Bizhub c652 TCR level Black to High C-2558

    copier tech's Avatar
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    Re: Bizhub c652 TCR level Black to High C-2558

    Quote Originally Posted by Zesti View Post
    Have you changed only developer on developer unit?
    If there is bad or no TCR sensor connection it give high TCR value.
    Check your TCR sensor connection.
    This is an important question "Have you changed only developer or developer unit?"
    Let us eat, drink, and be merry, because tomorrow we may die!

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  7. #7
    Senior Tech 100+ Posts selmila's Avatar
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    Re: Bizhub c652 TCR level Black to High C-2558

    Quote Originally Posted by copier tech View Post
    This is an important question "Have you changed only developer or developer unit?"

    only the Developer is changed

  8. #8
    Senior Tech 100+ Posts Zesti's Avatar
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    Re: Bizhub c652 TCR level Black to High C-2558

    Quote Originally Posted by selmila View Post
    only the Developer is changed
    Which developer you put in, also what kind of toner you are using, generic or original. I have a bad feeling about your toner and developer.

  9. #9
    Service Manager 5,000+ Posts
    Bizhub c652 TCR level Black to High C-2558

    copier tech's Avatar
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    Re: Bizhub c652 TCR level Black to High C-2558

    Quote Originally Posted by selmila View Post
    only the Developer is changed
    So that is not an OEM part.

    Fit a genuine KM dev unit that will resolve your issue.
    Let us eat, drink, and be merry, because tomorrow we may die!

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  10. #10
    Senior Tech 100+ Posts selmila's Avatar
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    Re: Bizhub c652 TCR level Black to High C-2558

    Quote Originally Posted by copier tech View Post
    So that is not an OEM part.

    Fit a genuine KM dev unit that will resolve your issue.
    unit and toner is original and 40% life done

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