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  1. #1
    Technician smrtamang's Avatar
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    Konica Minolta Bizhub Pro C6501 Error Code C2804

    Hi Frens,

    I have encountered error code C2804 with my Konica Minolta Bizhub Pro C6501. It's happening again n again so how to fix it properly.


  2. #2
    Trusted Tech 50+ Posts CKiiza's Avatar
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    Have you done any PM lately? what happened before it displayed the error code.


  3. #3
    Service Manager 100+ Posts


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    I just had this same code on a 6501, how do your test prints look? If your test prints look good check the color Reg. sensor, cln or replace. Mine ended up being the color Reg Sensor unit. The 2804 refers to black patch error in gamma correction.

    Last edited by bizhub1; 01-13-2011 at 02:28 PM.

  4. #4
    Service Manager 250+ Posts ineo+6501's Avatar
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    Yep, colour reg sensor assembly probably needs a clean.

    Also, check that the transfer belt hasn't wandered beacuse this can cause the reg sensors to get pretty filthy.


  5. #5
    Technician smrtamang's Avatar
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    Thank u all for your kind response after i cln sensors code is not showing now but black print quality is down. It's not like before i mean black color print quality is not good.


  6. #6
    Service Manager 250+ Posts ineo+6501's Avatar
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    Run the colour registration adjustment from the adjustment screen.


  7. #7
    Service Manager 100+ Posts


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    Also you can run the recall standard data under process and run all adj. again


  8. #8
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    Re: Konica Minolta Bizhub Pro C6501 Error Code C2804

    Hi,
    i have same problem with C5501,error c-2804.
    Week ago it start showing daily c-2804 on startup but simply off/on reslove problem.
    Print quality was ok.
    Now it can not be turned on anymore, c-2804
    I tryied clean sensors first,no affect,then i pull out complete color registration unit,developing unit k and transfer belt and try in other machine and it works ok.
    One more thing i see is that on transfer belt after pulling out you can see yellow,magenta and cyan tone line but black is missing.
    Anybody can help with possible solutions?
    Hv board?...

    Regard


  9. #9
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    Re: Konica Minolta Bizhub Pro C6501 Error Code C2804

    Hi all,

    i also have this code on my C6500, please help


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