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  1. #1
    Senior Tech 100+ Posts
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    C6500/C6501 Black spots on Black Drum

    Is anyone out there having any problems with small black spots on C6500 Black drums?

    I have been to 5 different machines over the past couple of weeks, all in different enviroments and on every machine have had to change the black drum because of small black spots on the drum.

    The machines are well within the 200K service interval and have done between 20K and 80K.

    Thanks

  2. #2
    Expert Tech 250+ Posts jma676's Avatar
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    Someone or something is damaging the Drums, I think you mean that the sensitive area of the Drum was damaged, leaving a small point.

    In some cases of high humidity, can cause this fault for a crash, but I guarantee that in normal conditions this does not happen, maybe if you hit with something or someone.

  3. #3
    Senior Tech 100+ Posts jrf's Avatar
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    I have only 2 of these machines but i have had to replace 3 drums in the last 2 weeks because of blank spots as a result of tiny marks on drums.

  4. #4
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    The drum surface is not damaged, with a small piece of cloth you can flick away the small toner spots and the green drum surface seems perfectly ok. however they will quickly return usually within 2K. Replacing the drum is the only option...

  5. #5
    RIkon Boy 50+ Posts
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    This is a known issue to do with the coating on the drums, TAUS1000512EN00.
    The only recommendation is to fit the 102C drum part no.A0400Y4

  6. #6
    Service Manager 250+ Posts ineo+6501's Avatar
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    What Avalon said.......... Fit the new type drum from the 6501. 102C.

  7. #7
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    The 102C is the only type of drum we fit...

  8. #8
    Expert Tech 250+ Posts jma676's Avatar
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    Konica Minolta Bizhub Pro C5500/C6500/C5501/C6501/C65hc Drum Unit (DU-102)

    Originally: DU-102
    Actualization: DU-102B / DU-102C

  9. #9
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    now that you mentioned i have had the same problem a few times in the last month with those drums (DU-102C), i wonder if they had a bad batch of drums....

  10. #10
    Field Supervisor 1,000+ Posts RRodgers's Avatar
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    Has it been hot?
    Color is not 4 times harder... it's 65,000 times harder. They call it "TECH MODE" for a reason. I have manual's and firmware for ya, course... you are going to have to earn it.

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