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  1. #11
    Technician UCPrint's Avatar
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    Re: MP C3500 Magenta drum problem

    Does the mark on the drum rub off or is their a nick on the drum?
    Did you replace the dev unit or just redev it? if you just re deved it then its possible to still have toner debris in the unit which will contaminate the charge roller.


  2. #12
    Technician
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    Re: MP C3500 Magenta drum problem

    Quote Originally Posted by Butrus View Post
    Dot on magenta drum apeared.I changed the drum..good for awhile...apeared again.
    Changed the whole unit with developer and everything...good for awhile...apeared again.
    Changed the drum again and whole transfer belt unit(on inspection the old one looked fine) ...good for awhile...apeared again.

    The dot is always visable on the drum...looks like mechanical defect...like little cut...

    Its always only on magenta drum...

    Any suggestions?

    THANX!!!


    replace the PCU and toner


  3. #13
    Senior Tech 100+ Posts
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    Re: MP C3500 Magenta drum problem

    I replaced the PCU
    The nick is on the drum...can not be whiped off
    I also replaced the whole dev. unit,not yust developer...

    Toner is the same for all...CMYK
    I have problem only with M


  4. #14
    Service Manager 2,500+ Posts TonerMunkeh's Avatar
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    Apr 2008
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    Re: MP C3500 Magenta drum problem

    Is the screw lock on the front of the PCU cover? Could it be possible it is missing, someone is deliberately taking the drum unit out and damaging it?

    Computers are serious tools, Michael!

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