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  1. #11
    Not a service manager 2,500+ Posts Iowatech's Avatar
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    Re: MP6500 fading to grey

    Just to take this in a somewhat different direction, how many prints per month are being made on that machine?
    The MP 6500 is meant to be used for large jobs, if you aren't making enough prints per job per month the toner feed doesn't run long enough to keep up, resulting in prints with poor density.
    On older machines, decreasing the value for toner feed time in service mode helped sometimes (that makes the toner feed system run longer for some reason), but there's a chance you just have a machine that is too large for your needs.

  2. #12
    Senior Tech 250+ Posts vargue's Avatar
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    Re: MP6500 fading to grey

    ihave this issue i suspect in devolper is fake .we have big problem in dealers . most type run good is typ14 original. it's block buster. with complet maintenance machine run sharp

  3. #13
    Field Supervisor 500+ Posts Codex's Avatar
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    Re: MP6500 fading to grey

    Hello, i'm writing from Italy

    Check if you have the TYPE 9002 Toner in that machine (Made in France), we have big problems with this toner, reported to Ricoh Europe, they confimed that there is an issue with this toner and they promised to make tests in laboratory (in Netherland), ALL our machines (200!) have grey copies after a while, even if Developer has only 50k or so......At the moment we clean the mag roller with a copper brush, and also the doctor blade, and it works for a while......if not the only (temporary ) solution is to change Developer (confirmed by Ricoh Italy Supervisor).

  4. #14
    Trusted Tech 50+ Posts
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    Re: MP6500 fading to grey

    Quote Originally Posted by Zaxxon View Post
    Toner can get stuck to the magnet roller surface, always clean this when changing developer.
    Check the tonerhopper/supply is assembled correct. Replace the toner recycle part on top of the dev unit.
    Alway use original RICOH toner and developer.

    Normally these models are very kind to you if their PM wishes is fulfilled

    how to clean magnetic roller?

  5. #15
    Service Manager 1,000+ Posts
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    Re: MP6500 fading to grey

    Quote Originally Posted by hsh6049 View Post
    how to clean magnetic roller?
    Thread is over 2years old, use wire brush or scoured pad.

  6. #16
    FORMER Techie 1,000+ Posts tcs04's Avatar
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    Re: MP6500 fading to grey

    Quote Originally Posted by davel View Post
    Thread is over 2years old, use wire brush or scoured pad.
    No! Don't!
    That Will just scratch the roller!
    Fold a sheet of paper into 8. Using the shortest edge, scrape it against the roller (if it's black!). Vacuum the roller to get rid of the debris. If you can find a doctor blade cleaning tool, clean the blade, dried toner will affect the gap.
    Check the bearing on the back of the drum shaft. You need low resistance between the shaft and the bias terminal. On old machines the resistance gets higher and affects the drum earth / bias relationship. This may seem ok when not running, but I've changed the bearing before for this kind of issue and cured the problem.

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