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  1. #1
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    C 308, black spots

    Hello ! The copier prints black spots and the black developer moves into the waste tank. We replaced Black Dev Unit , all Drum Units, Transfer Belt , all Power Supplies. We will be grateful for any advice. Thank.
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  2. #2
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    Re: C 308, black spots

    Replaced consumables OEM ?
    I would try to check/replace HV board and electric contacts from HV board to DR/DV.

  3. #3
    Copier Technician 1,000+ Posts
    C 308, black spots

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    Re: C 308, black spots

    Quote Originally Posted by pinspin View Post
    Hello ! The copier prints black spots and the black developer moves into the waste tank. We replaced Black Dev Unit , all Drum Units, Transfer Belt , all Power Supplies. We will be grateful for any advice. Thank.
    Was the drum and dev units oem complete units or refurbished also the picture showing is showing developer hasn't been emptied into the waste box
    Regards Mark

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  4. #4
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: C 308, black spots

    Hi pinspin, search for bizhub C224e developer depletion there are numerous threads here also you will find some attached bulletins. Very unfortunate situation though. There was found by one of the greatest KM techs here on C227 series factory damaged LED erase strips empty slowly developer units but on 8 series never heard of that. Anyway I wish you good luck. Will try dig deep when on PC and be more in help.
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

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  5. #5
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    Re: C 308, black spots

    Quote Originally Posted by mga View Post
    Was the drum and dev units oem complete units or refurbished also the picture showing is showing developer hasn't been emptied into the waste box
    all parts are original

  6. #6
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    Re: C 308, black spots

    Quote Originally Posted by Toxic View Post
    Replaced consumables OEM ?
    I would try to check/replace HV board and electric contacts from HV board to DR/DV.
    replaced

  7. #7
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    Re: C 308, black spots

    for me its fuser unit. taki it out and check

  8. #8
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    Re: C 308, black spots

    Quote Originally Posted by zoool View Post
    for me its fuser unit. taki it out and check
    How fuser can affect developer ejection to WTB?

  9. #9
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: C 308, black spots

    Check these.
    Attached Files Attached Files
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

    I don't reply to private messages from end users.

  10. #10
    Aging Tech 10,000+ Posts
    C 308, black spots

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    Re: C 308, black spots

    Quote Originally Posted by Toxic View Post
    How fuser can affect developer ejection to WTB?

    Is the black dev unit getting emptied into the WTB, or are you just finding developer in the WTB? These models auto replenish the dev units from the toner, so it isn't unusual to find developer in the WTB.

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