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  1. #11
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: C 308, black spots

    Quote Originally Posted by copier addict View Post
    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.
    Good point but we all know the theory. If developer is on copies or WTB is extra heavyweighted or drum or/and belt is polished then what's next if not dev being pulled?

    It's so low level troubleshooting(user like) asking tech who replaced that many parts to check fuser or WTB...
    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.

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  2. #12
    Aging Tech 10,000+ Posts
    C 308, black spots

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    Re: C 308, black spots

    Quote Originally Posted by tsbservice View Post
    Good point but we all know the theory. If developer is on copies or WTB is extra heavyweighted or drum or/and belt is polished then what's next if not dev being pulled?

    It's so low level troubleshooting(user like) asking tech who replaced that many parts to check fuser or WTB...

    I was just trying to get a little more information from the OP. He never said the any of what you wrote above.
    If all those parts have been replaced with no results it is time to take a step back and start the troubleshooting process again. Just my opinion of course.

  3. #13
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: C 308, black spots

    Quote Originally Posted by copier addict View Post
    I was just trying to get a little more information from the OP. He never said the any of what you wrote above.
    If all those parts have been replaced with no results it is time to take a step back and start the troubleshooting process again. Just my opinion of course.
    For me your opinion is valuable here. Not there you know where. Just my opinion of course.
    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.

  4. #14
    Master Of The Obvious 10,000+ Posts
    C 308, black spots

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    Re: C 308, black spots

    I had a C368 that would suck all of the developer out of the cyan developing unit in about 20 seconds. Naturally, I was distressed when the very first image after the new developing unit was nearly void of cyan. Mine turned out to be an HVT issue. =^..^=
    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.
    5) You are the person onsite. Only you can make observations.

    blackcat: Master Of The Obvious =^..^=

  5. #15
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    Re: C 308, black spots

    Quote Originally Posted by copier addict View Post
    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.
    the black dev unit getting emptied into the WTB

  6. #16
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    Re: C 308, black spots

    Аt the end it was MFPB, thanks for the help

  7. #17
    Service Manager 5,000+ Posts
    C 308, black spots

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    Re: C 308, black spots

    Quote Originally Posted by pinspin View Post
    Аt the end it was MFPB, thanks for the help

    MFPB caused the K dev to empty into the waste?

    That's a first for me.


    Let us eat, drink, and be merry, because tomorrow we may die!

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  8. #18
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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.
    Hi, did you missed the transfer roller replacement?

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