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  1. #1
    Technician muhammadreza's Avatar
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    Magenta background

    I change magenta drum developer and charger. When make few copy print are ok but when make many copy it will come like this ! Why it happen ? Machine model TASKalfa 5551ci
    Attached Images Attached Images

  2. #2
    Master Of The Obvious 10,000+ Posts
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    Re: Magenta background

    You left out two crucial pieces of information:

    What size is the image in the photo?
    What direction is the feed direction? (Are those bars crossfeed?)

    If I knew the answers to the first two questions I would already know the answer to the third question: What interval in millimeters between the bars?

    I'm going to make a guess that the interval is 21mm on an A4 image LEF, bars crossfeed. True?
    =^..^=
    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 =^..^=

  3. #3
    Technician muhammadreza's Avatar
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    Re: Magenta background

    Quote Originally Posted by blackcat4866 View Post
    You left out two crucial pieces of information:

    What size is the image in the photo?
    What direction is the feed direction? (Are those bars crossfeed?)

    If I knew the answers to the first two questions I would already know the answer to the third question: What interval in millimeters between the bars?

    I'm going to make a guess that the interval is 21mm on an A4 image LEF, bars crossfeed. True?
    =^..^=
    A4 pdf file and direction off paper are A4
    And thanks to replay I already solved the issue

  4. #4
    Service Manager 5,000+ Posts
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    copier tech's Avatar
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    Re: Magenta background

    Quote Originally Posted by muhammadreza View Post
    I change magenta drum developer and charger. When make few copy print are ok but when make many copy it will come like this ! Why it happen ? Machine model TASKalfa 5551ci


    Looks like those marks are caused for the transfer belt.

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

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  5. #5
    Service Manager 1,000+ Posts
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    Re: Magenta background

    Quote Originally Posted by muhammadreza View Post
    A4 pdf file and direction off paper are A4
    And thanks to replay I already solved the issue
    So what was the fix?

  6. #6
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    Phil B.'s Avatar
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    Re: Magenta background

    Quote Originally Posted by muhammadreza View Post
    A4 pdf file and direction off paper are A4
    And thanks to replay I already solved the issue
    mind sharing with the class what the fix was?

  7. #7
    Senior Tech 100+ Posts
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    M94's Avatar
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    Re: Magenta background

    Quote Originally Posted by muhammadreza View Post
    A4 pdf file and direction off paper are A4
    And thanks to replay I already solved the issue
    Hey I'm essentially brand new to these forums and really just surfing around trying to learn from other peoples issues\solutions. Would really appreciate it if you could post the solution otherwise this post doesn't really help anyone having the issue in the future.

  8. #8
    Technician muhammadreza's Avatar
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    Re: Magenta background

    Quote Originally Posted by davel View Post
    So what was the fix?
    U100 (adjust main high voltage output) Adj Ac bise (Ac bise [M])
    and set AC Auto Adj off

  9. #9
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    Re: Magenta background

    Set AC Auto Adj. set to "off" ?
    Bad idea, you`ll get other density problem in near future.
    Not only [M], also [C,Y,K] possible.
    Now system won`t calculate needed correct voltages anymore.
    You will have no fun with this setting.

  10. #10
    Trusted Tech 50+ Posts
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    Re: Magenta background

    Quote Originally Posted by muhammadreza View Post
    U100 (adjust main high voltage output) Adj Ac bise (Ac bise [M])
    and set AC Auto Adj off
    this is the fault you can sometimes get when a drum is replaced without turning off the machine, the serial number and counter won't get cleared and there will be background unless ac auto adj is off

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