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  1. #1
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    Printing - Copying Problem with C350

    these are the problems now... the black imaging unit is brand new. i have problem with P-5 and P-21 but these are for Cyan. I have changed yellow iu chip. Any help? Original.pdf Print.pdf

  2. #2
    Aging Tech 10,000+ Posts
    Printing - Copying Problem with C350

    copier addict's Avatar
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    Re: Printing - Copying Problem with C350

    P-5 and P-21 have nothing directly to do with cyan. P-5 has to do with the front AIDC sensor. P-21 relates to an issue with a colour shift test pattern. So, you either have an AIDC sensor problem, or a transfer belt problem.
    Hope this helps

  3. #3
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    Re: Printing - Copying Problem with C350

    Thanks for your quick reply. I will take out the transfer belt and clean it. i think it has a problem with cleaning it, but i will check it more carefully. Do you think that this bad print to black,caused by this problem?

  4. #4
    Field Supervisor 500+ Posts
    Printing - Copying Problem with C350


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    Re: Printing - Copying Problem with C350

    Do the color units print similar output?
    If your problem is only with the black unit you may need to clean the LED array that writes onto your black drum. It can get filmy and produce a faint black image.

  5. #5
    Service Manager 1,000+ Posts
    Printing - Copying Problem with C350

    habik's Avatar
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    Re: Printing - Copying Problem with C350

    Do this procedure I wrote in this thread just a day ago!
    Next time do a thorough search through the forum!

    C450 Light copies on Black and color


    Sent from my iDon't believe in marketing device using Tapatalk
    .OK Google! ... will I need Berrocca this morning?
    Firmwares HERE

  6. #6
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    Re: Printing - Copying Problem with C350

    I have this pattern for the colors
    Attached Files Attached Files

  7. #7
    Service Manager 1,000+ Posts
    Printing - Copying Problem with C350

    habik's Avatar
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    Re: Printing - Copying Problem with C350

    You need to check up the cyan IU as that is whats missing. Either no supply of toner or the Cyan drum/dev unit is no good. Unfortunately you wont find out whether the Print head is good until you change the Cyan IU. Good luck.


    Sent from my iDon't believe in marketing device using Tapatalk
    .OK Google! ... will I need Berrocca this morning?
    Firmwares HERE

  8. #8
    Service Manager 1,000+ Posts
    Printing - Copying Problem with C350

    habik's Avatar
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    Re: Printing - Copying Problem with C350

    Try and give the cyan iu a good shake and turn the dev gear to give it a start rotation!


    Sent from my iDon't believe in marketing device using Tapatalk
    .OK Google! ... will I need Berrocca this morning?
    Firmwares HERE

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