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  1. #1
    Trusted Tech 50+ Posts aligis's Avatar
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    Konicaminolta c451 print cyan boder on paper border

    HI EVERY ONE,,
    WE HAVE KM Bizhub c451 ,, well we have changed 3 IU CYAN BUTT continuously PRINT A CYAN BORDER ON A4 AND A3 SIZE PAPER (ANY GRAM).
    DO NOT NO WHAT IS THAT ANY IDEA ..
    THANKS

  2. #2
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    Konicaminolta c451 print cyan boder on paper border

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    Re: Konicaminolta c451 print cyan boder on paper border

    If you replaced the IUs and the cyan bar still appears on the paper, the next logical culprit usually is the laser unit.
    ' "But the salesman said . . ." The salesman's an asshole!'
    Mascan42

    'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

    Ibid

  3. #3
    Step aside, noob 1,000+ Posts EarthKmTech's Avatar
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    Re: Konicaminolta c451 print cyan boder on paper border

    Having read your post again, is the boarder a gritty cyan mark running one side of the page ?

    if so thats developer abrasion occuring to the cyan drum, one of the other IU's maybe failing and taking that one out with it..
    If at first you don't succeed, try the way I told you how to do it in the first place.

  4. #4
    Trusted Tech 50+ Posts aligis's Avatar
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    Re: Konicaminolta c451 print cyan boder on paper border

    Quote Originally Posted by PerthKMTECH View Post
    Having read your post again, is the boarder a gritty cyan mark running one side of the page ?

    if so thats developer abrasion occuring to the cyan drum, one of the other IU's maybe failing and taking that one out with it..
    yes exactely,,,, you are there...Ok according to you this is because of other IUs,, well i will try to change other IUs one by one and let you know...

  5. #5
    Trusted Tech 50+ Posts aligis's Avatar
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    Re: Konicaminolta c451 print cyan boder on paper border

    Quote Originally Posted by mrwho View Post
    If you replaced the IUs and the cyan bar still appears on the paper, the next logical culprit usually is the laser unit.
    no we only changed the cyan IU 3 times not all IU. any sugg... thanks

  6. #6
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    Konicaminolta c451 print cyan boder on paper border

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    Re: Konicaminolta c451 print cyan boder on paper border

    Quote Originally Posted by aligis View Post
    no we only changed the cyan IU 3 times not all IU. any sugg... thanks
    My bad. When I mentioned "IUs" I mean "the three Cyan IUs".
    ' "But the salesman said . . ." The salesman's an asshole!'
    Mascan42

    'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

    Ibid

  7. #7
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    Konicaminolta c451 print cyan boder on paper border

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    Re: Konicaminolta c451 print cyan boder on paper border

    I bet if you went and looked at the cyan TCR level when it starts to fail you would find it very low, I had a C451 that was eating Cyan IU's at an alarming rate due to toner starvation and the fix is............................ You get to take the back of the machine completely apart to get to the cyan/black toner drive motor where you will find a gear that has a flat spot in it so it turns when the shaft does except the flat part is now rounded out causing the aforementioned toner starvation problem. Have a big time!

  8. #8
    Step aside, noob 1,000+ Posts EarthKmTech's Avatar
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    Re: Konicaminolta c451 print cyan boder on paper border

    Quote Originally Posted by mitchl View Post
    I bet if you went and looked at the cyan TCR level when it starts to fail you would find it very low, I had a C451 that was eating Cyan IU's at an alarming rate due to toner starvation and the fix is............................ You get to take the back of the machine completely apart to get to the cyan/black toner drive motor where you will find a gear that has a flat spot in it so it turns when the shaft does except the flat part is now rounded out causing the aforementioned toner starvation problem. Have a big time!

    Interesting.

    and i bet the problem originates from customers not shaking their toner cartridges properly before installation
    If at first you don't succeed, try the way I told you how to do it in the first place.

  9. #9
    Senior Tech 250+ Posts
    Konicaminolta c451 print cyan boder on paper border

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    Re: Konicaminolta c451 print cyan boder on paper border

    Quote Originally Posted by PerthKMTECH View Post
    Interesting.

    and i bet the problem originates from customers not shaking their toner cartridges properly before installation
    You may be right, I'm in Florida and its hot and humid most of the year so that could be the culprit, I actually know of another C451 doing the same thing but its a machine serviced by someone else that asked for some help.... Not sure if they checked the gear or not but they keep buying IU's from me so one would think not.

  10. #10
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    Re: Konicaminolta c451 print cyan boder on paper border

    I had a similar problem, I changed dev unit, the laser unit and nothing helped. The problem was the cleaningblade on the Drum Unit. Screws are loose and I was receiving the proper framework in cyan on the paper.

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