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  1. #1
    Technician
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    Bizhub C451 - Noise

    Hello.
    Can someone give me some hint regarding noise problem on a C451.
    We have serch and search but we are not finding the source for where the noise come from.
    It didn`t come from fuser, duplex or exit section, changed.
    The noise come and go when the machine is running in stand by.
    Hope for any hint.

  2. #2
    FORMER Techie 1,000+ Posts tcs04's Avatar
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    Quote Originally Posted by ReoNeo View Post
    Hello.
    Can someone give me some hint regarding noise problem on a C451.
    We have serch and search but we are not finding the source for where the noise come from.
    It didn`t come from fuser, duplex or exit section, changed.
    The noise come and go when the machine is running in stand by.
    Hope for any hint.
    Can't quite hear it from here!

  3. #3
    Senior Tech 100+ Posts
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    There are tech bulletins regarding noises from this model. If you are referring to a squeking sound during standby and you have replaced the fuser then the next thing to do is clean/lube the fuser drive assy. One of the bulletins refers to this assy and I think it recommends installing a spacer.

  4. #4
    Field Supervisor 500+ Posts
    Bizhub C451 - Noise

    copytechman's Avatar
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    I've seen squeaks come from the idle plastic rollers attached to the right had fold down door, these rollers are also driven when the machine is idling.

    Regards!
    A.

  5. #5
    Field Supervisor 500+ Posts
    Bizhub C451 - Noise

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    Just get out the trusty WD40 can and look at the fuser drive area, notice the small black gear on a silver shaft....give the bushing that you can see where the shaft passes thro the machine frame a quick spray..and the squeeck will go!

    keep on listening

    silence is golden.

  6. #6
    Gimp 500+ Posts JSC's Avatar
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    Quote Originally Posted by copytechman View Post
    I've seen squeaks come from the idle plastic rollers attached to the right had fold down door, these rollers are also driven when the machine is idling.

    Regards!
    A.
    Yep....if its a high pich squeak it'll be from these idle rollers iv'e had about a dozen of these machines do it.

  7. #7
    Trusted Tech 50+ Posts HuronMan's Avatar
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    If you take the input gear off the Paper Exit Guide assembly(A00JR75500) that's mounted to the door, close the door and it goes away, it's the plastic bushings in the exit guide.

  8. #8
    Robbiebits
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    Cool KM C 451 Noise

    Chek the Ozone and Fuser fan motors, they seen to give trouble and noise

  9. #9
    Service Manager 1,000+ Posts
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    And a new one. Had the doc. feeder squeaking on one yesterday! LOL

  10. #10
    Field Supervisor 1,000+ Posts RRodgers's Avatar
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    Quote Originally Posted by copytechman View Post
    I've seen squeaks come from the idle plastic rollers attached to the right had fold down door, these rollers are also driven when the machine is idling.

    Regards!
    A.
    Yep, it's those! I've had it. What you can do is open the door and cheat the interlock. If the noise isn't there... it's those gears. If it is there, it's probably the fuser or fuser drive.
    Have fun and good luck.
    Color is not 4 times harder... it's 65,000 times harder. They call it "TECH MODE" for a reason. I have manual's and firmware for ya, course... you are going to have to earn it.

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