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  1. #1
    Technician
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    Xerox 7545 knocking sound

    hi all...
    my 7545 started making this knocking noise, behind the B door, top right, towards the front of the machine.
    I can actually feel it vibrating when I put my hand on there...
    I see no obstructions, or anything wedged in there. I have a feeling it may be the belt slipping that's sitting in that area.
    Its one of those sounds where you know something is going to break soon... Any help & tips much appreciated!

    And here's a video... mostly for the sound.
    Dropbox - 2019-11-21 14.49.19.mp4 - Simplify your life

  2. #2
    Xerox Tech Veedle's Avatar
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    Re: Xerox 7545 knocking sound

    Hi.
    It is probably the waste toner overfilling and backing up into the waste auger etc.
    Good luck

  3. #3
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    Re: Xerox 7545 knocking sound

    Quote Originally Posted by Veedle View Post
    Hi.
    It is probably the waste toner overfilling and backing up into the waste auger etc.
    Good luck
    Thank you... No, that's not it. the waste toner container is only 1/3rd full and the rod is moving easily.
    The sound is coming from the feed side, I wasn't sure how to describe it properly.
    All the gears & parts there are moving freely & now the machine also started jamming more with heavy stock fed through the bypass.
    I'm thinking something is slipping on the feed side.

  4. #4
    Service Manager 5,000+ Posts
    Xerox 7545 knocking sound

    Phil B.'s Avatar
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    Re: Xerox 7545 knocking sound

    Quote Originally Posted by hrtl View Post
    Thank you... No, that's not it. the waste toner container is only 1/3rd full and the rod is moving easily.
    The sound is coming from the feed side, I wasn't sure how to describe it properly.
    All the gears & parts there are moving freely & now the machine also started jamming more with heavy stock fed through the bypass.
    I'm thinking something is slipping on the feed side.
    run the motor and solenoid test in SM to find out what motor / gear train is the issue.

  5. #5
    Technician howling's Avatar
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    Re: Xerox 7545 knocking sound

    check the by pass...remove it and inspect that carefully designed thin plastic that holds the roller which always break since its predecessor...

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