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  1. #1
    Senior Tech 100+ Posts
    Bizhub c452 switches off when warming up.

    AhmedChamumi's Avatar
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    Bizhub c452 switches off when warming up.

    Hi everyone out there,

    I have encountered bizhub c452 which boots up fine but immediately before it starts warming up the machine switches off on its own, i have tried different power outlet since i thought it might have been the low voltage issue but nothing seems to work, i also removed and re seat the fuser unit up to no avail.

    Please help me out as to where to start my troubleshooting.

    Best of regards,

    Ahmed Chamumi.

  2. #2
    Aging Tech 10,000+ Posts
    Bizhub c452 switches off when warming up.

    copier addict's Avatar
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    Re: Bizhub c452 switches off when warming up.

    Quote Originally Posted by AhmedChamumi View Post
    Hi everyone out there,

    I have encountered bizhub c452 which boots up fine but immediately before it starts warming up the machine switches off on its own, i have tried different power outlet since i thought it might have been the low voltage issue but nothing seems to work, i also removed and re seat the fuser unit up to no avail.

    Please help me out as to where to start my troubleshooting.

    Best of regards,

    Ahmed Chamumi.
    Does it actually switch off, or reboot?
    If it switches off it is likely a short somewhere. Try a known good fuser and see if it does the same.

  3. #3
    Senior Tech 100+ Posts
    Bizhub c452 switches off when warming up.

    AhmedChamumi's Avatar
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    Re: Bizhub c452 switches off when warming up.

    Quote Originally Posted by copier addict View Post
    Does it actually switch off, or reboot?
    If it switches off it is likely a short somewhere. Try a known good fuser and see if it does the same.
    It just switches off completely, i will have to find another known good fuser and check it out..thank you so much.

    Best of regards,

    Ahmed.

  4. #4
    Service Manager 5,000+ Posts
    Bizhub c452 switches off when warming up.

    copier tech's Avatar
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    Re: Bizhub c452 switches off when warming up.

    Also try booting up with the right door open, does it get to the "close right door" message?
    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
    Step aside, noob 1,000+ Posts EarthKmTech's Avatar
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    Re: Bizhub c452 switches off when warming up.

    few things I've experienced,

    I've had recently the soaking roller lamp wiring chafed and shorted to ground on a brand new fusing unit (quality control measures have been put in place for this issue) When this happens the RCD / GFI on that power circuit will trip though (if fitted) or just blow the fuse, hopefully, so no one gets electrocuted. My machine wasn't grounded, due to a defective power strip and there was no safety device so I got a nasty surprise. Now I know why KM forbids the use of power strips, there are other reasons too such as refrigerators and other AC inductive loads sharing the strip causing havoc every time they cycle.

    I've also seen DC wiring rub on and short to ground on the fuser drive motor.

    The power supply itself can become unreliable on these machines too.

    Also, make sure the power cable is firmly plugged into the back of the machine too, this is common as hell and been the cause of many wasted journeys.

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