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  1. #1
    Junior Member dion's Avatar
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    bizhub c6500 fault code 4720

    Hi everyone,i am having a trouble code 4720 to a c6500 konica minolta. I'll try to replace the cyan writing unit.
    Do you experiance to this or any familiar fault???????
    Thanks for your time!!!!!!

  2. #2
    Senior Tech 250+ Posts Mick01's Avatar
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    Re: bizhub c6500 fault code 4720

    Hi,
    It is more than likely to be the Cyan write unit. Just to be sure I would swap the Cyan and Magenta write units around and see if the fault code changes. If it does then the write unit is faulty. If it doesn't then I would suspect the image processing board or the write unit wiring loom.
    hope this helps.

  3. #3
    Technician Zoran's Avatar
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    Re: bizhub c6500 fault code 4720

    Repair laser drive board.
    Replace the laser diode using a laser unit of c 250 c 252
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