Kyoshiba 650c C4B1 error

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  • KyoCaptive
    • May 2025

    #1

    [Error Code] Kyoshiba 650c C4B1 error

    We have a Kyoshiba 650c that is throwing a C4B1 error. This occured after a PM was performed and initially said "Set Fuser". The manual states that a C4B1 is "Fuser unit voltage judgment abnormality" which is not enough information to help. At boot up the welcome screen appears and shortly after the error occurs. Has anyone ever seen this problem and be able to shed light where only darkness seems to be? The Kyocera hotline was not able to help us at all and frustration is mounting, any insight is greatly appreciated. If this is helpful, the fuser was completely PM'd along with the drive system. Firmware is up to date and current.
  • Zackuth
    Trusted Tech

    250+ Posts
    • Aug 2009
    • 448

    #2
    Re: Kyoshiba 650c C4B1 error

    If I'm not mistaken, I did have this error with our 550, it ended up that the fuser drive motor wasn't turning--dead. Replacing the motor did the trick.
    If at first you don't succeed, redefine success

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    • KyoCaptive

      #3
      Re: Kyoshiba 650c C4B1 error

      Thanks for the input. I'll check this out.

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