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Thread: konica minolta bizup 250 "C2557"

  1. #1

    please any help with probleme
    what does mean and how can i reset this code
    thanks in advance

  2. #2
    Senior Member
    Join Date
    Nov 2004
    Savannah,GA USA
    You have a bad ATDC sensor or bad toner. The sensor is detecting less then 7% toner ratio in the developer. You can try spiking the developer or replacing it in accordance with the manual. If you do need the manual I can e-mail it to you for free.

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