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  1. #1
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    konica minolta bh di250

    How do i calibrate the developer and reset the drum count after rebuilding it or does the fuse reset the drum. I also will need the service mode procedure to calibrate dev atdc. Thanks

  2. #2
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    konica minolta bh di250

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    Re: konica minolta bh di250

    With the fuse, both drum and developer counters are reset and the calibration procedure is initiated. No need for further action. Be sure to have a new drum and new developer powder, otherwise you are asking for print quality trouble. Ideally replace the mag roller collars too.

    Very doubtful if rebuilding the Image Unit is economically......

    Hans
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  3. #3
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    Re: konica minolta bh di250

    Quote Originally Posted by Hansoon View Post
    With the fuse, both drum and developer counters are reset and the calibration procedure is initiated. No need for further action. Be sure to have a new drum and new developer powder, otherwise you are asking for print quality trouble. Ideally replace the mag roller collars too.

    Very doubtful if rebuilding the Image Unit is economically......

    Hans
    Great thanks

  4. #4
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    konica minolta bh di250


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    Re: konica minolta bh di250

    As hans says best to replace at least the rear dev roller collar or drum will wear excessively on that end. New style collars are available with bearing in center.

  5. #5
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    Re: konica minolta bh di250

    Quote Originally Posted by T911 View Post
    How do i calibrate the developer and reset the drum count after rebuilding it or does the fuse reset the drum. I also will need the service mode procedure to calibrate dev atdc. Thanks
    For EP and Di series calibration is done by executing F8 IIRC. Fuse just reset drum counter.
    Use F8 only if developer is replaced.

  6. #6
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    konica minolta bh di250


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    Re: konica minolta bh di250

    Quote Originally Posted by REGSIS View Post
    For EP and Di series calibration is done by executing F8 IIRC. Fuse just reset drum counter.
    Use F8 only if developer is replaced.
    You might have models confused. On this DI series Drum message & dev calibration is done when fuse blows on new IU.

    F8 in tech rep mode is for factory use only (see attached)
    Attached Files Attached Files

  7. #7
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    Re: konica minolta bh di250

    Yep, this model uses IU. You're right.

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