konica minolta bh di250

[T911]

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

[Hansoon]

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

[T911]

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

Great thanks

[copyman]

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.

[REGSIS]

Re: 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

For EP and Di series calibration is done by executing F8 IIRC. Fuse just reset drum counter.
Use F8 only if developer is replaced.

[copyman]

Re: konica minolta bh di250

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)

[REGSIS]

Re: konica minolta bh di250

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