C552 - How reset black dev unit ???

[STACVB]

Hello,
can you tell me how reset the counter of the black developer ?
I changed the developer, always with the same message on the screen.

thanks (and sorry for my english)

[EarthKmTech]

drum and developer are not reset in service mode, they have new article detection devices which auto reset the life on installation.

If it genuinely is a new one you've installed, its defective and yes, I've had this before with both developing units and drums.

If a new dev unit is left in that does not reset, it will result in a TCR error code, guaranteed, so put the old one back in there.

[copier tech]

Did you replace the developer unit or just the developer powder!?

[allan]

You can chip that thing.

[copier tech]

Don't even need to chip it, you can turn off the warning in service mode.

[STACVB]

Did you replace the developer unit or just the developer powder!?

Developer unit only !

[M3HR4N]

Don't even need to chip it, you can turn off the warning in service mode.
I've got a problem like that. Is there really any way to turn off the unit life warnings in service mode?
I tried firmware the machine before but it did not work.

[copier tech]

Yes! Update the firmware then set softswitch 51 HEX to F0 & switch 55 to 0C
Also set NOSTOP in system2 page 2
This turns off all image unit, fuser & itb warnings, all you'll see is L- p codes.

[allan]

Don't even need to chip it, you can turn off the warning in service mode.

It needs to initialize the developer. You risk under or over toning the machine and the eventual C2557/8 error code.
There is also a chance that the bias value changes with aging.

Find the ICP and and replace it. Its a very small surface mount component and takes super skill to change.

[emujo]

All this info is well and good, but the guy replaced the developer for a reason...masking the end of life settings won't account for this kind of maintenance, these settings are to allow "run until failure"...when it fails it should be replaced with a new unit. Re-Chipping forces the MFP to believe the unit is new, which its not, and putting a new drum and or replacing developer affects CQ because the MFP still thinks there is X number of impressions on the part. I don't think this is true for a fuser section as we are not adjusting bias/charge settings based on number of pages through the unit. Just my 2 cents...Emujo

[STACVB]

Hello,
I changed the unit simply because the copier demanded a change of this unit !
thank you for your contribution, wait and see.