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nullskull
08-11-2023, 02:46 AM
How often should a developer unit be replaced for a Konica Minolta 1250p? :confused:

blackcat4866
08-11-2023, 03:09 AM
1,000,000 prints. =^..^=

nullskull
08-11-2023, 05:07 PM
Thanks! Just to make sure you mean the actual unit right? Not the powder?

blackcat4866
08-11-2023, 11:02 PM
Yes, the powder. The upper developing seal will begin to curl at 6M. The developing unit is rated for 8M, and often gets 10M. =^..^=

tulintron
08-11-2023, 11:16 PM
I agree in parts. We always recommend customers to follow the manufacturer.


However, one of our contracts has already reached 12M without changing the Developing Unit

Press 2250

nullskull
08-12-2023, 12:24 AM
Yes, the powder. The upper developing seal will begin to curl at 6M. The developing unit is rated for 8M, and often gets 10M. =^..^=

Ok that makes sense, thanks. My specific machine is at 8.6M. The current dev unit doesn't seem broken but I'm not sure what to look for exactly. What is generally the thing in the unit to break first? I'm starting to think the issue is more of an electrical one.

blackcat4866
08-12-2023, 12:47 AM
You'll start to see jitter-bars crossfeed, as the developing bearings go bad. Also take care not to turn the developing roller in the wrong direction. If you manage to flip the sheet below the mag roller, it is extraordinarily difficult to get it flipped back. =^..^=

nullskull
08-12-2023, 01:31 AM
You'll start to see jitter-bars crossfeed, as the developing bearings go bad. Also take care not to turn the developing roller in the wrong direction. If you manage to flip the sheet below the mag roller, it is extraordinarily difficult to get it flipped back. =^..^=
Yes I did that but thankfully someone stopped me before it flipped I think. Broadening my issue with the 1250p right now I'm getting some developer leakage into the machine. Could it be some overvoltage? The 2412 error code came on when it started. (I did a dev reset in service menu so that's gone) Or could those dev seals you mentioned be the issue?

blackcat4866
08-12-2023, 03:33 AM
C-2412 is the toner sensor, so I'd say you're justified in ordering up the developing unit and developer (especially at 8.6M). =^..^=

Markks
08-12-2023, 03:37 AM
As far as life of the developer powder it really depends on what media/ coverage the customer is running. We have a print shop that runs a lot of color pre-printed heaver stock media. They have very little coverage so sometimes we are only getting 60-80% of life. When you start having toner build up on the small roller in front of the mag roller you know its time to replace the developer. If you have a 2250 ( two 125's hooked together) and the customers runs a lot of one sided prints then engine ones developer will start misting because its just being agitated with no toner leaving. This is because engine two prints first side and engine one prints second side

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