How much is the distance between the magnetic developer roller and the OPC?
There is a magenta IU which always consumes the developer powder in a few hundreds of prints. I suspect the above distance.
I know that most of you would replace the IU. But I'm living in a country with lower mean income, so to rebuild some consumables (iu, drum, fuser) is more frequent case.
It's usually a primary charge issue that causes the developer to pull. I have to assume that you have a source for developer/starter. Do you have a source for primary charge wires and grids also? =^..^=
If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=
To say the truth, I didn't think the primary charge as the part causing the problem.
The technician told me also about the primary charge. I'm not a technician. You confirmed this. I haven't face this problem before. Thank you for this information.
I see there aren't new compatible charge grids or the whole primary charge as parts. There are sold used ones. There are new compatible ones only for newer models.
Btw, do you know the distance between developer roller and OPC? I should adjust this distance too.
Since these image units are sold as an assembly, the manual does not go into detail about internal adjustments. =^..^=
If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=
try rebuilding drum unit with new grid & sawtooth. put new developer in and should help. Personally I've had good experience with rebuilding drum units but not developer. developer always dumped.
I changed the developer. It ate the developer three times.
Last edited by yianni; 07-09-2018 at 09:51 AM.
It's eating developer because drum and/or grid & sawtooth are over life and shorting out.
You can try to exchange Magenta Unit with another, say Yellow unit (Drum unit parts only, one by one)Originally Posted by yianni
This will confirm & isolate the problem either Drum size OR Charge Unit. I don't think you can modify the gap between drum & mag roll. Maximum you can adjust is Trim Bar which controls amount of developer on Mag Roll, reduce the gap so less developer on mag roll.
This will affect CQ, magenta density will be less, so instead try to isolate the problem first.
Hope this helps
The imaging unit has two screws (at the two sides) that adjust the distance between the developer section and the drum section.
Someone can put a cardboard between the developer roller and the OPC and measure this distance. I don't have another imaging unit for measuring this distance. For example, I put a 150g paper and I adjusted the distance. I think it is low, may it needs a 500g cardboard or a 1mm filler.
C452 color units are single units. Drum and developer sections together.
If you want to check distance measure the gap on your yellow or cyan units and compare.
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