Have one when copying the cyan is missing and the copy is gritty. took cyan DV out and it feels light and the mag roller had DV missing on some parts. i can understand no cyan on image but why is it gritty?
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Re: MX-2300N Missing cyan
As your service tech should know, the gritty is the developer itself. If you do not have a tech - you need to call one before you get in deep (read costly).
A wild guess is the developer was left in for too long. My limited exp has been once a developer unit starts spewing developer, nothing but troubles until the developer unit is replaced. BTW: When you do get the color developers, may as well put them all in and try to avoid the same issue in yellow and magenta. -
Re: MX-2300N Missing cyan
This problem is caused by a hard crusty toner buildup on the density sensor of the dev unit affected. The density sensor is gathering a toner density reading from the hard toner covering the sensor (which is obviously a false reading) and reports back to the PCU board that everything is OK and no need to activate the toner motor to add toner as is really needed.
The 'gritty' covering of the paper is developer transferring onto the page, and often results in the 'marbled' look of the pics attached. There is usually no need to replace the developer, just hit the base of the dev unit a few times quite hard with your screwdriver handle (loosens the hard toner on the bottom of the developing unit and breaks it all up), rotate the developing unit mag roller back & forth a few times to clear the doc blade, then reassemble. Immediately run 44-06. This will take a lot longer than usual to run as its adding a lot of toner back into the developer, as the sensor can now see that the toner density is seriously low.
Run 44-26 after that, then test 64-05 self test prints.
Should be like new again.
Samples.JPG
Attached pictures of before & after, showing SAME developer in use, just a clean of the density sensor and a few quick forced process control sequences. =^..^=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 =^..^=Comment
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Re: MX-2300N Missing cyan
The real cause of the hardening of the toner in the bottom of the developing unit is elevated internal temperatures inside the machine. To minimize future occurrences you'll want to maximize air flow.
If the machine is in a well ventilated area, I would remove any ozone filters to maximize airflow. Also make sure that all fans are clear of dirt, and installed blowing in the correct direction. =^..^=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 =^..^=Comment
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Re: MX-2300N Missing cyan
Dont remove the Ozone filters, they are there for a reason..Comment
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