C454e cyan developer

[vedder]

Re: C454e cyan developer

First advice is never ask Kon/Min for tech support. They will always tell you it's a bad board when 99% of the time it's not! When you call them they pull up the same knowledge base that you can do if you are a dealer. Only difference is they start at the bottom of the troubleshooting chart blaming a bad board.

Anyway about your problem, using "genuine" toner? New transfer belt? Since high milage machines it could be many things but you have covered most of them. Sounds like you are a Kon/Min dealer if you were able to call/access the knowledge base, if so search for C454 dev units. There are several bulletins addressing this.
Would also look closely at and replace the HV wiring, one of the bulletins addresses this.

Hi Copyman,

Yeah I only went thorough Konica as a matter of procedure, wasn`t convinced myself, but as this wasn`t the first time they had had this issue, I had to get Konica involved. I have trawled through all the threads/ bulletins regarding this issue and there doesn`t seem to be a definate solution, what seems to fix it for 1 person doesn`t for someone else, I have pretty much done all the things suggested regarding toner filtration, tcr level adjustments, hv wiring and what not.

The customer is using genuine toner, all units are within life, my only thought is now the belt, just because it`s within life doesn`t mean it`s perfect, looks ok, slight wear, is it enough to cause the problem? who knows, without throwing ANOTHER cyan dev unit and belt at it, we wont know.

It wouldnt be so bad if you could just get a bag of dev, pour in, fit some other bits and try again, but the price of a new dev unit everytime is ridiculous.

[kenpio]

Re: C454e cyan developer

Thanks for all the responses. Just some input here. The drums and transfer belt and roller are way under the usage. Gas gauge is at about half to three quarters on all. There are no C-codes, just in the service mode I get the oil can that has a P-21, color alignment. I have had an 8 series, turn it on and it emptied the developer. These are over a month or two. I have returned the developers to KM under their YYP program, well the Cyan DV units are back ordered. I guess this might mean there may be a problem with these? Don't know?

Thanks
KEN

[vedder]

Re: C454e cyan developer

Thanks for all the responses. Just some input here. The drums and transfer belt and roller are way under the usage. Gas gauge is at about half to three quarters on all. There are no C-codes, just in the service mode I get the oil can that has a P-21, color alignment. I have had an 8 series, turn it on and it emptied the developer. These are over a month or two. I have returned the developers to KM under their YYP program, well the Cyan DV units are back ordered. I guess this might mean there may be a problem with these? Don't know?

Thanks
KEN

There is definately a problem, its not a new thing, check out this thread it was started in 2014. Some people seem to have it more than others, like I say I`ve only come across it twice, 1st customer decieded to scrap it and get a new machine, the second customer is contemplating the same, so i`ve never come to a definate fix.

C224e/C284e/C364e/C454e/C545e cyan dev unit problems

[tsbservice]

Re: C454e cyan developer

In that case I would go for:
A161R70211 HV Contact Assy - 1 for affected color or 4 for all colors
A161R70322 DV Contact Assy
Those are so cheap especially compared to ridiculous price of color Developer units plus visual inspection will not always show clear signs of arcing or bad contacts.

[vedder]

Re: C454e cyan developer

In that case I would go for:
A161R70211 HV Contact Assy - 1 for affected color or 4 for all colors
A161R70322 DV Contact Assy
Those are so cheap especially compared to ridiculous price of color Developer units plus visual inspection will not always show clear signs of arcing or bad contacts.

Hi tsbservice,

here is a list of what I replaced,

A5C1M40600 - high voltage board
A161R70322 - dv contact assy
A161R70211 - hv contact ass X4
A161N12P01 - charging wire k
A161N12N01 - charging wire c
A161N12M01 - charging wire m
A161N12K01 - charging wire y
Dv - 512c - cyan dev unit

We are obviously thinking along the same lines since you recommended what I actually fit, unfortunatly it didn`t work.

While I had the machine apart, everything was cleaned out (toner filter systems, filters) and visually checked over.

[copyman]

Re: C454e cyan developer

Hi Copyman,


It wouldnt be so bad if you could just get a bag of dev, pour in, fit some other bits and try again, but the price of a new dev unit everytime is ridiculous.

Use new black developer units for colors. Just swap chips. Run 60 11x17 halftones of the color dev unit you are replacing, around 40 pages you will see the black changing to the color. After around 60 pages black will have changed to the color!

Also I've brought back many dev units that have crashed by adding developer from another bad unit until I get the proper TCR reading. Of course did this after replacing any overlife consumables that caused the dev crash in first place.

There is NO way I'm paying Kon/Min $500+ for a color dev unit !!! I'll buy an off lease working C224 for around $500 and get 4 dev units plus other parts before paying kon/min that kind of money !!!!

[kingarthur]

Re: C454e cyan developer

have had a few cyan developer units sort themselves out, really weird, had the white marks across the page, took them out examined them, virtually nothing on the roller, couldn't go back for a week on one, when I went back with the new dev unit, thought I'd check the quality...it had recovered itself.....it's happened a few times, not only on cyan too

[copyman]

Re: C454e cyan developer

have had a few cyan developer units sort themselves out, really weird, had the white marks across the page, took them out examined them, virtually nothing on the roller, couldn't go back for a week on one, when I went back with the new dev unit, thought I'd check the quality...it had recovered itself.....it's happened a few times, not only on cyan too

Yes the good thing with those dev units is they can recover "sometimes" because toner btl has new developer mixed in. Constant fresh developer is what keeps quality the same as the consumables age.

[kenpio]

Re: C454e cyan developer

Okay folks,
Went to the customer on Monday of this week and changed the cyan developer, because it was gone. So I ordered the HV board and the toner subhopper and said that I would be back. I got there yesterday, 4 days later and the cyan developer was gone! I did change them both, but did not have the developer, it was the end of the day and did not go to the office to get one. The black drum and transfer belt are due to be changed. We are out of drums, as KM is having troubles keeping up with these things. I will give KM a call first thing on Monday to see what they say. Thanks for listening.

KEN

[Rohullah]

Re: C454e cyan developer

Howdy Folks,

I have a couple of these C454e machines that are eating cyan developer units. One machine just yesterday has only 9000 copies on the unit. I replaced the drum and developer previous to this change. I just sent them back to KM for their YPP. When I take out the unit there is not a brush on the mag roller, seems to be all gone? The waste toner box is a little heavy, so I think that it is going in there. The one machine that I was just at yesterday has over 1 million on it and the other one has not quite a million. One has G00-K2 and the other has G20-M1. Just throwing that out there, because the cyan developers are always backordered.

Thanks
KEN

Try to charge dv unit with toner manually few times, i had this problem with 6500km. I had charged many times toner inside the dv, after that problem solved.

[copier tech]

Re: C454e cyan developer

There is a new solution for this issue, blocked air flow see attached.

After you have replaced ALL image & developer units & the transfer unit if are over life vac out the suction area.


Premature Developer Unit Failure - Image Unit Failure V2.pdf

[blackcat4866]

Re: C454e cyan developer

There is a new solution for this issue, blocked air flow see attached.

After you have replaced ALL image & developer units & the transfer unit if are over life vac out the suction area.


[ATTACH]44129[/ATTACH]

Wow! That looks like 3 hours of fun (and toner to the elbows). =^..^=

[copyman]

Re: C454e cyan developer

FYI, you can have a bad drum even if consumable is not showing 0% life left. Now that these machines are 5+ yeras old so are the drums, etc. So on super low volume machines the drums can go bad, even if they were hardly used. Age takes a toll on drums, dev units, etc.
I'm a firm believer 40+ ppm machines consumables will yield many more pages if ran heavy, sometimes lasting 3 x's longer, where as the low volume machines when not run the way designed the consumables crap out early. High volume machines need to be run or you will have more service calls then normal. Just my experience over the years.

[kenpio]

Re: C454e cyan developer

Just an update for this call. The black drum and the transfer belt were at 0%. So I replaced them and cleaned out the cyan air duct and that was a couple weeks ago. Called the customer and it is going okay. Did open a request with KM and I got a document that I will enclose that helped a little.

Thanks
KEN
Cyan Magenta Dev loss.pdf

[copier tech]

Re: C454e cyan developer

Wow! That looks like 3 hours of fun (and toner to the elbows). =^..^=

Don't need to take the the drive off just IU's, Devs & transfer out can then gain access to vac out.