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

[Don N.]

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

Sorry to bring up an old thread but thought I would ask.... Can I use the black developer unit in the colour slots in the c458 like you can in the c224e?

Thanks

We've looked at the DV619k and DV512k side by side. Of course you would change the color rail, but they look like the end block just needs to be cut/shaved off to fit.
NOIW IT GETS INTERESTING. Depending on your knowledge of the CMY 8 series front drum end cap vs K end cap, you notice the front dv bearing difference in cmy vs k. Our theory is if you install a K dv, you could install a k drum, with no modification to the k drum front end cap. We've yet to test it, but if you don't know about the cmy front drum end caps, you need to... Improper spacing can get you weak solids with too much gap and much worse, pull dv off the mag rollers with too little gap toward the front side. No time today to get more specific, just wanted to put that warning out there in case someone says sure go ahead! Look deeper!

One other answer might be, yes, you could pour in/exchange the k developer/carrier itself into a used unit if that unit is in good shape. Say if it lost some dv., or was contaminated...
This conversation needs it's own thread... IDK how to point people from here to there.

[jonbonse]

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

We've looked at the DV619k and DV512k side by side. Of course you would change the color rail, but they look like the end block just needs to be cut/shaved off to fit.
NOIW IT GETS INTERESTING. Depending on your knowledge of the CMY 8 series front drum end cap vs K end cap, you notice the front dv bearing difference in cmy vs k. Our theory is if you install a K dv, you could install a k drum, with no modification to the k drum front end cap. We've yet to test it, but if you don't know about the cmy front drum end caps, you need to... Improper spacing can get you weak solids with too much gap and much worse, pull dv off the mag rollers with too little gap toward the front side. No time today to get more specific, just wanted to put that warning out there in case someone says sure go ahead! Look deeper!

One other answer might be, yes, you could pour in/exchange the k developer/carrier itself into a used unit if that unit is in good shape. Say if it lost some dv., or was contaminated...
This conversation needs it's own thread... IDK how to point people from here to there.

Thank you

My idea was to use the DV619K dev in all colour slots in the 8 series like we do with the 4 series.....rather than using DV512k devs in the 8 series......then run full bleed to deplete the black toner so it pulls in which ever colour slot it is in....

[Gift]

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

We've looked at the DV619k and DV512k side by side. Of course you would change the color rail, but they look like the end block just needs to be cut/shaved off to fit.
NOIW IT GETS INTERESTING. Depending on your knowledge of the CMY 8 series front drum end cap vs K end cap, you notice the front dv bearing difference in cmy vs k. Our theory is if you install a K dv, you could install a k drum, with no modification to the k drum front end cap. We've yet to test it, but if you don't know about the cmy front drum end caps, you need to... Improper spacing can get you weak solids with too much gap and much worse, pull dv off the mag rollers with too little gap toward the front side. No time today to get more specific, just wanted to put that warning out there in case someone says sure go ahead! Look deeper!

One other answer might be, yes, you could pour in/exchange the k developer/carrier itself into a used unit if that unit is in good shape. Say if it lost some dv., or was contaminated...
This conversation needs it's own thread... IDK how to point people from here to there.

That's real real brainstorming here, I'm gonna try and have a look the next time we do refurb a Cxx8

[tsbservice]

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

We've looked at the DV619k and DV512k side by side. Of course you would change the color rail, but they look like the end block just needs to be cut/shaved off to fit.
NOIW IT GETS INTERESTING. Depending on your knowledge of the CMY 8 series front drum end cap vs K end cap, you notice the front dv bearing difference in cmy vs k. Our theory is if you install a K dv, you could install a k drum, with no modification to the k drum front end cap. We've yet to test it, but if you don't know about the cmy front drum end caps, you need to... Improper spacing can get you weak solids with too much gap and much worse, pull dv off the mag rollers with too little gap toward the front side. No time today to get more specific, just wanted to put that warning out there in case someone says sure go ahead! Look deeper!

One other answer might be, yes, you could pour in/exchange the k developer/carrier itself into a used unit if that unit is in good shape. Say if it lost some dv., or was contaminated...
This conversation needs it's own thread... IDK how to point people from here to there.

This is very good theory, thanks for the tip.

[REGSIS]

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

..........
NOIW IT GETS INTERESTING. Depending on your knowledge of the CMY 8 series front drum end cap vs K end cap, you notice the front dv bearing difference in cmy vs k. Our theory is if you install a K dv, you could install a k drum, with no modification to the k drum front end cap.
..........

That is a very logical theory considering:
* DV-K and DR-K phisicaly fit instead color ones, and
* HV contactas are in the same position for black and color DV & DR.

Worth a try!

[aparsons]

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

I have a Bizhub C220 and it has been good as gold for years. It is now producing prints like this. It gives a C2553 error. I think this is the same problem as the cyan but with magenta. I have reseated and cleaned what I can (toner, drums and developers) and cleaned the transfer belt. It is still doing it. I think I can use the machine for producing acceptable black and white but would like to to solve this.

TP-A4.jpg

My TCR levels are about 6.25% so it is unlikely to be that. I just seems to be throwing cyan toner liberally about the works - apart from where it should.
I can read all 20 pages of this thread but if possible I would like to skip to the last page and find out whodunnit. What is the answer? The machine is not worth enough to replace parts - although when it works it produces very good colour images.

Great forum, thaks for the help.

[tsbservice]

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

I have a Bizhub C220 and it has been good as gold for years. It is now producing prints like this. It gives a C2553 error. I think this is the same problem as the cyan but with magenta. I have reseated and cleaned what I can (toner, drums and developers) and cleaned the transfer belt. It is still doing it. I think I can use the machine for producing acceptable black and white but would like to to solve this.

[ATTACH=CONFIG]57971[/ATTACH]

My TCR levels are about 6.25% so it is unlikely to be that. I just seems to be throwing cyan toner liberally about the works - apart from where it should.
I can read all 20 pages of this thread but if possible I would like to skip to the last page and find out whodunnit. What is the answer? The machine is not worth enough to replace parts - although when it works it produces very good colour images.

Great forum, thaks for the help.

C2553 Abnormally low toner density detected magenta TCR sensor. Are you sure your magenta TCR is normal?
Swap two color drums and see the results.

[Don N.]

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

aparsons-
The C220 does not overflow excess cmy dv to the waste tank. only the K dv does. So yes you can refill it with a bag of dv, and yes it could be any color (or black) but be careful not to overfill it. You will get right readings for tcr level with any color used, but you will have to "skyshot" (run heavy solids) for about 30~50 pages or more to replace any other color toner if you don't use Magenta dv. The candy cane or checkerboard design is the clue. The mag roller is not covered with dv.

BTW, those dv's barely last 60~80k so not knowing the color meter or age of the color dv's, that may be the reason, or the drums are old. DO NOT RE-CHIP THOSE DRUMS!

[aparsons]

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

Many thanks for the help - I noticed that the magenta developer roller was stripey when I took the machine apart. I gave it a shake and turned it so the developer was uniform again. However when I put the machine back together the problem re-emerged.

I will see about replacing or refilling the magenta developer.

Great to have the benefit of so much expertise and experience.

[aparsons]

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

Many thanks for the help - I noticed that the magenta developer roller was stripey when I took the machine apart.&nbsp; I gave it a shake and turned it so the developer was uniform again.&nbsp; However when I put the machine back together the problem re-emerged.<br><br>I will see about replacing or refilling the magenta developer.<br><br>Great to have the benefit of so much expertise and experience.

[allan]

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

The magenta dev that is gone is only a symptom of the problem. What happens if you put the magenta drum into the cyan position?

[Don N.]

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

The magenta dev that is gone is only a symptom of the problem. What happens if you put the magenta drum into the cyan position?

If the M seal leaks and dusted the M drum charge grid, charge concentrated and dv was pulled out. The M drum will now pull dv anywhere you put it until the grid is cleaned. It won't happen immediately, but Allen is right, it's just a symptom. If the M drum is old, OR if the M dv is old/damaged, they need replaced. He needs to check consumable life remaining & put no more faith in the drums than the life remaining, if that. At this point, all 4 dv unit seals should be replaced. At about $4/seal, that's a no brainer.

[Hansoon]

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

At this point, all 4 dv unit seals should be replaced. At about $4/seal, that's a no brainer.

About which seals you are talking, Don?

Hans

[Don N.]

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

About which seals you are talking, Don?

Hans

Copylite part# SEAL368
It was previously just a polyurethane seal, difficult to mount straight, sold 1pc. @ $4 US.
Now a 10 pack for $40 US. Greatly improved. Now has a stiff mylar strip plus the poly seal, plus front & rear mylar end seals. BEAUTIFUL FIX FOR THESE OLDER 4e series dv units that leak toner dust on to the charge grid. The 8 series will be needing them soon.

[allan]

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

Life must be good if you get to finish those seals.