Print Quality Taskalfa 3050CI

[syspro]

Hi,

we have a problem with a TaskAlfa 3050ci, when we print or copy a page there are small black dots all over the page (see PDF).

We refreshed the drum kit and the developer kit an did the laser cleaning.

The fuser unit (teh two red rolls) seems to be clean as well.

The black Toner is new and an Original from Kyocera.

TaskAlfa3050CI.pdf

Any ideas ?

Tobias

[dickierock]

Re: Print Quality Taskalfa 3050CI

looks like your black drum is done. u89 printouts will confirm.

[blackcat4866]

Re: Print Quality Taskalfa 3050CI

Yes, your black drum has been arcing. You might as well do the maintenance A kit as long as you're this close to 300K. =^..^=

[syspro]

Re: Print Quality Taskalfa 3050CI

Thanks for your replys, how can i get a printout for u89 ?

I am in Serice Mode and could select under u89 for example K grey ... or sample.

How could i start the test print ?

Sorry for my simple question :-)

What is the part number for the black drum ?

[Kyo fan]

Re: Print Quality Taskalfa 3050CI

When you select what you want to print in U089, press System menu key and than hit Start. Pressing System menu again will bring you back so you can exit maintenance mode properly, or print something else.

It's the same drum DK-8505 (302LC93012) for all 4 colors. Those drum units (and developer units) are made to last for 600k printouts unless you get something like those dots where you must replace it.

[Samanator]

Re: Print Quality Taskalfa 3050CI

Yes all the drums on those model (CS 3050ci,3550ci,4550ci,5550ci) are the same. One thing I would do in that situation is simply swap the yellow drum with the black drum. If you get yellow dots all over the page, you're done. Swap them back and get a drum for the black.

I always take the time to clean off all the drum & developer units because I have it open. Any time I pull off that gray unit holding the waste toner bottle I pull out the all the drum/developer units and clean them off. If your pulling out one drum/developer unit you have to remove the fuser and at least pull out part way the transfer unit. No better time to do some cleaning and these machine always need it. A clean machine always runs better. Heck, most of our job is just cleaning, so get out the vac and get it done.

I also pull all the charger rollers from each color and inspect them. If they have white build up on them, clean it off. ONLY use water on a rag to clean them. Anything else may damage the surface of those rollers. I usually do the charger rollers first as it gives them time to dry before reassembly.

And here's another freebie; sometimes those charger rollers get bubbles on the surface that look like dots of that color on the page. If I don't have a roller to replace it, I will usually swap it with the one in the yellow unit. It will show up a lot less until I can get back with the replacement part.

In the back of most all Kyocera service manuals is a section called Appendixes. In there is a page called Repetitive defects gauge. If you are having a repeating mark on the page, check this out. All you have to do is measure the distance between repeating marks and check this page. It will quickly bring you closer to the affected unit. I know this is not part of your initial problem, but another freebie.

[syspro]

Re: Print Quality Taskalfa 3050CI

Hi i am back again,

thanks for your comments, i printed out a sample set of U089 (see the attachement).

Kyocera_Taskalfa_3050ci_U089.pdf

The dots are on every page (also the colored CMY Pages), the black page has an white area in the middle.

Should i only exchange the black drum or is there anything else wrong ?

Thanks for your support, Tobias

[tmaged]

Re: Print Quality Taskalfa 3050CI

Laser scanner cleaning & DV refresh should take care of the void line. Replace the black drum & clear the black main charge count 930. Do all of your adjustments.

[blackcat4866]

Re: Print Quality Taskalfa 3050CI

Laser scanner cleaning & DV refresh should take care of the void line. Replace the black drum & clear the black main charge count 930. Do all of your adjustments.

Like he said. The black drum does not lose contact just because there is no more black content on the U089 sample set. It remains in contact and continues to make dots the whole time it's in use, for monochrome, full color, and single color prints. Black is always in use. =^..^=

[MMtechSey]

Re: Print Quality Taskalfa 3050CI

i just had same issue and did the black drum replacement and lets just say problem went away! BAM! (MIC DROP)

[The_Murph]

Re: Print Quality Taskalfa 3050CI

I also pull all the charger rollers from each color and inspect them. If they have white build up on them, clean it off. ONLY use water on a rag to clean them. Anything else may damage the surface of those rollers. I usually do the charger rollers first as it gives them time to dry before reassembly.

And here's another freebie; sometimes those charger rollers get bubbles on the surface that look like dots of that color on the page. If I don't have a roller to replace it, I will usually swap it with the one in the yellow unit. It will show up a lot less until I can get back with the replacement part.

I use simple green on all my rollers (and have for 18 years now without incident), including charge rollers. Much less work than using water only, no risk as long as you ensure the rollers are dry. If you replace drums and or MC's, they have been sending out "new style" components. This is a different surface on the drum to reduce drag and a new method for cleaning the MC with an double helix style foam instead of the spinning brush. All of this is covered in the 6052ci class, I highly recommend that you go get certified if you haven't, it will eliminate many of your basic questions.

[syspro]

Re: Print Quality Taskalfa 3050CI

Hi,

a big thanks to Samanator !!!

i have changed the black with the yellow drum and the problem is getting smaller - see the attachment.

Taskalfa3050cinew.pdf

For me it seems that the problem is the old black now yellow drum.

otherwise if the black developer was not ok the problem should remain with balck dots or am i wrong ?

i did the laser cleaning and drum refresh again, what can i do to get a better printing result before echange the black drum ?
There is a white part on the edge of the print, is there a calibration to fix it ?

Any ideas ?

Tobias

[juanatknight]

Re: Print Quality Taskalfa 3050CI

Scan with streaks.jpg
My Kyocera 3050ci has black streaks or blank streaks when printing. I looked at the fuser and it looked fine, could it be the drum?

[darry1322]

Re: Print Quality Taskalfa 3050CI

[ATTACH=CONFIG]37820[/ATTACH]
My Kyocera 3050ci has black streaks or blank streaks when printing. I looked at the fuser and it looked fine, could it be the drum?

Looks like it's only on the black. Possibly the developer unit or something wrong with transfer to the belt. Pull the black drum and dev unit and make sure it's clean and has no obstructions or anything that could be touching the belt.

[blackcat4866]

Re: Print Quality Taskalfa 3050CI

[ATTACH=CONFIG]37820[/ATTACH]
My Kyocera 3050ci has black streaks or blank streaks when printing. I looked at the fuser and it looked fine, could it be the drum?

Yes, two main possibilities:

Dirty black laser slit glass: Run laser slit glass cleaner in Adjustment Maintenance menu

Obstructions under the black doctor blade: Sometimes you can fish then out with a heavy mylar cut in a hook shape. Roll the developing roller while pulling on your mylar tool. Sometimes you can't and must replace the black developing unit. I haven't had much luck with disassembling these developing units.

Mylar Doctor Blade Cleaner.JPG

=^..^=