Konica C253 - colors do not match

[AlexanderKonica]

I have a problem with a Konica Bizhub C253.

All color prints alone OK.

But to gether the colors not match.

IU and Toner and Belt new.

Adjust with X / Y no sucess.

[Copier Addict]

Re: Konica C253 - colors do not match

I have a problem with a Konica Bizhub C253.

All color prints alone OK.

But to gether the colors not match.

IU and Toner and Belt new.

Adjust with X / Y no sucess.

Have you cleaned the IDC sensors?

[copyman]

Re: Konica C253 - colors do not match

Remove transfer belt, slide over metal plate covering the IDC sensors. Blow both sensors out with air, install transfer belt and do gradation adjustment.

Also assuming you cleaned print head windows x 4 with wand on front door.

[AlexanderKonica]

Re: Konica C253 - colors do not match

I tryed this.

Remove transfer belt, - Yes
slide over metal plate covering the IDC sensors. - I have it under a plastic - but i cleaned this
Blow both sensors out with air, - Yes
install transfer belt and do gradation adjustment. - Yes

Also assuming you cleaned print head windows x 4 with wand on front door. - Yes



But it doesn't get any better



1 Year ago my yellow had a problem to much toner on the IU and on the paper. Toner was in the cabel connector from the PH. Cleaning the connector and cabel an all was good. But here ?

[blackcat4866]

Re: Konica C253 - colors do not match

An Auto Gradation Adjustment would be a good idea. =^..^=

[Cantechman]

Re: Konica C253 - colors do not match

I have a problem with a Konica Bizhub C253.

All color prints alone OK.

But to gether the colors not match.

IU and Toner and Belt new.

Adjust with X / Y no sucess.

That's a dinosaur these days, I would also look at the 2nd image transfer roller, there a lot of possible issues, I would definately do as the others said as well.

[AlexanderKonica]

Re: Konica C253 - colors do not match

I tryed - all things.

Remove transfer belt
slide over metal plate covering the IDC sensors.
Blow both sensors out with air
install transfer belt
gradation adjustment.

Also assuming you cleaned print head windows x 4 with wand on front door.

But not better.

2nd image transfer roller - ? What should i do?


I had before P9, P21 and C2558 - - The issu was da defekt IU K - I changed and clean the IDC sensor - but the C253 hang up wenn i will start at Konica Minolta Screen, i do a firmware und format HD - an it works but the printing ist not good. No Error Code.

The IU is new or almost new, Toner all new, transferbelt 4-5 month old.

Last year i had i problem with yellow - a toner hill was on the IU. I changed IU, cleaning ... but not better.. I solved it - in the connector from the PH was toner ... i cleaned an all was ok.

Here my prints

[copyman]

Re: Konica C253 - colors do not match

How were you able to do gradation adj with "P" codes?

If you did everything you posted and still have color registration issue then I would suspect Image units even though you say they are good.

[AlexanderKonica]

Re: Konica C253 - colors do not match

All P-Code was gone after cleaning the IDC sensor, an the Laser (with the stick) 4 new toners and a new K image drum.

I check whether I still have new ones/exchange Y K and M, K is still under 100 test prints. Get in touch again.

[AlexanderKonica]

Re: Konica C253 - colors do not match

So i tryed to change the Drum, now my stock is almost empty.

I changed Y M C Drum - the black is 1-2 Weeks old.

gradation adjustment.

[copyman]

Re: Konica C253 - colors do not match

Ok, I think you covered everything. Next step I would do it initialize machine and see how it looks. If still issue do gradation adj again.

By the way what are IDC voltages under state confirmation in service mode? They should be around 3v each. If not I would look at replacing the IDC sensors.

[AlexanderKonica]

Re: Konica C253 - colors do not match

IDC1 ist 4.36 V, IDC2 ist 4.33 V - ist this OK? Manual says about 4.3 V

So i tryed a little bit more, i checked the PH Unit - The glas under the cover was dirty with toner Y, M, C - Black was clean.

And i checked the connector.

Test print - the same

gradation adj - the same

Then i read PH unit mechanical adjustment in the service book.

I try from Step Value X (Start -10 til- 3) to step value 200 - Initialize + Immage Stabilization .. but no sucess.

Black is long, the colors shorter C, than M and Y.

I the manual stand:
Test pattern Single Hyper Gradation 4 Colors.pdf

Is a Software / Firmware problem possible?

[copyman]

Re: Konica C253 - colors do not match

IDC1 ist 4.36 V, IDC2 ist 4.33 V - ist this OK? Manual says about 4.3 V

So i tryed a little bit more, i checked the PH Unit - The glas under the cover was dirty with toner Y, M, C - Black was clean.

And i checked the connector.

Test print - the same

gradation adj - the same

Then i read PH unit mechanical adjustment in the service book.

I try from Step Value X (Start -10 til- 3) to step value 200 - Initialize + Immage Stabilization .. but no sucess.

Black is long, the colors shorter C, than M and Y.

I the manual stand:
[ATTACH]59836[/ATTACH]

Is a Software / Firmware problem possible?

Sorry I was thinking of the 4 series IDC voltage is around 3V.

Did you initilize the machine in service mode? This should reset all settings back to factory default and you can start fresh.

[AlexanderKonica]

Re: Konica C253 - colors do not match

Today i try to do firmware update. All ok but no printing success.

I tryed to adjust in the Service Menu.

This should reset all settings back to factory default and you can start fresh. -> over the Webbrower Konica Menu, NVRAM Reset / Initial, or?

I read about a problem with the Black PH, i will try out all laser and reinstall or should i change die PH Units (i have on in my stock)?

I will to this, when i am alone in the office..

[AlexanderKonica]