Ir5570 light copy

[lazo7]

Re: Ir5570 light copy

This allmost full white page is when the potential sensor is turned on, and the black one is when I turn it off.
Could there be problem with potential sensor?

[pjdbm]

Re: Ir5570 light copy

You should have started a new thread


You might have to replace the po sensor/harness/board complete as one kit.

Had something similar on an ir5055, I replaced the laser and then the HV board w/transformer , I got the machine where it makes good copies with po off but with it on it is almost totally white.

My next call I will change out that kit I mentioned. (customer is too pissed off at the moment to go back)

[lazo7]

Re: Ir5570 light copy

Today we tryed turning off potential sensor, after that we got the image, but the background was all black. After few adjustments (HV-PRI and BIAS) we got the image right. Does this mean that there is definitely something wrong with the PO sensor/harnes/board? Pjdbm sorry for not opening a new thread, I tought that it would be beter to post it here because it is very similar problem. Thanks for advice by the way.

[pjdbm]

Re: Ir5570 light copy

nothing is definite, its the final step I believe.

I mentioned the new thread because people will just pass up a thread started that long ago

Good luck

[mramlawi]

Re: Ir5570 light copy

Hello Guys !!

i have the same problem at the same Copier my client called me and told me that the document exit full back ground ,all what i did just replaced the Primary corna , and it works for 2 weeks then i get the same problem .i think its a HV problem .
thanks Tecktat for your special efforts

[livancicm]

Re: Ir5570 light copy

try turning drum back to front and check toner

[XCanonTech]

Re: Ir5570 light copy

Hi All, might be worth checking air and ozone filters, this is something most techs forget and causes a build up of ozone and heat in machine which will cause adverse copy quality

[lazo7]

Re: Ir5570 light copy

try turning drum back to front and check toner

I'm sorry livancicm, but I didn't understand what you were trying to say. How do you mean that I check the toner? Thanks.

[lazo7]

Re: Ir5570 light copy

SEE PDF---



HVT Cables usually always look good on the outside/

Learned a lesson the hard way on CLC700/800/1100 -
it's the interior part of the cable that craps out

Thanks for PDF. I did everything what it said to do exept replacing the developing unit, because I don't have one.
1. I have eliminated humidity as a source of problem by turning the enviroment switch on.

2. Returned all of the following to the default settings indicated on the service label in service mode

COPIER>ADJUST>V-CONT>EPOTOFST/VL-OFST/VD-OFST/DE-OFS-P/VD-OFS-P/DE-OFST/VLOFS-P. Set"1"to the following in service mode: COPIER>FUNCTION>DPC>DPC (to force execution of

potential control). After that LPOWER-P and LPOWER-C both had values of 255. In the instructions it said that if those values exceded 221, that laser scanner unit needs to be refited. I did that and after performing another force execution of potential control, values dropped ( LPOWER-P: 57, LPOWER-C: 48)
After all of that, the image was the same, so I shoul have changed the developing unit, but unfortunatelly I don't have it. I don't think that there is a problem with developing unit, because there is an even coating of toner on it,and when the potential sensor is turned off, the image is very dark, and the whole background is dark.

[livancicm]

Re: Ir5570 light copy

iz skena se vidi da imas rupa na valjku ako potencijal senzor pogodi na rupu daje pogresno ocitanje
orginal toner

[lazo7]

Re: Ir5570 light copy

iz skena se vidi da imas rupa na valjku ako potencijal senzor pogodi na rupu daje pogresno ocitanje
orginal toner

[lazo7]

Re: Ir5570 light copy

Yesterday I've changed the PO sensor, and PO sensor board, but that gave no result. Today i have changed laser scanner unit, but that didn't help as wellk. I've changed those three things first because I had it in stock, I didn't have to order it. Now i am waiting for the HV cable, and HV board. Hopefuly, that would help. If anybody has some kind of advice, I'll be very gratefull.

[pjdbm]

Re: Ir5570 light copy

I've changed the PO sensor, and PO sensor board

you did not mention the HARNESS, did you change the harness going from sensor to board?

[XCanonTech]

Re: Ir5570 light copy

Hi Lazo7
1, what is the reading on vdt / vdm and vlt / vlm
2, also there is a toner save setting in either level1 or 2 service mode, copier/option/body or user and it is called cotc-d I think, it should be set to 0

[zoraldinho]

Re: Ir5570 light copy

HI dudes

It's much better to open new threat,because guys on the forum don't like to comment on 1 year old post.




Cheers.