xerox 252 not printing cyan anymore

[mpsolutions]

Re: xerox 252 not printing cyan anymore

Check developer bias contact as on attachment pictures.

Thank you so much. I will check that 1st thing tomorrow.

[mpsolutions]

Re: xerox 252 not printing cyan anymore

Check developer bias contact as on attachment pictures.

I checked the Bias as per photo, it seems fine. It has to be something else of this nature. Meantime problem persists.
Please Help!!!

[InterfaceP]

Re: xerox 252 not printing cyan anymore

Charge HVPS.jpg

That other Forum wont let me load photos. It's no wonder more people use this one.

[adriansto]

Re: xerox 252 not printing cyan anymore

You need to check voltages on HVPS Developer Bias Pwb = item no. 16
Measure the bias voltage, on electronic board, for all three colours and compare.
If you have voltages there then you can change the item no 15 = Charge HVPS.

[mpsolutions]

Re: xerox 252 not printing cyan anymore

image.jpg

You need to check voltages on HVPS Developer Bias Pwb = item no. 16
Measure the bias voltage, on electronic board, for all three colours and compare.
If you have voltages there then you can change the item no 15 = Charge HVPS.

Here is a picture to show the rough/sand like cyan print over the sheet. Despite the fact that the printed image is missing cyan. Sometimes the prints are clean but cyan is always missing.
You dont think there is something else much simpler to think of that could be causing this. Before that we start looking into electronic boards?

[InterfaceP]

Re: xerox 252 not printing cyan anymore

Unfortunately there is no magic switch hiding in the machine. I suggest you preform the procedure:

Originally Posted by adriansto You need to check voltages on HVPS Developer Bias Pwb = item no. 16
Measure the bias voltage, on electronic board, for all three colours and compare.
If you have voltages there then you can change the item no 15 = Charge HVPS.

[adriansto]

Re: xerox 252 not printing cyan anymore

[ATTACH=CONFIG]28836[/ATTACH]
Here is a picture to show the rough/sand like cyan print over the sheet. Despite the fact that the printed image is missing cyan. Sometimes the prints are clean but cyan is always missing.
You dont think there is something else much simpler to think of that could be causing this. Before that we start looking into electronic boards?

Your tech must know when there is not voltage on drum or this voltage is low the image looks like you posted here. The used name for this is background.
But if the paper is rough / sand like that mean the developer is on the paper and this should not happen even there are low voltage on cyan drum.
The developer unit and drums act as a unit so you need to check also bias voltage.
Something is wrong if the developer gets on paper.
Easier at make checkings I dont know.