C280 partial magenta background

**copier addict** · 07-14-2016

I have a C280 in an office that is producing a partial magenta background. The customer says they will print their colour flyers and after 50 to 75 pages they will start to see a light magenta haze over half of the page. All of the consumables are within yield. I pulled the transfer belt and it seems to be cleaning properly. I was thinking maybe a failing printhead, but it seems to me that when they are failing the background is on all sheets.
Has anyone experienced an issue like this? Any help is appreciated.
Thanks

**Max** · 07-14-2016

Can you post an example please?

**allan** · 07-14-2016

I have seen this if its not getting proper charge. Change the magenta drum out with cyan to check it the problem stays on magenta or turn blue.

**kingarthur** · 07-14-2016

I agree with Allan, the grid on the MC corona is probably dirty, if within yield, I strip them down and clean them

**habik** · 07-21-2016

I had C308 that was making a yellow blanket and that was caused by faulty HV PWB. Try swapping the drums and then reseat the HV PWB.

Sent from my iDon't believe in marketing device using Tapatalk

**copier tech** · 07-21-2016

Wen you say "The customer says they will print their colour flyers" are these full page colour prints? if so then your image unit will not hit yield.

**copier addict** · 07-21-2016

When I was there a week ago I removed and reinstalled magenta drum and re-seated magenta dev unit connector. I also noticed (almost 100% sure this wasn't the problem) the shutter had fallen off the magenta toner, likely during installation. I found the shutter in the box and re-installed it on the cartridge. Anyways, I haven't heard back from them, so I hope that means they are not having the problem anymore.
Thanks for all the replies.