I am having lite yellow background on half the page on a color copy.it only happens after 90 coPies or so.like a yellow haze.has version 12 fw. Copying from feeder.first copies look great.that's the weird thing.vac.out all units.cl.drum grounds.any ideas?thanks 41,000 color/24,000 bk

This message has been edited. Last edited by: Devdumper,

Does it happen on prints too, or just copies?

Both. First copies look great. Then gradually background yellow appears after approx 50 copies. The edges around the lead edge void and around the copy are clean and white like they should be. the copy and color, is what it should be. the background shows up more on one side and fading into the center.Like a marbling overtoned yellow on one side.But if you send or copy something it looks great until...?

You could try the yellow dev unit.
Or...
Do a dev refresh,
then do a sim 464 AC CAL, set to 4
then do a sim 410 and a sim 412.
This usually whips things back into shape