Konica minolta bizhub c452 magenta dirty background

[donrushs]

Hello, i have KONICA MINOLTA BIZHUB C452, but after every printing/photocopying about 200 copies it starts printing some dirty magenta backgrounds as shown on attached photos, what could be the problem and how to fix it?

The settings of MAX IMAGE DENSITY ADJ and IMAGE BACKGROUND ADJ, are as shown on attached photos. PLEASE HELP ME WITH THE INSTRUCTION ON HOW TO FIX IT.

dirty copy.jpgdirty copy2.jpg

image1.jpgIMG_9689.JPG

[Synaux]

Hello, i have KONICA MINOLTA BIZHUB C452, but after every printing/photocopying about 200 copies it starts printing some dirty magenta backgrounds as shown on attached photos, what could be the problem and how to fix it?

The settings of MAX IMAGE DENSITY ADJ and IMAGE BACKGROUND ADJ, are as shown on attached photos. PLEASE HELP ME WITH THE INSTRUCTION ON HOW TO FIX IT.

dirty copy.jpgdirty copy2.jpg

image1.jpgIMG_9689.JPG

Have you replaced the Magenta IU what is the meter on the IU?

[DelawareJim]

I would: set all of the background voltage margins and maximum density settings to 0 (zero). Then, replace the magenta image unit with a new one. Finally, do a gradation adjustment, and you should be good.

[Ubtessy]

Hello, this is why I open a thread about Repairing of IU than buying a new one. Open the imaging Unit and change the Cleaning Blade before doing the gradation.