Already change pcu.. but still dirty... only double side only..
Already change pcu.. but still dirty... only double side only..
Bias or contact issue, classic pattern, check the dev contacts on the dev and machine, check the transfer assembly contacts. There is also a leaf spring that contacts a metal roller which you will see when you open the side door. The leaf spring is large and closer to the front of the machine, clean under the contact and also the roller and make sure it makes contact. Causes all kinds of crazy bias and transfer issues.
Looks like generic toner problem that's gradually working it's way across the DV unit.
I think the 3570 did this if the Door Contacts to the transfer roller were dirty.
There is also a leaf spring that contacts a metal roller which you will see when you open the side door. The leaf spring is large and closer to the front of the machine, clean under the contact and also the roller and make sure it makes contact. Causes all kinds of crazy bias and transfer issues.
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