Ir 4570 fade print problem

[sundeep202]

My print or copy fades gradually in upward direction. It is fine at bottom or at mid.
Plz suggest me possible reasons.

I have cleaned the laser, changed the drum as well as cleaning blade.
teckat if u can see plz help me as u have done in past.

here is the sample print IMG_0006.jpg

[Tricky]

Re: Ir 4570 fade print problem

Compatible toner can cause problems like that.