My printer is HP LaserJet enterprise m551dn. printed aprrox. 26000 pages. My problem is that last page of my any document shows faded black color in bottom 30 %. CMY IS OKAY. this happens for both printing from windows computer and from printer screen e.g. demo pages configuration pages. engine test page is okay with formatted in position. I have changed the ITB , fuser and cartridges but the problem persists. Are my black/cyan laser assembly faulty. If my document has two pages, the second page which is the last page shows bottom 30% black fading.