asked Jan 19, 2016 at 5:56pm
Hp HP Color LaserJet 2840

light print on top fades to white at bottom


I had to add felt for carousel motor solenoid, due to printer not able to print colors. AFter reinstalling all parts printer carousel now works fine but it appears that the developer motor is not turning at the correct time. While printing engine test, top of page is visible(but light) and quickly fades to very light at bottom of page. when I look at developer roller I see a void where that color line printed. I marked the white gear on roller and it does move. I just dont think that it is rotating while transfering toner.

Any Ideas??