Mp 9000 dirty copies, only leading edge

[Codex]

Re: Mp 9000 dirty copies, only leading edge

Yes i've replaced the brush roller together with the cleaning blade

[blazebusiness]

Re: Mp 9000 dirty copies, only leading edge

Yes i've replaced the brush roller together with the cleaning blade

Replace the developer then......if you have not already done it. And check the seals.

[Codex]

Re: Mp 9000 dirty copies, only leading edge

Replace the developer then......if you have not already done it. And check the seals.

That's why this machine is driving me crazy.... I replaced the developer last week... Then the blade and brush anc corona wires

[allan]

Re: Mp 9000 dirty copies, only leading edge

That machine will feed toner into the developer before it takes the TD reading if you don't install the developer correctly.

[Codex]

Re: Mp 9000 dirty copies, only leading edge

I turn the machine on with door open, entered sp for initialization of developer, closed the front door and then pressed execute

[imihm]

Re: Mp 9000 dirty copies, only leading edge

How many total clicks on machine? i have seen the front guide (black plastic with ridges) on the Transfer Unit wear out on these, causing CQ similar to this. If transfer belt is black & waaaay overdue (some techs think you NEVER have to replace!?) I would start there. The guide wear occurs after 1M usually (unless running a lot of thicker paper)

Hi there....

Although i have no idea about this machine,but check the waste toner mechanism..if there.

Thanks...

[Tonerbomb]

Re: Mp 9000 dirty copies, only leading edge

Have you checked to see if the toner hoses are plugged??? This causes alot of dusting in the machine........

[Codex]

Re: Mp 9000 dirty copies, only leading edge

Yes i checked... But the dusting seems to come from the inside of the pcu assy... But the machine is not in overtoner... Developer is new.... But if i check inside the machine afer 5k copies or so i can see toner dust on the aluminum bar at the underside of the pcu assy

[allan]

Re: Mp 9000 dirty copies, only leading edge

Yes i checked... But the dusting seems to come from the inside of the pcu assy... But the machine is not in overtoner... Developer is new.... But if i check inside the machine afer 5k copies or so i can see toner dust on the aluminum bar at the underside of the pcu assy

Brush down your mag rollers with a copper brush.

[CRISTIAN MULLER]

Re: Mp 9000 dirty copies, only leading edge

Check th gears at the rear of the pcu. Turn the gears with your hand and check if the toner collection coil at the front turns too.i have this gear with the core melted so machine won't make any noise but toner collection coil don't works fine and excess of toner are not collected by the cleaning brush.

[Codex]

Re: Mp 9000 dirty copies, only leading edge

I'll try this tomorrow.... This machine is driving me crazy... Everything works fine... Only this problem with dirty copies...

[slimslob]

Re: Mp 9000 dirty copies, only leading edge

Yes i checked... But the dusting seems to come from the inside of the pcu assy... But the machine is not in overtoner... Developer is new.... But if i check inside the machine afer 5k copies or so i can see toner dust on the aluminum bar at the underside of the pcu assy

That is where the marks on the edge of the paper comes from. The edge rubs against that bar as it comes from the registration roller. Check the PCU cleaning unit. If you have not already, replace the cleaning blade, cleaning brush and filters. Before you put the new parts in, clean all the bushings. Jf the transport coil is not turning freely or the filters are clogged, it will cause toner hazing from the cleaning unit.

[Codex]

Re: Mp 9000 dirty copies, only leading edge

Yes.. The marks comes from there... I replaced the brush roller and the blade... I also cleaned the filters of the cleaning unit.... Tomorrow i'll check everything again

[Codex]

Re: Mp 9000 dirty copies, only leading edge

so guys...i think the problem is solved!....i changed the cleaning blade again, cleaned again the cleaning unit....and the problem disappears........thanks to anyone giving suggestions

[Codex]

Re: Mp 9000 dirty copies, only leading edge

Hy guys.. The problem is back again! Dirty leading edge and heavy dusting inside the pcu assy. This time. I changed the cleaning assy from another working machine, but afer a while the problem came back [emoji35]