[CQ] White streaks ARM257

[mattguthrie]

I have this ARM257 with the streaks shown in Pic. It occurs on internal prints so I have ruled out the scanning system. I have done the following to address it with no success:

>Replaced drum & developer
>Replaced developer & process assemblies(including charger)
>Replaced power supply & high voltage boards
>Replaced side door w/transfer assembly
>Replaced LSU
>Inspected and cleaned process assembly contact springs in back of copier

Any suggestions and insight will be appreciated.

[Akitu]

Re: White streaks ARM257

Clean your laser slit glass. Remove the dev unit and drum, and clean straight up. Else the problem could be something stuck in your cleaning blade...

[mattguthrie]

Re: White streaks ARM257

Clean your laser slit glass. Remove the dev unit and drum, and clean straight up. Else the problem could be something stuck in your cleaning blade...

Thanks for reply. As I previously stated, the problem happens on internal prints too so the optics can be ruled out. The reason for the sky shot example was to exaggerate the defect. Also, I replaced the process unit assembly in which I installed a new blade and new drum to no effect. The developer unit also had new material in it.

[Akitu]

Re: White streaks ARM257

Thanks for reply. As I previously stated, the problem happens on internal prints too so the optics can be ruled out. The reason for the sky shot example was to exaggerate the defect. Also, I replaced the process unit assembly in which I installed a new blade and new drum to no effect. The developer unit also had new material in it.

I said nothing about the optics. Re-read my post.

[mattguthrie]

Re: White streaks ARM257

I said nothing about the optics. Re-read my post.

My mistake. I replaced the entire laser assembly and didn't see anything else that might occlude the beam. Am I overlooking something else in that section of the printer?

[Akitu]

Re: White streaks ARM257

Run a few of those internal prints, and open the door as the paper is passing by the drum. Look at the drum and see if there's a void spot in that location, if the toner is even getting onto the drum. You say you replaced developer, but did you look at the unit itself? I've had bits of paper lodge themselves in the doctor gap of the mag roller and sweep the dev right off the roller.

[mattguthrie]

Re: White streaks ARM257

Run a few of those internal prints, and open the door as the paper is passing by the drum. Look at the drum and see if there's a void spot in that location, if the toner is even getting onto the drum. You say you replaced developer, but did you look at the unit itself? I've had bits of paper lodge themselves in the doctor gap of the mag roller and sweep the dev right off the roller.

There is no toner on the drum so what you say makes sense. I don't recall having looked under the blade w/my own eyes. I'll check.

[divad2k1]

Re: White streaks ARM257

My guess would be the dv cover/seal getting in the path of the laser beam. Had this last year and took me a few calls to find it out.


Correct me if im wrong but i think the cover doesnt come with the dv unit .

And the seal doesnt come with the cover.

[blackcat4866]

Re: White streaks ARM257

My guess would be the dv cover/seal getting in the path of the laser beam. Had this last year and took me a few calls to find it out.


Correct me if im wrong but i think the cover doesnt come with the dv unit .

And the seal doesnt come with the cover.

Correct on both points. And I agree about a warped upper cover or upper seal. =^..^=

[mattguthrie]

Re: White streaks ARM257

The seal is the culprit. I appreciate everyone's assistance. Thanks