[CQ] Robert B.

[Robob]

I've got a Task Alfa 6500i that is producing printed pages with faded image at the front frame edge (approx. 2" wide). Copy images are fine, fading only occurs when printing from PC or printing internal status pages.

Drum, DV and Transfer assy. have been replaced. LSU lens cleaned. I'm doing FWU tomorrow.

Any Suggestions?

RB

[tmaged]

Re: Robert B.

What about your 089 prints ? Nothing about that makes any sense to me.

[blackcat4866]

Re: Robert B.

What about your 089 prints ? Nothing about that makes any sense to me.

I'm with Tony. Are you sure it's not the other way around? Prints OK, copies faded? =^..^=

[habik]

Re: Robert B.

Clean up the whole duct system and transfer section. Firmware is for sure essential to do.

Full Calibration of the Dev and Drum. See what happens.

and yes as above it doesn't make much sense but if it is the way you saying then I'd try with clean-up of the duct and dev + drum calibration

[Robob]

Yes, it's just the way I said: faded prints, good copies. I'll try cleaning ducts, thanks.

[Robob]

089 prints are same as status pages: faded at bottom. I'll go back and try to pin point the problem...
...and yes,I know it makes no sense!
Thank you.

[blackcat4866]

Re: Robert B.

If firmware doesn't help, the only logical choice is the main PWB: 302LF94171
It does the image processing. I might try to blame a driver or PC or even a network connection, but it's affecting internal prints and reports.

Perhaps RAM memory or HDD? =^..^=

[Geo]

Re: Robert B.

089 prints are same as status pages: faded at bottom. I'll go back and try to pin point the problem...
...and yes,I know it makes no sense!
Thank you.

Doesn't make sense ,so I have to ask the question. Is the paper output orientation the same for printing and copying?, Check your laser assy, it may have toner on the outside of the slit glass or even on the INSIDE of the slit glass.

[Robob]

Re: Robert B.

OK. Months later this 6500i is still doing the same thing: dark on rear frame, light on front.
HOWEVER: I think I can see the same thing happening on copies too, it's just MUCH less noticeable. I've just done another 600K pm and it became even more noticeable. I cleaned the LSU lens on the outside, so I think all that is left is the inside of the LSU lens. I'm going back with another FWUpdate tomorrow.

Has anyone had an LSU out and opened one up? Can they be opened up?

Thanks,
RB

[habik]

Re: Robert B.

OK. Months later this 6500i is still doing the same thing: dark on rear frame, light on front.
HOWEVER: I think I can see the same thing happening on copies too, it's just MUCH less noticeable. I've just done another 600K pm and it became even more noticeable. I cleaned the LSU lens on the outside, so I think all that is left is the inside of the LSU lens. I'm going back with another FWUpdate tomorrow.

Has anyone had an LSU out and opened one up? Can they be opened up?

Thanks,
RB

Is it pristine clean? how does the transfer belt area look like? any dumped toner behind the transfer belt? Calibration sensor clean?

[kkendric]

Re: Robert B.

If it was not happening on copies why did you change the drum, dv unit and clean the laser? Aren't they also used in copying? Good chance this problem is main or engine board related. Copying probably uses different IC's than internal printing and printing from a computer. Just an observation.

[Scott]

Re: Robert B.

I to am having a similar problem and I have replaced everything that has anything to do with copy quality but mine does it during any process, KDA is leaning toward LSU

[Robob]

Re: Robert B.

OK, so hang me for a Fool! The copies it was making DID look ALOT better than the prints, but my Super took a look and said that he could see the uneven density on the copies too. (Ha!, "Sure", says I)
So I went back out there today and dug the LSU out of the guts of the machine, opened it up and cleaned all the lenses and the polygon mirror. (BTW, the LSU is easy to get into once you get to it: just one screw and about 5 plastic "hooks") The polygon mirror was the only place I could really see any contamination. Put it back together and, Viola!, perfectly even copy density.

Thanks, Brian. And thanks all for the suggestions!
I gotta get outta this bidness.

[kkendric]

Re: Robert B.

Was the DPI different for printing from computer reports etc?