AR-M455 CQ Stumper of The Year

[Buddy]

Allright, I give up. I have a 455 (Imagistics version) that is making copies with faded areas along the back side (single-sided). It's an image that looks like a weak mag roller, or the mag roller is missing dv on it. When I run the internal test pattern of gray bars I get it and I also get it copying from the glass.


Parts I've changed: Drum, charge unit, developer unit (a new one with fresh dv), transfer roller. I have taken the laser out and cleaned it inside and out. I have not touched the fuser because its fusing OK and the rollers are clean.

HELP (I've got a very P.O.ed customer.)

Thanks in advance.

[Silvertoast]

Re: AR-M455 CQ Stumper of The Year

have u tried holding preasure against the side door while it is making a copy? have seen alot of these were the door is warped or not closing tightly causing poor copy quality. usualy lite grey banding, but could cause other problems worth a look if it is the problem u will need a new side door

[Buddy]

Re: AR-M455 CQ Stumper of The Year

I did trying holding the door, but it didn't make any difference.

[tmaged]

Re: AR-M455 CQ Stumper of The Year

What about the gear on the transfer roller. They'll do that. I've started replacing them whenever I do a PM.

[blazebusiness]

Re: AR-M455 CQ Stumper of The Year

Allright, I give up. I have a 455 (Imagistics version) that is making copies with faded areas along the back side (single-sided). It's an image that looks like a weak mag roller, or the mag roller is missing dv on it. When I run the internal test pattern of gray bars I get it and I also get it copying from the glass.


Parts I've changed: Drum, charge unit, developer unit (a new one with fresh dv), transfer roller. I have taken the laser out and cleaned it inside and out. I have not touched the fuser because its fusing OK and the rollers are clean.

HELP (I've got a very P.O.ed customer.)

Thanks in advance.

Please post an example. Sounds like you've checked all the right stuff. I would have suspected dv unit or laser also.

[Buddy]

Re: AR-M455 CQ Stumper of The Year

What about the gear on the transfer roller. They'll do that. I've started replacing them whenever I do a PM.

Yup, I checked the gear when I replaced the transfer roller.

[Buddy]

Re: AR-M455 CQ Stumper of The Year

Sorry Blaze. I didn't bring an example home, but just picture cloud shaped, light areas on the back edge about an inch by two inches and sometimes smaller. And there's no pattern.

[blackcat4866]

Re: AR-M455 CQ Stumper of The Year

If you're not sure about the transfer gear, the machine will run normal 20# paper stock without the gear. That's the test. Heavy paper requires the gear.

Also check to see if the machine is level front to back. If the machine is high at the back, the mag roller will run bare after only a few revolutions.

I've seen a scratched drum cause that.

On one occasion I reseated the connectors to the laser, and to my astonishment the copy cleaned up.

That's all I've got. =^..^=

[divad2k1]

Re: AR-M455 CQ Stumper of The Year

Had this problem a few times and replacing the LSU always fixed this.

[lky1978]

Re: AR-M455 CQ Stumper of The Year

possible lsu....
or better upload an example to us

[TennWalker]

Re: AR-M455 CQ Stumper of The Year

I agree with the others based on what you have replaced. The LSU has resolved issues like this in the past for me.

Let us know how things work out.

[Buddy]

Re: AR-M455 CQ Stumper of The Year

Turns out I did bring a sample home. (Occasionally I'm not as dumb as I think I am.)

Please see attached.

[blackcat4866]

Re: AR-M455 CQ Stumper of The Year

Good sample. In my interpretation, you definitely have a laser problem (based on the geometric light areas in the main-scan direction, but not all the way across the page), and possibly secondary developing or dirty laser optics problem (based on the graduated lighter area toward the back edge of the page). =^..^=

[Buddy]

Re: AR-M455 CQ Stumper of The Year

Thanks Blackcat. I'll be ordering one.

[lky1978]

Re: AR-M455 CQ Stumper of The Year

Thanks Blackcat. I'll be ordering one.

viewed your attachment, is LSU problem.For me, i ll open up the LASER unit and look at the polygon motor surface got"cloudy" or not.If got just clean it before change the new LSU.