CS-2550 with light streak.

[eg101]

Have a 2550 with a light streak almost 1/2 inch wide, lead edge to trail edge on copies only. Data sheets and prrints from network seem to be fine.
I have replaced drum and PM parts with no effect. I have cleaned all mirrors and optics, and have even replaced the CCD with no change. Anyone got any suggestions.

[marc]

Re: CS-2550 with light streak.

The white lines is in the middle?????

[marc]

Re: CS-2550 with light streak.

If the white lines is in the middle remove the mirror or use a flash light to check every one sometimes you need to use windex to remove the cloud that is in it....

[marc]

Re: CS-2550 with light streak.

excuse my writting!!!!

[eg101]

Re: CS-2550 with light streak.

The white lines is in the middle?????

On a letter size copy the light streak goes from left to right across the page the full 81/2 inches and is half way (51/2 inches) down the page.
If I run letter 'R' the light streak is the full 11 inches down the page and 3 inches from the left edge of the paper.

[marc]

Re: CS-2550 with light streak.

I had that problem with this machines and i fixed removing the left upper mirror and cleaned with windex check the other mirror these machines I don't know why but depend in the location start forming a blue smoke cloud in the mirror you need to remove the mirror if you want to see it good luck....!

[Zackuth]

Re: CS-2550 with light streak.

You likely have a build up of ozone, which alcohol products will not remove. Clean the mirrors with water. I did this with an issue just like yours and it worked. Now, I always use water first then use rubbing alcohol to clean all my mirrors.

[tech07]

Re: CS-2550 with light streak.

These guys are correct..After you get those mirrors super clean, clean them again, plus one more time

[JR2ALTA]

Re: CS-2550 with light streak.

Everyone is right about water etc on the optics.

But I am surprised you didn't see improvement (hence: on the right track) by cleaning it the first time no matter how you did it.

So my question is how did you clean the optics? It's three mirrors, each with one working side.

The theory I've heard is that the left side door's upper idle rollers melt, and disintegrate leaving fumes to fog up the mirrors.

[blackcat4866]

Re: CS-2550 with light streak.

I don't know if it's making any difference yet, but on a couple of 1650's and 1635's I've installed foam gaskets in the left side cover to re-direct the ozone out through the vents over the fuser. I didn't really have anything suitable. The customer donated a mousepad (~3mm thick), which I cut up into 13mm wide strips, and attached it.

If you examine the cover, scanner frames, and mirrors you can see an airflow path up through the left side cover, through three openings in the left side of the scanner, and across mirror #1. =^..^=

[MR Bill]

Re: CS-2550 with light streak.

Go into simulation and turn down the fuser temp about 10 deagrees in all settings. . Sim 161?

Yes the heat from the fuser bakes the plastic and the fumes settle on the mirrors. Very common problem.

[NeoMatrix]

Re: CS-2550 with light streak.

Try the enlarge and reduce functions in copy mode:
Does the light streak enlarge and reduce in size ?

[eg101]

Re: CS-2550 with light streak.

Thanks guys. I'll go back and pull the mirror.