KM 1650 with patches of faint!!!

[same_steven]

I have this KM 1650 that gives me copies with faint patches but when you do print outs, the printouts are perfect!

I have cleaned the optics and infact, I even replaced the scanning lamp and the board below it but I am getting the same results.

then I replaced the High voltage board but nadda.

Is it something to do with the CCD? someone help!

[blackcat4866]

Hare you read any of the posts on this topic? In essence, the ozone emitted from the primary charge collects on the mirrors and slit glass.

Yes, yes ... you cleaned the mirrors. Did you actually look at the mirrors after you cleaned them? I'm betting that there is still an ozone coating that you have not cleaned off yet. Use 99.9% pure alcohol, and a soft towel.

Are you interested in preventing this in the future? Use self-adhesive mylar stickers to close off all orifaces between the fuser and the scanner. If you want to go a step further, line the left side covers with 4mm foam to limit ozone seeping in around the side covers. =^..^=

[bigdaddy]

Hare you read any of the posts on this topic? In essence, the ozone emitted from the primary charge collects on the mirrors and slit glass.

Yes, yes ... you cleaned the mirrors. Did you actually look at the mirrors after you cleaned them? I'm betting that there is still an ozone coating that you have not cleaned off yet. Use 99.9% pure alcohol, and a soft towel.

Are you interested in preventing this in the future? Use self-adhesive mylar stickers to close off all orifaces between the fuser and the scanner. If you want to go a step further, line the left side covers with 4mm foam to limit ozone seeping in around the side covers. =^..^=

Great idea!

[ranachinna]

Hare you read any of the posts on this topic? In essence, the ozone emitted from the primary charge collects on the mirrors and slit glass.

Yes, yes ... you cleaned the mirrors. Did you actually look at the mirrors after you cleaned them? I'm betting that there is still an ozone coating that you have not cleaned off yet. Use 99.9% pure alcohol, and a soft towel.

Are you interested in preventing this in the future? Use self-adhesive mylar stickers to close off all orifaces between the fuser and the scanner. If you want to go a step further, line the left side covers with 4mm foam to limit ozone seeping in around the side covers. =^..^=

Great idea friend

[Zackuth]

I always clean glass and mirrors first with water, then with alcohol and finally gently buff the glass and mirrors with a dry soft cloth. It's a lot of steps, but it does get them clean.

[eddie110171]

We started using windex it leaves so much less residue than the Alcohol. Leaves the mirrors much cleaner.

[Corder]

I have this KM 1650 that gives me copies with faint patches but when you do print outs, the printouts are perfect!

I have cleaned the optics and infact, I even replaced the scanning lamp and the board below it but I am getting the same results.

then I replaced the High voltage board but nadda.

Is it something to do with the CCD? someone help!

Have you cleaned the copy glass itself from inside? Espesially white shading stripe?

[AlbertK]

Hi. Did you check the copy default settings...? maybe someone had itchy fingers.
I would try swopping the developer unit aswell...if the counter is high. Print and copy dont always use the same grade settings as would be expected.
Let us know

[Corder]

Hi. Did you check the copy default settings...? maybe someone had itchy fingers.
I would try swopping the developer unit aswell...if the counter is high. Print and copy dont always use the same grade settings as would be expected.
Let us know

Replacing dev unit won't take you anywhere when test print is ok.