Bizhub PRO C6500 horizontal lines in print / drodas78

**Abi Melaibt** · 06-11-2009

Hi. I have the horizontal lines that the red arrows show in the attachment. I changed the four drum units because I thought that it was the drum units but I didn't get any better result. What do you think that is causing this? The problem I have is that I need import any spare part to my country because there's no distributor to buy locally. So I need some advice because I need to buy it and then wait for a while to get it. I want to order the spare parts that I most probably need. Or maybe it can be some adjustment issue? I can give 19,000 dpi resolution of a section of the print if some one thinks it would help to determine possible causes. I sent the image in mid size because it won't upload in higher resolution.

Thank you.

**KyoceraChris** · 06-11-2009

have you tried cleaning the optical mirrors?

**mrwho** · 06-11-2009

Sorry, I can't find the attachment. Where can I check it?

**drodas78** · 06-12-2009

Hi. Here's the attachment if you need a better quality file please let me know. I appreciate very much your help.

**drodas78** · 06-12-2009

Originally Posted by KyoceraChris

have you tried cleaning the optical mirrors?

I haven't tried anything yet. Can you explain me more about the optical mirrors cleaning procedure? Did you saw the attachment? I'm only doing prints from computer, I don't photocopying

**mrwho** · 06-12-2009

That seems to me like you have the underside of of your magenta developing unit dirty. I usually instruct my customers to pull out the unit holding the developing units and belt (can't remember the name) and blow (with their mouths) under each of the developing units to clear the laser paths. You can also take out the developing units and clean them yourself.

**dogsbody** · 06-12-2009

When I see something like that I print test page 1 at 128 density for each colour. You will then probably find something obstructing the laser path for that colour (under the dev tank) as MRWHO said.
Cheers.

**Herrmann** · 06-12-2009

Maybe, this is helpful for you:

**drodas78** · 06-12-2009

Originally Posted by herrmann

Maybe, this is helpful for you:

Can you please upload the image as a jpg zipped with better resolution? I'm gonna try this but I want to be sure of doing the things right.

Thank you.