Ricoh 8120s pro Dirty paper edges

**socoolone** · 01-21-2021

I just inherited a 8120s with only 800k on it. Did a full pm on it runs great but the edges of the paper are dirty. Cleaned the paper path and its good for about 1000 prints then it comes back i cant seem to find where the toner is coming from. any help is appreciated.

Thanks

**DRichard** · 01-21-2021

Originally Posted by socoolone

I just inherited a 8120s with only 800k on it. Did a full pm on it runs great but the edges of the paper are dirty. Cleaned the paper path and its good for about 1000 prints then it comes back i cant seem to find where the toner is coming from. any help is appreciated.

Thanks

ALL edges affected or just the lead edge maybe?

**DRichard** · 01-21-2021

Originally Posted by socoolone

I just inherited a 8120s with only 800k on it. Did a full pm on it runs great but the edges of the paper are dirty. Cleaned the paper path and its good for about 1000 prints then it comes back i cant seem to find where the toner is coming from. any help is appreciated.

Thanks

Check out the Troubleshooting section of your Service Manual. It addresses something like what you are describing. Good luck!

**anothertech** · 01-21-2021

Pull out the ITB assy. and take the lower plates off. Are they real dirty? Clean them and check to see if the front and rear edges of the ITB are hanging down, the belt stretches and hang low on the ends, touching the plates.

**TonerMunkeh** · 01-22-2021

Check the filters and the ducting in the back. Were they replaced at PM? If not, toner puffing from the dev unit can cause this. If they are fine, there is a duct under the dev unit that fills with toner when the dev unit fails.

**socoolone** · 01-22-2021

Originally Posted by DRichard

ALL edges affected or just the lead edge maybe?

Leading and trail edges toner seems to collect on the belts before the fuser

**socoolone** · 01-22-2021

Originally Posted by TonerMunkeh

Check the filters and the ducting in the back. Were they replaced at PM? If not, toner puffing from the dev unit can cause this. If they are fine, there is a duct under the dev unit that fills with toner when the dev unit fails.

thanks i will check the filters and the duct

**TonerMunkeh** · 01-22-2021

If you haven't changed them, do all 4. Two in the toner duct and two at the top right hand side.

**socoolone** · 01-22-2021

Originally Posted by TonerMunkeh

If you haven't changed them, do all 4. Two in the toner duct and two at the top right hand side.

Wow the ducts were so dirty i blew them out with air and cleaned the filters and ordered new fans and filters thanks for the help that is not in the service manual. You rock i would have been chasing that forever hopefully this fixes the problem

Thanks again