[CQ] HP 8150 Print qualty problems only when duplexing

[Guest]

Hello I am work on a HP 8150 that puts toner on the edge of the paper only when it is duplexing I have attached samples I need to know if it can be the HVPS or the DC controller the paper is being feed landscape

[Rick Martinez]

have you tried replacing the transfer roller? how about toner?

[JustManuals]

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Paul@justmanuals.com

[faxman28]

Have you cleaned the duplexer ?

[CanonHPTech]

Yes, I second that, have you cleaned and checked duplex path? However, if you are running it landscape then what you are showing in the page is not the lead edge? Also, it is hard to make out if its just a dirty edge or a line across the top of page. If it is a line across the page it almost appears to be a timing/late start issue. Can you jam it and see when and where line appears before transfer roller on second side or before fuser?

[prntrfxr]

Perform a registration adjustment for reverse side. Instructions for how to do this are in the service manual.

[Ausand]

I have installed a maintenance kit and have clean all parts of the machine and done the duplex registration adjustment and the toner is a new oem cartridge. I have checked the toner cartridge after a duplex job has been ran and there is a 1/4 inch black band on the drum on both the rear and front sides of the drum and it only appears on duplex. single prints are ok

[ucinn]

We have a 9050 MFP doing the same. Talked to another tech today and said it's the trxfer roller. He said he's seen it before and replaced it again to fix it. He said it happens a lot with aftermarket parts.

[Ausand]

Problem solved
It was the transfer roller
thanks to all who helped