HP OfficeJet Pro 8720 jams double sided printing

[aszajlai]

Constant paper jams while printing double sided.  On side clean other side either off by 15-35 degrees.  If not one corner dog eared or paper just torn on one edge if it comes out of the printer.  The greater the ink per page the greater the issue.  Can't find anything stuck.  I want to buy the service manual or download it to be able to pull it apart before I put it into the trash, since it is out of warranty.  Where can I get a service manual to be able to properly pull the printer apart instead of guessing?

[TEJ1602]

@aszajlai, Welcome to HP Support Community!

I see that you have paper jam issues while duplex printing, this could be an issue with paper path rollers in the duplexer.

I'd recommend you follow the steps from the document Paper Jam Error to isolate and resolve the issue.

Since the device is out of warranty, and if this is a hardware malfunction, I may have a few pointers/suggestions to help you out, however, since these suggestions are limited to you and your printer alone, I'd like to send out a private message with those details.

In order to access your private messages, click the private message icon on the upper right corner of your HP Forums profile, next to your profile Name or simply click on this link.

Hope this helps! Keep me posted. 

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