OfficeJet Pro 8720 prints half page, then "There is a prob... if continues contact HP... 0x61000020"

[InkjetFred]

OfficeJet Pro 8720 prints half page, then "There is a problem with the printer or print system. Turn the printer OFF, then On. If you continue to have get this message, contact HP. 0x61000020"

I have also seen "the printhead appears to be missing, not detected or incorrectly installed. 0xc19a0031 ... but got that after I pulled replaced head (so perhaps my fault), so redid and so far haven't seen that message again.

I have also received "the paper size detected 0 by the printer in tray 1 does not match..." All I can say here is that perhaps the paper slightly "thick" 24lb i was using caused a burb.. so I changed paper to 20 lb and it seems to be OK (for now?).

- I have turned off the printer, disconnected pwr (waited 1 minute), updated software, pulled/reset ink cartridges and ink Head, ran "clean head" and the results page the head cleaner generates prints fully/looks OK.  However, I couldn't finish alignment.The Printer Status report also fully prints OK/full page.

The printer works/prints a few pages occasionally, but then back to my very first line above "There is a problem with...." and there's a partially printed page still in the printer

[KrazyToad]

@InkjetFred

This appear to be a hardware issue with the printhead

If you have already cleaned the printhead, try updating the Firmware. You can refer to this Link: https://support.hp.com/in-en/document/c02919168

If the issue persists please contact HP Support for Service Options

Click on this link - www.hp.com/contacthp/ and select your Country to get the Contact details for HP Support

Thank you 

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.
 

[InkjetFred]

I had already updated the firmware, cleaned heads, reset ink-head and cartridges (pulled and reset ink head and cartridge), pulled pwr plug for 1 minutes+..  The printer report prints in full OK as does the clean head report.. I could not however successfully finish head alignment (perhaps this is the red-flag). When I pull the pwr for a minute it sometimes works/prints oK for a couple jobs , but then back to the "there is a problem...".  I reached out to HP..so far no response. BTW - I've decided that I will never ever again buy anything from a company that doesn't have proper (no fee) basic support. 

[InkjetFred]

However KToad person... thanks for your response!!!   🙂

[KrazyToad]

@InkjetFred

I understand your concerns

I have brought your issue to the attention of an appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicly post personal information (serial numbers and case details).

Thank you