The error message was that the ADF is dirty and I need to clean it. I looked at the user guide on page 27 and tried to follow the directions. but i could see no way to open the ADF cover from the diagram. I went over to the printer to try to open it but I cannot open it. I can open the scanner window and I can open it up where I can get to the ink containers. But I cannot even see how it is possible to open the ADF cover. I would like to fix it myself if possible, but if I can't I would like to know where I can get it fixed.
I understand that you cannot open the ADF cover to clean it, with your HP Officejet 4620 printer. I am happy to help!
Please try the steps in this guide, An ADF Paper Jam Error Displays. If this does not resolve your issue, Please contact HP phone support for further assistance for servicing options. (After you fill out the information, you will be given a phone number.) If you live outside the US/Canada Region, please click the link below to get the support number for your region. Country-language selector.
If this, or any of the posts on this thread, has helped you to resolve the issue, please click on Accept as Solution on said post. To show that you 'like', or are thankful of my post, kindly click the thumbs up below. If there is anything else I can do to help, please be sure to let me know!
Hope this information helps, and thank you for posting! 🙂
Thanks for your answer, but the problem was I did not have enough strength to open the ADF cover and I was afraid to yank too hard for fear I would damage something. But a friend opened it for me. It didn't look possible. So I didn't pull hard enough or I lacked the strength.