Hello isteinbach. I understand you are experiencing issues where your printer constantly checks itself. This is typically a symptom of a faulty printhead, which is permanently installed in this printer. The troubleshooting in that document is relevant, and you should attempt those steps, if you haven't already. I would also follow these steps to perform a hard reset of the printer:
First, I would like you to perform a hard reset. I will provide instructions on how to perform this task:
1. While the printer is on, unplug the power cord from the printer, and its current electrical outlet.
2. Hold down the power button on the printer for 30 seconds, while it is unplugged. This drains all the electricity out of the machine.
3. Connect the one end of the power cord into the back of the printer.
4. Connect the other end to a direct wall outlet (not a surge protector or power strip). This will ensure the machine can obtain more electricity, since lack of electricity can generate issues like this.
5. Now, try to generate a copy.
If these steps do not resolve the issue, I would install the latest firmware on the printer. I have provided a document on how to update the printer: http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c02919168
If the issue is not resolved, I would contact HP technical support for further assistance, since you will be experiencing an issue pertaining to faulty hardware. Their options will be based on the warranty status of the computer. If you do not have this information, you can locate it at this website: http://h20566.www2.hp.com/portal/site/hpsc/public/wc/home?ac.admitted=1384280905804.876444892.199480143
You can utilize this website to learn how to contact HP appropriately, based on your region: http://www8.hp.com/us/en/contact-hp/ww-contact-us.html
Please let me know if you have any other questions or concerns.
Mario