How to remove Error: 0xf0af8004 on HP printers

The product displays an 0x ... error code when printing (for example Error: 0xf0af8004). These error codes indicate that the product has an internal condition.
Solution
Use the instructions below to resolve the issue by restarting the product.

Solution:

1. Without turning off the product, disconnect the USB cable from the rear of the product.
2. Remove the cartridges from the product.
3. Wait for the 'Insert Cartridges ' message to display on the control panel.
4. Disconnect the power cord from the back of the product.
5. Wait 60 seconds.
6. Reconnect the power cord. If the product does not automatically turn on, press the Power button .
7. Reinsert the cartridges, and then close any open doors on the product.
8. If you receive a prompt to print a calibration page, do so.
9. Reconnect the USB cable to the rear of the product, and then try printing again.
10. If you have completed all the steps listed above and are still experiencing a problem, service the product. or contact HP technical support for assistance.