An internal hardware issue or problem with the motherboard can trigger issues like Epson WF-7620 error code 0x97. While there are multiple troubleshooting techniques to get rid of this, the below-mentioned are the most effective ones:
Restart the printer by disconnecting the printer’s power adapter from the electric socket and connecting it back after two minutes.
If the issue persists, turn off the printer again and open the printer access door.
Check if there is any jammed paper (s) inside the printer. If yes, grab the paper using both hands and remove it gently while ensuring that no paper traces are left inside.
Now, remove the printhead from its slot and clean it using a cloth soaked with lukewarm water.
Fix the printhead back to the slot and close the access door of the printer.