Epson WF-7820 Error 100016: Safe Scanner Checks Before Replacing Parts
- By Ellen @BCHTechnologies
- On Oct 29, 2026
- Comment 0
Question:
What should I check if my Epson WF-7820 shows error 100016?
Answer:
Thank you for contacting BCH Technologies. We apologize for the delayed reply. We know printer problems are urgent, and we want to give you a careful, detailed answer. Thank you for supporting BCH and our YouTube channel.
On the Epson WF-7820, error 100016 may involve scanner startup or movement, but the code alone does not identify a failed part. The video above demonstrates a different Epson model; its parts and disassembly steps may not match your WF-7820.
Turn the printer off and unplug it. Check only the accessible scanner area for an obvious obstruction or damaged travel path. Do not force the scanner carriage or open electrical assemblies. Note whether the scanner tries to move before the code appears and whether it happens during startup or only when you start a scan. Those observations can help distinguish a movement problem from a sensing, cable, or control fault.
If no safe visual check reveals the cause, seek a technician familiar with the WF-7820. The scanner drive, position sensing, cables, scanner assembly, and control electronics may need testing before a part is ordered. Replacing the scanner or a board based only on the displayed code risks unnecessary cost.
Search the BCH Technologies YouTube channel [https://youtube.com/@bchtechnologies] for WF-7820 scanner and 100016 troubleshooting. BCH Technologies can discuss repair-service options if you provide the exact displayed message and the scanner’s behavior when the error appears.