How to Fix Epson WF-7840 Error Code 000031: Troubleshooting Paper Feed Motor Issues

Question:
I'm receiving the error code 000031 on my Epson WF-7840 printer. I've tried turning it off and on as suggested, but that hasn't helped. Epson's advice has been inconsistent—some say it needs an engineer, others say it's a driver issue. I’ve even tried a solution I found online about fixing a ribbon cable, but it's for a different model. The ribbon cable in my printer has a crease but isn’t folded. Do you think there’s anything more I can try, or should I give up?

Answer:
Thank you for contacting us. We at BCH Technologies are grateful for your engagement and support, particularly regarding our YouTube channel (https://youtube.com/@bchtechnologies). Your feedback is crucial in helping us refine our technical knowledge and share that expertise with the community.
Regarding your issue, the error code 000031 on your Epson WF-7840 typically indicates a problem with the PF (Paper Feed) Motor. Here's what this error usually points to:
  • CR load position excess load error: The printer is trying to move paper through the feed system but is encountering resistance that prevents it from completing the task.
  • PF Motor Failure: The motor responsible for feeding the paper might not function properly.
  • PF Drive Mechanism Overload: This can occur due to a paper jam or a foreign object lodged in the paper path.
  • Tooth Skip of the PF Timing Belt: This belt helps control the timing of the paper feed, and if it's not properly aligned, the printer won’t be able to process paper correctly.
  • Improper Tension of the PF Timing Belt: If the belt isn’t tight enough or too tight, it can prevent smooth operation.
  • Cable Disconnection: Sometimes, a cable related to the feed mechanism can become loose or disconnected.
The crease you mentioned in the ribbon cable may or may not be directly related to the error. However, the ribbon cable plays a critical role in the communication between various printer components. A crease or misalignment could interfere with data transmission, leading to operational failures.
 
You mentioned you’ve already tried some self-help methods, including watching a video related to ribbon cables. While the model in the video may differ, it’s worth carefully checking the alignment and condition of the ribbon cable. You could try gently reseating the cable to ensure it’s properly connected.
 
Another important point is the PF scale disc, a clear disc that helps the printer track the movement of the paper feed mechanism. If this disc has fallen off or if the sensor that reads it is malfunctioning, it could also trigger the 000031 error. Inspecting this disc to ensure it’s clean, properly aligned, and securely attached could be helpful.
If these steps don't resolve the issue, it may be time to consider a professional repair. While Epson's suggestion of an engineer at £360 is quite expensive, there are a few more things to try before giving up. However, weighing the repair cost against the printer's potential replacement is essential, especially if it's out of warranty.
 
Addressing printer issues can be tricky because of their hands-on nature. Unfortunately, we cannot offer remote troubleshooting or support for printer repairs beyond these suggestions. However, we provide in-person evaluation and repair services at our local diagnostic facility, which you can learn more about here (https://bchtechnologies.com/printer-repair-service). Due to high demand, our services are available on a first-come, first-served basis, so it might take a few weeks to get your printer serviced. We can repair specific parts or the entire printer, and instructions for mail-in or local drop-off services are provided on our website.
We understand that our repair services may not always be the most affordable option. Therefore, we highly encourage you to explore DIY options through online resources. Our YouTube channel (https://youtube.com/@bchtechnologies) is an excellent place to start, as we have a variety of tutorial videos. You can use the search icon on the channel’s homepage to find videos relevant to your specific issue, and YouTube might even recommend videos from other experts that could help.
 
Thank you once again for contacting us and for your continued support. We hope this information helps you troubleshoot the issue with your Epson WF-7840. We’re here to assist you if you need further guidance.