Troubleshooting EPSON ET 8550 Error Code 031006: Solutions and Recommendations

Question

I have an EPSON ET 8550 that is having some trouble. After performing manual flushing and cleaning, I encountered error code 031006. Upon disassembling the printhead, I noticed liquid had reached the FFC cables, causing what appears to be minor damage. I also removed the mainboard and used a multimeter to test continuity on F1 and F2 fuses, both of which chimed the meter, though I'm uncertain if I performed the test correctly to determine if a fuse was blown. After reassembling everything, the error persisted. Additionally, the LCD screen won't display, although the printer powers on with two audible beeps, consistent with error 031006. Could there be an issue with the motherboard, and should I consider getting a new one?

Answer

Thank you for contacting us. At BCH Technologies [https://youtube.com/@bchtechnologies], we are grateful for your engagement and support, particularly with regard to our YouTube channel. Your feedback plays a crucial role in further developing our technical expertise.

Addressing the issues you're experiencing with your EPSON ET 8550 involves multiple considerations. Let's delve into each aspect of the problem:

Understanding Error Code 031006:

Error code 031006 on the EPSON ET 8550 indicates a "Head fuse broken error," typically signifying a printhead failure. This is often associated with a blown fuse in the printer's circuitry.

1. Printhead and FFC Cables:
   • Since you've observed liquid damage on the FFC cables, it's possible that a short circuit occurred, leading to the error. Examine the cables for any visible damage, corrosion, or misalignment. Even minor damage can impact the connection, so replacing or repairing the cables might be necessary.
2. Testing the Fuses (F1 and F2):
   • When using a multimeter to check continuity, a chime usually indicates an intact circuit. However, confirming if a fuse is blown involves making sure the two probs are positioned correctly. If the fuse appears intact but issues persist, further inspection of surrounding components is required.
3. Mainboard and B12 Component:
   • Your description suggests that there could be a problem with the mainboard. The B12 component, located above the fuse, might need evaluation using an oscilloscope or signal generator alongside a multimeter. This helps identify issues with the board’s power supply circuits or data pathways.
   • Ensure all connections, especially those related to the printhead and the FFC cables, are secure and properly seated. Sometimes, an improperly connected cable can prevent the printer from functioning correctly.
4. LCD Screen and Power Issues:
   • If the LCD screen fails to display, it may be due to the FFC cable not being inserted correctly. Recheck the connections to the LCD panel, ensuring that they are properly aligned and inserted. Adjusting this cable can often resolve power-on display issues.
5. Considering Mainboard Replacement:
   • If after all these checks the error persists, the mainboard might indeed be the source of the problem. However, purchasing a new board can be costly, and diagnosis by a professional could save unnecessary expenses.
   • If you need us to check and repair the mainboard, you can use this link: https://bchtechnologies.com/fast-track-mainboard-repair-l1800-xp-15000-et-15000-wf-7610-7620-wf-7110-wf-7710-7720-et-8550-et-2720-et-2750printer-mainboard-formatter-board-motherboard-troubleshooting-and-repair/

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems. So, we're not able to provide remote troubleshooting, suggestions, or support for printer repairs. We offer an in-person evaluation and repair service via our local diagnostic facility [https://bchtechnologies.com/printer-repair-service]. Given the high demand, we operate on a first-come, first-served basis. So, it might take a few weeks before we can get your printer to drop it off or mail it to us. Our services are structured to repair either a whole printer or specific parts, with clear instructions on how to proceed if you opt for mail-in or local drop-off services. However, we acknowledge that our rates aren't the most economical. Thus, we highly recommend that you resort to self-help via online research. You can start by checking out YouTube or visiting our YouTube channel's homepage here [https://youtube.com/@bchtechnologies]. Look for specific videos using the search icon next to "About" on the right-hand side of the menu bar. I receive dozens of queries every day asking about videos for specific topics. Having created videos over the past nine years, it's challenging to remember every single one. Therefore, using YouTube's search function would be most efficient. Plus, YouTube might suggest relevant videos from other channels that could assist you.

Thank you again for reaching out to us. We hope this information assists you in diagnosing and resolving the issue with your printer. Please let us know if there's anything else we can help with.