Epson F1 Fuse Replacement — How to Maintain Box Detection Problem

Question:
Good morning. What could cause my printer to fail to detect the maintenance box after I replaced the F1 fuse? The only thing I might have done is damage the cable end. Is the cable and/or sensor you need available?
 
Answer:
Thanks for contacting us! Sorry for being slow in responding to your question. We know that printer issues can be hugely frustrating, so we want to avoid giving you a lazy or uninformative answer. With your click, your support, and our bedrooms in our YouTube office, we can keep perfecting our craft regarding tech. Let’s break down your situation step by step. As for the problem you're experiencing, which is when the F1 fuse is replaced, and the maintenance box isn't detected, this is a common issue due to not handling the cables correctly or damage to the maintenance box detection sensor or the FFC cable. Here are step-by-step suggestions:
 
Check the Cable and Connector:

• The flat flex cable (FFC) connecting the maintenance box sensor to the printer is fragile. It’s pretty easy to not correctly seat the cable when putting the printer back together after replacing the F1 fuse, and it can also crease or damage the cable.
• Inspect the cable for visible fraying, cuts, kinks, and bent connectors.

Sensor Damage:

• If the cable seems fine but the maintenance box is still not being detected, the detection sensor may be the problem. This sensor checks the chip on the maintenance box to ensure the printer and the box communicate properly.

Replacement Parts:
If you’ve found damage, replacement parts can be ordered. Here are the products you will need:
Maintenance Box Detection Sensor: BCH Technologies. Check it out. You can see and buy it here (https://bchtechnologies.com/products/et-8550-maintenance-box-detection-sensor-replacement-for-et8550-et8500-printers)
FFC Cable: We can also supply a replacement cable. They can be found here (https://bchtechnologies.com/products/maintenance-box-detection-ffc-cable-replacement-for-et-8550-et8550-et8500-printers?_pos=1&_sid=6fc17ebe7&_ss=r)
Reassembly Tips:

• When you put the new wire or sensor back in, make sure to tighten any connections and that everything is oriented correctly. Don't bend the cable at sharp angles, or you could damage the new part.
• Please make sure the maintenance box is seated correctly inside the printer.

Test the Printer:

• Once you have made these changes, power on the printer and check for errors, if it still does not recognize the maintenance box, there may be a more serious problem with the mainboard or other components.

Additional Note:
Printer issues can be a rather tricky affair owing to the hands-on nature of the issues. So, we can’t offer remote troubleshooting or printer repair support. We do currently provide in-house diagnostic and repair services in our local facility, which can be found in greater detail here (https://bchtechnologies.com/printer-repair-service), but as it operates on a first-come, first-served basis, our services may carry a wait time. At BcH Technologies, for self-repairs, we recommend using our extensive video library, which is available on YouTube (https://youtube.com/@bchtechnologies). To search for specific topics, click the search icon next to “About.”
Thanks again for your outreach and support—we hope this will help you fix your printer’s issue!