Epson SX-105 Cartridge Recognition Issue After Print Head Flush: Troubleshooting and Solutions

Question:

I have an Epson SX-105 that gets stuck on reading cartridges, and after about two minutes, it throws an "ink out/not recognized" error. This issue started after I flushed the print head, though I’ve successfully done this before. I replaced the detection board, cartridges, motherboard, carriage, cable assembly, and print head, but nothing changed. The printer should be in 100% working order, but it still doesn’t function. A seller told me that the printer needs to be activated with original cartridges—is that true? I also tried flashing an EEPROM from a different model using WIC, which caused new problems like paper feed issues but made the printer recognize cartridges. Does this indicate a software block on my original motherboard? What else should I try before giving up?

Answer:

Understanding the Problem

Even after extensive part replacements, your Epson SX-105 is stuck at cartridge recognition. Since this issue started after a print head flush, there are a few possibilities:

1. Chip Sensor (CSIC Board) Failure: Since you replaced the detection board and motherboard, the Cartridge Status Information Circuit (CSIC) board should be rechecked. This board reads the chips on the cartridges and relays the information to the printer. If it malfunctions, the printer may fail to recognize any cartridge.

2. Firmware Lock or Software Block: Flashing an EEPROM from the wrong model can cause software conflicts. This explains why your printer now recognizes cartridges but has new problems like a faulty paper feed. Some printer models have built-in firmware locks that may prevent third-party EEPROMs from functioning correctly.

3. Printer Initialization and Original Cartridges: The claim that the printer must be activated with original cartridges is primarily false, but there are exceptions. Some brand-new replacement motherboards require initialization cartridges (specific OEM cartridges used for factory setup). However, if your printer didn’t request these cartridges, then this is likely not the issue.

Possible Solutions

1. Chipless Firmware Solution:
   The easiest way to bypass cartridge recognition issues is by installing a chipless firmware (which removes the need for cartridge chips entirely). However, I couldn’t find a chipless solution for the SX-105 on Inkchip.net (https://inkchip.net/soft), which is a common provider of chipless firmware. If you find a source offering this firmware, proceed with caution and ensure it's compatible with your printer.

2. Revisiting the CSIC Board:

   • Even though you replaced the detection board, double-check the CSIC board connections and cleanliness.
   • Ensure no bent or damaged pins where the cartridges make contact.
   • Try swapping with a working CSIC board from another SX-105 if available.

3. Reflashing the Correct EEPROM:

   • Since using the wrong EEPROM created new problems, flashing the correct EEPROM for your exact model might help.
   • Unfortunately, without the proper EEPROM file, there’s no reliable way to restore your printer’s factory settings.
   • You might need to search for SX-105 EEPROM dump files in printer repair forums or try finding an identical working printer to extract the EEPROM.

4. Cost vs. Time Consideration:
   Given all the work and parts you’ve already replaced, you’re likely investing more time and money into the repair than the printer is worth. Unless you can get a chipless solution or successfully restore the EEPROM, it may be more cost-effective to replace the printer. Check the current resale value of the SX-105 in your country to assess whether further repairs are justified.

Final Thoughts

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 (https://bchtechnologies.com/printer-repair-service) via our local diagnostic facility. Given the high demand, we operate on a first-come, first-served basis, and it might take a few weeks before your printer can be dropped off. Our services cover full printer repairs or specific part replacements with clear instructions on the next steps. However, our rates might not always be the most economical. If you'd prefer a DIY approach, we recommend searching for solutions on YouTube (https://youtube.com/@bchtechnologies). You can use the search icon next to "About" on the right-hand side of the YouTube menu bar to look for relevant videos and explore suggestions from other channels.

Thanks again for your question, and I appreciate your patience! If you decide to continue troubleshooting, I hope this information helps you make the best decision regarding your Epson SX-105.