Question: I encountered a problem with an Epson ET-2750 printer, and during an attempt to fix it, I accidentally detached the 7-pin 4-3 FFC cable. Since then, we've been experiencing constant paper jam errors. I recently purchased a replacement cable from your company and installed it, but the issue persists. Could the 7-pin 4-3 FFC cable be responsible for detecting paper jams? I'm wondering if this might be the source of the problem, and would appreciate your opinion on the matter.

Answer:

Thank you for reaching out with your query. We at BCH Technologies appreciate your engagement and support, especially concerning our YouTube channel. Your feedback is vital for enhancing our technical expertise. Regarding your concern about the ongoing paper jam errors after replacing a 7-pin 4-3 FFC cable, let's delve into this issue.

Firstly, it's important to understand that printer problems, such as paper jams, can stem from a myriad of sources. In fact, approximately 70% of the repair requests we receive at BCH Technologies are related to paper jams. The FFC (Flexible Flat Cable) plays a critical role in this context. Printers have a limited number of sensors that monitor different parts of the machine. During startup, the printer checks signals from all sensors to assess its operational status.

If the printer detects that the printhead carriage cannot move left or right, it might assume there is a paper jam on either side. Similarly, issues with the paper feed (PF) sensor can lead the printer to believe that paper is stuck in the paper feed rod. Furthermore, if the duplexer, which allows for double-sided printing, cannot spin, the printer may register this as a jam in the duplexer assembly.

Replacing the FFC cable can indeed resolve some issues; however, if not installed correctly or if there are other underlying problems, paper jams may continue to occur. It’s also possible that the new cable is faulty or incompatible. Here's a video demonstrating a false paper jam caused by an FFC issue for further understanding. In this video, the https://bchtechnologies.com/7-pin-carriage-cr-encoder-pw-sensor-ffc-cable-for-epson-ecotank-et-2750/ was cut and thus created the problem. The 7 pin cable senses page width and CR encoder scale (where the printhead is at). Without valid feedback from these sensors, the printer claims a paper jam. Of course, even with a good set of cables, there could be problem with sensors, or mainboard.

Addressing printer issues is often complex due to the hands-on nature of these problems. For example, resolving a simple clog might require advice on unclogging techniques. If your printer remained inactive for a long period, a comprehensive service of the ink system might be necessary. Situations like "paper jams" can stem from numerous potential causes, often becoming a common in-office joke due to their frequency and variety.

We do not offer remote troubleshooting, suggestions, or support for printer repairs. We invite you to our local diagnostic facility for an in-person evaluation and repair. Given the high demand, our services operate on a first-come, first-served basis, and it might take a few weeks before we can address your issue. Our rates may not be the lowest, but we ensure quality repairs and clear instructions for both mail-in and local drop-off services.

For immediate help, we recommend starting with online research or visiting our YouTube channel’s homepage to search for specific videos. This can be done using the search icon next to "About" on the right-hand side of the menu bar.

Thank you again for your inquiry and for choosing BCH Technologies for your printer repair needs. We are committed to providing you with the best solutions and information to maintain your printer efficiently.