How to Fix the Epson XP-8500 Scanner Error 100077

Question: I continuously encounter the scanner error 100077 on my Epson XP-8500 and have not found a solution from Epson support. Can you offer any assistance?

Answer: Thank you for reaching out with your query. We at BCH Technologies are always eager to assist and appreciate your involvement, especially through our YouTube channel. Your participation is vital in enhancing our shared knowledge base.

Regarding the scanner error 100077 on your Epson XP-8500, this is recognized as a "FB BS+ excess load error," indicating an issue typically related to the mechanical components of the scanner. Here’s a detailed breakdown of possible causes and how to address them:

1. Scanner CR and Motor Issues: The error may arise if there’s disengagement in the scanner carriage return (CR) or the scanner motor pulley. It’s also possible that the scanner motor gears have cracked. Inspect these components for any visible damage or misalignment and consider replacing them if they appear to be faulty.
2. Encoder Problems: The scanner motor encoder might fail to read correctly, which can stop the scanning operation midway. Check for contamination on the scanner encoder and clean it carefully to remove any debris or dust.
3. Scanner FFC (Flat Flexible Cable): Examine the scanner FFC for disconnections, breaks, skewing, or other damages. This cable is crucial for the scanner's operation, and any damage could disrupt the scanner’s functionality.
4. Scanner Encoder Sensor and Motor Failure: If the scanner encoder sensor or the scanner motor itself has failed, these components will need to be replaced. Such failures can prevent the scanner from operating correctly and generate this error code.
5. Main Board Issues: Lastly, a failure in the main board can also lead to this error. The main board controls various functions of the printer, and damage or malfunctioning can manifest in numerous error codes, including the 100077.

Addressing printer issues like these often requires hands-on interventions. For example, even a simple error might indicate a need for more comprehensive maintenance if the printer has been inactive or is frequently used. Each case is unique, and while "paper jam" issues might be commonplace, each instance has its own specific solution, often becoming a lighthearted topic among our technicians. Unfortunately, we cannot provide remote troubleshooting. However, we offer in-person assessments and repairs at our local diagnostic facility. Given the high demand for our services, it is advisable to schedule your visit in advance. You can find additional help by checking out our YouTube channel, where numerous tutorials and troubleshooting videos are available to guide you through many common issues.

Thank you once again for reaching out. We look forward to assisting you further and hope you will continue to engage with and support our technical community.