Sepro Robotique SE900‑11 is the integrated control and display unit that serves as the user interface for the Sepro S900 robotic teach pendant, featuring soft‑touch buttons, status LEDs, and a 6‑in.3×1‑in.8 display with ribbon cable I/O connections. Common failure points in this class of panels include power‑supply dropout to the CPU board, degradation or breakage of the 18‑pin ribbon connector, and internal component burn‑outs on the control PCB (e.g., op‑amps, voltage regulators). First‑check diagnostics: verify that the panel’s main power supply is delivering the rated voltage; inspect the ribbon cable for bent pins or corrosion; review any error codes displayed on the panel or logged in the host controller.[oss-gpt-20b]