I performed detailed troubleshooting on the Siemens S7-1200 electrical panel. Tasks included inspecting the circuit breakers for faults, measuring voltage levels across critical nodes using a Fluke 117 Electricians True RMS Multimeter, and checking wiring integrity. I also verified the settings on the Schneider Electric Harmony XB4 series emergency stop button and ensured proper grounding. All components were systematically tested for performance reliability.