In troubleshooting, what does a visual inspection of a control panel typically involve?

A visual inspection of a control panel typically involves examining wiring and connections. This step is crucial because many issues can arise from loose, damaged, or improperly connected wires. By visually inspecting these components, a technician can identify signs of wear, corrosion, short circuits, or any physical damage that may affect the control panel's performance.

While examining wiring and connections is essential, it does not involve checking software configurations, as that requires a different approach involving the control software itself. Measuring voltage levels also requires specialized equipment and is not part of a visual inspection. Testing components for functionality is an additional step that follows the visual inspection, as it helps confirm whether individual components are working as intended after any visual issues are addressed. Therefore, the focus on wiring and connections makes this option the most relevant for visual inspections in troubleshooting.