Lighting system and method of controlling lighting system

A lighting system, comprising:

• a light source that includes a plurality of light-emitting devices and emits first light;
• a wavelength conversion member that converts part of the first light into second light having a different wavelength from a wavelength of the first light;
• an optical system where the first light enters and that applies the first light to the wavelength conversion member;
• an optical sensor that receives part of the second light as monitor light and outputs a monitor signal corresponding to an intensity of the second light;
• and
• an output control circuit that controls the light source and the optical sensor,
• wherein the output control circuit performs a light source inspection of a condition of the light source and an optical system inspection of inspecting conditions of the optical system and the wavelength conversion member in accordance with the monitor signal,
• in the light source inspection, the output control circuit inspects each of the plurality of light-emitting devices in sequence, and
• after having inspected at least one of the plurality of light-emitting devices, the output control circuit suspends the light source inspection and performs the optical system inspection before inspection of at least another one of the plurality of light-emitting devices.