What items would a driver inspect when the PA Fault light illuminates?

When the PA Fault light illuminates, it's important for the driver to inspect the PA System MCB (Miniature Circuit Breaker) because the PA System is crucial for clear communication and safety in any public transport setting. The activation of the PA Fault light indicates that there may be an issue within the public address system component, potentially affecting its ability to function properly, which could hinder communication with passengers.

Inspecting the PA System MCB allows the driver to identify any potential circuit issues, such as a trip caused by an overload or short circuit, which could be the source of the fault. Ensuring this system is operational is vital for maintaining safety and providing timely information to passengers.

The other options focus on different systems but are not directly related to the PA system. Therefore, they would not be the immediate priority during such a fault condition.