Final answer:
An example of an unplanned out of service condition would be a broken machine.
Step-by-step explanation:
An example of an unplanned out of service condition would be a broken machine. While other options such as scheduled maintenance, a planned power outage, and a routine inspection may cause temporary disruption, they are typically planned and can be anticipated. On the other hand, a broken machine is an unexpected occurrence that can lead to an unplanned out of service condition.