Isolation

All actions performed as a result of failure to restore an item to a specified condition. These can include any or all of the following steps: localization, isolation, disassembly, interchange, reassembly, alignment, and checkout. Corrective maintenance provides a process to identify and implement the set of tasks to restore an item to service after a failure.

Nondestructive ways to verify the operation and functions of a circuit; usually done multiple times "on the fly" at either startup or field usage stage. BIT is an integral capability of the mission equipment, which provides an onboard, automated test capability, consisting of software or hardware (or both) components, to detect, diagnose, or isolate product (system) failures. The fault detection and, possibly, isolation capability is used for periodic or continuous monitoring of a system's operational health, and for observation and, possibly, diagnosis as a prelude to maintenance action.

A process to detect and remedy inadequacies in an item. Not to be confused with burn-in, fault-isolation, or screening.

Isolation to the product subunit which must be replaced on line to return the product to operation. A subunit can be a modular assembly, or a component such as a crystal or antenna subsection. In the event that the maintenance concept requires a subunit to be removed, repaired and then replaced in the product, initial isolation includes both isolation to the failed subunit and isolation to the failed and removable portion of the subunit.