Which term means finding and fixing problems?

• A. Preventive Maintenance
• B. Blueprint/Schematic
• C. MIG Welding
• D. Troubleshooting

Answer: (D)

Troubleshooting is the process of finding and fixing problems in a system. It involves identifying symptoms, diagnosing the root cause, and applying a corrective action to restore proper operation. In practice, you observe what’s happening, use manuals or schematics to understand how the system should work, test components or circuits to isolate the fault, and then implement a repair and verify that the issue is resolved.

This term is the best fit because it specifically describes locating the cause of a malfunction and repairing it. Preventive maintenance is about planned inspections to prevent failures, not diagnosing current issues. A blueprint or schematic is a diagram of how the system should be built or wired, not the process of diagnosing faults. MIG welding is a method of joining metal, not diagnosing or repairing faults.