What is the definition of troubleshooting?

Troubleshooting refers specifically to the process of identifying, diagnosing, and resolving faults in a system or equipment after they have developed issues. This involves a systematic approach to discovering both the symptoms of the problem and the underlying reasons for those issues, ultimately leading to their repair.

The other options, while related to equipment management, describe different activities. Preventive maintenance focuses on actions taken to prevent faults before they happen, rather than resolving existing issues. Designing new circuits pertains specifically to the creation of new systems rather than fixing current problems. Monitoring device performance involves ongoing observation of system efficiency and functionality but does not encompass the corrective measures needed to repair a malfunctioning system. Therefore, the definition that best aligns with the concept of troubleshooting is indeed the process of locating and repairing faults after they occur.