Which of the following steps is NOT part of troubleshooting signal leakage?

Ignoring small readings is indeed not a part of troubleshooting signal leakage and demonstrates a flawed approach to maintenance and repair practices. In troubleshooting, every signal reading—whether it appears large or small—provides valuable information about the system's integrity. Small readings can indicate subtle problems or developing issues that may worsen over time if disregarded.

In contrast, reducing the sensitivity of the detector can be a step taken to distinguish between noise and actual signal leakage, while disconnecting the ground block may help isolate the problem by determining if the issue resides within the ground path. Additionally, fixing leaks found during inspection is essential to correcting problems and ensuring optimal system performance. Engaging with all readings and findings is crucial for effective troubleshooting and maintaining the overall health of the system.