Where there's smoke

摘要

I received an e-mail one day, requesting that I investigate an automated test station that I had brought online several months prior. The support engineer explained that the system had inexplicably shut down during some UUT (unit-under-test) troubleshooting and that the engineer running the test smelled smoke in the area. I visited the test area and asked the engineer to walk me through his exact procedure for troubleshooting.