³Ô¹Ïtv / TESTING AND PROTECTIONReview points: Improve PCB Reliability1MissionSeparate measured service conditions fromassumptions.2MechanismState the failure hypothesis and contraryevidence.3ChangeControl variables and preserve constructiontraceability.4VerificationMatch specimen, stress and criterion to thequestion.Explanatory schematic / not an inspection record or released drawing