³Ô¹Ïtv / ENGINEERING EXPLANATIONSolder Mask Removal / release checkpoints1PurposeDefine access, modification or analysis; preserve evidence when analysis is the goal.2Material stackIdentify coating, copper, laminate and populated condition before selecting a method.3BoundaryMark target and adjacent inspection envelope on the correct revision.4DispositionAgree verification and stop conditions before authorizing controlled rework.Conceptual illustration. Not to scale; examples are not process settings or acceptance limits.