A solid picture element that transfers charges completely from a photodiode portion to an amplifying transistor portion to substantially eliminate residual images and methods of its manufacture are disclosed. In an embodiment, the program is repeatedly requested to incrementally tune itself until the performance goal is met or until no further improvement occurs. The convex tooth includes a first surface facing toward the opening direction of the cup holder, and a second surface facing toward the closing direction of the cup holder. An elongate, central airflow defining member is substantially cylindrical for a major portion of its length and extends downwardly from the top cover and past the air inlets.