Methods and devices for testing connectivity between connectors on a circuit board include utilizing a bias board having a photoconductive layer coated with a light-transmissive electrically conductive layer in conjunction with a light source and a voltage source to alternately charge and discharge conductors. In various embodiments, an airoil separator includes a cylindrical housing that creates a circular flow path of the air and oil. The second shroud defines an outlet passage. Also presented is a method for attaching the package substrate to a printed circuit board. Particularly advantageous aspects of the described embodiments provide a single common generic face model that is used as the basis for a fitting operation for many different faces. Instruments located in a completed but unconnected well are employed for providing information by a provisional monitoring unit being lowered downhole and connected to the well.