The present invention is directed to a lubrication system having a gasket with integrated lubrication channel for providing lubrication to the surface of an engine part. Thus, it is possible to prevent parasitic capacitance between the pixel electrode and the source line from becoming uneven in a display area, so that it is possible to reduce display unevenness of a liquid crystal display device using the present display device substrate. The method and apparatus are applicable to imaging and inspection systems used with a wide variety of planar and semi-planar objects including but not limited to X-ray inspection of printed circuit boards and integrated circuits. The diagnostic system also includes either a discharge pressure sensor or a condenser temperature sensor, an ambient air sensor and a voltage sensor.