An image formation apparatus performs calibration to maintain image quality. A locating mechanism in the form of posts positions and holds the catheter in position and limits rotational movement of the catheter. Each of the plurality of receptacles has a distal end with an opening for display, receipt and removal of at least one of the plurality of cards and a proximal end to provide a limit to a depth of receipt for the plurality of cards within the receptacle. As the current passes around the set of cracks, the current generates localized heating in high-resistance dislocations at the crack tips to repair the cracks. The method also includes processing the traction motor signal to create an indication result based on a frequency of the traction motor signal and determining rotational velocity of the traction motor based on the indication result.