Abstract: A processor for developing latent images on a photosensitive material includes at least one processing station wherein a processing solution engages the photosensitive material, and a drying station at which the photosensitive material is dried, means for initiating a plurality of diagnostic tests for activating components of the processor, a controller coupled to the components of the processor for selectively activating one or more of the components according to a selected one of a plurality of predetermined diagnostic tests, a plurality of switches connected to the controller for selecting from among the plurality of diagnostic tests, and an initiator for starting the selected test a predetermined time after the switches are set.

Abstract: A processor for x-ray film includes stations wherein a latent image on the film is developed, fixed, washed and dried. Sensors detect operating conditions in the stations, and when a failure is detected in an operating condition, a lamp and alarm are energized in a predetermined sequence to signal an operator that a particular error exists.

Abstract: A processor has switches that detect events during operation of the processor and provide signals to a microprocessor which controls operation of the processor. A replenishment system for a processing fluid includes a pump that provides replenishment fluid to a chamber. The processor control is changed to a calibration mode of operation and the switches are used to determine the volume of fluid provided by the pump during one cycle of operation of the replenishment system, and then, if necessary, to adjust the time the pump is operated to increase or decrease the volume of fluid delivered during one cycle of operation.