PURPOSE: To obtain a photosensitive material processing device capable of rapidly specifying a faulty spot by performing action check to detect the on/off state of a sensor or an equipment in the device in the midst of processing photosensitive material.
CONSTITUTION: When trouble is caused while the device is working, an error code is displayed on the 7-segment display part 85 of a display panel 79. By letting an operator change a dip switch in the device or perform a specified operation to a specified switch on the display panel 79 while the device is working, the device is shifted to the action check. By operating a display changeover switch 87, the result of the action check of a developing part or the result of the action check of a chemical mixer is displayed on the display part 85 of the display panel 79. Since the action check to detect the on/off state of the sensor or the equipment in the device is performed in the midst of processing the photosensitive material, the faulty spot is rapidly specified.