The Footlocker wiring sheet primarily shows the interconnection of the AC input module, the AC connections inside the FootLocker Interface Chassis (FLIC), and the connections for the over temperature circuit. The AC Input Module is connected to the FLIC by a short cable that connect J1 to J1. The wires in this cable are called out in the table marked J1 just below the AC Input Module. The FLIC J1 connector is wired directly to terminal board TB1. The drawing of TB1 calls out the terminal number and the signal attached to each terminal. The blocks on the right side of the diagram represent the various modules and panels screwed into the front of the of the FLIC. As the diagram shows, AC power is supplied to the DC power supply module, the fan solid state relay, the LN2 Fill solid state relay, and the Shutter controller module. The lines on the right side of the front panel modules represent the DC power connections to the other modules. The rectangle below the power supply module represent a test point panel for the power supply outputs for trouble shooting.
The other connections to TB1 are associated with the over temperature circuit which drops the AC power to the FLIC and CCD Controller if the temperature in the FLIC rises above about 85 degrees Fahrenheit. The lowest rectangle on the right represents the push button switch that is used to reset the AC power to the FLIC, and thus, the CCD Controller after an over heating event. (Note that the Selco thermostat will not reset until it goes below about 67 degrees Fahrenheit.) Below TB1 is the thermostat. It is mounted near the center of the FLIC chassis in free air. In the lower left corner of the drawing is the representation of the sonalert for the system. It is mounted on the top of the HIRES instrument room and wired to J4 on the back of the FLIC via a conduit through the top of the footlocker. See EL-3419 for a full description of the operation of the over temperature circuit.