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The maintenance diagnostic computer (MDC), the flight management computers (FMCs), and the flight guidance comput-ers (FGCs) are in the IAPS card cage (ICC), but they are not part of the IAPS itself. Their are no pilot-controlled operations required for the IAPS. Their are no pilot-controlled reversionary operations for the IAPS. COMPONENTS AND OPERATION INTEGRATED AVIONICS PROCESSOR SYSTEM CARD CAGE The IAPS card cage is the housing that contains all the components of the IAPS. The ICC is in the right equipment rack. INPUT/OUTPUT CONCENTRATOR UNIT The IAPS data receives from and transmits to many external systems. External system data is transmitted through the ICC circuit card. The two input/output concentrator units transmit data to other LRUs related to their operation. The IOCs transmit all the display data from other LRUs to the displays. INTEGRATED AVIONICS PROCESSOR SYSTEM POWER SUPPLY The IAPS has an input from the 28 vdc main busses. The voltage is filtered and applied to the IAPS power supplies. The two power supplies independently supply the applicable voltages to the necessary units in the IAPS. The No. 1 power sup-ply energizes the No. 1 FGC, FMC, and IOC No. 1. The No. 2 power supply energizes the No. 2 FGC, FMC, MDC, and IOC unit No. 2. INTEGRATED AVIONICS PROCESSOR SYSTEM ENVIRONMENTAL CONTROLLER (IEC) The IEC controls the temperature for the ICC. The IEC monitors a pair of ICC temperature sensors and operates fans to control the IAPS environment in each half of the IAPS. The IEC has a power supply, two thermostats, two transducer monitor circuits, a two-speed fan, and a heat exchanger. Sep 13/2004 Flight Crew Operating Manual Volume 2 REV 1 CSP 100-6 03-02-11 AURAL/VISUAL ALERTS |
