777 AIRCRAFT MAINTENANCE MANUAL
FDRS -SYSTEM SCHEMATIC
Schematic
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777 AIRCRAFT MAINTENANCE MANUAL
FDRS -SYSTEM SCHEMATIC
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777 AIRCRAFT MAINTENANCE MANUAL
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BOEING PROPRIETARY -Copyright # -Unpublished Work -See title page for details.
FLIGHT COMPARTMENT PRINTING SYSTEM -GENERAL DESCRIPTION
General
The flight compartment printer supplies high-speed hard copy of text for these systems:
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Primary display system (PDS)
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Airplane condition monitoring system (ACMS)
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Central maintenance computing system (CMCS).
The flight compartment printer receives data from the print driver partition of the data communication management function (DCMF). The DCMF is part of the airplane information management system (AIMS). The printer sends status and error information back to the DCMF.
The DCMF prioritizes data sent to the printer in this order:
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Flight deck communication function (FDCF) of the DCMS
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Central maintenance computing function of the CMCS
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Airplane condition monitoring function of the ACMS
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Multifunction display (MFD).
Abbreviations and Acronyms
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ac -alternating current
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ACMS -airplane condition monitoring system
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AIMS -airplane information management system
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CMCS -central maintenance computing system
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CPM -core processor module
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DCMF -data communication management function
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DCMS -data communication management system
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FDCF -flight deck communication function
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LAN -local area network
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MFD -multifunction display
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OPC -operational program configuration file
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OPS -operational program software
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PDF -primary display function
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PDS -primary display system
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FLIGHT COMPARTMENT PRINTING SYSTEM -GENERAL DESCRIPTION
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FLIGHT COMPARTMENT PRINTING SYSTEM -COMPONENT LOCATIONS -FLIGHT COMPARTMENT
Flight Compartment Component locations
The flight compartment printer is on the P8 aft aisle stand panel. It is in front of the cabin interphone handset.
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FLIGHT COMPARTMENT PRINTING SYSTEM -COMPONENT LOCATIONS -FLIGHT COMPARTMENT
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FLIGHT COMPARTMENT PRINTING SYSTEM -COMPONENT LOCATIONS -MEC
Other System Component Locations
The print driver is a software partition in the data communication management function (DCMF). The DCMF is in the AIMS core processor module/communications (CPM/ Comm) in both the left and right AIMS cabinets. Both AIMS cabinets are in the main equipment center.
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FLIGHT COMPARTMENT PRINTING SYSTEM -COMPONENT LOCATIONS -MEC
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FLIGHT COMPARTMENT PRINTING SYSTEM -INTERFACES
Power
The right main ac bus supplies power to the flight compartment printer.
Discretes
The left AIMS cabinet sends an enable discrete before it sends the printer data load.
ARINC 429
The flight compartment printer receives new operational program software (OPS) on the data load bus from the left AIMS cabinet.
The DCMF in both AIMS cabinets sends print data to the printer on the DCMF data bus.
The central maintenance computing system (CMCS) in the left AIMS cabinet sends test data to the printer on the CMCS bus. If the left AIMS cannot send CMCS information, it will send the information from the right AIMS cabinet.
The flight compartment printer sends status and error messages to the DCMS in both AIMS cabinets over the status bus.
Analog
The master dim and test module supplies the power for the indication lights on the front panel. The master dim and test module also sends a test input to the printer.
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