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B. FCU (Flight Control Unit)
(1) Discrete inputs
-------------------------------------------------------------------------NAME ELECTRICAL LEVEL FROM SIGNAL STATUS -------------------------------------------------------------------------
FD1 ENGD MON OWN GND/O.C. FMGC1 GND=ENGAGED FD1 ENGD COM OWN GND/O.C. FMGC1 GND=ENGAGED FD2 ENGD MON OWN GND/O.C. FMGC2 GND=ENGAGED FD2 ENGD COM OWN GND/O.C. FMGC2 GND=ENGAGED LAMP TEST GND/O.C. RELAY GND=TEST FCU1 FAIL GND/O.C. FMGC1 GND=VALID ATH1 ENGD MON OWN GND/O.C. FMGC1 GND=ENGAGED ATH1 ENGD COM OWN GND/O.C. FMGC1 GND=ENGAGED ATH2 ENGD MON OWN GND/O.C. FMGC2 GND=ENGAGED ATH2 ENGD COM OWN GND/O.C. FMGC2 GND=ENGAGED AP1 ENGD MON OWN GND/O.C. FMGC1 GND=ENGAGED AP1 ENGD COM OWN GND/O.C. FMGC1 GND=ENGAGED AP2 ENGD MON OWN GND/O.C. FMGC2 GND=ENGAGED AP2 ENGD COM OWN GND/O.C. FMGC2 GND=ENGAGED FD1 ENGD MON OWN GND/O.C. FMGC1 GND=ENGAGED FD1 ENGD COM OWN GND/O.C. FMGC1 GND=ENGAGED FD2 ENGD MON OWN GND/O.C. FMGC2 GND=ENGAGED FD2 ENGD COM OWN GND/O.C. FMGC2 GND=ENGAGED CHASSIS GROUND GND/O.C. A/C GND PERMANENT FCU2 FAIL GND/O.C. FMGC2 GND=VALID
(2) Discrete outputs
-------------------------------------------------------------------------
NAME ELECTRICAL LEVEL TO SIGNAL STATUS -------------------------------------------------------------------------ATH1 SW COM GND/O.C. FMGC1 GND=PUSHED ATH1 SW MON GND/O.C. FMGC1 GND=PUSHED ATH2 SW COM GND/O.C. FMGC2 GND=PUSHED ATH2 SW MON GND/O.C. FMGC2 GND=PUSHED FCU1 HLTY GND/O.C. FMGC1 GND=HEALTHY FCU2 HLTY GND/O.C. FMGC2 GND=HEALTHY CMD1 SW COM GND/O.C. FMGC1 GND=PUSHED CMD1 SW MON GND/O.C. FMGC1 GND=PUSHED CMD2 SW COM GND/O.C. FMGC2 GND=PUSHED CMD2 SW MON GND/O.C. FMGC2 GND=PUSHED
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C. MCDU (Multipurpose Control and Display Unit)
(1) Discrete inputs
_______________________________________________________________________ | NAME ELECTRICAL LEVEL SIGNAL STATUS | |---------------------------------------------------------------------| | SDI1 GND/O.C. I see the | | SDI2 GND/O.C. I note | | LAMP TEST GND/O.C. GND=TEST | | ACTIVE PORT PROGRAM GND/O.C. GND=HEALTHY | | (FMGC HLTY) | |_____________________________________________________________________|
NOTE : (A/C GND = 1)
____
SD1=1,SD2=0 for the MCDU1.
SD1=0,SD2=1 for the MCDU2.
(2) Discrete outputs
_______________________________________________________________________ | NAME ELECTRICAL LEVEL TO SIGNAL STATUS | |---------------------------------------------------------------------| | MCDU FAIL DISCRETE GND/O.C. FMGC1 & 2 O.C.=FAIL | |_____________________________________________________________________|
NOTE : If the MCDU3 is installed, the MCDU FAIL DISCRETE is not
____
wired.
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_______________________________________________________
1. General
_______
There is a segregation in the routing of the ARINC buses in the aircraft:
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between the side 1 and the side 2
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between the command and the monitoring channels in each side. The detail of the wiring is shown in the schematic diagrams of the circuit CA.
2. ARINC Interconnections
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