*
Right CDU

*
Center CDU.

FMCS Component Locations -P1 and P3 Panels
The FMCS components on the P1 left forward panel and P3 right forward panel are:
*
Left and right navigation source switch (P1/P3)

*
FMC selector (P3).

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777 AIRCRAFT MAINTENANCE MANUAL

FMCS -FLIGHT DECK COMPONENT LOCATIONS

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FMCS -MAIN EQUIPMENT CENTER COMPONENT LOCATIONS

General
Each AIMS cabinet has an FMCF. The left AIMS cabinet has the FMCF in the core processor module/airplane condition monitoring function (CPM/ACMF). The right AIMS cabinet has the FMCF in the CPM/Basic.
Main Equipment Center Component Location
The left AIMS cabinet is on the E3-1 shelf. The right AIMS cabinet is on the E2-1 shelf.
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FMCS -MAIN EQUIPMENT CENTER COMPONENT LOCATIONS

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FMCS -CDU POWER INTERFACE

General
These power buses supply 28v dc power to a CDU through an insertion switch:
*
Captain’s flight instrument bus (L CDU)

*
Left bus (C CDU)

*
Right bus (R CDU).

Insertion Switch
When you remove the CDU from the CDU mount, the insertion switch opens and removes power from the CDU.
When you put the CDU into the CDU mount, the insertion switch closes and supplies power to the CDU.
The insertion switch is a spring loaded switch near the connector on the CDU mount.
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777 AIRCRAFT MAINTENANCE MANUAL

FMCS -CDU POWER INTERFACE

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FMCS -FMCF INTERFACES -1

General
The FMCF in the AIMS cabinets receives digital and analog discrete inputs from components, sensors, and switches on these buses:
*
Flight controls ARINC 629 buses

*
Systems ARINC 629 buses

*
ARINC 429 buses

*
AIMS intercabinet ARINC 629 buses

*
Analog discretes.

The FMCF in the AIMS cabinets sends digital data on these buses:
*
Flight controls ARINC 629 buses

*
Systems ARINC 629 buses

*
ARINC 429 buses

*
AIMS intercabinet ARINC 629 bus 2.

Input Overview
These are the components that have an interface on the flight controls ARINC 629 buses:
*
Primary flight computer (PFC) (3)

*
Air data inertial reference unit (ADIRU)

*
Secondary attitude air data reference unit (SAARU).

These are the components that have an interface on the systems ARINC 629 buses:
*
Autopilot flight director computers (AFDCs) (3)

*
Warning electronic unit (WEU) (2)

*
Air supply cabin pressure controller (ASCPC) (2)

*
Cabin temperature controller (CTC) (2)

*
Engine data interface units (EDIU) (2)

*
Flap slat electronics unit (FSEU) (2)

*
Proximity switch electronic units (PSEU) (2)

*
Electrical load management system (ELMS) (3)

*
Fuel quantity processing unit (FQPU) (2)

*
Overhead panel ARINC 629 system (OPAS)

*
Audio management unit (AMU)

*
Card files (2)

*
ARINC signal gateway (ASG).

These are the components that have an interface on the AIMS intercabinet ARINC 629 bus 2:
*
L AIMS cabinet

*
R AIMS cabinet.

These are the components that have an interface on the ARINC 429 buses:
*
Multi-mode receiver (MMR) (2)

*
Ground proximity warning computer (GPWC)

BEJ 008-999
* Passenger inflight information computer (PIIC)
BEJ ALL
* EFIS control panel (2).
The FMCFs receive analog discretes from these:
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FMCS -FMCF INTERFACES -1

*
VHF communication transceiver (3)

*
HF communication transceiver (2)
　
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