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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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FMCS - ELECTRONIC EQUIPMENT COMPARTMENT LOCATIONS
FMCS - ELECTRONIC EQUIPMENT COMPARTMENT LOCATIONS
EFFECTIVITY
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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General
The FMC and CDU primary power is 115v ac from the AC
transfer buses 1 and 2.
FMCS - FMC AND CDU POWER INTERFACE
EFFECTIVITY
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FMCS - FMC AND CDU POWER INTERFACE
FMCS - FMC AND CDU POWER INTERFACE
EFFECTIVITY
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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General
The transfer relays are Ledex type relays. The relays are
mechanically latched to the FMC 1 position.
Operation
The open input to the DEUs and DFDAU cause these systems to
select FMC 1 for data.
The open input to the source select bits of FMC 1 tell the FMC
that there is only one FMC installed.
Training Information Point
You use the FMCS BITE on the ANALOG DISCRETES page 3/4
to do a check of the FMC source selection.
FMCS - TRANSFER RELAY POWER INTERFACE
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FMCS - TRANSFER RELAY POWER INTERFACE
FMCS - TRANSFER RELAY POWER INTERFACE
EFFECTIVITY
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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General
These LRUs supply data to the FMCS:
* VOR/MB
* MMR
* DME.
VOR/MB
VOR 1 and VOR 2 receivers give the bearing and the frequency
data of the VOR stations that are manually tuned by the flight
crew.
The FMC uses this data for FMC position updating in the VOR/
DME mode. The effective range for this mode is up to a
maximum of 25NM.
ILS/GPS/MMR
MMR 1 and MMR 2 give localizer deviation and the station
frequency data of the ILS transmitters that are manually tuned
by the flight crew.
The FMC uses this data for FMC position updating during a final
appoach. The airplane must be within 20NM of the tuned ILS
transmitter and below 6000 feet.
The GPS receivers in the MMRs give this data to the FMC:
* Latitude
* Longitude
* Time
* Horizontal Figure of Merit
* Horizontal Integrity Limit
The FMC uses this data for FMC position updating and actual
navigation performance (ANP) calculation.
DME
DME 1 and DME 2 interrogators give the slant range distance
and the station frequency data that are automatically tuned by
the FMC.
The FMC corrects this slant range for airplane altitude and uses
the data for FMC position updating in the DME/DME or VOR/
DME modes.
Clock
With the GPS valid, clock input comes from the selected GPS. If
the GPS is not valid, you can set the time with the CDU and the
FMC calculates time.
FMCS - DIGITAL INPUT INTERFACE - 1
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FMCS - DIGITAL INPUT INTERFACE - 1
FMCS - DIGITAL INPUT INTERFACE - 1
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FMCS - DIGITAL INPUT INTERFACE - 1
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
General
These components send data to the FMCS:
* DFCS MCP
* A/T
* ADIRU
* DEU
* Engine electronic control (EEC)
* APU engine control unit (ECU)
* FQPU.
DFCS
The flight control computers (FCC) send data to the DFCS mode
　
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