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22-10-00
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G56551
A
757
MAINTENANCE MANUAL
L FCCR FCC L FCC
TMC
F/O ASA INDSTBY BUS28V DCR FCC
A
AUTO. FLIGHT
4LAND 2, 5AUTOLAND 2
WARNA/P SERVO ARMP11 4LAND 3, 5 AUTOLAND 3
AFCS MCP
L ENG
4 NO AUTOLAND,5 MANUAL LND
NO LAND 3 3
R ENG
L
L FCC
C
L FCC
GO AROUND
R
R FCC
R FCC
THRUST LEVER ASSY
A/L BUS ISOLATEL F/D INSTR SOURCE
L FCC
SELECT SWITCH
ISLN REQUEST RELAY
R FCC
ASA STATUSL FCC
L
C
R
R FCC
CAPT ASA INDA ASA RESET
F/O ASA INDSELECT SWITCHR F/D INSTR SOURCETEST INHIBIT
RA XMTR/RCVR
MD&T
AA
DISENGAGE L FCC
AIR
F/O A/P DISENGAGE SWITCHR FCC
AUTOPILOTMD&T
R
AUTOPILOT CAUTION LTPROGRAM PINS A/P DISC
GND
DISENGAGE SYS NO. 1 AIR/GND RELAY
R
MD&T CAPT A/P DISENGAGE SWITCHTUNE INHIBIT
GND TEST
NORM
ILS CONT DISCRETE WARNING DISPLAYMODULE
MCDPL FCC
TUNE INHIBIT
TRUE R FCC A/L BUS ISOLATED
ILS RCVR AUTOPILOT (Y)
HDG REF SWITCH
L FCC
INSTR BUS VOLTAGE
R FCC AUTOPILOTSENSE UNITDISC (R)
HYD PRESS. ON
L FCC
L/R EICAS CMPTR
AIR
HYD SYS C PRESS. SWITCH
SERVO ENGADETENT TRIPDETENT TRIP (IN)AUTOTRIM VALID R FCC A/P WARN 2 (BAT.)
SERVO ENGA (IN)
AUTOTRIM ARM
A/P WARN 2R FCC
GND
SAM L
MASTER WARNINGSYS NO. 2 AIR/GND RELAY
1
SERVO ENGA (IN)
DETENT TRIP (IN)1L AND C FCCAUTOTRIM VALID SERVO ENGA2 R AND C FCC 4 GUN 001-050,052-999AUTOTRIM ARM
DETENT TRIP 3 GUN 051, WIRING CONNECTED
5 GUN 051
SAM R 2 DISCRETE - INPUT/OUTPUTC FLIGHT CONT CMPTR (TYPICAL) L FCC BUT FUNCTION NOT USED
Autopilot/Flight Director System Interfaces Schematic
Figure 4 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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D01514
A
757
MAINTENANCE MANUAL
(3) The MCP interfaces with both mach/airspeed indicators (Chapter 34) the Warning Electronics Unit (WEU) (Chapter 31), each FMC (Chapter 34) and the TMC (Chapter 22).
(a)
The MCP has a two-way analog and digital data link with the left and center FCCs, and a separate two-way link with the right FCC. Each FCC has a two-way link with the other FCCs and the MCDP.
(b)
The MCP interfaces with the following units via ARINC 429 data links: 1) Captain's and F/O's mach/airspeed indicators (M/ASI) (Ref
34-13-00, Air Data Instruments)
2) Left, center, and right FCCs (Ref 22-11-00).
3) Left and right FMCs (Ref 34-61-00, Flight Management
Computer System).
4) Thrust Management Computer (Ref 22-31-00).
5) Altitude alert warning module in the Warning Electronic
Unit (WEU) (Ref 31-51-00, Warning System).
(4)
The A/P disengage switches on the control wheels interface with all three FCCs.
(5)
The go-around switches on the thrust levers interface with the TMC and the FCCs.
(6)
Each (2) FLT DIR (Flight Director) select switch selects the L, C, or R FCC as the data source for F/D displays. The left switch, (P1-1 panel) controls the captain's EADI. The right switch (P3-3 panel) controls the first officer's EADI.
(7)
The left EFI (Electronic Flight Instrument) source select switch (P1-1 panel) selects the left or center EFIS SG (Symbol Generator) as the display processor for the left Electronic Horizontal Situation Indicator (EHSI) and EADI. The right EFI source select switch (P3-3 panel) selects the right or center (ALTN) symbol generator for the right EHSI and EADI.
(8)
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