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757
MAINTENANCE MANUAL
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FLAP POSITION
TO/GA MODE REQ TMSP POWER STATUS
CLB MODE REQ RTG1 REQ
FLAP SLAT ELECTRONICS UNIT-1CON MODE REQ RTG2 REQ CRZ MODE REQ SEL TEMP BITS 0-4 (5) RIGHT SHUTOFF VALVEECS PACK L HI/LO
TMSP SENSE (DC)
ISOLATION VALVELEFT COWL ANTI-ICEECS PACK LWING ANTI-ICE THRUST MODE SELECT PANEL
SPD MODE REQ ALT HOLD MODE OPER
THRUST MODE REQ FL CH MODE OPER
L ECS BLEED CARD CONFIGURATIONALTITUDE SELECTED VNAV MODE OPER/ARMEDMACH SELECTED G/S MODE OPER
LEFT SHUTOFF VALVE
IAS/MACH TOGGLE V/S MODE OPER
ECS PACK R HI/LO
FLT DIR ON (2) THROTTLE RETARD
A/P CMD ENGA (3) STAB POSITION
ISOLATION VALVE
PITCH SPEED CONTROL IAS SELECTEDRIGHT COWL ANTI-ICE
AFDS G/A OPER
ECS PACK R
A/T SERVO ARM - DISCRETE
R ECS BLEED CARD CONFIGURATIONMODE CONTROL PANEL
TACHOMETER (AC)
A/T A/S MODE REQ SELECTED AIRSPEED
A/T MACH MODE REQ SELECTED MACH
L A/T SERVOMOTOR GENERATOR
THRUST MODE REQ EPR TARGET
IDLE THRUST REQ ASSUMED TEMP
POWER LEVEL ANGLE
THROTTLE DORMANT THRUST LIMIT
MODE REQ (7)
L AND R POWER LEVEL ANGLE XDCRSLEFT AND RIGHT FLIGHT MANAGEMENT COMPUTERS DISENGAGE SWITCH (OPEN/GND)ALTITUDE (29.92) TOTAL AIR TEMP
DISENGAGE SWITCH (OPEN/28V DC)ALTITUDE (BARO #4) TOTAL PRESSURE
GO AROUND SWITCH
COMPUTED AIRSPEED TRUE AIRSPEED
THRUST LEVER ASSEMBLY (P10)
IMPACT PRESSURE PIT STATIC HEAT L
INDICATED AOA PIT STATIC HEAT R
MACH TAT HEAT
THRUST REVERSE SWITCH
STATIC AIR TEMP Vmo/Mmo
MICRO SWITCH PACK ASSYLEFT AND RIGHT AIR DATA COMPUTERS
AIR/GROUND
BODY NORMAL ACCEL PITCH ANGLE
BODY PITCH RATE ROLL ANGLE
SYSTEM NO. 1 AIR/GROUND RELAYBODY YAW RATE ALIGN FAULTFLIGHT PATH ACCEL NO IRS INITIALGROUND SPEED EXCESS MOTION ERRINERTIAL ALTITUDE ADC/IRU FAULTINERTIAL VERTICAL SPEED
LEFT AND RIGHT INERTIAL REFERENCE UNITS
LEFT AND RIGHT EICAS COMPUTERSTEST CONTROL WORDS (4)GROUND TEST - DISCRETEMAINTENANCE CONTROL AND DISPLAY PANEL THRUST MANAGEMENTCOMPUTER
TMC System Interface Inputs
Figure 2
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757 MAINTENANCE MANUAL
6) Left and Right Inertial Reference Units (IRUs)
7) Left and Right EICAS Computers
8) Left and Right Electronic Engine Controls (EEC)
(2) Analog Inputs
(a) Analog inputs to the TMC are: 1) TMSP sense voltage for the TMC voltage regulator. 2) Flap position from the Flap/Slat Electronic Unit (FSEU). 3) Tachometer feedback from the servomotor generator and power
lever angle from the autothrottle power lever angle transducers (L and R).
(3) Analog Discrete Inputs
(a) Analog discrete inputs to the TMC are: 1) A/T servo ARM from the MCP 2) In-air from air/ground relay 3) Ground test from the MCDP 4) Bleed discretes from the left and right ECS bleed
configuration cards 5) Thrust reverse and A/T disconnect from respective switches 6) A/T disconnect reset and go around from respective switches
J. TMC Program Pin Data (Fig. 3)
(1)
The TMC is designed to accomodate various airplane, engine, and customer selectable operational options. This is done by loading the computer with appropriate software and connecting designated external program pins as shown in Fig. 3. The hardwired pins establish the binary codes for software control.
(2)
Engine Airframe and Thrust Limit Options
(a) Pin connections for the engine airframe options are open/ground. Thrust limit options are 28 vdc/ground. A parity pin is provided.
(3)
Autothrottle and Aircraft Options
(a) Pin connections for autothrottle options are 28 vdc/ground. Aircraft options are open/ground. A parity pin is provided.
(4)
Customer Option
(a) Pin connections are open/ground for customer options. There is no parity pin. If a ground is lost, that option is also lost.
K. TMC/System Interface Outputs (Fig. 4)
(1)
Digital Data Buses
(a) One digital data bus is supplied for EICAS, MCDP and DFDAU outputs. There are two output buses for EFIS, FMC, and MCP signals. One bus contains MCP, left FMC; and left and center symbol generator signals. The other bus contains MCP, right FMC, and right symbol generator signals. 中國(guó)航空網(wǎng) www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：757 AMM 飛機(jī)維護(hù)手冊(cè) 自動(dòng)飛行 AUTOFLIGHT 2(104)
