757 AMM 飞机维护手册 自动飞行 AUTOFLIGHT 2(172)

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 c)  Tests operation of captain's and first officer's MCP flight director switches and the ability of FCCs to move the pitch command bar 10 degrees. Checks each valid FCC separately.
60 TMC INSTR
 a)  Displays any TMC self-test faults.
 b)  Sends test routine number and parameters to TMC and displays operator action message.
 c)  Tests the ability of the TMC to control the captain's and first officer's EPR instruments target index. EPR target index driven to a test value of 1.50.
64 SPD BK/FLAP XDCR
 a)  Displays any TMC and FCC self-test faults and FLAP XDCR related interface faults.
 b)  Displays a VFY HYD ON message.
 c)  Provides interaction messages to check the FCCs sensing of the speedbrakes down, armed, and up.
 d)  Displays action messages to set flap lever to 25, 15, and 1.
 e)  Tests operation of flap position sensing transducer, and switch/transducer-to-FCC and TMC interfaces. The flap switch and flap transducer operation is checked when the flap lever is positioned to 30, 10, and 0 units.
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MAINTENANCE MANUAL

 8)  65 STAB TRIM a) Displays any FCC self-test faults and FCC interface
 faults related to stab trim. b) Provides action message VFY HYD ON. c) Tests the ability of the FCC to command the Stabilizer
 Trim/Elevator Asymmetry Limit Module (SAM) to drive the horizontal stabilizer UP and DOWN. It checks the FCC-to-SAM interface.
 9)  66 XDCR OUTPUTS
 a)  Displays any FCC and TMC self-test faults, and transducer interface faults related to the transducers.
 b)  GUN 051; displays position of horizontal stabilizer, aileron servo, aileron surface, elevator servo, elevator surface, rudder servo, rudder surface, and flaps to the FCC and TMC. It tests and displays the left and right power lever angle position sent to the TMC.
 c)  GUN 001-050, 052-999; tests and displays the force on left and right control column and control wheel. Displays position of horizontal stabilizer, aileron servo, aileron surface, elevator servo, elevator surface, rudder servo, rudder surface, and flaps to the FCC and TMC. It tests and displays the left and right power lever angle position sent to the TMC.
 10) 67 AIL SURF LIMIT a) Displays any FCC self-test faults and FCC interface faults related to aileron servo. b) Provides action messages VFY HYD ON and A/P ENG LCR TO CMD (for valid FCCs only) (LCR = Left, Center, Right). c) Drives aileron to its positive limit if operator responds YES/ADV to action message AIL POS LIM? d) Displays aileron surface position in degress. AIL SURF DEG |XX.X |XX.XX |XX.XX where XX.X = decimal number 11) 68 ELEV SURF LIM a) Elevator Surface limit test same as aileron limit test. 12) 69 RUD SURF LIM a) Rudder surface limit test same as aileron limit test.
 (17) Ground Test - LRU - 04 MCP (Fig. 17)
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757 MAINTENANCE MANUAL
MCP SWITCH/LIGHTS MCP SWITCH/LIGHTS

STEP MCDP TEST REQUIREMENT  ACTION/INFORMATIVE MESSAGE  FAIL MESSAGE 
PROGRESS BIT CHANGES FROM 1 TO 0 OR 6. PROVIDE ACTION MESSAGE AND ADVANCE AUTOMATICALLY WHEN IN AND ALL FAULTS DISPLAYED NEXT STEP AUTOMATICALLY FOR NO INTERFACE FAULTS OR WHEN FAULTS DISPLAYED STEP AUTOMATICALLY FOR NO COMPUTER FAULTS OR WHEN ALL 1. PROVIDE TEST ARMED MESSAGE 2. DISPLAY ALL FAULTED FCC'S SEQUENTIALLY. ADVANCE TO NEXT 3. DISPLAY MCP INTERFACE FAULTS SEQUENTIALLY. ADVANCE TO 4. PROVIDE ACTION MESSAGE 5. PROVIDE ACTION MESSAGE AND VERIFY BARO SWITCH L/R LIGHTS  LIGHTS - ADV L/R LIGHTS - ADV 04 MCP TEST? 04 IN PROGRESS 04 IN PROGRESS 04 MCP MAN TEST? 04 PUSH BARO-VFY 04 PUSH OFF MCP  MCP A/P ENG DISC 04 FCC # FAIL A/P DISC MCP BUS IN MCP A/P ARM IN TMC BUS IN 1 FCC TO MCP BUS 

ADVANCE TO NEXT STEP FOR YES/ADV

NO MESSAGE PROVIDED
# DENOTES L, R, OR C COMPUTER
Ground Test - LRU-04 MCP (Steps 1-6)
Figure 17 (Sheet 1)

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