757 AMM 飞机维护手册 自动飞行 AUTOFLIGHT 1(48)

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____ failure when it went into GRD TEST MODE. The MCDP shows FCC interface faults related to autoland. The ILS Tune and RA Test inhibit functions are tested for a "not inhibited" condition and for an "inhibited" condition when inhibit is asked for. Fault messages for either failed condition will show. If the FCC R/MCDP interface is inactive, the MCDP shows that the bus isolation test cannot be done. The MCDP then tells the person to make sure the standby power is in the AUTO position, the battery switch is on, and the left bus tie is in the AUTO position. An advisory message shows that the EICAS display will not be on during the bus isolation test and the person pushes the YES/ADV switch. The remaining tests use parts of other ground tests to do a check of the autoland related functions. Autoland autothrottle test is done after the autoland servo test. After the start of the autoland autothrottle test, the MCDP shows TMC FAIL if the TMC had a self-test failure when it went into GRD TEST MODE. If no TMC FAIL message shows, the MCDP shows all TMC interface faults. The MCDP then does the autothrottle servo test and the go-around switch test.
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757
MAINTENANCE MANUAL

 S 862-111
 (10) Do these steps to clear the EICAS maintenance message(s) "STAB TRIM" and/or YAW DAMPER" that can show after the Autoland Bus Isolation Test is done:
 WARNING: BE CAREFUL WHEN YOU OPEN THESE CIRCUIT BREAKERS.
_______ ACCIDENTAL SPOILER MOVEMENT CAN OCCUR WHEN THESE CIRCUIT BREAKERS ARE OPENED. INJURY TO PERSONS CAN OCCUR.
 (a)  Open these circuit breakers on the P11 panel and then close them in less than 25 seconds: 1) 11C6, CSEU 1L AC
 or
 FLT CONT ELEC 1L AC
 2) 11C8, CSEU 2L AC
 or
 FLT CONT ELEC 2L AC
 3) 11G17, CSEU 1R AC
 or
 FLT CONT ELEC 1R AC
 4) 11G27, CSEU 2R AC
 or
 FLT CONT ELEC 2R AC
 5) 11G27, FLT CONT ELEC 2R AC
 (b)  If a faultball stays set to yellow on a Stabilizer Trim/Elevator Asymmetry Limit Module (SAM) and/or a Yaw Damper Module (YDM) after the above circuit breakers have been opened and closed, push the reset switch on the front of the SAM.
 S 862-112
 (11) Put the airplane back to its usual condition if no other ground
 tests are necessary. AB. 51 AIR/GRD RLY
 S 862-113
 (1)  Do the "Prepare to Test" steps.
 S 862-114
 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILERS. THE SPOILERS CAN RETRACT QUICKLY AND CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT
 (2)  Do the deactivation procedure for the spoilers (Ref 27-61-00) or move all persons and equipment away from the spoilers.
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757 MAINTENANCE MANUAL
 S 742-115
 (3)  Do MCDP test 51.
 NOTE: The MCDP shows FCC # and TMC FAIL for each FCC and TMC that
____ had a self-test failure when it went into GRD TEST MODE. The MCDP then tells a person to to open and close the air/ground circuit breakers to test the FCC and the TMC reply to air/ground relay operation. MCDP messages C/B LAND GEAR SYST 1 and C/B LAND GEAR SYST 2 refer to 11S15, AIR/GND SYS 1, and 11S19, AIR/GND SYS 2, 11C19, LANDING GEAR POS SYS 2 ALTN, C/Bs on panel P11.
 S 862-115
 (4) Put the airplane back to its usual condition if no other ground
 tests are necessary. AC. 52 TMC RLY/SW
 S 842-178
 (1)  Test 52 can be done by one of these two procedures.
 (a)  
Procedure 1 uses the TEST HI and TEST LO switches on the left (M1033) and right M10312 ECS cards in the P50 panel to supply the high and low inputs. This procedure does a check of the ECS cards and their outputs to the TMC without pneumatic power.

 (b)  
Procedure 2 uses the control switches on the overhead P5 panel to supply the high and low inputs to the ECS cards. This procedure does a check of the complete ECS system and needs pneumatic power.
　
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