(d)
11S18, ANTI-SKID 1-5
(e)
11S21, AUTOBK ANTISKID TEST IND 2
(f)
11S22, ANTI-SKID 4-8
S 714-028
(4)
Do the test that follows to make sure that the Antiskid/Autobrake Control Unit operates properly:
(a)
Prepare for the test. 1) Supply electrical power (AMM 24-22-00/201). 2) Put chocks on the wheels. 3) Release the parking brake. 4) Pressurize the right hydraulic system and reservoir
(AMM 29-11-00/201). 5) Put the thrust levers in the idle position. 6) Retract the spoilers. 7) Put the L, R, and C IRU's in the NAV mode
(AMM 34-21-00/501).
NOTE: The IRU's must be aligned.
____
(b) Do the test. 1) Push in the RESET button on the control unit and wait 5 |3
seconds. Make sure that the unit display shows MEM CLR. 2) Put the AUTOBRAKES selector switch in position 1. 3) Push in the ENABLE/VERIFY switch and hold, and then push in
the VERIFY switch and release both of them at the same time. 4) Make sure that you have the indications that follow: a) The control unit display flashes WAIT four times and
shows TEST END after 15 |5 seconds. b) The AUTOBRAKES selector switch disarms. c) The AUTOBRAKES message shows on the EICAS and the
AUTOBRAKES light on the P1 panel comes on. 5) Put the AUTOBRAKES selector switch in the OFF position. 6) Make sure that the ANTISKID/AUTOBRK message on the EICAS
maintenance page is not on. 7) Push in the RESET button on the control unit. 8) Put the L, R and C IRU's to the OFF position..
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S 944-064
(5) Put the airplane back to its usual condition (Ref Par. 6).
TASK 32-42-01-004-052
4. Antiskid/Autobrake Control Unit Circuit Card - Removal (Fig. 401)______________________________________________________
A. Procedure
S 024-053
(1)
Remove the Antiskid/Autobrake Control Unit (Ref Par. 2).
S 034-054
(2)
Remove the top cover of the unit to get access to the card.
S 914-055
CAUTION: DO NOT TOUCH THE ANTISKID/AUTOBRAKE CONTROL UNIT BEFORE YOU DO
_______ THE PROCEDURE FOR DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE ANTISKID/AUTOBRAKE CONTROL UNIT.
(3)
Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-01/201).
S 024-056
(4)
Remove the circuit card or cards that need to be replaced.
TASK 32-42-01-424-057
5. Antiskid/Autobrake Control Unit Circuit Card - Installation (Fig. 401)___________________________________________________________
A. References
(1)
AMM 20-10-01/401, E/E Rack-Mounted Components
(2)
AMM 20-41-01/201, Electrostatic Sensitive Devices
(3)
AMM 24-22-00/201, Electrical Power - Control
(4)
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic Systems
(5)
AMM 34-21-00/501, Inertial Reference System
B.
Access
(1)
Location Zones
211 Control Cabin, Left
212 Control Cabin, Right
821 Forward Cargo Door
C.
Procedure
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S 914-058
CAUTION: DO NOT TOUCH THE ANTISKID/AUTOBRAKE CONTROL UNIT BEFORE YOU DO
_______ THE PROCEDURE FOR DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE ANTISKID/AUTOBRAKE CONTROL UNIT.
(1)
Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-01/201).
S 424-059
(2)
Install the card or cards in the control unit in the correct location.
S 414-060
(3)
Install the cover on the control unit.
S 424-061
(4)
Install the Antiskid/Autobrake Control Unit (Ref Par. 3)
S 944-063
(5)
Put the airplane back to its usual comdition (Ref Par. 6).
TASK 32-42-01-944-029
6. Put the Airplane Back To Its Usual Condition_____________________________________________
A. Procedure
S 864-030
(1)
Set the parking brakes.
S 864-031
(2) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 3(24)
