(a)
Push the STATUS switch on the P9 panel and do this check:

 1)  Make sure no RUDDER PCU message comes into view on the bottom EICAS display.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-00
 ALL  ú ú 09 Page 576 ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 (b) Push the ECS/MSG switch on the P61 panel and do this check:
 1)  Make sure no RUDDER PCU message comes into view on the bottom EICAS display.
 S 225-232
 (19)
 Move the captain's left pedal to its full forward position (slowly) and do these steps:

 (a)  
Move the RUDDER DISPLACEMENT switches to LEFT on the two yaw damper module simulators and do this check:

 (b)  
Make sure the rudder trailing edge moves to the left at least

 44.6 inches (1.13 m) (33.0 degrees).
 (c)  Do these steps to make sure a RUDDER PCU message comes into view on the EICAS status and maintenance pages: 1) Push the STATUS switch on the P9 panel and do this check:
 a)  Make sure a RUDDER PCU message comes into view on the bottom EICAS display. 2) Push the ECS/MSG switch on the P61 panel and do this check: a) Make sure a RUDDER PCU message comes into view on the bottom EICAS display.
 S 865-233
 (20)
 Move the captain's left pedal back to its neutral position and do this step:

 (a)  
Stop for 20 seconds.

 S 825-234
 (21)
 Do these steps to erase the EICAS memory:

 (a)  
Push the ECS/MSG switch, then the AUTO EVENT switch on the P61 panel.

 (b)  
Push the erase switch for 3 seconds to erase the EICAS maintenance memory.

 S 215-235
 (22)
 Do these steps to make sure no RUDDER PCU messages stay on the EICAS status and maintenance pages:

 (a)
Push the STATUS switch on the P9 panel and do this check:

 1)  Make sure no RUDDER PCU message comes into view on the bottom EICAS display.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-00
 ALL  ú ú 05 Page 577 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 (b)  Push the ECS/MSG switch on the P61 panel and do this check:
 1)  Make sure no RUDDER PCU message comes into view on the bottom EICAS display.
 S 865-236
 (23)
 Move the RUDDER DISPLACEMENT switches to OFF on the two yaw damper module simulators.

 S 025-237

 (24)
 Remove the two yaw damper module simulators.

 S 425-238

 (25)
 Install the two yaw damper modules (M522 and M523)
 (AMM 22-21-04/401).

 O.  
PCA Pressure Differential Sensor Isolation Test

 S 865-330
 WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN
_______ HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
 (1)  Supply pressure to the left, right, and center hydraulic systems (AMM 29-11-00/201).
 S 045-331
 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILERS. THE SPOILERS CAN RETRACAT QUICKLY AND CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  Do the deactivation procedure for the spoilers (AMM 27-61-00/201) or move all persons and equipment away from the spoilers.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-00
 ALL  ú ú 09 Page 578 ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
　
中國航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：757 AMM 飛機維護手冊 飛行操縱 FLIGHT CONTROLS 2(28)