S 865-384
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-00
 ALL  ú ú 10 Page 580E ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 215-386
 (36)
 Push the ECS/MSG switch on the P61 panel and do this step:

 (a)  
Make sure the white RUDDER PCU message comes into view on the bottom EICAS display.

 S 825-387
 (37)
 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 215-388
 (38)
 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.

 (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 865-363
 (39)
 Open this circuit breaker on the P11 panel and attach a DO-NOT-CLOSE tag:

 (a)  
11J10, PCU MON SENSOR

 S 035-364
 (40)
 Disconnect the connector D4712 from the test box at the bottom PCA.

 S 435-365

 (41)
 Connect the connector D4712 to the bottom PCA.

 (42)
 Disconnect the connector D4714 from the middle PCA.

 (43)
 Connect the connector D4714 to the test box.

 S 035-366
 S 435-367
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-00
 ALL  ú ú 10 Page 580F ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL

 S 865-368
 (44)
 Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P11 panel:

 (a)  
11J10, PCU MON SENSOR

 S 825-369
 (45)
 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 215-370
 (46)
 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.

 (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 225-372
 (47)
 Move the captain's right pedal to its full forward position (slowly) and do these steps:

 (a)  
Move the RUDDER DISPLACEMENT switches to RIGHT on the two yaw damper module simulators and do this check: 1) Make sure the rudder trailing edge moves to the right at

 least 44.6 inches (1.13 m) (33 degrees).

 (b)  
Move the EICAS computer select switch on the P9 panel to AUTO.

 (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.

 (d)  
Move the EICAS computer select switch on the P9 panel to L.

 (e)  
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.
　
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