(f)
Move the EICAS computer select switch on the P9 panel to R.

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757
MAINTENANCE MANUAL

 (g)  
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.

 (h)  
Move the EICAS computer select switch back to AUTO.

 S 865-374
 (48)
 Move the captain's right pedal back to its neutral position.

 S 865-373

 (49)
 Move the RUDDER DISPLACEMENT switches to OFF on the two yaw damper module simulators and do this step:

 (a)  
Stop for 20 seconds.

 S 215-375
 (50)
 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 825-376
 (51)
 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 215-377
 (52)
 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 865-378
 (53)
 Open this circuit breaker on the P11 panel and attach a DO-NOT-CLOSE tag:

 (a)  
11J10, PCU MON SENSOR

 S 035-379
 (54)
 Disconnect the connectors D4710 and D4714 from the test box at the top and middle PCAs.

 (55)
 Connect the connectors D4710 and D4714 to the top and middle PCAs.

 S 435-380
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757 MAINTENANCE MANUAL
 S 865-381
 (56)
 Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P11 panel:

 (a)
11J10, PCU MON SENSOR

 S 025-382
 (57)
 Remove the two yaw damper module simulators.

 P.
PCA Sensor - Test

 (1)  S 015-263Open access panel 324CL (AMM 06-42-00/201).
 (2)  S 425-621Install the two yaw damper module simulators.
 (3)  S 035-264Disconnect connectors D4710, D4714, and D4712 from the top, middle, and bottom rudder PCAs.
 (4)  S 215-265Do these steps to make sure a RUDDER PCU message comes into view on the EICAS status and maintenance pages: (a) Push the STATUS switch on the P9 panel and do this check: 1) Make sure a 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 a RUDDER PCU message comes into view on the bottom EICAS display.
 (5)  S 435-266Connect PCA sensor connectors D4710, D4714, and D4712 to the test box.
 (6)  S 825-267Do these steps to erase the EICAS memory: (a) Push the ECS/MSG switch, then the AUTO EVENT switch on the P61 panel.

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 27-21-00
　
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