757 MAINTENANCE MANUAL
S 865-178
(7) Open this circuit breaker on the P11 panel:
(a) 11G18, CSEU 1R DC
or
FLT CONT ELEC 1R DC
S 285-179
(8)
Make sure that the YAW DAMPER INOP R light is on.
S 865-180
(9)
Close this circuit breaker on the P11 panel:
(a) 11G28, CSEU 2R DC
or
FLT CONT ELEC 2R DC
S 285-181
(10) Make sure that the YAW DAMPER INOP R light is off.
S 845-361
WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILER PANELS. THE SPOILERS CAN RETRACT QUICKLY AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(11)
Do the deactivation procedure for the spoilers (Ref 27-61-00) or move all persons and equipment away from the spoiler panels.
S 865-182
(12)
Close this circuit breaker on the P11 panel:
(a) 11G18, CSEU 1R DC
or
FLT CONT ELEC 1R DC
S 865-183
(13) Open these circuit breakers on the P11 panel:
(a) 11C7, CSEU 1L DC
or
FLT CONT ELEC 1L DC
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757 MAINTENANCE MANUAL
(b) 11C9, CSEU 2L DC
or
FLT CONT ELEC 2L DC
S 285-184
(14)
Make sure that the YAW DAMPER INOP L light is on.
S 865-185
(15)
Close this circuit breaker on the P11 panel:
(a) 11C9, CSEU 2L DC
or
FLT CONT ELEC 2L DC
S 285-372
(16) Make sure that the YAW DAMPER INOP L light is off
S 845-362
WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILER PANELS. THE SPOILERS CAN RETRACT QUICKLY AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(17)
Do the deactivation procedure for the spoilers (Ref 27-61-00) or move all persons and equipment away from the spoiler panels.
S 865-187
(18)
Open this circuit breaker on the P11 panel:
(a) 11C9, CSEU 2L DC
or
FLT CONT ELEC 2L DC
(19)
Make sure that the YAW DAMPER INOP L light is on.
S 865-189
(20)
Close this circuit breaker on the P11 panel:
S 285-188
(a) 11C7, CSEU 1L DC
or
FLT CONT ELEC 1L DC
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757 MAINTENANCE MANUAL
S 285-190
(21)
Make sure that the YAW DAMPER INOP L light is off.
S 865-191
(22)
Close this circuit breaker on the P11 panel:
(a) 11C9, CSEU 2L DC
or
FLT CONT ELEC 2L DC
H. Yaw Damper Engage Test
S 865-192
(1) Open this circuit breaker on the P11 panel:
(a) 11A18, YAW DAMPER LEFT
S 985-193
(2)
Put the EICAS computer select switch, on the pilots EICAS DISPLAY SELECT PANEL, in the L position.
S 285-194
(3)
Make sure that the YAW DAMPER INOP L light is on, and that the yellow L YAW DAMPER message is showm on the upper EICAS display.
S 985-195
(4)
Put the EICAS computer select switch in the R position.
S 285-196
(5)
Make sure that the upper EICAS display shows the L YAW DAMPER message in yellow.
S 865-197
(6)
Close this circuit breaker on the P11 panel:
(a) 11A18, YAW DAMPER LEFT
S 985-198
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