S 865-092
(17)
Close these circuit breakers on the P11 panel:
(a)
11A18, YAW DAMPER LEFT
(b)
11C6, FLT CONT ELEC 1L AC
(c)
11C8, FLT CONT ELEC 2L AC
S 865-093
(18) Open these circuit breakers on the P11 panel:
(a)
11F34, YAW DAMPER RIGHT
(b)
11G17, FLT CONT ELEC 1R AC
(c)
11G27, FLT CONT ELEC 2R AC
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S 865-094
(19) Close this circuit breaker on the P11 panel:
(a) 11C30, LANDING GEAR POS SYS 1
S 285-095
(20)
Make sure that the YAW DAMPER INOP L light on P5 panel is off.
S 285-096
(21)
Stop for a minimum of 2 seconds then make sure that the AIR/GRD faultball on the left yaw damper module is yellow.
S 285-097
(22)
Make sure that the YAW DAMPER maintenance message is shown on the lower EICAS display.
S 865-098
(23)
Open this circuit breaker on the P11 panel and attach a DO-NOT-CLOSE tag:
(a) 11C30, LANDING GEAR POS SYS 1
S 285-099
(24)
Stop for a minimum of 10 seconds then make sure that the AIR/GRD faultball on the left yaw damper module is black and the YAW DAMPER maintenance message is not shown.
S 865-100
(25)
Close these circuit breakers on the P11 panel:
(a)
11F34, YAW DAMPER RIGHT
(b)
11G17, FLT CONT 1R AC
(c)
11G27, FLT CONT 2R AC
(d)
11S19, AIR/GND SYS 2
S 285-101
(26) Stop for a minimum of 2 seconds then make sure that the AIR/GRD faultball on the left and right yaw damper modules are yellow.
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S 865-102
(27) Open this circuit breaker on the P11 panel:
(a) 11S19, AIR/GND SYS 2
S 285-103
(28)
Stop for a minimum of 10 seconds then make sure that the AIR/GRD faultballs on the left and right yaw damper modules are black.
S 865-104
(29)
Close these circuit breakers on the P11 panel:
(a)
11C30, LANDING GEAR POS SYS 1
(b)
11S19, AIR/GND SYS 2
S 865-353
(30) Put the safety sensitive systems back to their initial conditions (Ref 32-09-02/201).
J. Hydraulic Interface Test
S 865-105
(1)
Remove the power from the left hydraulic system (Ref 29-11-00).
S 865-106
(2)
Stop for a minimum of 6 seconds then continue.
S 985-107
(3)
Put the YAW DMPR test switch on the P61 panel in the L position, then put the switch back to the center.
S 285-108
(4)
Make sure that the rudder position indicator on the lower EICAS display shows no rudder movement.
S 285-109
(5)
Stop for a minimum of 15 seconds then make sure that the YAW DAMPER INOP L light is on.
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(6) S 285-110Make sure that the left YDM HYD PRESS fault ball shows black and the YD ACT faultball shows yellow.
(7) S 985-111Push the left YAW DAMPER switchlight on the overhead panel, P5, twice to re-engage left system.
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