S 285-232
(32)
Make sure that the YAW DAMPER-L INOP light, on YAW DAMPER Control Panel, is off.
S 285-392
(33)
Make sure that the "R YAW DAMPER" message is shown on the Upper EICAS Display.
S 985-233
(34)
Stop for 2 seconds and then push the DISPLAY switch on the Left YAW DAMPER MODULE.
S 285-234
(35)
Make sure that this message is shown on the Left YAW DAMPER MODULE fault display:
(a) AIRGND 2
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S 285-235
(36)
Make sure that the "YAW DAMPER" message is shown on the Lower EICAS Display - Maintenance Page.
S 865-236
(37)
Open this circuit breaker on the P11 panel:
(a) 11C30, LANDING GEAR POS SYS 1
S 985-237
(38)
Stop for 10 seconds and then push the DISPLAY switch on the Left YAW DAMPER MODULE.
S 285-238
(39)
Make sure that these fault messages are not shown on the Left YAW DAMPER MODULE Fault Display:
(a)
AIRGND 1
(b)
AIRGND 1/2
(c)
AIRGND 2
S 865-239
(40) Close these circuit breakers on the P11 panel:
(a)
11F34, YAW DAMPER RIGHT
(b)
11G17, CSEU 1R AC
or
FLT CONT ELEC 1R AC
(c)
11G27, CSEU 2R AC
or
FLT CONT ELEC 2R AC
(d)
11S19, AIR/GND SYS 2
S 985-240
(41)
Stop for a minimum of 2 seconds and then push the DISPLAY switch on the Left YAW DAMPER MODULE.
S 285-241
(42)
Make sure that this message is shown on the Left YAW DAMPER MODULE fault display:
(a) AIRGND 1
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757 MAINTENANCE MANUAL
S 985-242
(43)
Push the DISPLAY switch on the Right YAW DAMPER MODULE.
S 285-243
(44)
Make sure that this fault message is displayed on the RIght YAW DAMPER MODULE Fault Display:
(a) AIRGND 1
S 865-244
(45) Open this circuit breaker on the P11 panel:
(a) 11S19, AIR/GND SYS 2
S 985-246
(46)
Stop for a minimum of 10 seconds and then then push the DISPLAY switch on the Left YAW DAMPER MODULE.
S 285-245
(47)
Make sure that these fault messages are not shown on the Left YAW DAMPER MODULE Fault Display:
(a)
AIRGND 1
(b)
AIRGND 1/2
(c)
AIRGND 2
S 865-373
(48)
Push the DISPLAY button on the Right YAW DAMPER MODULE.
S 285-393
(49)
Make sure that these fault messages are not shown on the Right YAW DAMPER MODULE Fault Display:
(a)
AIRGND 1
(b)
AIRGND 1/2
(c)
AIRGND 2
S 865-247
(50) Close these circuit breakers on the P11 panel:
(a) 11C30, LANDING GEAR POS SYS 1
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757 MAINTENANCE MANUAL
(b) 11S19, AIR/GND SYS 2
S 865-354
(51) Put the safety sensitive systems back to their initial conditions (Ref 32-09-02/201).
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