(a)  11C6,  CSEU 1L AC
 or
 FLT CONT ELEC 1L AC
 (b)  11C8,  CSEU 2L AC
 or
 FLT CONT ELEC 2L AC
 (c)  11G17, CSEU 1R AC
 or
 FLT CONT ELEC 1R AC
 (d)  11G27, CSEU 2R AC
 or
 FLT CONT ELEC 2R AC

 S 285-149
 (4)  
Make sure that the YAW DAMPER INOP (L, R) lights on the overhead panel, P5, come on momentarily yellow and then go off within 30 seconds.

 S 985-150

 (5)  
Push the RESET button on the left and right yaw damper modules.

 S 285-151

 (6)  
Stop for a minimum of 30 seconds then make sure that the YAW DAMPER INOP L, R lights are off.

 S 985-152

 (7)  
Push the DISPLAY button on the left YAW DAMPER module.

 S 285-153

 (8)  
Make sure the the message NO FAULT is shown on the left YAW DAMPER module fault display.

 S 985-154

 (9)  
Push the DISPLAY button on the right YAW DAMPER module.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
 S 285-155
 (10) Make sure that the message NO FAULTS is shown on the right YAW DAMPER module fault display.
 F. Power Supply Interface Test
 S 845-355
 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.
 (1)
Do the deactivation procedure for the spoilers (Ref 27-61-00) or move all persons and equipment away from the spoiler panels.

 S 865-371

 (2)  
Open these circuit breakers on the P11 panel:

 (a)  
11G17, CSEU 1R AC
 or
 FLT CONT ELEC 1R AC

 (b)  
11G27, CSEU 2R AC
 or
 FLT CONT ELEC 2R AC

 S 285-156
 (3)  
Make sure the YAW DAMPER INOP R light is on.

 S 865-157

 (4)  
Close this circuit breaker on the P11 panel:

 (a)  11G27, CSEU 2R AC
 or
 FLT CONT ELEC 2R AC

 S 285-158
 (5)  Stop for a minimum of 20 seconds then make sure that the YAW DAMPER INOP R light is off.
 S 845-356
 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.
 (6) Do the deactivation procedure for the spoilers (Ref 27-61-00) or move all persons and equipment away from the spoiler panels.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 22-21-00
 ALL  ú ú 03 Page 523 ú Sep 20/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 865-159
 (7) Open this circuit breaker on the P11 panel:
 (a)  11G27, CSEU 2R AC
 or
 FLT CONT ELEC 2R AC

 S 285-160
 (8)
Make sure that the YAW DAMPER INOP R light is on.

 S 865-161

 (9)
Close this circuit breaker on the P11 panel:

 (a)  11G17, CSEU 1R AC
 or
 FLT CONT ELEC 1R AC

 S 285-162
 (10) Stop for a minimum of 20 seconds then make sure that the YAW DAMPER INOP R light is off.
 S 845-357
 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 865-163

 (12)
 Close this circuit breaker on the P11 panel:

　
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