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| | AIR/GND | SMC 2 | Go to the GROUND TEST? menu on SMC 2 and select the| | INVALID | | DISCRETE INPUTS? menu. Go to the AIR/GND display.| | | | A. Push the AIR SENSING test switch on the E-11 shelf and| | | | make sure that the SMC display reads AIR GND AIR. If| | | | the display does not read AIR GND AIR, replace air| | | | sensing relay R280 (WDM 32-31-11).| | | | B. Push the GND SENSING test switch on the E-11 shelf and| | | | make sure that the SMC display reads AIR GND AIR. If| | | | the display does not read AIR GND AIR, replace ground| | | | sensing relay R343 (WDM 32-31-12).| | | | If the problem continues, check and repair circuit| | | | between connector D2596 pin 45 at the E-11 shelf and| | | | connector 2773B pin 31 at SMC 2 M1507; and check and| | | | repair circuit between connector D2794 pin 36 at the E-11| | | | shelf and connector 2773B pin 21 at SMC 2 M1507| | | | (WDM 27-32-22).| .................................................................................| | |
| | AOA #1 | SMC 1 | Slowly turn the left AOA sensor through its range of| | INACTIVE | | motion. If it does not turn freely, replace the left AOA| | | | sensor T433 (MM 27-32-11/401). If it does turn freely,| | | | check and repair circuit between connector D365 pins 4,| | | | 5, 6, 8, and 9 at the left AOA sensor T433 and connector| | | | D2771B pins 3, 23, 13, 30, and ground at SMC 1 M1506| | | | (WDM 27-32-11).| | | | If the problem continues, replace left AOA sensor T433| | | | (MM 27-32-11/401).| | | | | | | | | 2...........….......…...........................................................1
 STALL MANAGEMENT COMPUTER FAULT INDEX

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH STALL MANAGEMENT ú

 27-32-00
 COMPUTER P/N 65-52822  ú CONFIG 2 ú 02 Page 114 ú Mar 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
 ~............................................................................... | SMC FAULT | FROM | CORRECTIVE ACTION | .................................................................................| | |
| | AOA #2 | SMC 2 | Slowly turn the right AOA sensor through its range of| | INACTIVE | | motion. If it does not turn freely, replace right AOA| | | | sensor T437 (MM 27-32-11/401). If it does turn freely,| | | | check and repair circuit between connector D287 pins 4,| | | | 5, 6, 8, and 9 at the right AOA sensor T437 and connector| | | | D2773B pins 3, 23, 13, 30, and ground at SMC 2 M1507| | | | (WDM 27-32-21).| | | | If the problem continues, replace right AOA sensor T437| | | | (MM 27-32-11/401).| .................................................................................| | |
| | AOA #1 | SMC 1 | Check and repair circuit between connector D365 pins 4,| | INVALID | | 5, 6, 8, and 9 at the left AOA sensor T433 and connector| | | | D2771B pins 3, 23, 13, 30, and ground at SMC 1 M1506| | | | (WDM 27-32-11).| | | | If the problem continues, replace left AOA sensor T433| | | | (MM 27-32-11/401).| .................................................................................| | |
| | AOA #2 | SMC 2 | Check and repair circuit between connector D287 pins 4,| | INVALID | | 5, 6, 8, and 9 at the right AOA sensor T437 and connector| | | | D2773B pins 3, 23, 13, 30, and ground at SMC 2 M1507| | | | (WDM 27-32-21).| | | | If the problem continues, replace right AOA sensor T437| | | | (MM 27-32-11/401).| .................................................................................| | |
| | ASYMETRY | SMC 1 | Make sure that LE slats are fully retracted (the LE slats| | | | may have drooped if hydraulic power has been off). Open| | | | SMC STALL WARNING ASYM MODE circuit breaker C1208. If| | | | ASYMETRY is still displayed on the SMC, check and repair| | | | circuit between connector D728A pin 55 at the LE flaps| | | | and slats indication module M229 and connector S2771B pin| | | | 46 at the SMC 1 M1506 (WDM 27-32-12).| .................................................................................| | |
| | ASYMETRY | SMC 2 | Make sure that LE slats are fully retracted (the LE slats| | | | may have drooped if hydraulic power has been off). Open| | | | SMC STALL WARNING ASYM MODE circuit breaker C1208. If| | | | ASYMETRY is still displayed on the SMC, check and repair| | | | circuit between connector D728A pin 55 at the LE flaps| | | | and slats indication module M229 and connector S2773B pin| | | | 46 at the SMC 2 M1507 (WDM 27-32-22).| | | | | | | | | | | | | | | | | | | | | | | | | 2...........….......…...........................................................1
 STALL MANAGEMENT COMPUTER FAULT INDEX

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH STALL MANAGEMENT ú
　
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