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| | VANE #1 | SMC 1 | Perform SMC 1 AOA Sensor Input Test part of stall warning| | BENT | | system test (MM 27-32-00/501). If the test does not pass,| | | | replace the left AOA sensor T433 (MM 27-32-11/401).| .................................................................................| | |
| | VANE #2 | SMC 2 | Perform SMC 2 AOA Sensor Input Test part of stall warning| | BENT | | system test (MM 27-32-00/501). If the test does not pass,| | | | replace the right AOA sensor T437 (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 120 ú Mar 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 STALL WARNING SYSTEM - ADJUSTMENT/TEST
______________________________________
 1.  General_______
 A.  This subject has one task. The task is a system test of the stall warning system.
 TASK 27-32-00-735-014-001
 2.  Stall Warning System Test_________________________
 A.  General
_______
 (1)  
The Stall Warning System Test has these parts:

 (a)  
Preparation for Test

 (b)  
BITE Test

 (c)  
Stall Warning Operation Test

 (d)  
System Performance Test

 (e)  
Landing Gear Relay Test

 (f)  
Asymmetry Mode Test

 (g)  
High Thrust Mode Test

 (h)  
Speed Floor Test

 (2)  
Specific values of engine N1 and N2 are necessary for the High Thrust Mode Test. There are two alternative procedures to supply these N1 and N2 values:

 (a)  
The first procedure is to supply a signal which is equivalent to the output of the N1 and N2 tachometer sensors. These sensors are located on the engines. For this procedure, you will connect the stall warning system tester and two function generators at the electrical connectors of the engine N1 and N2 sensors. To change the N1 or the N2 value, you will change the frequency of the function generator output.

 (b)  
The second procedure is to supply a signal which is equivalent to the output of the N1 and N2 indicators. These indicators are located in the flight compartment. For this procedure, you will connect two variable dc power supplies at the electrical connectors of the N1 and N2 indicators. To change the N1 or the N2 value, you will change the dc voltage of the power supply output.

 B.  
Special Tools and Equipment

 (1)  
Portable Calibrator - F72786-181 (two are necessary)

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH DIGITAL STALL WARNING ú

 27-32-00
 COMPUTER P/N 65-52819  ú CONFIG 1 ú 01 Page 501 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 C.
D.
E.
A
737-300/400/500MAINTENANCE MANUAL
 (2)  Stall Warning System Tester - C77002-20
 NOTE: The Stall Warning System Tester is not necessary if you do
____ the High Thrust Mode Test with DC Power Supplies.
 (3)  Synthesizer/Function Generator - Wavetek Model 21 or Hewlett Packard Model 3325B or equivalent (two units are necessary)
 NOTE: The Synthesizer/Function Generators are not necessary if
____ you do the High Thrust Mode Test with DC Power Supplies.
 (4)  DC Power Supply, variable 0-5V dc. (two are necessary).
 NOTE: The DC Power Supplies are not necessary if you do the High
____ Thrust Mode Test with Stall Warning System Tester.
 (5)
Pitot/Static System Tester - 5 to 30 inches of mercury (absolute)References

 (1)  
24-22-00/201, Manual Control

 (2)  
27-81-00/201, Leading Edge Flaps and Slats

 (3)  
31-42-01/401, EIS Primary Display Panel

 (4)  
71-11-02/201, Fan Cowl Panels

 (5)
77-12-02/401, N1 and N2 Tachometer IndicatorsAccess

 (1)  Location Zone
　
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