D.
The trouble shooting charts that follow are in a tree-type format to aid in rapid fault isolation. Each chart begins with a description of the failure condition indicated on the face of either autoslat computer. In cases where both computers indicate a fault, first isolate the fault in one system and then the other.
E.
When a test step does not check out, follow the box containing the trouble symptom. Continue to follow a single line by analyzing the results of each test step until the required corrective action is determined. Perform the specified corrective action, then repeat the step at which the failure was encountered and complete the test to check the system.
F.
All trouble shooting procedures are based on the assumption that wiring is OK and that electrical power is available. If the corrective action in the procedure does not correct the problem, check wiring using the wiring diagram.
2. Prepare for Trouble Shooting____________________________
A. Open the circuit breakers that follow:
CIRCUIT LOAD
BREAKER CONTROL
_______NAME CENTER
LEFT ALPHA VANE HEATER P18 RIGHT ALPHA VANE HEATER P18
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH AUTOSLAT ú
27-83-00
COMPUTER P/N 65-52818 ú CONFIG 1 ú 01 Page 101 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
WARNING: MAKE SURE THE VANE HEATERS ARE NOT ON BEFORE YOU TOUCH THE
_______
ANGLE-OF-AIRFLOW VANES OR SERIOUS BURNS CAN OCCUR.
3. Trouble Shoot the Leading Edge Autoslat System
______________________________________________
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27-83-00
COMPUTER P/N 65-52818 ú CONFIG 1 ú 01 Page 102 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
Alpha COMPARE HI or alpha COMPARE LO light on either autoslat computer illuminated.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH AUTOSLAT ú
27-83-00
COMPUTER P/N 65-52818 ú CONFIG 1 ú 02 Page 103 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
SELF MONITOR light on autoslat computer No. 1 illuminated.
OK - Do the following test: Angle of (AMM 22-11-38/501) to check the AOA Sensor. Does the sensor pass the test? Airflow Sensor - Adjustment/Test
No. 1 and test (AMM 27-83-11/401). OK - Replace autoslat computer
NOT OK - Replace the AOA sensor AMM 27-32-11/401.
SELF MONITOR light on autoslat computer No. 2 illuminated.
(AMM 22-11-38/501) to check the AOA Sensor. Does the sensor pass the test? Airflow Sensor - Adjustment/Test OK - Do the following test: Angle of
OK - Replace autoslat computer No. 2 and test (AMM 27-83-11/401).
NOT OK - Replace autoslat valve sole-noid AMM 27-83-31/401.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH AUTOSLAT ú
27-83-00
COMPUTER P/N 65-52818 ú CONFIG 1 ú 01 Page 104 ú Nov 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
POWER OK light on autoslat computer No. 1 not illuminated.
OK - Check for 28 vdc between connector D3184B pin 3 and ground. IF -
OK - Replace autoslat computer No. 1 and test (Ref 27-83-11).
POWER OK light on autoslat computer No. 2 not illuminated.
OK - Check for 28 vdc between connector D3186B pin 3 and ground. IF -
and test (Ref 27-83-11). OK - Replace autoslat computer No. 2 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：737-300 400 500 AMM 飛機維護手冊 飛行操縱 FLIGHT CONTROLS 6(114)
