31-26-00
 ALL  ú ú 01 Page 103 ú Mar 15/94 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 737-300/400/500MAINTENANCE MANUAL 
TROUBLE SYMPTOM  PROBABLE CAUSE  CORRECTIVE PROCEDURE  
. . takeoff position. speed brakes are in the The stabilizer, flaps and more than 33` above idle The thrust levers are set conditions occur: from the horn when all of these You hear an intermittent sound . . takeoff position. speed brakes are in the The stabilizer, flaps and more than 33` above idle The thrust levers are not set conditions occur: from the horn when all of these You hear an intermittent sound . The No. 2 thrust lever is set more than 33` above idle The stabilizer, flaps and speed brakes are not in the takeoff position. . You do not hear an intermittent sound from the horn when all of these conditions occur:  A failure in the A failure in the failure in the horn horn circuit or a control input to the A failure in the thrust lever switch or circuit circuit warning switch  paragraph 8. paragraph 7. Do the procedure in Do the procedure in Do the procedure in paragraph 6. 
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 31-26-00
 ALL  ú ú 01 Page 104 ú Mar 15/94 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 
737-300/400/500MAINTENANCE MANUAL 
3.  ______________________________________________________Flap/Landing Gear Fault Isolation/Corrective Procedure
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 31-26-00
 ALL  ú ú 01 Page 105 ú Mar 15/94 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 
737-300/400/500MAINTENANCE MANUAL 
4. Thrust Lever/Landing Gear Fault Isolation/Corrective Procedure
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 31-26-00
 ALL  ú ú 01 Page 106 ú Mar 15/94 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 
737-300/400/500MAINTENANCE MANUAL 
5. Engine No. 1 Thrust Lever Logic Fault Isolation/Corrective Procedure
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 31-26-00
 ALL  ú ú 01 Page 107 ú Mar 15/94 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 
737-300/400/500MAINTENANCE MANUAL 
6. 
Engine No. 2 Thrust Lever Fault Isolation/Corrective Procedure
7. 
Horn Circuit Fault Isolation/Corrective Procedure
YOU HEAR THE HORN - Replace the aural warning logic card, M989 (Ref 32-09-2X/ 401). If the problem continues, replace the aural warning device unit, M315 (WDM 31-26-01). 
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 31-26-00
 ALL  ú 
 ú  01  Page 108 
 ú  Mar 15/94 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 
737-300/400/500MAINTENANCE MANUAL 
8. Warning Switch Fault Isolation/Corrective Procedure
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH PARKING BRAKE WARNING ú
 31-26-00
 ú ú 01 Page 109 ú Jul 15/97 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 
737-300/400/500MAINTENANCE MANUAL 
8. Warning Switch Fault Isolation/Corrective Procedure
 
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址:737-300 400 500 AMM 飞机维护手册 仪表 INSTRUMENTS(129)