27-88-00
ALL ú ú 02 Page 101 ú Nov 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
TROUBLE PROBABLE CAUSE ISOLATION PROCEDURE REMEDY
annunciator shows is on when leading in-transit surfaces overhead one or more retracted; edge surfaces are center panel light LE FLAPS TRANSIT is on when leading retracted all surfaces annunciator shows overhead retracted; LE FLAPS TRANSIT edge surfaces are center panel light module Failure in M229 Warning module M229 and Stall module lamp and M229 to ground between Short circuit to ground between Short circuit module Failure in M229 Stall Warning wiring switch, S856, or Open circuit in associated connector D728A, pin 55 to ground. If continuity Check continuity from M229, exists, S856, for an open circuit. between D728B, pin 50 and wiring and connectors If LE FLAPS TRANSIT light still remains on, check light and M229 module for and connectors between the P6-2 panel. If light circuit breaker, C211, on short circuit to ground. remains on, check wiring Open LE FLAP POSN IND-DC Check continuity from M229 exists, ground. If no continuity connector D728B, pin 50 to AMM 27-88-31/501. AMM 27-88-31/401, surface indicated circuit cards for module. Suspect A34 Stall Warning circuit cards A22, Repair or replace Comparator Logic; Warning module or Repair or replace repair wiring as module. Suspect annunciator. Replace M229 on overhead leading edge Logic. Replace M229 wiring as necessary. necessary. Flap and Slat necessary. wiring as Replace Stall S856, as given in Adjust or replace
Troubleshooting Chart
Figure 101 (Sheet 1)
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27-88-00
ALL ú ú 01 Page 102 ú Jul 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
TROUBLE PROBABLE CAUSE ISOLATION PROCEDURE REMEDY
extended. surfaces LE FLAPS TRANSIT retracted. edge slats are on when leading center panel light is on when leading one or more annunciator shows overhead retracted; edge surfaces are center panel light LE FLAPS TRANSIT connectors faulty wiring or A ground through switch Faulty slat-up module Failure in M229 (AMM 27-81-45/401). is necessary. the wiring if it Repair or replace slat-up switch Replace the annunciator. overhead indicated on edge surface OHM 27-56-40 for cards for leading Suspect circuit module. Refer to test and repair. Replace M229
Troubleshooting Chart
Figure 101 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-88-00
ALL ú ú 02 Page 103 ú Jul 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
C98499
A 737-300/400/500MAINTENANCE MANUAL
TROUBLE PROBABLE CAUSE ISOLATION PROCEDURE REMEDY
(Cont) correct indication intermediate-is on when leading or 5); overhead (TE flaps 1, 2, extended position edges are at LE FLAPS TRANSIT center panel light annunciator shows lamp and M229 ground between Short circuit to module module Failure in M229 associated wiring switch, S856, or Short circuit in Stall Warning associated wiring flaps, 10-degree S584 switch, or Open circuit in trailing edge to ground. S856 for a short circuit between D728B, pin 50 and wiring and connectors still remains on, check If LE FLAPS TRANSIT light module for a short circuit to ground. between light and M229 wiring and connectors light remains on, check on the P6-2 panel. If circuit breaker, C211, Open LE FLAP POSN IND-DC connector D728B, pin 50 to ground. If continuity exists, Check continuity from M229, still remains on, Check continuity from M229, If LE FLAPS TRANSIT light exists, connector D728B, pin 54 to ground. If no continuity AMM 27-88-21/501. AMM 27-88-21/401, necessary. wiring as Repair or replace in OHM 27-56-40. card A22. Suspect circuit repair as given module. Test and Replace M229 necessary. wiring as Repair or replace AMM 27-88-31/501. AMM 27-88-31/401, Adjust or replace S856, as given in as necessary. circuit. Repair for an open pin 54 and S584, between D728B, connectors S584, as given in Check wiring and Adjust or replace
Troubleshooting Chart
Figure 101 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú 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 飞行操纵 FLIGHT CONTROLS 6(141)
