- if the fault warnings clear, do step (5)
- if the fault warnings do not go, do the next step.
(4) Replace the LGCIU-1 (5GA1), (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001). (Ref. AMM TASK 32-31-00-440-002)
(5) Open the C/Bs 1GA and 52GA. This will isolate the LGCIU1
(6) Open the C/B 2GA for 3 seconds.
(a) Close the C/B 2GA. This will cause the LGCIU2 to do a power-up BITE test.
(b) Wait 60 seconds.
(7) Do a check of the UPPER ECAM and STATUS pages and check that the fault warnings clear:
- If the fault warnings do not go, do the next step.
(8) Replace the LGCIU-2 (5GA2), (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
5. Close-up
________
A. Put the aircraft back to its initial configuration.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-31-00∞∞∞∞∞∞∞∞∞∞Page 207
May 01/03R
CES
INTENTIONALLY BLANK
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R ∞∞32-31-00∞∞∞∞∞∞∞∞∞∞Page 208
TASK 32-31-00-810-806
L/G Selector Valve Fault.
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______
START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
1. Possible Causes
_______________
- LGCIU-1 (5GA1)
- LGCIU-2 (5GA2)
- SEL VALVE-L/G (40GA)
- aircraft wiring
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
R No specific multimeter No specific 50Vdc Isolation Tester
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R AMM 31-32-00-860-009 R AMM 32-31-00-720-002
AMM 32-31-12-000-001 AMM 32-31-12-400-001 AMM 32-31-71-000-001 AMM 32-31-71-400-001 ASM 32-31/05 ASM 32-31/06Procedure to Get Access to the SYSTEM REPORT/TEST/L/G PageFunctional Test of the Normal Extension and Retraction of the Landing GearRemoval of the L/G Selector Valve 40GAInstallation of the L/G Selector Valve 40GARemoval of the LGCIU (5GA1, 5GA2)Installation of the LGCIU (5GA1, 5GA2)
3. Fault Confirmation
__________________
A. Test
(1) Examine the LAST LEG REPORT of the LGCIU 1 (2), identified on the Post Flight Report (PFR):
- if the message L/G SEL VALVE 40GA is shown, do the Fault Isolation procedure given in Para. 4.A.
NOTE : If you were referred from TSM TASK 32-31-00-810-80200, do the
____ Fault Isolation procedure from Para. 4.A.(6).
4. Fault Isolation
_______________
R A. Procedure
(1) Interchange the LGCIU 1 with the LGCIU 2 (Ref. AMM TASK 32-31-71-000-001), (Ref. AMM TASK 32-31-71-400-001).
(2) Do the functional test of the normal extension and retraction of the landing gear, two times (Ref. AMM TASK 32-31-00-720-002).
NOTE : The LGCIU in control changes over from LGCIU 1 (2) to LGCIU 2
____ (1), when the L/G selector lever is moved from the DOWN selection.
(3) Get access to the SYTEM REPORT/TEST/L/G page (Ref. AMM TASK 31-32-00-860-009) and do a GROUND SCANNING of LGCIU 1 and LGCIU 2, for the L/G SEL VALVE 40GA fault message:
- if the fault stays in the LGCIU identified on the PFR, go to Para. (6).
- if the fault moves to the opposite LGCIU, do the next step.
(4) Replace the LGCIU-1 (5GA1) or LGCIU-2 (5GA2), (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001), which is opposite to the one identified on the PFR.
NOTE : The fault is in the LRU that was initially in the LGCIU system
____ identified on the PFR and is now in the opposite system, after the interchange in Para. (1).
R (5) Make sure that the serviceable LGCIU is installed in its initial R postion.
R (6) Do the test given in Para. (2):
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本文链接地址：A320 Trouble Shooting Manual 排故手册 起落架 LANDING GEAR 1(7)
