(d) The resistance value must be more than 400Megohms.
(6) If the proximity sensor 33GA or 35GA fails one of the two (2) test at Para. 4.A.(4) or (5) replace the unserviceable proximity sensor (Ref. AMM TASK 32-31-73-000-001) (Ref. AMM TASK 32-31-73-400-001).
(7) If the tests at Para.4.A.(4) and (5) are satisfactory then do a check of the aircraft wiring between the applicable proximity sensor electrical connector and the LGCIU-1 (2) ARINC tray (Ref. ASM 323103S01) (Ref. ASM 323104S01)
(8) If there is a circuit/interface fault do the repair.
(9) Do the L/G BITE test as in Para.3.A.(1).
(10) If no fault is found at Para.4.A.(7), replace the LGCIU-1 (5GA1) LGCIU-2 (5GA2) (Ref. AMM TASK 32-31-71-000-001) (Ref. AMM TASK 32-31-71-400-001).
(11) Do the GROUND SCANNING and make sure that the ground log is clear.
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 237
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CES
TASK 32-31-00-810-818
NLG Door Open Proximity Sensor Fault (36GA, 37GA, 38GA, 39GA)
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)
- 36GA
- 37GA
- 38GA
- 39GA
- aircraft wiring
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Multimeter
No specific 45Vdc Isolation Tester
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 32-22-00-010-001 Nose Gear Doors - Ground Doors Opening
AMM 32-31-71-000-001 Removal of the LGCIU (5GA1, 5GA2)
AMM 32-31-71-400-001 Installation of the LGCIU (5GA1, 5GA2)
AMM 32-31-73-000-005 Removal of the NLG Proximity-Sensors 12GA, 13GA,
18GA, 19GA, 24GA, 25GA, 30GA, 31GA, 37GA (36GA), 39GA (38GA)
AMM 32-31-73-400-005 Installation of the NLG Proximity-Sensors 12GA, 13GA, 18GA, 19GA, 24GA, 25GA, 30GA, 31GA, 37GA (36GA), 39GA (38GA)
「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 238
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-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-69-00-740-001 BITE Check Landing Gear Control Interface Unit (LGCIU) using MCDU to Ensure that Continuous BITE is Operative
ASM 32-31/03
ASM 32-31/04
3. Fault Confirmation
__________________
A. Message Analysis.
(1) Do a BITE test on the LGCIU-1 (2) (Ref. AMM TASK 32-69-00-740-001)
(a) Access LGCIU-1 (2) TROUBLE SHOOTING (ground) and read the BITE test fault number(s) for fault confirmation (refer to AMM 326900 table 4).
NOTE : The table 4 shows the fault messages approximate to the
____
CFDS message
(2) Do the fault isolation.
4. Fault Isolation
_______________
A. Procedure.
(1) Open the N L/G doors for access to the proximity sensor (Ref. AMM TASK 32-22-00-010-001)
(2) Refer to (Ref. AMM TASK 32-31-73-000-005) Figure 406/TASK 32-31-73-991-007, and find the proximity sensor 36GA or 37GA 38GA or 39GA.
(3) Release the electrical connector for the BITE shown failed proximity sensor.
NOTE : If the ELDEC proximity sensor test unit is available. Go to
____ page block 301 and do the procedure in table 5.
(4) Use a Multimeter and do a check of the resistance between the pins A and B of the PROX SNSR, (Ref. ASM 32-31/03) (Ref. ASM 32-31/04) the resistance must be approximately 13ohms.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 起落架 LANDING GEAR 1(17)
