____ data and cause the removal of the inhibition of the ECAM warning. Refer to TFU 34-42-00-013.
(3) If this fault has occurred during any other flight phase, do the fault isolation.
4. Fault Isolation
_______________
A. Procedure.
(1) At each step that defects are found, do the adjustment/replacement, and do the functional test of the NLG (Ref. AMM TASK 32-31-00-720-003).
(2) Visually examine the Proximity Sensors 24GA 25GA (Ref. AMM TASK 32-31-73-400-005) for alignment and security of attachment.
(3) Do the general visual inspection of the NLG (Ref. AMM TASK 32-21-00-200-002).
(4) Do a check of the pressure/extension of the NLG shock absorber (Ref. AMM TASK 12-14-32-614-004).
(5) If no defects are found do the functional test at Para 4.A.(1).
(6) If during the functional test the NLG shock absorber does not extend correctly:
(a) Replace the NLG SHOCK ABSORBER (Ref. AMM TASK 32-21-13-000-001) and (Ref. AMM TASK 32-21-13-400-001).
5. Close-up
________
A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.
B. 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 223
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TASK 32-31-00-810-813
R MLG Compressed/Extended Proximity Sensor Failed to Flight Condition (20GA, 22GA)
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
1. Possible Causes
_______________
- LGCIU-1 (5GA1)
- LGCIU-2 (5GA2)
- 20GA
- 22GA
- (20GA)
- (22GA)
- Aircraft Wiring
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Multimeter
No specific 50Vdc Isolation Tester
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
ASM 323103S01
ASM 323103S01004
ASM 323104S01
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 32-31-73-000-001 Removal of the Proximity-Sensors 9GA(8GA),
11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA), 35GA(34GA)
AMM 32-31-73-400-001 Installation of the Proximity-Sensors 9GA(8GA), 11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA)...
AMM 32-69-00-740-001 BITE Check Landing Gear Control Interface Unit (LGCIU) using MCDU to Ensure that Continuous BITE is Operative
「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 224
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3. Fault Confirmation
__________________
A. This fault condition causes the "Knock On Faults" to the LRUs as listed in the Table 1 of Page Block 301. proximity sensor faults.
(1) Do a BITE test on the LGCIU-1 (2) (Ref. AMM TASK 32-69-00-740-001)
(2) 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
(3) Do the fault isolation.
4. Fault Isolation
_______________
A. Procedure.
(1) Refer to (Ref. AMM TASK 32-31-73-000-001) Figure 404/TASK 32-31-73-991-004, and find the proximity sensor 20GA 22GA.
(2) Release the electrical connector from 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.
(3) Use a Multimeter and do a check of the resistance between the pins A and B of the PROX SNSR, (Ref. ASM 323103S01004) (Ref. ASM 323104S01) the resistance must be approximately:
- 12 ohms for ABS0121-10 and ABS0121-31 proximity sensors
- 19 ohms for ABS0121-40 proximity sensors. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 起落架 LANDING GEAR 1(12)
