11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA), 35GA(34GA)
AMM 32-31-73-200-001 Inspection of the MLG Proximity Sensor and Target Clearances
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 32-31-73-820-008 Inductance Check of the Proximity Sensors/Switches
「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 252
May 01/05R CES
-------------------------------------------------------------------------------
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 or LGCIU 2 (Ref. AMM TASK 32-69-00-740-001), which identified the L L/G proximity-sensor fault:
- if the fault message L L/G DNLK PROX SNSR 15GA (17GA) is shown, do the fault isolation procedure in Para. 4.A.(2).
(2) If the fault message L L/G DNLK PROX SNSR 15GA (17GA) TGT POS is shown on the Post Flight Report (PFR), do the fault isolation procedure in Para. 4.A.(1).
NOTE : The fault L L/G DNLK PROX SNSR 15GA (17GA) TGT POS can not be
____ identified by the BITE test. The BITE test can only confirm an open-circuit or short-circuit in the proximity-sensor, or its related wiring. Target position faults can only be confirmed by continuous BITE during L/G operation. To confirm a target position fault, it is necessary to do the proximity-sensor/target inspection and the inductance check, given in the fault isolation procedure.
4. Fault Isolation_______________
A. Procedure.
(1) If the PRF shows a proximity-sensor target-position fault, do the steps that follow:
(a) Do the inspection of the applicable proximity-sensor PROX SNSR-L L/G DNLK, SYS 1 (15GA) or PROX SNSR-L L/G DNLK, SYS 2 (17GA), (Ref. AMM TASK 32-31-73-200-001):
(b) Use an inductance meter to do a check of the inductance of the applicable proximity-sensor (Ref. AMM TASK 32-31-73-820-008):
- if the fault continues, do the next step.
「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 253
May 01/05R
CES
(2) If the BITE test shows a proximity-sensor fault, do the steps that follow:
(a) At the applicable proximity sensor, release the electrical connector.
NOTE : If the ELDEC proximity sensor test unit is available, go
____ to page block 301 and do the procedure in Para. 6.
(b) 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) or (Ref. ASM 32-31/04). The resistance must be approximately 13 ohms.
(c) Connect the pins A and together.
(d) Connect one test lead of the 50Vdc Isolation Tester to the pins AB and the other test lead to the case.
(e) Supply a test signal for 5 seconds and read the resistance value shown. The resistance must be more than 400 Megohms
(f) From the resistance checks in steps (b) and (e):
- if the two resistance values are correct, do step (4)
- if one or more of the resistance values is not correct, do the next step.
(3) Replace the applicable proximity sensor PROX SNSR-L L/G DNLK, SYS 1 (15GA) or PROX SNSR-L L/G DNLK, SYS 2 (17GA), (Ref. AMM TASK 32-31-73-000-001) and (Ref. AMM TASK 32-31-73-400-001).
(4) Do a check and repair as necessary the aircraft wiring between the applicable proximity-sensor electrical connector and the related LGCIU ARINC tray, (Ref. ASM 32-31/03) or (Ref. ASM 32-31/04).
(5) Do the test in Para. 3.A.(1).
- if the fault continues, do the next step.
(6) Replace the applicable LGCIU-1 (5GA1) or 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 254
中國(guó)航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 Trouble Shooting Manual 排故手冊(cè) 起落架 LANDING GEAR 1(23)
