(d) The resistance value must be more than 400Megohms.
(6) If the 27GA or 29GA 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 PROX SNSR 32GA (34GA) electrical connector and 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 245
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CES
TASK 32-31-00-810-821
NLG Door Closed Proximity Sensor Fault (30GA, 31GA)
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)
- 30GA
- 31GA
- 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 32-22-00-010-001 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 246
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
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 30GA 31GA.
(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 323103S01004) (Ref. ASM 323104S01) the resistance must be approximately 13ohms.
