Cargo Door (Fwd) Lockshaft Proximity Sensor Fault (05MJ)
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
1. Possible Causes
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- LGCIU-2 (5GA2)
- 5MJ
- 05MJ
- aircraft wiring
2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Multimeter
No specific 50Vdc Isolation Tester
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 32-69-00-740-001 BITE Check Landing Gear Control Interface Unit
(LGCIU) using MCDU to Ensure that Continuous BITE is
Operative AMM 52-35-13-000-002 Removal of the Proximity Switches 5MJ and/or 12MJ AMM 52-35-13-400-002 Installation of the Proximity Switches 5MJ and 12MJ ASM 27-51/06 ASM 52-35/01
3. Fault Confirmation
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A. Message Analysis.
(1) Do a BITE test on the LGCIU-2 (Ref. AMM TASK 32-69-00-740-001)
(a) Access LGCIU-2 TROUBLE SHOOTING (ground) and read the BITE test fault number(s) for fault confirmation (refer to AMM 326900 table 4).
「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 282
May 01/05R CES
NOTE : : The table 4 shows the fault messages approximate to the
____
CFDS message.
(2) Do the fault isolation.
4. Fault Isolation
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A. Cargo Compartment Control.
(1) The proximity sensor 5MJ is installed above the locking shaft of the FWD cargo compartment door.
(a) Refer to (Ref. AMM TASK 52-35-13-000-002) Figure 402/TASK 52-35-13-991-002 for the proximity sensor 05MJ location and:
(b) Refer to Detail A and Detail B and find the proximity sensor 05MJ
(c) Release the electrical connector for 05MJ. NOTE : If the ELDEC proximity sensor test unit is available. Go
____ to page block 301 and do the procedure in table 5.
(2) Use a Multimeter and do a check of the resistance between the pins A and B of the PROX SNSR,(Ref. ASM 27-51/06) the resistance must be approximately 13ohms.
(3) On the PROX SNSR do a check of circuit isolation.
(a) Connect the pins A and B together.
(b) Connect one test lead of the 50Vdc Isolation Tester to the pins AB and the other test lead to the case.
(c) Supply a test signal for 5 seconds and read the resistance value shown.
(d) The resistance value must be more than 400Megohms.
(4) If the 05MJ fails one of the two (2) test at Para.4.A.(2) or (3) replace the unserviceable proximity sensor(Ref. AMM TASK 52-35-13-000-002) (Ref. AMM TASK 52-35-13-400-002).
(5) If the tests at Para.4.A.(2) and (3) are satisfactory then do a check of the aircraft wiring between the applicable proximity sensor electrical connector and the LGCIU-2 ARINC tray (Ref. ASM 52-35/01).
(6) If there is no continuity repair the wiring/interface.
(7) Do the L/G BITE test as in Para.3.A.(1).
(8) If no fault is found at Para.4.A.(5), replace the LGCIU-2 (5GA2) (Ref. AMM TASK 32-31-71-000-001) (Ref. AMM TASK 32-31-71-400-001).
「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 283
May 01/05R CES
(9) Do the GROUND SCANNING to check that there are no fault entries in the ground log.
5. Close-up
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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 284
May 01/05R
CES
TASK 32-31-00-810-835
Cargo Door (Aft) Lockshaft Proximity Sensor Fault (12MJ)
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
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