(2) At the L/G Control Lever, get access to connector A, (Ref. AMM TASK 32-31-11-000-001).
(a) Disconnect the connector A.
(b) Use a multimeter to measure 28VDC at pin W on the free-end of connector A, (Ref. ASM 32-31/05):
- if there is 28VDC, do step (3)
- if there is not 28VDC, do step (4).
(3) Replace the LEVER-L/G NORM CTL (6GA), (Ref. AMM TASK 32-31-11-400-001):
- if the fault continues, do step (4)
- if the fault goes, do step (7).
(4) Do a check and repair as necessary the aircraft wiring/connectors between pin W on the free-end of connector A and pin AA-7F on the LGCIU 1 ARINC tray (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001), (Ref. ASM 32-31/05).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-31-00∞∞∞∞∞∞∞∞∞∞Page A293
Aug 01/05 CES NOTE : It is good practice to check the two connectors to the L/G
____ lever assembly, to make sure that all the pins are installed correctly.
(a) Install the L/G control lever 6GA (Ref. AMM TASK 32-31-11-400-001) and make sure the applicable connector pins engage correctly.
(b) Do the test in Para. 3.A.:
- if the fault continues, do step (5).
- if the fault goes, do step (6)
(5) Replace the LGCIU-1 (5GA1), (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
(a) Do the test in Para. 3.A. and make sure that System 1 operates the L/G correctly, then do the procedure for System 2 at step (7).
(6) Open the C/Bs 1GA and 52GA, and close the C/B 2GA (this will put LGCIU 2 only in control).
NOTE : LGCIU 2 will do a power-up BITE which will take approximately
____
60 seconds.
(7) At the L/G Control Lever, get access to connector B, (Ref. AMM TASK 32-31-11-000-001).
(a) Disconnect the connector B.
(b) Use a multimeter to measure 28VDC at pin J on the free-end of connector B, (Ref. ASM 32-31/05):
- if there is 28VDC, do step (8)
- if there is not 28VDC, do step (9).
(8) Replace the LEVER-L/G NORM CTL (6GA), (Ref. AMM TASK 32-31-11-400-001).
- if the fault goes, do step (11)
- if the fault continues, do step (9).
(9) Do a check and repair as necessary the aircraft wiring/connectors between pin J on the free-end of connector B and pin AA-7F on the LGCIU 2 ARINC tray, (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001), (Ref. ASM 32-31/06).
(a) Install the L/G control lever 6GA (Ref. AMM TASK 32-31-11-400-001) and make sure the applicable connector pins engage correctly.
(b) Do the test in Para. 3.A.:
- if the fault goes, do step (11)
- if the fault continues, do step (10).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-31-00∞∞∞∞∞∞∞∞∞∞Page A294
Aug 01/05 CES
(10) Replace the LGCIU-2 (5GA2), (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001),
(a) Do the test in Para. 3.A. and make sure that System 2 operates the L/G correctly, then do step (11).
(11) Close the C/Bs 1GA and 52GA and return the aircraft to its initial condition.
NORMAL EXTENSION AND RETRACTION - TASK SUPPORTING DATA
______________________________________________________
1. General
_______
The task supporting data is given in the sequence that follows:
- Para. 2. gives a table of the LGCIU trouble shooting fault code numbers and their related data
- Para. 3. gives a table of the flight/ground discrete outputs from LGCIU1 used by other systems in the aircraft
- Para. 4. gives a table of the flight/ground discrete outputs from LGCIU2 used by other systems in the aircraft
- Para. 5. gives a typical procedure for trouble shooting LGCIU discrete output faults
- Para. 6. gives a typical procedure for trouble shooting proximity sensor and/or related circuit faults
- Para. 7. gives a list of the fault messages that the LGCIU1 can send to the CFDS
- Para. 8. gives a list of the fault messages that the LGCIU2 can send to the CFDS.
R 2. LGCIU Trouble Shooting Fault Code Numbers and Related Data.
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