- LGCIU-2 (5GA2)

 - PROX SNSR-R L/G EXT, SYS 1 (20GA)

 - PROX SNSR-L L/G EXT, SYS 1 (21GA)

 - PROX SNSR-R L/G EXT, SYS 2 (22GA)

 - PROX SNSR-L L/G EXT, SYS 2 (23GA)

 - PROX SNSR-NLG UPLK, SYS 1 (12GA)

 - PROX SNSR-NLG UPLK, SYS 2 (13GA)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 27-94-34-000-001 Removal of the SEC (1CE1,1CE2,1CE3)
 AMM 27-94-34-400-001 Installation of the SEC (1CE1,1CE2,1CE3)
 AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning)

R AMM 32-00-00-860-002 Ground Configuration after Flight Configuration with
R Electrical Power 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 32-31-73-000-005 Removal of the NLG Proximity-Sensors 12GA, 13GA, 18GA, 19GA, 24GA, 25GA, 30GA, 31GA, 37GA (36GA), 39GA (38GA) AMM 32-31-73-400-001 Installation of the Proximity-Sensors 9GA(8GA), 11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA)... AMM 32-31-73-400-005 Installation of the NLG Proximity-Sensors 12GA, 13GA, 18GA, 19GA, 24GA, 25GA, 30GA, 31GA, 37GA (36GA), 39GA (38GA) AMM 32-69-00-860-001 Simulation of Flight, with the Aircraft on the Ground

 3. Fault Confirmation
__________________

 A. Test
 (1) Do the simulation of flight, with the aircraft on the ground (Ref. AMM TASK 32-69-00-860-001).
 B. Test
 (1) Do the BITE test of the EFCS (ground scanning) (Ref. AMM TASK 27-96-00-740-001).
 4. Fault Isolation
_______________
 A. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FLIGHT CONTROLS/SEC1/NORM/SPLY 21CE1 B08 105VU FLT CTL/SEC1/STBY SPLY 22CE B01 121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19 121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18
 B. If the test doesn' t confirm the fault and if the maintenance message LGCIU BUS DISAGREE was shown after landing gear free-fall extension:
 - no maintenance action is necessary.
 C. If the BITE test gives the maintenance message: LGCIU BUS DISAGREE - open the circuit breaker (21CE1) on the panel 49VU and the circuit
 breaker (22CE) on the panel 105VU for the SEC1 - open the circuit breaker (21CE2) on the panel 121VU for the SEC2 and do the test given in Para. 3. (only the SEC3 is supplied).
 (1) Close the circuit breaker (21CE2).

 (2) Open the circuit breaker (21CE3) on the panel 121VU for the SEC3 and do the test given in Para. 3. (only the SEC2 is supplied).

 (3) Close the circuit breakers (21CE1) and (22CE).

 (4) Open the circuit breaker (21CE2) on the panel 121VU for the SEC2 and do the test given in Para. 3. (only the SEC1 is supplied).

 (5) Close the circuit breakers (21CE2) and (21CE3).

 (a) If the message is shown only when the SEC3 is supplied:
 - replace the SEC-3 (1CE3) (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
 「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 ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page A252
 May 01/05R CES

 (b) If the message is shown only when the SEC2 is supplied:

 - replace the SEC-2 (1CE2) (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).

 (c) If the message is shown only when the SEC1 is supplied:

 - replace the SEC-1 (1CE1) (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
 1 If the fault continues:
_
 - replace the LGCIU-1 (5GA1) (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 2 If the fault continues:
_
 - replace the LGCIU-2 (5GA2) (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 (d) If the message is shown when the SEC2 is supplied and when the SEC3 is supplied:
 - replace the LGCIU-1 (5GA1) (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 1 If the fault continues:
_
 - replace the LGCIU-2 (5GA2) (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
　
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