- PHC-3 (6DA3)

 - LGCIU-2 (5GA2)

 - wiring

 2. Job Set-up Information______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
AMM 30-31-00-710-001  Operational Test of the Probe Ice Protection
 AMM 30-31-34-000-002  Removal of the Probe Heat Computer (PHC) (6DA1,6DA2,6DA3)
 AMM 30-31-34-400-002  Installation of the Probe Heat Computer (PHC) (6DA1,6DA2,6DA3)
 AMM 32-00-00-860-001  Flight Configuration Precautions
 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 32-31-73-200-002  Inspection of the NLG Proximity Sensor and Target Clearances
 AMM 32-31-73-400-005  Installation of the NLG Proximity-Sensors 12GA, 13GA, 18GA, 19GA, 24GA, 25GA, 30GA, 31GA, 37GA (36GA), 39GA (38GA).
 ASM 30-31/03
 3. Fault Confirmation__________________
 A. Test
 (1) Do the operational test of the probe ice protection (Ref. AMM TASK 30-31-00-710-001).
 「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 ∞∞30-31-00∞∞∞∞∞∞∞∞∞∞Page 250
 May 01/03R
 CES

 4. Fault Isolation
_______________

R A. If the ECAM warning message ANTI ICE STBY PITOT comes into view only or R associated with the maintenance message CHECK LGCIU - PHC 3 INTERFACE and R if the loss of the GND/FLT information occurred:
 - make sure that there is no maintenance message related to the landing gear system (Ref. ATA 32).
 (1) If there is one or more maintenance message(s):

 - do the related trouble shooting.

 (2) If there is no maintenance message:

 - do the inspection of the NLG proximity sensor and target clearances (Ref. AMM TASK 32-31-73-200-002).
 (a) If the fault continues:

 - replace the PROX SNSR-NLG EXT, SYS 1 (24GA) and PROX SNSR-NLG EXT, SYS 2 (25GA), (Ref. AMM TASK 32-31-73-000-005) and (Ref. AMM TASK 32-31-73-400-005).

 (b) If the fault continues:

 - do a check for ground at pin A/E and/or pin A/D and/or pin A/I of the PHC3 (6DA3).
 1 If there is no ground signal:
_
 - replace the LGCIU-1 (5GA1) (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 2 If there is a ground signal:
_ Simulate the flight configuration: - on the panel 49VU, open the L/G/LGCIU/SYS1/NORM (1GA)
 circuit breaker - on the panel 121VU, open the HYDRAULIC/LGCIU/SYS2 (2GA) circuit breaker.
 NOTE : Make sure that you obey the flight configuration
____ precautions (Ref. AMM TASK 32-00-00-860-001).
 - Do a check for ground at PIN A/E and/or PIN A/D and/or A/I of the PHC-3 (6DA3).
 a If there is a ground signal:
_
 - replace the LGCIU-1 (5GA1), (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 b If there is no ground signal:
_
 - replace the PHC-3 (6DA3) , (Ref. AMM TASK 30-31-34-000-002) and (Ref. AMM TASK 30-31-34-400-002).
 c If the fault continues:
_
 - replace the LGCIU-2 (5GA2).
 * If the fault continues:
 「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 ∞∞30-31-00∞∞∞∞∞∞∞∞∞∞Page 251
 May 01/03 CES

 - do a check and repair the wiring from the PHC 3 pin A/E to the LGCIU 1 pin AB/15A, and/or from the PHC 3 pin A/D to the LGCIU 2 pin AB/15A (Ref. ASM 30-31/03).
 B. Do the operational test given in Para. 3.
 「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 ∞∞30-31-00∞∞∞∞∞∞∞∞∞∞Page 252
 May 01/03R
 CES  Loss of the Power Supply for the Pitot Probe (PHC 3)

 1. Possible Causes
_______________
 - PHC-3 (6DA3)

 - wiring between the PHC 3 pin A/S and the ground terminal

 - wiring between the PHC 3 pin A/A and the circuit breaker (3DA3) R - wiring from the PHC 3 (6DA3) pin A/H to the pitot probe 3 (9DA3) pin A/B
 - C/B-ANTI ICE/PROBES/3/PITOT (3DA3)
 2. Job Set-up Information
　
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