R C. If the CPC 2 (12HL) CLASS 3 FAULTS gives the maintenance messsage EIU SIGNAL REPLACED (17) caused in flight phase other than 7 or 8: - do the operational test of the engine interface unit (Ref. AMM TASK 73-25-34-710-040).
R R (1) If the test gives a different maintenance message refer to the Fault Symptom List.
(2) If the fault continues: - do a check and repair the wiring between: CPC 2 (12HL) AB/8D and EIU 2 (1KS2) AB/G1, CPC 2 (12HL) AB/7D and EIU 1 (1KS2) AB/G1 (Ref. ASM 21-31/02).
D. Do the test as given in the Para. 3.A.
5. Close-up________
A. Put the aircraft back to its initial configuration.
TASK 21-31-00-810-817
LGCIU Signal Mismatch
1. Possible Causes
_______________
- CONTROLLER-CABIN PRESSURE 1 (11HL)
- CONTROLLER-CABIN PRESSURE 2 (12HL)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 21-31-34-000-001 Removal of the Cabin Pressure Controller (11HL,12HL) AMM 21-31-34-400-001 Installation of the Cabin Pressure Controller (11HL,12HL)
AMM 32-69-00-740-001 BITE Check Landing Gear Control Interface Unit (LGCIU) using MCDU to Ensure that Continuous BITE is Operative
ASM 21-31/02
3. Fault Confirmation
__________________
A. Not applicable, you cannot confirm this fault on the ground.
4. Fault Isolation
_______________
A. If the CPC 1 (11HL) CLASS 3 FAULTS gives the maintenance messsage LGCIU SIG. REPLACED (35):
- do the BITE test of the landing gear (Ref. AMM TASK 32-69-00-740-001). R
R (1) If the test gives a different maintenance message refer to the Fault R Symptom List.
(2) If the fault continues:
- do a check and repair the wiring between: CPC 1 (11HL) AB/1B and LGCIU 1 (5GA1) AB/C3, CPC 1 (11HL) AB/2B and LGCIU 2 (5GA2) AB/C3 (Ref. ASM 21-31/02).
(3) If the fault continues:
- replace the CONTROLLER-CABIN PRESSURE 1 (11HL) (Ref. AMM TASK 21-31-34-000-001) and (Ref. AMM TASK 21-31-34-400-001).
R B. If the CPC 2 (12HL) CLASS 3 FAULTS gives the maintenance messsage LGCIU SIG. REPLACED (35): - do the BITE test of the landing gear (Ref. AMM TASK 32-69-00-740-001).
R R (1) If the test gives a different maintenance message refer to the Fault Symptom List.
(2) If the fault continues: - do a check and repair the wiring between: CPC 2 (12HL) AB/2B and LGCIU 2 (5GA2) AB/C3, CPC 2 (12HL) AB/1B and LGCIU 1 (5GA1) AB/C3 (Ref. ASM 21-31/02).
(3) If the fault continues: - replace the CONTROLLER-CABIN PRESSURE 2 (12HL) (Ref. AMM TASK 21-31-34-000-001) and (Ref. AMM TASK 21-31-34-400-001).
C. Do the test as given in the Para. 3.A.
5. Close-up________
A. Put the aircraft back to its initial configuration.
TASK 21-31-00-810-818
DMU receives no Data from the CPC 1
1. Possible Causes
_______________
- DMU (1TV)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 21-31-00-710-002 Operational Test of the Pressure Control and
Monitoring AMM 31-36-00-710-001 Test of the DMU (1TV) AMM 31-36-34-000-001 Removal of the Data Management Unit (DMU) (1TV) AMM 31-36-34-400-001 Installation of the Data Management Unit (DMU) (1TV) ASM 21-31/03 ASM 21-31/03
3. Fault Confirmation
__________________
A. Do the Test of the DMU (Ref. AMM TASK 31-36-00-710-001).
NOTE : Make sure that the circuit breakers 1HL, 2HL and 3HL are closed
____
during the test.
4. Fault Isolation
_______________
A. If the test gives the maintenance message NO PRESS CONTROL 1 DATA:
- do the operational test of the pressure control and monitoring system (Ref. AMM TASK 21-31-00-710-002).
(1) If the fault continues:
- replace the DMU (1TV) (Ref. AMM TASK 31-36-34-000-001) and (Ref. AMM TASK 31-36-34-400-001).
(2) If the fault continues:
- do a check and repair the wiring of the signal ARINC 429 OUT (BUS 1.1) from the CPC 1 (11HL) to the DMU (1TV) (Ref. ASM 21-31/03) and (Ref. ASM 21-31/03).
B. Do the test given in para. 3.
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