(2) Do the operational test of the DMC/DU Data Bus (Ref. AMM TASK 31-60-00-720-002)
4. Fault Isolation
_______________
A. If the test gives:
(1) the maintenance message DU EWD(4WT1)/WRG: DMC1(1WT1)
- do the relative fault isolation procedure (Ref. TASK 31-63-81-810-964)
(2) the maintenance message DU EWD (4WT1)/WRG: DMC3 (1WT3)
- check the wiring between the DMC3 and the Upper ECAM DU (4WT1) (Ref. ASM 31-61/00)
(a) if the wiring is correct:
- replace the DU-ECAM, UPPER (4WT1) (Ref. AMM TASK 31-63-22-000-001)and (Ref. AMM TASK 31-63-22-400-001)
(b) If the fault continues:
- replace the DMC-3 (1WT3) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001)
B. Do the test given in Para. 3.
Failure of the A629 BUS from the Lower ECAM DU to the DMC3
1. Possible Causes
_______________
- DU-ECAM, LOWER (4WT2)
- DMC-3 (1WT3)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
31-63-81-810-971 Failure of the A629 BUS from the Lower ECAM DU to the
DMC2 AMM 31-60-00-720-002 Operational Test of the DMC/DU data bus AMM 31-63-22-000-001 Removal of the Display Unit
(2WT1,2WT2,3WT1,3WT2,4WT1,4WT2) AMM 31-63-22-400-001 Installation of the Display Unit
(2WT1,2WT2,3WT1,3WT2,4WT1,4WT2) AMM 31-63-34-000-001 Removal of the DMC (1WT1,1WT2,1WT3) AMM 31-63-34-400-001 Installation of the DMC (1WT1,1WT2,1WT3) ASM 31-61/00
3. Fault Confirmation
__________________
A. Test
(1) Make sure that the DMC2 is correctly installed (Ref. AMM TASK 31-63-34-400-001)
(2) Do the operational test of the DMC/DU Data Bus (Ref. AMM TASK 31-60-00-720-002)
4. Fault Isolation
_______________
A. If the test gives:
(1) the maintenance message DU SD(4WT2)/WRG: DMC2(1WT2)
- do the relative fault isolation procedure (Ref. TASK 31-63-81-810-971)
(2) the maintenance message DU SD(4WT2)/WRG: DMC3(1WT3)
- check the wiring between the DMC3 and the Lower ECAM DU (4WT2) (Ref. ASM 31-61/00)
(a) if the wiring is correct:
- replace the DU-ECAM, LOWER (4WT2) (Ref. AMM TASK 31-63-22-000-001)and (Ref. AMM TASK 31-63-22-400-001)
(b) If the fault continues:
- replace the DMC-3 (1WT3) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001)
B. Do the test given in Para. 3.
1. Possible Causes
Loss of the Feedback Monitoring from the Upper ECAM DU _______________
- DMC-3 (1WT3)
- PFD-CAPT (2WT1)
- PFD-F/O (2WT2)
- DMC-2 (1WT2)
2. Job Set-up Information______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
31-63-00-810-874 31-63-00-810-875 31-63-00-810-876 31-63-00-810-877 31-63-00-810-882 31-63-00-810-883 31-63-00-810-884 31-63-00-810-885 31-63-00-810-890 31-63-00-810-891 31-63-00-810-892 31-63-00-810-893 31-63-81-810-922 31-63-81-810-923 31-63-81-810-924 31-63-81-810-925 31-63-81-810-926 31-63-81-810-927 31-63-81-810-960
31-63-81-810-964
31-63-81-810-968
31-63-81-810-973
31-63-81-810-974 Loss of the EEC 1 Channel A Output Bus by the DMC 1Loss of the EEC 1 Channel B Output Bus by the DMC 1Loss of the EEC 2 Channel A Output Bus by the DMC 1Loss of the EEC 2 Channel B Output Bus by the DMC 1Loss of the EEC 1 Channel A Output Bus by the DMC 2Loss of the EEC 1 Channel B Output Bus by the DMC 2Loss of the EEC 2 Channel A Output Bus by the DMC 2Loss of the EEC 2 Channel B Output Bus by the DMC 2Loss of the EEC 1 Channel A Output Bus by the DMC 3Loss of the EEC 1 Channel B Output Bus by the DMC 3Loss of the EEC 2 Channel A Output Bus by the DMC 3Loss of the EEC 2 Channel B Output Bus by the DMC 3Loss of the EEC 1 Buses by the DMC 1Loss of the EEC 1 Buses by the DMC 2Loss of the EEC 1 Buses by the DMC 3Loss of the EEC 2 Buses by the DMC 1Loss of the EEC 2 Buses by the DMC 2Loss of the EEC 2 Buses by the DMC 3Failure of the A629 BUS from the CAPT PFD DU to the DMC1Failure of the A629 BUS from the Upper ECAM DU to the DMC1Failure of the A629 BUS from the FO PFD DU to the DMC2Failure of the A629 BUS from the CAPT ND DU to the DMC3Failure of the A629 BUS from the FO PFD DU to the DMC3Energize the Aircraft Electrical Circuits from the External PowerDe-energize the Aircraft Electrical Circuits Supplied from the External PowerEIS System Test -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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