Loss of the ADR1 BUS2 Interface with the EFCS2 Identified by the EFCS2
1. Possible Causes
_______________
- wiring between the terminal blocks 1860VT and 1840VT
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
R AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning) AWM 34-11-18
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the EFCS (Ground Scanning) (system 2) (Ref. AMM TASK 27-96-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message ADR1 BUS 2:
- do a check and repair the wiring between the terminal blocks 1860VT and 1840VT: between pins 28F, 27F and 76E, 75E (Ref. AWM 34-11-18).
B. Do the test given in Para. 3.
Loss of the ADR1 BUS3 Interface with the EFCS1 Identified by the EFCS2
1. Possible Causes
_______________
- wiring between the terminal blocks 1851VT and 1831VT
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
R AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning) AWM 34-11-21
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the EFCS (Ground Scanning) (system 2) (Ref. AMM TASK 27-96-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message ADR1 BUS 3:
- do a check and repair the wiring between the terminal blocks 1851VT and 1831VT: between pins 2M, 1M and 4F, 4B (Ref. AWM 34-11-21).
B. Do the test given in Para. 3.
Loss of the ADR2 BUS3 Output Identified by the EFCS1
1. Possible Causes
_______________
- ADIRU-2 (1FP2)
- wiring of the ADR OUTPUT BUS3 bus from the ADIRU2 (1FP2) to the first terminal block
- wiring between the terminal blocks 1510VT and 1851VT
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning) AMM 34-12-34-000-001 Removal of the ADIRU (1FP1, 1FP2, 1FP3) AMM 34-12-34-400-001 Installation of the ADIRU (1FP1, 1FP2, 1FP3) AMM 34-14-00-740-001 Interface Test of the IR ASM 34-13/01 AWM 34-11-22
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the EFCS (Ground scanning) (system 1) (Ref. AMM TASK 27-96-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message ADR2 OR BUS3 TO ELAC1:
- do the interface test of the IR (system 1) (Ref. AMM TASK 34-14-00-740-001).
(1) If the test gives the maintenance message ADIRU2 (1FP2)/ADIRU1 (1FP1):
- replace the ADIRU-2 (1FP2) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
(a) If the fautl continues:
- do a check and repair the wiring of the ADR OUTPUT BUS3 bus from the ADIRU2 (1FP2) to the first terminal block (Ref. ASM 34-13/01).
(2) If the test does not give the maintenance message ADIRU2
(1FP2)/ADIRU1 (1FP1):
- do a check and repair the wiring between the terminal blocks 1510VT and 1851VT between pins 1U, 1V and 4E, 3E (Ref. AWM 34-11-22).
B. Do the test given in Para. 3.
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