DOC AIRBUS | TSM A320FLoss of the CFDIU Data Input Bus on the ADIRU1
TASK 34-14-00-810-869-A
Loss of the CFDIU Data Input Bus on the ADIRU1
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-14-00-740-177-A 4. Fault Isolation
Subtask 34-14-00-810-127-B
[Rev.8 from Aug 2018]
2026.04.04 04:32:47 UTC
Loss of the CFDIU Data Input Bus on the ADIRU1
1. Possible Causes
- ADIRU-1 [1FP1]
wiring of the CFDIU INPUT bus from the ADIRU1 (1FP1) to the first terminal bloc
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 34-12-34-000-001 | Removal of the ADIRU |
| AMM 34-12-34-400-001 | Installation of the ADIRU |
| AMM 34-14-00-740-001 | Interface Test of the IR |
| ASM 341402 |
Subtask 34-14-00-740-177-A 4. Fault Isolation
Subtask 34-14-00-810-127-B
A. If the BITE test gives the maintenance message CFDIU (1TW)/ADIRU1 (1FP1):
Subtask 34-14-00-740-178-A - replace the ADIRU-1 [1FP1] AMM 34-12-34-000-001 and AMM 34-12-34-400-001.
- do a check and repair the
wiring of the CFDIU INPUT bus from the ADIRU1 (1FP1) to the first terminal bloc ASM 341402.
B. Do the test given in Para. 3.