DOC AIRBUS | TSM A320FFailure of the ADR 1 CMC-CFDS Selection Pin-Programming
TASK 34-13-81-810-847-A
Failure of the ADR 1 CMC-CFDS Selection Pin-Programming
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-13-81-740-115-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-13-81-810-099-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:32:36 UTC
Failure of the ADR 1 CMC-CFDS Selection Pin-Programming
1. Possible Causes
- ADIRU-1 [1FP1]
- rear connector
- aircraft wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 341201 | |
| AMM 34-12-34-000-001 | Removal of the ADIRU |
| AMM 34-12-34-400-001 | Installation of the ADIRU |
| AMM 34-13-00-740-003 | SYSTEM TEST of the ADR |
Subtask 34-13-81-740-115-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-13-81-810-099-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message WRG: CMC-CFDS SELECT PIN PROG:
Subtask 34-13-81-740-116-A ** ON A/C NOT FOR ALL - remove the ADIRU-1 [1FP1] AMM 34-12-34-000-001
- do a check of the rear connector : pin AB/12C
- compare the status of the pin AB/12C on the rack connector with the status given in the ASM ASM 341201.
- repair the defective aircraft wiring on the rack connector
- install the ADIRU1 AMM 34-12-34-400-001.
- install a new ADIRU1 AMM 34-12-34-400-001.
B. Do the test given in Para. 3.