DOC AIRBUS | TSM A320FLoss of the AC Supply of the ADIRU1
TASK 34-14-00-810-896-A
Loss of the AC Supply of the ADIRU1
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-14-00-740-203-A 4. Fault Isolation
Subtask 34-14-00-810-150-A
[Rev.8 from Aug 2018]
2026.04.04 04:32:49 UTC
Loss of the AC Supply of the ADIRU1
1. Possible Causes
- ADIRU-1 [1FP1]
- aircraft wiring
wiring between the ADIRU1 and the circuit breaker (4FP1)
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 341101 | |
| 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 |
Subtask 34-14-00-740-203-A 4. Fault Isolation
Subtask 34-14-00-810-150-A
A. If the test gives the maintenance message ADIRU1 (1FP1) AC SUPPLY:
Subtask 34-14-00-740-204-A - remove the ADIRU-1 [1FP1] AMM 34-12-34-000-001
- do a check for a ground signal at pin AC/5 of the rack connector.
- repair the aircraft wiring between ADIRU1 pin AC/5 and the first terminal block ASM 341101
- install the ADIRU1 AMM 34-12-34-400-001.
- do a check for 115VAC at pin AC/1 of the rack connector.
- install a new ADIRU1.
- do a check and repair the
wiring between the ADIRU1 and the circuit breaker (4FP1) ASM 341101 - install the ADIRU1.
B. Do the test given in Para. 3.