DOC AIRBUS | TSM A320FLoss of the AC Supply of the ADIRU3
TASK 34-14-00-810-898-A
Loss of the AC Supply of the ADIRU3
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-14-00-740-207-A 4. Fault Isolation
Subtask 34-14-00-810-152-A
[Rev.8 from Aug 2018]
2026.04.04 04:40:24 UTC
Loss of the AC Supply of the ADIRU3
1. Possible Causes
- ADIRU-3 [1FP3]
- aircraft wiring
wiring between the ADIRU3 and the circuit breaker (4FP3)
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 34-14-00-740-207-A 4. Fault Isolation
Subtask 34-14-00-810-152-A
A. If the test gives the maintenance message ADIRU3 (1FP3) AC SUPPLY:
Subtask 34-14-00-740-208-A - remove the ADIRU-3 [1FP3] 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 ADIRU3 pin AC/5 and the first terminal block ASM 341101
- install the ADIRU3 AMM 34-12-34-400-001.
- do a check for 115VAC at pin AC/1 of the rack connector.
- install a new ADIRU3.
- do a check and repair the
wiring between the ADIRU3 and the circuit breaker (4FP3) - install the ADIRU3.
B. Do the test given in Para. 3.