DOC AIRBUS | TSM A320FFailure of the Input Refresh Rate or Transmission Error from LGCIU 1 to ADR 2
TASK 34-13-81-810-882-A
Failure of the Input Refresh Rate or Transmission Error from LGCIU 1 to ADR 2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 34-13-81-740-185-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-13-81-810-134-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:32:40 UTC
Failure of the Input Refresh Rate or Transmission Error from LGCIU 1 to ADR 2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 32-31-71-000-001 | Removal of the LGCIU |
| AMM 32-31-71-400-001 | Installation of the LGCIU |
| ASM 326102 | |
| 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 34-13-81-740-185-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-13-81-810-134-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message LGCIU1/ ADIRU2(1FP2):
Subtask 34-13-81-740-186-A ** ON A/C NOT FOR ALL - replace the LGCIU-1 [5GA1] AMM 32-31-71-000-001 and AMM 32-31-71-400-001.
- do a check for continuity of the aircraft wiring from the LGCIU 1 (5GA1) to the ADIRU 2 (1FP2):
pins AA/13J, 15J to pins AA/7D, 7E for the BUS 2 O/P bus ASM 326102.
- repair the above wiring.
- replace the ADIRU-2 [1FP2] AMM 34-12-34-000-001 and AMM 34-12-34-400-001.
B. Do the test given in Para. 3.