DOC AIRBUS | TSM A320FLoss of the LGCIU1 Input on the GPSSU1
TASK 34-58-00-810-821-A
Loss of the LGCIU1 Input on the GPSSU1
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 34-58-00-740-090-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-58-00-810-070-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:33:34 UTC
Loss of the LGCIU1 Input on the GPSSU1
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 |
| AMM 34-58-00-740-001 | BITE Test of the GPS |
| ASM 345801 | |
| AMM 34-58-31-000-001 | Removal of the GPSSU |
| AMM 34-58-31-400-001 | Installation of the GPSSU |
Subtask 34-58-00-740-090-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-58-00-810-070-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message LGCIU1 (5GA1)/GPSSU1 (1SN1):
Subtask 34-58-00-740-091-A ** ON A/C NOT FOR ALL - replace the
[1SN1] AMM 34-58-31-000-001 and AMM 34-58-31-400-001.
- replace the LGCIU-1 [5GA1] AMM 32-31-71-000-001 and AMM 32-31-71-400-001.
- do a check and repair the wiring between the LGCIU1 and the GPSSU1 : pins AB/7D and A/28 ASM 345801.
B. Do the test given in Para. 3.