BITE Test of the ILS 1 Inoperative A320
1.Possible Causes:
-MMR-1 (40RT1)
-LGCIU-1 (5GA1)
-wiring of the GROUND/AIR discrete from the MMR-1 (40RT1) to the LGCIU (5GA1)
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
| Ref. AMM 32-31-71-000-001 | Removal of the LGCIU |
| Ref. AMM 32-31-71-400-001 | Installation of the LGCIU |
| Ref. AMM 34-36-00-740-003 | BITE Test of the MMR |
| Ref. ASM 34-36-01 | |
| Ref. AMM 34-36-31-000-001 | Removal of the ILS Receiver |
| Ref. AMM 34-36-31-400-001 | Installation of the ILS Receiver |
3. Fault Confirmation
SUBTASK 34-36-00-740-072-A
A. Test
(1) Not applicable, the fault is evident.
4. Fault Isolation
SUBTASK 34-36-00-810-077-B
A. If you cannot start the BITE test of the MMR 1 on the MCDU:
— replace the MMR-1 (40RT1), Ref. AMM 34-36-31-000-001 and Ref. AMM 34-36-31-400-001.
(1) If the fault continues:
— replace the LGCIU-1 (5GA1) Ref. AMM 32-31-71-000-001 and Ref. AMM 32-31-71-400-001.
(2) If the fault continues:
— do a check and repair the wiring of the GROUND/AIR discrete from the MMR-1 (40RT1) to the LGCIU (5GA1) Ref. ASM 34-36-01.
SUBTASK 34-36-00-740-073-B
B. Do the BITE test of the MMR Ref. AMM 34-36-00-740-003.
