DOC AIRBUS | TSM A320FLoss of the VOR1 Interface with the DMC1
TASK 34-55-00-810-837-A
Loss of the VOR1 Interface with the DMC1
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-55-00-740-096-A 4. Fault Isolation
Subtask 34-55-00-810-094-A
[Rev.8 from Aug 2018]
2026.04.04 04:33:32 UTC
Loss of the VOR1 Interface with the DMC1
1. Possible Causes
- DMC-1 [1WT1]
- wiring between the DMC1 and the first terminal block
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 31-60-00-740-004 | EIS System Test |
| AMM 31-63-34-000-001 | Removal of the DMC |
| AMM 31-63-34-400-001 | Installation of the DMC |
| AMM 34-55-00-740-002 | BITE Test of the VOR/MKR |
| ASM 345501 |
Subtask 34-55-00-740-096-A 4. Fault Isolation
Subtask 34-55-00-810-094-A
A. If the test gives the maintenance message DMC1/2 (1WT1/2)/DDRMI (1FN)/VOR1 (3RS1):
Subtask 34-55-00-740-097-A - do the SYSTEM TEST of the DMC1 AMM 31-60-00-740-004.
- replace the DMC-1 [1WT1] AMM 31-63-34-000-001 and AMM 31-63-34-400-001.
- remove the DMC1
- do a check and repair the wiring between the DMC1 and the first terminal block : for pins AA/9C, 9D ASM 345501
- install the DMC1.
B. Do the test given in Para. 3.