DOC AIRBUS | TSM A320FLoss of the DLRB Signal to the DMC1
TASK 31-38-00-810-823-A
Loss of the DLRB Signal to the DMC1
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 31-38-00-710-073-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 31-38-00-810-072-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:30:10 UTC
Loss of the DLRB Signal to the DMC1
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 313801 | |
| AMM 31-38-34-000-001 | Removal of the Data Loading Routing Box (DLRB) |
| AMM 31-38-34-400-001 | Installation of the Data Loading Routing Box (DLRB) |
| AMM 31-60-00-610-803 | Uploading of DMC1 Software with the Portable Data Loader (SFIM Manufacturer or equivalent) |
| AMM 31-63-34-000-001 | Removal of the DMC |
| AMM 31-63-34-400-001 | Installation of the DMC |
Subtask 31-38-00-710-073-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 31-38-00-810-072-A ** ON A/C NOT FOR ALL
A. If the fault is identified by the crew observation:
DMC1 uploading is not possible.
(1) Do a check for of the aircraft wiring ASM 313801:
Subtask 31-38-00-710-074-A ** ON A/C NOT FOR ALL DMC1 uploading is not possible.
(1) Do a check for of the aircraft wiring ASM 313801:
- between the Data Loading Routing Box (102TD) pin A/23 and the DMC1 (1WT1) pin AE/3F.
- between the Data Loading Routing Box (102TD) pin A/7, 40 and the DMC1 (1WT1) pin AA/9F, 9E.
- replace the ROUTING BOX-DATA LOADING [102TD] AMM 31-38-34-000-001 and AMM 31-38-34-400-001.
- replace the DMC-1 [1WT1] AMM 31-63-34-000-001 and AMM 31-63-34-400-001.
B. Do the test given in Para. 3.A.