DOC AIRBUS | TSM A320FLoss of the Highspeed Bus Output Detected by the ECAM Control Panel from the DMC 3 (DMC 2 Switched to the DMC 3)
TASK 31-63-00-810-802-A
Loss of the Highspeed Bus Output Detected by the ECAM Control Panel from the DMC 3 (DMC 2 Switched to the DMC 3)
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 31-63-00-710-074-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 31-63-00-810-062-B ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:30:36 UTC
Loss of the Highspeed Bus Output Detected by the ECAM Control Panel from the DMC 3 (DMC 2 Switched to the DMC 3)
1. Possible Causes
- DMC-3 [1WT3]
- wiring
wiring between the DMC 3 (1WT3) and the DMC 2 (1WT2)
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 31-50-00-710-001 | Ground Scanning of the Central Warning System |
| ASM 316103 | |
| AMM 31-63-34-000-001 | Removal of the DMC |
| AMM 31-63-34-400-001 | Installation of the DMC |
| ASM 316805 |
Subtask 31-63-00-710-074-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 31-63-00-810-062-B ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message ECP : NO DATA FROM DMC 2 OR 3:
Subtask 31-63-00-710-075-A ** ON A/C NOT FOR ALL - replace the DMC-3 [1WT3] AMM 31-63-34-000-001 and AMM 31-63-34-400-001.
- do a check of the wiring from DMC 2 (1WT2) pins AB/1E, 1F to the first terminal block ASM 316103.
- repair the wiring.
- do a check and repair the
wiring between the DMC 3 (1WT3) and the DMC 2 (1WT2) from pins AB/1E, 1F to pins AA/13E, 13F ASM 316805.
B. Do the test given in Para. 3.