DOC AIRBUS | TSM A320FFailure of the DMC1 Cooling System
TASK 31-63-00-810-988-A
Failure of the DMC1 Cooling System
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 31-63-00-740-376-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 31-63-00-810-241-A ** ON A/C NOT FOR ALL
Subtask 31-63-00-740-377-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:30:52 UTC
Failure of the DMC1 Cooling System
1. Possible Causes
- avionics ventilation system
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 21-26-00-710-001 | Operational Check of the Avionics Equipment Ventilation-System via MCDU |
| AMM 31-60-00-740-004 | EIS System Test |
Subtask 31-63-00-740-376-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 31-63-00-810-241-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message DMC1(1WT1)/COOLING
5. Close-up- do the operational test of the avionics equipment ventilation AMM 21-26-00-710-001
- do the related trouble shooting (Ref. TSM chapter 21)
- do a visual check of the cooling air openings of the DMC 1
Subtask 31-63-00-740-377-A ** ON A/C NOT FOR ALL
A. Do the test given in Para. 3.A.