DOC AIRBUS | TSM A320FFailure of the Pin Programming of the Upper ECAM DU by the DMC2
TASK 31-63-81-810-881-A
Failure of the Pin Programming of the Upper ECAM DU by the DMC2
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 31-63-81-740-208-A ** ON A/C NOT FOR ALL Subtask 31-63-81-740-208-B ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 31-63-81-810-137-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:31:01 UTC
Failure of the Pin Programming of the Upper ECAM DU by the DMC2
1. Possible Causes
- DU-ECAM, UPPER [4WT1]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 31-60-00-740-002 | Perform Electronic Instrument System (EIS) Input Test |
| AMM 31-60-00-740-004 | EIS System Test |
| ASM 316101 | |
| AMM 31-63-22-000-001 | Removal of the Display Unit |
| AMM 31-63-22-400-001 | Installation of the Display Unit |
Subtask 31-63-81-740-208-A ** ON A/C NOT FOR ALL Subtask 31-63-81-740-208-B ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 31-63-81-810-137-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message DMC2 : DU ECAM1 POS PIN:
Subtask 31-63-81-740-209-A ** ON A/C NOT FOR ALL - do a check for ground signals at upper ECAM DU (4WT1) connector AA ASM 316101.
- repair the wiring.
- replace the DU-ECAM, UPPER [4WT1] AMM 31-63-22-000-001 and AMM 31-63-22-400-001.
B. Do the test given in Para. 3.
Subtask 31-63-81-810-137-B ** ON A/C NOT FOR ALL C. If the test gives the maintenance message WRG: PIN PROG/DU EWD(4WT1)
Subtask 31-63-81-740-209-B ** ON A/C NOT FOR ALL - do a check for ground signals at upper ECAM DU (4WT1) connector AA ASM 316101.
- repair the wiring.
- replace the DU-ECAM, UPPER [4WT1] AMM 31-63-22-000-001 and AMM 31-63-22-400-001.
D. Do the test given in Para. 3.