DOC AIRBUS | TSM A320FFailure of the DMC1 Pin Programming
TASK 31-63-81-810-816-A
Failure of the DMC1 Pin Programming
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 31-63-81-740-080-A ** ON A/C NOT FOR ALL Subtask 31-63-81-740-080-B ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 31-63-81-810-068-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:30:54 UTC
Failure of the DMC1 Pin Programming
1. Possible Causes
- DMC-1 [1WT1]
- rack connector
- aircraft wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 31-32-00-860-008 | Procedure to Get Access to the SYSTEM REPORT/TEST/INST Page |
| AMM 31-60-00-740-002 | Perform Electronic Instrument System (EIS) Input Test |
| AMM 31-60-00-740-004 | EIS System Test |
| AWM 316128 | |
| AMM 31-63-34-000-001 | Removal of the DMC |
| AMM 31-63-34-400-001 | Installation of the DMC |
Subtask 31-63-81-740-080-A ** ON A/C NOT FOR ALL Subtask 31-63-81-740-080-B ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 31-63-81-810-068-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message:
DMC1: PROGRAM PIN
or
DMC1: POSITION PIN
Subtask 31-63-81-810-068-B ** ON A/C NOT FOR ALL DMC1: PROGRAM PIN
or
DMC1: POSITION PIN
- do a check for ground signals at DMC 1 (1WT1) connector AB AWM 316128.
- repair the wiring.
- replace the DMC-1 [1WT1] AMM 31-63-34-000-001 and AMM 31-63-34-400-001.
A. If the test gives the maintenance message WRG:PIN PROG/DMC1 (1WT1):
(1) Get access to the hard pin-prog page of the DMC 1 on the MCDU page:
(a) Get access to the SYSTEM REPORT/TEST/INST page AMM 31-32-00-860-008.
(b) On the MCDU, push the line key adjacent to the EIS 1 indication: the DMC 1 main menu page comes into view.
(c) On the MCDU, push the line key adjacent to the PIN PROG/STATUS AND XLOAD indication : the DMC 1 PIN PROG/STATUS AND XLOAD page comes into view.
(d) On the MCDU, push the line key adjacent to the PIN PROG indication: the DMC 1 PIN PROG page comes into view.
(e) On the MCDU, push the line key adjacent to the HARD PIN PROG indication: the HARD PIN PROG of the DMC 1 and associated DUs page comes into view.
(f) On the MCDU, push the line key adjacent to the DMC 1 indication: the hard pin prog status of the DMC 1 comes into view.
(2) Compare the hard pin prog of the DMC 1 with the state of the aircraft pin programming given in the AWM AWM 316128.
Subtask 31-63-81-740-081-A (1) Get access to the hard pin-prog page of the DMC 1 on the MCDU page:
(a) Get access to the SYSTEM REPORT/TEST/INST page AMM 31-32-00-860-008.
(b) On the MCDU, push the line key adjacent to the EIS 1 indication: the DMC 1 main menu page comes into view.
(c) On the MCDU, push the line key adjacent to the PIN PROG/STATUS AND XLOAD indication : the DMC 1 PIN PROG/STATUS AND XLOAD page comes into view.
(d) On the MCDU, push the line key adjacent to the PIN PROG indication: the DMC 1 PIN PROG page comes into view.
(e) On the MCDU, push the line key adjacent to the HARD PIN PROG indication: the HARD PIN PROG of the DMC 1 and associated DUs page comes into view.
(f) On the MCDU, push the line key adjacent to the DMC 1 indication: the hard pin prog status of the DMC 1 comes into view.
(2) Compare the hard pin prog of the DMC 1 with the state of the aircraft pin programming given in the AWM AWM 316128.
- remove the DMC-1 [1WT1] , AMM 31-63-34-000-001
- do a check of the defective pin(s) on the rack connector .
- repair the aircraft wiring
- install the DMC 1 AMM 31-63-34-400-001.
- install a new DMC 1 AMM 31-63-34-400-001.
B. Do the test given in Para. 3.