DOC AIRBUS | TSM A320FLoss of the MCDU 1 by the CFDIU
TASK 31-32-00-810-919-A
Loss of the MCDU 1 by the CFDIU
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 31-32-00-865-159-A
Subtask 31-32-00-810-168-A
[Rev.8 from Aug 2018]
2026.04.04 04:29:58 UTC
Loss of the MCDU 1 by the CFDIU
1. Possible Causes
- CFDIU [1TW]
- wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 31-32-00-740-003 | Ground Scanning of the CFDIU |
| ASM 313207 | |
| AMM 31-32-34-000-001 | Removal of the CFDIU |
| AMM 31-32-34-400-001 | Installation of the CFDIU |
Subtask 31-32-00-865-159-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 31-32-00-740-282-A 4. Fault Isolation| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | AUTO FLT/MCDU/1 | 11CA1 | B01 |
Subtask 31-32-00-810-168-A
A. If the test gives the maintenance message NO MCDU1 DATA:
Subtask 31-32-00-740-283-A - replace the CFDIU [1TW] AMM 31-32-34-000-001 and AMM 31-32-34-400-001.
- do a check and repair the wiring from the CFDIU (1TW) pins AA/3J, 3H to the first terminal block and ASM 313207.
B. Do the test given in Para. 3.B.