DOC AIRBUS | TSM A320FLoss of the Bus 1 of the CFDIU Detected by the VOR 1
TASK 31-32-00-810-809-A
Loss of the Bus 1 of the CFDIU Detected by the VOR 1
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 31-32-00-865-097-A
Subtask 31-32-00-810-098-A
[Rev.8 from Aug 2018]
2026.04.04 04:29:48 UTC
Loss of the Bus 1 of the CFDIU Detected by the VOR 1
1. Possible Causes
- CFDIU [1TW]
- wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 313202 | |
| AMM 31-32-34-000-001 | Removal of the CFDIU |
| AMM 31-32-34-400-001 | Installation of the CFDIU |
| AMM 34-55-00-740-002 | BITE Test of the VOR/MKR |
Subtask 31-32-00-865-097-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 31-32-00-740-146-A 4. Fault Isolation| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | NAV/VOR/1 | 2RS1 | G13 |
Subtask 31-32-00-810-098-A
A. If the test gives the maintenance message VOR1 : NO DATA FROM CFDIU:
Subtask 31-32-00-740-147-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/2B, 2C to the first terminal block , ASM 313202.
B. Do the test given in Para. 3.B.