DOC AIRBUS | TSM A320FLoss of the BUS 5 Signal of the FCDC 1 detected by SECs
TASK 27-95-00-810-817-A
Loss of the BUS 5 Signal of the FCDC 1 detected by SECs
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 27-95-00-740-076-A 4. Fault Isolation
Subtask 27-95-00-810-063-A
[Rev.8 from Aug 2018]
2026.04.04 04:28:24 UTC
Loss of the BUS 5 Signal of the FCDC 1 detected by SECs
1. Possible Causes
- FCDC-1 [3CE1]
wiring of the DGO 1/2 signal from the FCDC 1 (3CE1) to the first terminal block
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 31-32-00-810-932-A | Failure of the Discrete Links |
| ASM 279502 | |
| AMM 27-95-34-000-001 | Removal of the FCDC |
| AMM 27-95-34-400-001 | Installation of the FCDC |
| AMM 27-96-00-740-001 | BITE Test of the EFCS (Ground Scanning) |
Subtask 27-95-00-740-076-A 4. Fault Isolation
Subtask 27-95-00-810-063-A
A. If the BITE test gives the maintenance message:
FCDC1 BUS5
Subtask 27-95-00-740-077-A FCDC1 BUS5
- replace the FCDC-1 [3CE1] AMM 27-95-34-000-001 and AMM 27-95-34-400-001.
- do the trouble shooting procedure (Ref. TSM TASK 31-32-00-810-932) related to the DGO 1/2 digital output signal of the FCDC 1 ASM 279502.
- do a check and repair the
wiring of the DGO 1/2 signal from the FCDC 1 (3CE1) to the first terminal block ASM 279502.
B. Do the test given in Para. 3.