DOC AIRBUS | TSM A320FLoss of the Parity Pin Program on the FAC 1
TASK 22-66-00-810-829-A
Loss of the Parity Pin Program on the FAC 1
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 22-66-00-710-096-A
Subtask 22-66-00-810-074-A
[Rev.8 from Aug 2018]
2026.04.04 04:25:18 UTC
Loss of the Parity Pin Program on the FAC 1
1. Possible Causes
- FAC-1 [1CC1]
wiring of the ground signal at the programming pins of the FAC 1 (1CC1)
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 22-66-34-000-002 | Removal of the FAC |
| AMM 22-66-34-400-002 | Installation of the FAC |
| ASM 226701 | |
| AMM 22-96-00-710-001 | Operational Test of the AFS |
Subtask 22-66-00-710-096-A
A. Test
(1) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FAC 1.
4. Fault Isolation(1) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FAC 1.
Subtask 22-66-00-810-074-A
A. If the test gives the maintenance message AFS : FAC1/PARITY PIN PRG:
Subtask 22-66-00-710-097-A - replace the FAC-1 [1CC1] , AMM 22-66-34-000-002 and AMM 22-66-34-400-002.
- do a check and repair the
wiring of the ground signal at the programming pins of the FAC 1 (1CC1) , ASM 226701.
B. Do the test given in Para. 3.