W DOC AIRBUS | TSM A320F

Loss of the FAC 1 Bus Feedback

TASK 22-66-00-810-805-A
Loss of the FAC 1 Bus Feedback

1. Possible Causes
  • FAC-1 [1CC1]
  • the wiring of the FAC OWN COM bus on the FAC1 (1CC1) (from pins AE/10A, 10B to the terminal block 1831VT)
  • wiring of the FAC OWN MON bus on the FAC 1 (1CC1)
2. Job Set-up Information
 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
AWM 226901
AMM 22-96-00-710-001
Operational Test of the AFS
3. Fault Confirmation
Subtask 22-66-00-710-056-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
Subtask 22-66-00-810-054-A
A. If the test gives the maintenance message AFS: FAC 1/C-M ARINC LINK:
   (1) If the fault continues:
  • do a check of the wiring of the FAC OWN COM bus on the FAC1 (1CC1) (from pins AE/10A, 10B to the terminal block 1831VT), AWM 226901.
     (a) If there is no continuity:
  • repair the above mentioned wiring.
     (b) If there is continuity:
  • do a check and repair the wiring of the FAC OWN MON bus on the FAC 1 (1CC1) (from pins AE/12A, 12B to pins AB/7J, 7K) AWM 226901.
Subtask 22-66-00-710-057-A
B. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:25:15 UTC
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