W DOC AIRBUS | TSM A320F

Loss of the Reception of the ENG STP Discretes by the FAC 2

TASK 22-66-00-810-864-A
Loss of the Reception of the ENG STP Discretes by the FAC 2

1. Possible Causes
  • FAC-2 [1CC2]
  • wiring of the ENG OWN STP and ENG OPP STP discretes (from the FAC 2 (1CC2) to the diode modules (1800VD and 1801VD)
  • wiring of the diode module 1800VD
  • wiring of the diode module 1801VD
  • DIODE MODULE (1800VD)
  • DIODE MODULE (1801VD)
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
ASM 226801
AMM 22-96-00-710-001
Operational Test of the AFS
3. Fault Confirmation
Subtask 22-66-00-710-172-A
A. Test
   (1) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FAC 2.
4. Fault Isolation
Subtask 22-66-00-810-133-A
A. If the test gives the message LRU TEST NOT COMPLETED:
   (1) If the fault continues:
  • do a check of the wiring of the ENG OWN STP and ENG OPP STP discretes (from the FAC 2 (1CC2) to the diode modules (1800VD and 1801VD) ASM 226801.
     (a) If there is no continuity:
  • repair the above wiring.
     (b) It there is continuity:
  • do a check of the wiring of the diode module 1800VD from pin A/2 to the first terminal block
  • do a check of the wiring of the diode module 1801VD from pin A/7 to the first terminal block
    ASM 226801.
       1 If there is no continuity:
  • repair the above wiring.
       2 If there is continuity:
  • replace the DIODE MODULE (1800VD).
         a If the fault continues:
  • replace the DIODE MODULE (1801VD).
Subtask 22-66-00-710-173-A
B. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:25:21 UTC
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