W DOC AIRBUS | TSM A320F

FM 1/FM 2 Incoherence (Independant Operation)

TASK 22-83-00-810-892-A
FM 1/FM 2 Incoherence (Independant Operation)

1. Possible Causes
  • wiring of the pin programming
  • FMGC-1 [1CA1]
  • FMGC-2 [1CA2]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 22-83-34-000-001
Removal of the FMGC
AMM 22-83-34-400-001
Installation of the FMGC
AWM 228530
AWM 228531
AWM 228536
AWM 228537
3. Fault Confirmation
Subtask 22-83-00-710-184-A
A. Not applicable.
4. Fault Isolation
Subtask 22-83-00-865-105-A
A. Table of the circuit breakers used in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUAUTO FLT/FMGC/110CA1B02
121VUAUTO FLT/FMGC/210CA2M17
Subtask 22-83-00-810-175-A
B. If the message is still present in the scratchpad:
  • perform a C/B reset (10CA1 and 10CA2) of both FMGCs.
   (1) If the message disappears, no maintenance action is necessary.
   (2) If the fault continues:
     (a) Do a check of:
     (b) If the fault continues:
     (c) If the fault continues:
Subtask 22-83-00-710-185-A
C. Not applicable.
[Rev.8 from Aug 2018] 2026.04.04 04:25:34 UTC
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