Loss of the Reception of the FMGC 1 OWN A Bus by the FMGC 2

TASK 22-83-00-810-815-A
Loss of the Reception of the FMGC 1 OWN A Bus by the FMGC 2

1. Possible Causes

FMGC-2 [1CA2]
wiring of the FMGC OPP A (COM) and FMGC OPP A (MON) buses (from the FMGC 2 (1CA2) to the first terminal block)
wiring of the FMGC OPP HLTY discrete (from the FMGC 2 (1CA2) to the first termi al block)

2. Job Set-up Information
A. Referenced Information

3. Fault Confirmation
Subtask 22-83-00-710-070-A

A. Test
(1) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FMGC 2.

4. Fault Isolation
Subtask 22-83-00-810-068-A

A. If the test gives the maintenance message AFS: FMGC2/FMGC1 BUS A WG:

(1) If the fault continues:

do a check of the wiring of the FMGC OPP A (COM) and FMGC OPP A (MON) buses (from the FMGC 2 (1CA2) to the first terminal block) ASM 228602.

(a) If there is no continuity:

(b) If there is continuity:

do a check and repair the wiring of the FMGC OPP HLTY discrete (from the FMGC 2 (1CA2) to the first termi al block) ASM 228504.

Subtask 22-83-00-710-071-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:30 UTC