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

TASK 22-83-00-810-816-A
Loss of the Reception of the FMGC 2 OWN A Bus by the FMGC 1

1. Possible Causes

FMGC-1 [1CA1]
wiring of the FMGC OPP A (COM) and FMGC OPP A (MON) buses (from the FMGC 1 (1CA1) to the first terminal block)
wiring of the FMGC OPP HLTY discrete (from the FMGC 1 (1CA1) to the first termi al block)

2. Job Set-up Information
A. Referenced Information

3. Fault Confirmation
Subtask 22-83-00-710-072-A

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

4. Fault Isolation
Subtask 22-83-00-810-069-A

A. If the test gives the maintenance message AFS: FMGC 1/FMGC 2 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 1 (1CA1) 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 1 (1CA1) to the first termi al block) ASM 228504.

Subtask 22-83-00-710-073-A

B. Do the test given in Para. 3.

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