Loss of the FMGC 2 OWN CB1 Bus (RMP 2 Source)

TASK 22-83-00-810-813-A
Loss of the FMGC 2 OWN CB1 Bus (RMP 2 Source)

1. Possible Causes

FMGC-2 [1CA2]
wiring of the FMGC OWN CB 1 (COM) bus (from the FMGC 2 (1CA2) to the first terminal block)

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
ASM 228602
AMM 23-13-00-740-001	BITE Test of the Radio Management

3. Fault Confirmation
Subtask 22-83-00-865-054-A

A. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	AUTO FLT/FMGC/2	10CA2	M17

Subtask 22-83-00-740-058-A

B. Test
(1) Do the BITE test of the radio management AMM 23-13-00-740-001 and read the result for the RMP 2.

4. Fault Isolation
Subtask 22-83-00-810-066-B

A. If the test gives the maintenance message FMGC2(1CA2)/RMP2(1RG2):

(1) If the fault continues:

do a check and repair the wiring of the FMGC OWN CB 1 (COM) bus (from the FMGC 2 (1CA2) to the first terminal block) ASM 228602.

Subtask 22-83-00-740-059-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:29 UTC