Loss of the Reception of the FMGC 1 OWN CB 1 Bus by the RMP 1

TASK 23-13-00-810-850-A
Loss of the Reception of the FMGC 1 OWN CB 1 Bus by the RMP 1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 23-13-00-740-001	BITE Test of the Radio Management
ASM 231301
AMM 23-13-13-000-001	Removal of the Radio Management Panel (RMP)
AMM 23-13-13-400-001	Installation of the Radio Management Panel (RMP)

3. Fault Confirmation
Subtask 23-13-00-865-064-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AUTO FLT/FMGC/1	10CA1	B02

Subtask 23-13-00-740-122-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 1.

4. Fault Isolation
Subtask 23-13-00-810-089-B

A. If the test gives the maintenance message FMGC1(1CA1)/RMP1(1RG1):

replace the RMP-COM/NAV FREQ SEL, 1 [1RG1] AMM 23-13-13-000-001 and AMM 23-13-13-400-001.

(1) If the fault continues:

do a check and repair the wiring of the DATA FROM FMGC signal, (from the RMP 1 (1RG1) pins A/DD, EE to the first terminal block) ASM 231301.

Subtask 23-13-00-740-123-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:41 UTC