Loss of the Reception of the VOR 1 Bus by one FMGC

TASK 22-83-00-810-841-A
Loss of the Reception of the VOR 1 Bus by one FMGC

1. Possible Causes

FMGC-1 [1CA1]
RECEIVER-VOR/MKR, 1 [3RS1]
wiring of the VOR OWN bus (from the FMGC 1 (1CA1) to the VOR/MKR receiver 1 (3RS1))
FMGC-2 [1CA2]
wiring of the VOR OPP 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 228601
AMM 22-91-00-710-001	Ground Scanning of the AFS
AMM 34-55-31-000-001	Removal of the VOR/MKR Receiver
AMM 34-55-31-400-001	Installation of the VOR/MKR Receiver

3. Fault Confirmation
Subtask 22-83-00-865-068-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	NAV/VOR/1	2RS1	G13

Subtask 22-83-00-710-114-A

B. Test
(1) Do the Ground Scanning of the AFS AMM 22-91-00-710-001.

4. Fault Isolation
Subtask 22-83-00-810-110-A

A. If the test gives the maintenance message AFS : VOR1 (ISSUED BY : FM1):

(1) If the fault continues:

(a) If the fault continues:

do a check and repair the wiring of the VOR OWN bus (from the FMGC 1 (1CA1) to the VOR/MKR receiver 1 (3RS1)) ASM 228601.

Subtask 22-83-00-810-111-A

B. If the test gives the maintenance message AFS : VOR1 (ISSUED BY : FM2):

(1) If the fault continues:

do a check and repair the wiring of the VOR OPP bus (from the FMGC 2 (1CA2) to the first terminal block) ASM 228601.

Subtask 22-83-00-710-115-A

C. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:31 UTC