Automatic Switching of the MCDU 1 Inoperative

TASK 22-82-00-810-813-A
Automatic Switching of the MCDU 1 Inoperative

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 22-70-00-710-003	Operational Test of the Automatic Switching of the MCDUs
AMM 22-82-12-000-001	Removal of the MCDU
AMM 22-82-12-400-002	Installation of the MCDU
AMM 22-83-34-000-001	Removal of the FMGC
AMM 22-83-34-400-001	Installation of the FMGC
ASM 228604

3. Fault Confirmation
Subtask 22-82-00-710-074-A

A. Test
(1) Do the operational test of the automatic switching of the MCDUs AMM 22-70-00-710-003.

4. Fault Isolation
Subtask 22-82-00-810-070-A

A. If the INIT page does not come into view on the MCDU 1 when the FMGC 1 is deactivated:

(1) If the fault continues:

(a) If the fault continues:

do a check and repair the wiring of the MCDU OPP OUT bus from the FMGC 2 (1CA2) to the MCDU 1 (3CA1) ASM 228604.

Subtask 22-82-00-710-075-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:27 UTC