CDSS Controller Failure

TASK 23-72-00-810-818-A
CDSS Controller Failure

1. Possible Causes

CONTROLLER - COCKPIT DOOR SURVEILLANCE SYSTEM [9RA]
wiring
DU-ECAM, LOWER [4WT2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 23-72-00-710-001	Operational Test of the Anti-Hijack Camera-Monitoring-System
ASM 237201
AMM 23-72-31-000-001	Removal of the System Controller
AMM 23-72-31-400-001	Installation of the System Controller

3. Fault Confirmation
Subtask 23-72-00-710-064-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the operational test of the Cockpit-Door Surveillance System (CDSS) AMM 23-72-00-710-001.

4. Fault Isolation
Subtask 23-72-00-810-092-A ** ON A/C NOT FOR ALL

A. If the message 'VIDEO NOT AVAIL' shows on the System Display (SD):
(1) Replace the CONTROLLER - COCKPIT DOOR SURVEILLANCE SYSTEM [9RA] , AMM 23-72-31-000-001 and AMM 23-72-31-400-001.
(2) If the fault continues:

Do a check of the wiring between the pin AA-2T at the CONTROLLER - COCKPIT DOOR SURVEILLANCE SYSTEM [9RA] and the pin AA-3 at the DU-ECAM, LOWER [4WT2] , repair if necessary ASM 237201.

Subtask 23-72-00-700-062-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:49 UTC