DIR - OBRM communication error or software mismatch caused by active Director

TASK 23-73-00-810-937-A
DIR - OBRM communication error or software mismatch caused by active Director

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 23-73-00-740-005	BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
AMM 23-73-00-869-001	OBRM - Download Procedure
AMM 23-73-12-000-007	Removal of the Flight Attendant Panel
AMM 23-73-12-400-007	Installation of the Flight Attendant Panel
AMM 23-73-21-000-001	Removal of the On-Board Replaceable Module
AMM 23-73-21-400-001	Installation of the On-Board Replaceable Module
AMM 23-73-34-000-001	Removal of the CIDS Director
AMM 23-73-34-400-001	Installation of the CIDS Director

3. Fault Confirmation
Subtask 23-73-00-710-363-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the CIDS Interface and Power-Up Test through the CFDS.
AMM 23-73-00-740-005

4. Fault Isolation
Subtask 23-73-00-810-698-A ** ON A/C NOT FOR ALL

A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.

Subtask 23-73-00-810-699-A ** ON A/C NOT FOR ALL

B. If the test confirms the fault:

get access to the FAP SOFTWARE LOADING page and compare the OBRM part number in the 'ACTIVE' window with the one in the 'IN SLOT' window.

NOTE: If the 'ACTIVE' and the 'IN SLOT' Software part numbers are the same, they are highlighted in green.

(1) If the software part number of the active OBRM is different to the part number of the OBRM in the slot:

(2) If the fault continues:

(a) If the fault continues:

(b) If the fault continues:

5. Close-up
Subtask 23-73-00-710-364-A ** ON A/C NOT FOR ALL

A. Do the test given in para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:59 UTC