OBRM fault

TASK 23-73-00-810-932-A
OBRM fault

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 23-73-12-000-007	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

3. Fault Confirmation
Subtask 23-73-00-710-353-A ** ON A/C NOT FOR ALL

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

4. Fault Isolation
Subtask 23-73-00-810-688-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 23-73-00-810-689-A ** ON A/C NOT FOR ALL

B. If the test confirms the fault:

(1) If the fault continues:

5. Close-up
Subtask 23-73-00-710-354-A ** ON A/C NOT FOR ALL

A. Do the test as given in Para. 3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:25:58 UTC