FAP - Audio Module - No or wrong function

TASK 23-73-00-810-914-A
FAP - Audio Module - No or wrong function

1. Possible Causes

Audio Module
FAP [120RH]

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 23-73-12-000-002	Removal of the Forward Attendant Panel
AMM 23-73-12-000-004	Removal of the Audio Module
AMM 23-73-12-400-002	Installation of the Forward Attendant Panel
AMM 23-73-12-400-004	Installation of the Audio Module

3. Fault Confirmation
Subtask 23-73-00-710-318-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the CIDS BITE test through the CFDS AMM 23-73-00-740-005.
(2) Push on the FAP 120RH on the Audio Modul the related switches to control the system.

4. Fault Isolation
Subtask 23-73-00-810-648-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 23-73-00-810-649-A ** ON A/C NOT FOR ALL

B. If there is no maintenance message, but one or more function controls are not possible from the Audio Module:

replace the Audio Module AMM 23-73-12-000-004 and AMM 23-73-12-400-004:

(1) If the fault continues:

replace the FAP [120RH] AMM 23-73-12-000-002 and AMM 23-73-12-400-002.

(2) If the fault continues:

do the trouble shooting of the related audio system.

5. Close-up
Subtask 23-73-00-710-319-A ** ON A/C NOT FOR ALL

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

[Rev.8 from Aug 2018] 2026.04.04 04:25:56 UTC