Removal of the Audio Management Unit (AMU)

TASK 23-51-34-000-001-A
Removal of the Audio Management Unit (AMU)

ZONE: 127
FIN: 1RN

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
127	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
Audio Management Unit (AMU)

3. Job Set-up
Subtask 23-51-34-865-051-A

A. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	COM/AUDIO/ACP/F/O	5RN	G07
** ON A/C NOT FOR ALL
49VU	COM/AUDIO/FLT/INTPH	9RN	G08
49VU	COM/AUDIO/ACP/CAPT	4RN	G06
** ON A/C NOT FOR ALL
49VU	COM/ACP F/O/BITE/ INT 2 AUDIO/3&5 OCCPNT	5RN	G07
** ON A/C NOT FOR ALL
49VU	COM/INT/1+2	9RN	G08
49VU	COM/ACP CAPT/SELCAL/INT 1 AUDIO/AVNCS	4RN	G06
** ON A/C ALL
121VU	COM NAV/SELCAL	8RN	M04
121VU	COM NAV/ACP/THIRD/OCCPNT	6RN	M02
** ON A/C NOT FOR ALL
121VU	COM NAV/ACP/FOURTH/OCCPNT	20RN	M01

Subtask 23-51-34-010-050-A

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 824 in zone 128.
(2) Open the access door 824.

4. Procedure
Subtask 23-51-34-020-050-A

A. Removal of the Audio Management Unit
(1) Loosen the nuts (3).
(2) Lower the nuts (3).
(3) Pull the AMU (5) on its rack (2) to disconnect the electrical connectors (1).
(4) Remove the AMU (5) from its rack (2).
(5) Put CAP - BLANKING on the disconnected electrical connectors (1).

[Rev.10 from 2021] 2026.04.02 06:12:17 UTC