Installation of the Audio Control Panel (ACP)

TASK 23-51-12-400-001-A
Installation of the Audio Control Panel (ACP)

ZONE: 120
ZONE: 128
ZONE: 210
ZONE: 211
FIN: 2RN1
FIN: 2RN2
FIN: 2RN3
FIN: 2RN5 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
120	AVIONICS COMPARTMENT
128	REAR AVIONIC COMPARTMENT
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
211	COCKPIT

B. Referenced Information

REFERENCE	DESIGNATION
TASK 23-51-00-740-002-A	BITE Test of the Audio Management Unit (AMU)
Audio Control Panel (ACP) ** ON A/C NOT FOR ALL
Audio Control Panel (ACP) ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 23-51-12-865-051-A

A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	LIGHTING/XFMR/115V.5V/ESS BUS	29LP	H03
** ON A/C NOT FOR ALL
49VU	COM/AUDIO/ACP/F/O	5RN	G07
** ON A/C NOT FOR ALL
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/ACP CAPT/SELCAL/INT 1 AUDIO/AVNCS	4RN	G06
** ON A/C NOT FOR ALL
49VU	LIGHTING/XFMR/115V.5V/ESS BUS	29LP	H01
** ON A/C ALL
121VU	COM NAV/ACP/THIRD/OCCPNT	6RN	M02
** ON A/C NOT FOR ALL
121VU	COM NAV/ACP/FOURTH/OCCPNT	20RN	M01
** ON A/C ALL
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 2	27LP	X05
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 1	26LP	X04
122VU	LIGHTING/ANN LT SPLY/XFMR/STAT INV	28LP	X03
122VU	LIGHTING/INSTL LT/MAIN INST/PNL AND/PED	4LF	Y04
122VU	LIGHTING/INSTL LT/OVHD/PNL	3LF	Y03

4. Procedure
Subtask 23-51-12-420-050-A

A. Installation of the Audio Control Panel

NOTE: This installation procedure is applicable to each audio control panel.

(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove blanking caps from the electrical connector (4) and the receptacle (3).
(4) Make sure that the electrical connector (4) and the receptacle (3) are in the correct condition.
(5) Connect the electrical connector (4) to the receptacle (3).
(6) Install the audio control panel (2) in its housing.
(7) Tighten the Dzus fasteners (1) by a quarter turn.

Subtask 23-51-12-865-052-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	LIGHTING/XFMR/115V.5V/ESS BUS	29LP	H03
** ON A/C NOT FOR ALL
49VU	COM/AUDIO/ACP/F/O	5RN	G07
** ON A/C NOT FOR ALL
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/ACP CAPT/SELCAL/INT 1 AUDIO/AVNCS	4RN	G06
** ON A/C NOT FOR ALL
49VU	LIGHTING/XFMR/115V.5V/ESS BUS	29LP	H01
** ON A/C ALL
121VU	COM NAV/ACP/THIRD/OCCPNT	6RN	M02
** ON A/C NOT FOR ALL
121VU	COM NAV/ACP/FOURTH/OCCPNT	20RN	M01
** ON A/C ALL
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 2	27LP	X05
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 1	26LP	X04
122VU	LIGHTING/ANN LT SPLY/XFMR/STAT INV	28LP	X03
122VU	LIGHTING/INSTL LT/MAIN INST/PNL AND/PED	4LF	Y04
122VU	LIGHTING/INSTL LT/OVHD/PNL	3LF	Y03

Subtask 23-51-12-740-050-A

C. Do the BITE test of the AMU-ACP (Ref. AMM TASK 23-51-00-740-002).

5. Close-up
Subtask 23-51-12-410-050-B

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 04:40:04 UTC