Loudspeaker Volume Adjustments

TASK 23-73-00-860-009-A
Loudspeaker Volume Adjustments

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 23-73-00-861-001-A	Energize the Cabin Intercommunication Data System (CIDS)
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
Loudspeaker Volume Adjustments

3. Job Set-up
Subtask 23-73-00-860-163-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the Cabin Intercommunication Data System (CIDS) is energized
(Ref. AMM TASK 23-73-00-861-001).

Subtask 23-73-00-865-210-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
49VU	AIR COND/CAB/PRESS/CTL1	1HL	D09
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B	4KS2	Q40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	Q40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
** ON A/C NOT FOR ALL
122VU	AIR COND/CAB PRESS/CTL/2	2HL	Y22

4. Procedure
Subtask 23-73-00-869-080-A ** ON A/C NOT FOR ALL

A. Adjustment of the loudspeaker volume

Loudspeaker Volume Adjustments ** ON A/C NOT FOR ALL

NOTE: The adjustment of the loudspeaker volume is described only for the cabin zones. All other locations follow the same procedure.

If the LEVEL ADJUSTMENT page is enabled on FAP:
(1) On the Flight Attendant Panel (FAP) 120RH, push the LEVEL ADJUST key.

the LEVEL ADJUSTMENT page with an activated ENTER ACCESS CODE window shows.

(2) On the numeric keyboard, enter the access code '318' and push the ENTER key.

the ENTER ACCESS CODE window disappears.

(3) On the LEVEL ADJUSTMENT page, push the related CABIN ZONES - ADJUST key.

the VOLUME ADJUSTMENT - CABIN ZONES window shows.

(4) On the VOLUME ADJUSTMENT - CABIN ZONES window, push the 'Up' or 'Down' key to select the required cabin segment (SEG).

the selected cabin SEG is highlighted.

(5) On the VOLUME ADJUSTMENT - CABIN ZONES window, push the ANNOUNC. VOLUME and/or CHIME VOLUME +/- key to change the volume.

the selected loudspeaker volumes are indicated online.

NOTE: Pushing the DEFAULT key sets all adjustments back to the basic volume levels.

(6) On the LEVEL ADJUSTMENT page, push the CABIN ZONES - ADJUST key.

the VOLUME ADJUSTMENT - CABIN ZONES window disappears.

NOTE: If required, select the next location for new volume level settings before saving the data.

(7) On the LEVEL ADJUSTMENT page, push the SAVE key.

a message box with information about the target layout, the date and the new count shows.

(8) On the message box, push the OK key.

the message box disappears.
the LEVEL ADJUSTMENT page shows.

(9) On the FAP, push the CABIN STATUS key.

the Cabin Status page shows.

5. Close-up
Subtask 23-73-00-869-081-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)

[Rev.10 from 2021] 2026.04.02 06:51:44 UTC