Removal of the Cockpit Voice Recorder (CVR) Microphone Amplifier

TASK 23-71-14-000-001-A
Removal of the Cockpit Voice Recorder (CVR) Microphone Amplifier

ZONE: 212
FIN: 18RK ** ON A/C NOT FOR ALL

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

REFERENCE	QTY	DESIGNATION
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
212	COCKPIT

C. Referenced Information

REFERENCE	DESIGNATION
CVR Microphone Amplifier

3. Job Set-up
Subtask 23-71-14-865-050-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	COM/CVR/SPLY	2RK	E14
49VU	COM/CVR/CTL	4RK	E13
** ON A/C NOT FOR ALL
49VU	COM/CVR/SPLY	23RK	E14
49VU	COM/CVR/CTL	26RK	E13

4. Procedure
Subtask 23-71-14-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the CVR Microphone Amplifier
(1) Remove the screws (4) and loosen the fasteners (6) of the lining panel (5) and remove the lining panel.
(2) Remove the screws (1) and loosen the fasteners (3) of the dome light cover (2) and remove the cover.
(3) Disconnect the connectors (7) from the receptacles (9).
(4) Put CAP - BLANKING on the connectors (7) and on the receptacles (9).
(5) Remove the screws (10) and the washers (11).
(6) Remove the CVR microphone amplifier (12) from the support (8).

[Rev.10 from 2021] 2026.04.02 06:12:19 UTC