______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
23-71-00-710-001  Operational Test of the CVR and the CVR Channel Recording 23-71-13-991-001 Fig. 401
 3. Job Set-up
__________ Subtask 23-71-13-865-051
 A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU COM/CVR/SPLY 2RK E14 49VU COM/CVR/CTL 4RK E13
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 4. Procedure
_________
 (Ref. Fig. 401/TASK 23-71-13-991-001) Subtask 23-71-13-420-050
 A. Installation of the CVR Microphone
 (1)
 Clean the component interface and/or the adjacent area.

 (2)
 Do an inspection of the component interface and/or the adjacent area.

 (3)
 Put the CVR microphone (2) on its support (3).

 (4)
 Install the washers (4) and the screws (1), and tighten the screws.

 (5)
 Put the support (3) with the CVR microphone (2) in position.

 (6)
 Install the washers (13) and the screws (12). Tighten the screws.

 (7)
 Make sure that the wire clamp (14) is in the correct condition. Replace the wire clamp (14) if necessary. Put the wire clamp (14) on the wire of the CVR microphone (2).

 (8)
 Put the wire clamp (14) in position and install the washers (6) and (7), and the screws (5). Tighten the screws.

 (9)
 Remove the blanking caps from the connector (8) and the receptacle (9).

 (10)
 Make sure that the connector (8) and the receptacle (9) are in the correct condition.

 (11)
 Connect the connector (8) to the receptacle (9).

 (12)
 Put the unit 25VU (11) in its housing.

 (13) Tighten the QAD fasteners (10) by one quarter turn. Subtask 23-71-13-865-052
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 2RK, 4RK
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 C. Do the operational test of the cockpit voice recorder system (Ref. TASK 23-71-00-710-001)
 5. Close-up
________ Subtask 23-71-13-860-050
 A. Make sure that the work area is clean and clear of tool(s) and other items.
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 AMPLIFIER - CVR MICROPHONE (18RK) - REMOVAL/INSTALLATION
________________________________________________________ TASK 23-71-14-000-001 Removal of the CVR Microphone Amplifier (18RK)
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
 No specific circuit breaker(s) safety clip(s)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
23-71-14-991-001 Fig. 401
 3. Job Set-up
__________ Subtask 23-71-14-865-050
 A. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU COM/CVR/SPLY 2RK E14 49VU COM/CVR/CTL 4RK E13
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 4. Procedure
_________
 (Ref. Fig. 401/TASK 23-71-14-991-001) Subtask 23-71-14-020-050
 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 blanking caps on the connectors (7) and on the receptacles (9).
　
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