R **ON A/C 106-149, 214-299, 301-399, 401-499,
 Subtask 23-71-00-710-050-A
 A. Test of the CVR
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the overhead control and indicating panel 21VU :
 -Push the RCDR/GND CTL
pushbutton switch.

On ACP:
 -Set INT/RAD selector switch to INT stable position
 -Activate INT pushbutton in reception mode with the volume at its maximum.
 -Push and hold the RCDR/CVR TEST pushbutton switch.
On the panel 21VU:
-On the pushbutton switch, the ONlegend comes on.
-the reception pushbutton switch movesfully out.
 At the CAPT and F/O stations:
-
Check that a continuous tone isaudible into the Loudspeakers for approximately two seconds.

 -
Check that FSK signal (a beep every 4 seconds) is heard on the loudspeakers.

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 -------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
- After a few seconds (do not  - Check that you can hear your words on
 release the RCVR/CVR TEST  the Loudspeakers.
 pushbutton), speak into the  If no audio is heard (audio muted),
 Handmike Microphone.  CVR is fault and not operational.
 - Release the RCDR/CVR TEST
 pushbutton.
 - Release the RCDR/GND CTL  - On the pushbutton switch, the ON
 pushbutton switch.  legend goes off.
 - Place the INT/RAD selector
 switch on ACP to the center
 position.
 **ON A/C ALL
 Subtask 23-71-00-710-055

 B. Test of the CVR channel recording
 NOTE : This procedure is correct for the CAPT station. It is the same for
____ the F/O and 3rd Occupant stations. Refer to the data between parentheses.
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the overhead control and  On the panel 21VU:
 indicating panel 21VU:
 - Push the RCDR/GND CTL  - On the pushbutton switch, the ON
 pushbutton switch.  legend comes on.
 Make sure that you can hear the
 conversations from the CVR microphone
 in the 600 ohms headset.
 2. On the CAPT (F/O, 3rd Occupant)  On the CAPT (F/O, 3rd Occupant) ACP:
 ACP :
 - Set INT/RAD selector switch to
 INT stable position.

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 -------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
-Activate INT pushbutton in  - The reception pushbutton switch moves reception mode with the volume fully out. at its middle position.
 3. Put covers on the CVR microphone:
 -Speak in the CAPT (F/O, 3rd  Make sure that you can hear the
 Occupant) microphone. reception in the headset.

 4. On the overhead control and indicating panel 21VU:
 -Release the RCDR/GND CTL
 pushbutton switch.

 5. Close-up
________
 Subtask 23-71-00-860-050
 A. Put the aircraft back to its initial configuration.
 (1)
 Disconnect the headset and microphones from the CAPT, F/O and 3rd Occupant stations.

 (2)
 On the ACPs, push the INT transmission and reception pushbutton switches.

 (3)
 De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

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 TASK 23-71-00-710-002 Operational Test of the CVR Recording Logic Including Time Delay Relay R NOTE : This procedure is applicable on the CVR and the SSCVR.
____
 1. Reason for the Job
__________________
 Refer to the MPD TASK: 237100-02
 To do a check of the FLT/GND power supply of the CVR.
 To do a check of the CVR power supply through the engines.
 To make sure that the CVR PWR CUT OFF RELAY 10RK operates correctly.

 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
　
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