R NOTE : This procedure is applicable on the CVR and the SSCVR.
____ R NOTE : For this procedure, the parking brake must be locked (ACCU PRESS POINTER
____ R ON THE TRIPLE INDICATOR IN THE GREEN RANGE).
1. Reason for the Job
__________________
Refer to the MPD TASK: 237100-01
To do a check of the operation of the Cockpit Voice Recorder (CVR).
To do a check of the recording of the communications from the CAPT, F/O and
3rd Occupant stations and the CVR microphone.
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific 150 ohms microphone
No specific 600 ohms headset
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power
1EFF : ALL 1 23-71-00Page 501 1 1 Feb 01/05 1 1 1CES 1
3. Job Set-up
__________
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-213,
Subtask 23-71-00-860-051
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
(2)
Make sure that the parking brake is locked.
(3)
Make sure that the aircraft is in the ground configuration.
(4)
Make sure that the engines are stopped.
(5)
On the maintenance panel 50VU, connect a 600 ohms headset to the CVR/HEAD SET connector.
(6)
Connect a 150 ohms microphone to the HAND MIC connectors of the CAPT, F/O and 3rd Occupant stations.
R **ON A/C 106-149, 214-299, 301-399, 401-499,
Subtask 23-71-00-860-051-A
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
(2)
Make sure that the parking brake is locked.
(3)
Make sure that the aircraft is in the ground configuration.
(4)
Make sure that the engines are stopped.
(5)
Connect a 150 ohms microphone to the HAND MIC connectors of the CAPT, F/O and 3rd Occupant stations.
(6)
On the overhead control panel 50VU : connect a 600 ohms headset to the HEADSET jack.
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Subtask 23-71-00-865-050
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU COM/CVR/SPLY 2RK E14 49VU COM/CVR/CTL 4RK E13
4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-213,
Subtask 23-71-00-710-050
A. Test of the CVR
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the overhead control and indicating panel 21VU : On the panel 21VU:
- Push the RCDR/GND CTL pushbutton switch. - On the pushbutton switch, the ONlegend comes on. Make sure that you can hear the conversations from the CVR microphone in the headset.
At the CAPT and F/O stations:
- Push and hold the RCDR/CVR TEST pushbutton switch. - You can hear a signal in theloudspeakers.
NOTE : The signal will be 600 Hz for____ some CVR PNs, and 800 Hz for others.
NOTE : There can be an acoustic____ feedback during the test, but
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-------------------------------------------------------------------------------
ACTION RESULT
-------------------------------------------------------------------------------this does not make it necessary to remove the CVR.
-
Release the RCDR/CVR TEST - You cannot hear the signal. pushbutton switch.
-
Release the RCDR/GND CTL - On the pushbutton switch, the ON pushbutton switch. legend goes off.
