(4)
Remove electrical power if no longer required.
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VOICE RECORDER CONTROL PANEL - REMOVAL/INSTALLATION
1. General
A. The voice recorder control panel is located in the pilots' overhead panel P5. All electrical connections are made through a single connector at the rear of the panel.
2. Remove Voice Recorder Control Panel
A. Open VOICE RECORDER circuit breaker on circuit breaker panel P6-2.
B. Remove voice recorder control panel.
3. Install Voice Recorder Control Panel
A. Install voice recorder control panel.
B. Close VOICE RECORDER circuit breaker on electronics circuit breaker panel P6-2.
C. Test voice recorder control panel.
(1)
Provide ground electrical power to airplane.
(2)
Plug headset into HEADSET jack on voice recorder control panel.
(3)
Press TEST pushbutton on voice recorder control panel for at least 5 seconds. While pushbutton is depressed, ascertain that 600-Hz beep is present at intervals of 0.8 seconds and observe that meter indicates in green area.
(4)
Remove electrical power if no longer required.
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Feb 15/72 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 23-71-12 Page 401