S 865-068

 (2)  
Make sure this circuit breaker on the overhead circuit breaker panel, P11, is closed:

 (a)  11H33, VOICE RECORDER
 E. Voice Recorder Control Panel Test
 S 865-059
 (1)  
Connect a 600 ohm headphone to the HEADSET or HEADPHONE jack on the voice recorder control panel M50 (P5).

 S 715-062

 (2)  
LORAL/FAIRCHILD VOICE RECORDER CONTROL PANEL WITH MONITOR METER; Do the steps that follow for the voice recorder control panel operational test.

 (a)  Push and hold the TEST switch on the voice-recorder control panel for five seconds.
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757 MAINTENANCE MANUAL
 (b)  
AIRPLANES WITH LORAL/FAIRCHILD TAPE BASED VOICE RECORDER; Make sure that you hear a modulated sound in the headphone while the TEST switch is pushed.

 (c)  
AIRPLANES WITH LORAL/FAIRCHILD SOLID STATE VOICE RECORDER; Make sure that you hear four modulated sounds in the headphone while the TEST switch is pushed.

 (d)  
Make sure that the meter needle on the voice-recorder control panel reads in the green area.

 S 865-008
 (3)
Disconnect the headphone from the voice-recorder control panel.

 S 865-120

 (4)
Remove electrical power if it is not necessary (AMM 24-22-00).

 TASK 23-71-00-715-114
 3.  AIRPLANES WITH LORAL/FAIRCHILD VOICE RECORDER MODEL A100; Operational Test - Voice Recorder Front Panel_____________________________________________
 A.  General
 (1)  This adjustment/test procedure is an operational test of the voice recorder front panel.
 B.  References
 (1)  24-22-00/201, Electrical Power - Control
 C.  Access
 (1)  Location Zones 253/254 Area above passenger cabin ceiling - section 46
 D.  Prepare for Test
 S 765-079
 (1)  
Supply electrical power (AMM 24-22-00).

 S 765-080

 (2)  
Make sure this circuit breaker on the overhead circuit breaker panel, P11, is closed:

 (a)  11H33, VOICE RECORDER
 E.  Voice Recorder Front Panel Test
 S 865-060
 (1)  
Connect the 600 ohm headphone into the PHONE jack on the voice-recorder at the E7 equipment rack above the aft passenger cabin ceiling.

 S 715-081

 (2)  
Do the steps that follow for the operational test.

 (a)  
Push the ALL TEST switch on the voice-recorder.

 (b)  
Make sure that you hear a modulated sound in the headphone.

 (c)  
Make sure the voice-recorder meter reads in the green band.

 (d)  
Disconnect headphone from voice-recorder.

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757 MAINTENANCE MANUAL
 (e)  Remove electrical power if it is not necessary (AMM 24-22-00).
 TASK 23-71-00-735-003
 4.  System Test - Voice Recorder System___________________________________
 A. General
 (1)  This system test procedure is a four channel test of the system with flight crew microphones.
 B. References
 (1)  
23-51-00/501, Flight Interphone

 (2)  
24-22-00/201, Electrical Power - Control

 C. Access
 (1)  Location Zones
 211/212 Flight Compartment

 D. Prepare for Test
 S 865-004
 (1)  
Supply electrical power (AMM 24-22-00).

 S 715-000

 (2)  
Make sure that the Flight Interphone system operates correctly (AMM 23-51-00/501).

 S 865-005

 (3)  
Make sure that this circuit breaker on the main power distribution panel P6 is closed:

　
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