(b)  
Speak at a usual voice level while you are approximately four feet away from the area microphone.

 (c)  
Make sure that you hear your voice through the headphone at the control panel.

 NOTE: When you do a test of the digital or solid state voice
____ recorder, you will hear your voice in the headset as you speak. When you do a test of the analog or tape based voice recorder, you will hear your voice in the headset after approximately a 0.5 second delay.
 G.  Bulk Erase Test
 S 755-014
 (1)  Do the Bulk Erase Test:
 (a)  
Make sure the airplane is in the usual parked position, with chocks at each wheel (AMM 10-11-00/201).

 (b)  
Set the parking brake (AMM 10-11-00/201).

 (c)  
Push the ERASE switch for two to three seconds.

 1)  Make sure that you hear a modulated sound through the headphone for 4 to 13 seconds.
 WARNING:_______MAKE SURE CHOCKS ARE AT EACH WHEEL. INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
 (d)  
Release the parking brake (AMM 10-11-00/201).

 (e)  
Push and hold the ERASE switch for two to three seconds. 1) Make sure that you do not hear a modulated sound.

 (f)  
Set the parking brake (AMM 10-11-00/201).

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737-300/400/500MAINTENANCE MANUAL
 H.  Put the Airplane Back to the Usual Condition: S 085-015
 (1)  
Remove the headphone from the control panel.
 S 865-016

 (2)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

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737-300/400/500MAINTENANCE MANUAL
 VOICE RECORDER UNIT - REMOVAL/INSTALLATION
__________________________________________
 1.  General_______
 A.  This procedure has three tasks:
 (1)  
Removal of the voice recorder unit.

 (2)  
Installation of the voice recorder unit.

 (3)  
Operational test for the voice recorder system.

 B.  The voice recorder unit is installed in the aft cargo compartment on the right side of the airplane.
 C.  Electrical connections are made through one connector at the rear of the voice recorder unit.
 TASK 23-71-11-004-001
 2.  Voice Recorder Unit Removal___________________________
 A.  References
 (1)  AMM 20-10-07/201, Electrical/Electronic Black Box
 B.  Access
 (1)  Location Zone
 219 Aft Cargo Compartment, Right

 C.  Procedure
 S 864-002
 (1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  P18 Circuit Breaker Panel
 1) C107, VOICE RCDR

 S 024-003
 (2)  Remove the voice recorder unit (AMM 20-10-07/201).
 TASK 23-71-11-404-004
 3.  Voice Recorder Unit Installation________________________________
 A.  References
 (1)  
AMM 20-10-07/201, Electrical/Electronic Black Box

 (2)  
AIPC 23-71-11-01, Illustrated Parts Catalog

 B.  Access
 (1)  Location Zone
 219 Aft Cargo Compartment, Right

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