23-71-00
ALL ú ú 08 Page 505 ú Sep 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 865-038
(20)
Put the boom microphones and the audio selector panels back in the usual condition.
S 865-040
(21)
Disconnect the headset from the voice-recorder control panel.
S 865-041
(22)
Remove electrical power if it is not necessary (AMM 24-22-00).
TASK 23-71-00-755-069
5. Bulk Erasure Test - Voice Recorder System_________________________________________
A. References
(1)
10-11-01/201, Normal Parking
(2)
24-22-00/201, Electrical Power - Control
(3)
32-09-02/201, Air/Ground Relays
B. Access
(1) Location Zones
211/212 Flight Compartment
C. Prepare for Test
S 865-070
(1)
Supply electrical power (AMM 24-22-00).
S 865-071
(2)
Make sure that the circuit breakers on the main power distribution panel P6, and the overhead circuit breaker panel P11 are closed:
(a)
6F4, LANDING GEAR PARKING BRAKE VLV
(b)
11S15, AIR/GND SYS 1
D. Erasure Tests
S 865-042
(1)
Supply electrical power (AMM 24-22-00).
(2)
Make sure that the parking brake is set (AMM 10-11-01).
S 865-044
(3)
Open this circuit breaker on the main power distribution panel P6 and attach DO-NOT-CLOSE tag:
S 865-043
(a) 6F4, LANDING GEAR PARKING BRAKE VLV
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23-71-00
ALL ú ú 07 Page 506 ú Sep 28/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 865-046
WARNING:_______ DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
PERSONS AND EQUIPMENT AWAY FROM THE SPOILERS. THE SPOILERS CAN
RETRACT QUICKLY AND CAUSE INJURY TO PERSONS OR DAMAGE TO
EQUIPMENT.
(4) Do the deactivation procedure for the spoilers (AMM 27-61-00) or move all persons and equipment away from the spoilers.
S 865-077
WARNING:_______MAKE SURE YOU DO THE FLIGHT MODE SIMULATION CORRECTLY. IF THE PROCEDURE IS NOT DONE CORRECTLY, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(5)
Do the Flight Mode Simulation procedure for the No. 1 air/ground system (AMM 32-09-02).
S 865-047
(6)
Connect a 600 ohm headphone to the HEADSET or HEADPHONE jack on the voice recorder control panel (P5).
S 865-048
(7)
Push the ERASE button on the voice-recorder control panel.
(a) Make sure that you do not hear a modulated sound in the headphone.
S 865-050
(8) Remove DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel:
(a) 6F4, LANDING GEAR PARKING BRAKE VLV
S 865-051
(9)
Push the ERASE button on the control panel.
(a) Make sure that you do not hear a modulated sound in the headphone.
(10)
Put the airplane back to the ground mode (AMM 32-09-02).
S 865-053
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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