R B. Make sure that this(these) circuit breaker(s) is(are) closed:
R -------------------------------------------------------------------------------R PANEL DESIGNATION IDENT. LOCATION R -------------------------------------------------------------------------------R 49VU COM/AUDIO/FLT/INTPH 9RN G08 R 49VU COM/AUDIO/ACP/F/O 5RN G07 R 49VU COM/AUDIO/ACP/CAPT 4RN G06 R 49VU OXYGEN/CREW/OXY/SPLY 1HT HA01 R 121VU COM NAV/ACP/THIRD/OCCPNT 6RN M02
R 4. Procedure
_________
R Subtask 23-51-00-710-064
R A. Operational Test of the Oxygen Mask Microphone
R NOTE : You must do the test at each crew station (refer to the data in
____ R parentheses).
R NOTE : Do not put oxygen mask fully against your face so that you do not
____ R use oxygen.
R -------------------------------------------------------------------------------R ACTION RESULT R -------------------------------------------------------------------------------
R 1. On the L overhead control panel
R 21VU:
R - push the OXYGEN/CREW SUPPLY
R pushbutton switch.
R 2. At the CAPT (F/O and 3rd OCCPNT)
R station:
R - remove the mask from the
R stowage box
R 3. On the CAPT (F/O, 3rd OCCPNT)
R ACP:
R - set the INT/RAD selector switch
R to RAD and hold it in this
R position.
R 4. Speak into the oxygen mask
R microphone of the CAPT (F/O, 3rd
On the OXYGEN/CREW SUPPLY pushbutton switch:
-the OFF legend goes off.
You can hear the oxygen flow rate.
Make sure that the reception is correct:
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-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
R OCCPNT) station.
R
R
R
R
R
R
R 5. On the CAPT (F/O, 3rd OCCPNT)
R ACP:
R - release the INT/RAD selector
R switch.
R 6. At the CAPT (F/O and 3rd OCCPNT)
R station:
R - put the oxygen mask into the
R stowage box and close the
R doors. (Ref. TASK 35-12-41-400-R 002)
R 5. Close-up
________
R Subtask 23-51-00-860-068
-
in the headset at the CAPT, F/O and 3rd OCCPNT stations
-
in the CAPT and F/O loud speakers (on the CAPT and F/O LOUD SPEAKER control panels 500VU and 301VU, the LOUD SPEAKER potentiometers are set to MAX).
On the CAPT (F/O, 3rd OCCPNT) ACP:
-the INT/RAD selector switch moves to the center position.
R A. Put the Aircraft back to its Initial Configuration
R (1) On the CAPT, F/O, 3rd OCCUPNT ACPs, push the INT transmission and INT
R reception pushbutton switches.
R (2) At the CAPT, F/O, 3rd OCCPNT stations, disconnect the headset.
R (3) De-energize the aircraft electrical circuits. (Ref. TASK 24-41-00-
R 862-002)
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TASK 23-51-00-740-002 BITE Test of the Audio System WARNING : MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE
_______ YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT.
NOTE : You can do the test in the hangar.
____
1.
Reason for the Job
__________________
To make sure that the AMU and the ACPs operate correctly.
2.
Job Set-up Information
______________________
A. 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 31-32-00-860-003 Procedure to Get Access to the SYSTEM REPORT/TEST/COM Page
3. Job Set-up
__________ Subtask 23-51-00-860-056
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(2)
On all the ACPs, make sure that:
-The RAD/INT switch is in the middle position,
-
All transmission pushbutton switches are fully out,
-
All reception pushbutton switches are pushed (no reception).
