(a) 11C23, INTERPHONE CABIN SERVICE
S 715-046
(4) Do these steps at each handset location.
(a)
Lift the handset off the hook.
(b)
DO NOT press the PA call switch.
(c)
Push the PTT switch.
(d)
Speak into the handset.
1) Make sure you hear the clear voice.
(e)
Put the handset back on the hook.
S 865-053
(5) Close this circuit breaker on the P11 panel:
(a) 11C23, INTERPHONE CABIN SERVICE
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(6) Do this test on each audio selector panel (ASP) in the flight compartment:
(a)
Push the PA MIC SELECTOR switch.
(b)
Set the PA listen switch to the ON position.
(c)
Use the hand microphone to make a PA voice announcement.
1) Make sure the voice is heard clearly in all of the passenger cabin.
(d)
Hold the hand microphone PTT switch.
1) Make sure PA announcement cannot be made from an attendant handset at the same time.
(e)
Set the BOOM/OXY toggle switch to the BOOM position.
(f)
Use the boom-microphone headset to make a voice announcement through the PA system.
(g)
Adjust the PA listen switch.
1) Make sure the sidetone is clear and volume varies accordingly.
(h)
Set the toggle switch to the MASK (or OXY) microphone position.
(i)
Use the oxygen mask microphone to make a PA voice announcement with the headphones. 1) Make sure the announcement is heard clearly in all of the
passenger cabin. 2) Make sure there is a PA sidetone at the usual sound level on headphones.
(j)
Put the audio selector panels back to their usual configurations.
J. Put the Airplane Back to Its Usual Condition
S 865-055
(1)
Put all of the handsets back on the hook.
(2)
Put the audio selector panels back to the usual condition.
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(3)
Turn the MUSIC control counterclockwise to OFF on the forward attendant panel, P21.
S 865-056
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(4) Remove electrical power if it is not necessary (AMM 24-22-00/201).
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TASK 23-31-00-735-059
3. Passenger Address System - System Test______________________________________
A. General
(1)
This test does a check of the passenger address system which includes all system adjustment specifications that are necessary for correct performance.
(2)
The system test does a test for each of these systems:
(a)
The Passenger Address Amplifier
(b)
The Speaker Sound Level
(c)
The Flight Mode
(d)
The Decompression Mode
(e)
The Boarding Music
(f) 中國航空網(wǎng) m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：757 AMM 飛機維護手冊 COMMUNICATIONS 通訊(43)
