777 AIRCRAFT MAINTENANCE MANUAL
PAS -PASSENGER ADDRESS CONTROL SCREEN
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PAS -NOISE GENERATION
General
Use the command output -speaker drive module (SDM) screen to make PAS noise for audio tests.
Access
Use these steps on the CSCP to select the screen:
*
Touch CABIN MAINTENANCE on the CSCP main menu
*
Touch CABIN TESTS on the cabin maintenance menu
*
Touch ENGINEERING TESTS on the cabin tests menu
*
Touch COMMAND OUTPUT on the engineering tests menu
*
Touch SPEAKER DRIVE MODULE (SDM) on the command output menu.
Command Output -Speaker Drive Modules Screen
Touch the column select arrows to select one or all columns (zones).
Touch the SDM select arrows to select one or more SDMs.
Touch SPEAKER 1 ON and SPEAKER 2 ON to cause the SDMs to make noise.
Touch RESET ALL to stop the random noise.
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777 AIRCRAFT MAINTENANCE MANUAL
PAS -NOISE GENERATION
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PAS -CABIN TESTS
General
Use the cabin system control panel (CSCP) to do the cabin test for the passenger address system (PAS).
See the cabin services system (CSS) section for more information about tests (SECTION 23-39).
Quick Test
Use quick test to quickly find major faults. This test does a check of these PAS components:
*
Passenger address/cabin interphone (PA/CI) controller
*
Speaker drive modules (SDMs).
This test collects continuous monitor data for as long as 20 seconds. The CSCP shows the failures.
To start a quick test, touch START QUICK TEST.
All Test
Use all test for a more complete test. All test starts a complete BITE of the system. The screen shows all the failures the BITE finds.
To start an all test, touch START ALL TEST.
Engineering Tests
Use engineering tests for more detailed tests.
Touch ENGINEERING TESTS to show the engineering tests menu.
Lamps Test
The lamps test does not do a test of the PAS.
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777 AIRCRAFT MAINTENANCE MANUAL
PAS -CABIN TESTS
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777 AIRCRAFT MAINTENANCE MANUAL
PAS -INTERFACE DIAGRAM
Interface Diagram
This interface diagram is for reference purposes.
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777 AIRCRAFT MAINTENANCE MANUAL
PAS -INTERFACE DIAGRAM
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777 AIRCRAFT MAINTENANCE MANUAL
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PASSENGER SERVICE SYSTEM -INTRODUCTION
Introduction * PSU -passenger service unit
*
ZMU -zone management unit The passenger service system (PSS) has these three functions:
*
Lets passengers call flight attendants for cabin service
*
Gives passengers control of reading lights
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Shows passengers information on cabin signs.
The flight attendants use the PSS to do these functions:
*
Turn off passenger to attendant call chimes
*
Control no smoking areas
*
Control passenger reading lights.
Abbreviations and Acronyms
*
AIMS -airplane information management system
*
CACP -cabin area control panel
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CCP -cabin control panel
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CSS -cabin services system
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CSCP -cabin system control panel
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CSMU -cabin system management unit
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ELMS -electrical load management system
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FSEU -flap/slat electronics unit
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IFE -in-flight entertainment
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I/S BUS -intersystem bus
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OEU -overhead electronics unit
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OPAS -overhead panel ARINC 629 system
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PA/CI -passenger address/cabin interphone
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