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depresurize the potable water system in
cold weather conditions.
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FWD ATTND PANEL INTERFACES (OPTIONS INCLUDED)
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FAP/AAP/PTP INTERFACES
AFT ATTND PANEL INTERFACES
The Aft Attendant Panel (AAP) is connected to the
relevant type B DEU, for controlling of the cabin
systems, through RS232 lines.
The AAP receives 28 VDC power supply from the relevant
type B DEU .
Discrete signals connect the AAP to the relevant type
B DEU for activation of the EVAC system signalling,
reset and indication.
A discrete signal controls the relevant lavatory water
heater.
A discrete signal, out of the AAP, for call indication
reset.
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AFT ATTENDANT PANEL AND EVAC PANEL INTERFACES
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FAP/AAP/PTP INTERFACES
PTP INTERFACES
The PTP is connected to the directors through ARINC
429 low speed buses.
A discrete, out of the PTP, initiates the system or
battery test of the EPSUs.
The PTP receives a discrete signal which indicates the
result of the system/battery test.
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PTP INTERFACES
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23 - COMMUNICATIONS
23-73-00 PTP UTILIZATION (STATUS AND TEST)
CONTENTS:
General
System Status
System Test
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PTP UTILIZATION (STATUS AND TEST)
GENERAL
The following sequence deals with the PTP SYSTEM STATUS
and SYSTEM TEST functions.
After pressing the DSPL ON pushbutton, the first page
gives access to 3 main parts :
- SYSTEM STATUS (to get information on the CIDS
and on all connected cabin systems),
- SYSTEM TEST (to test CIDS as well as all
connected cabin systems)
- PROGRAMMING (to change the zoning), (not
dealt with in this module).
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PTP UTILIZATION (STATUS AND TEST)
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PTP UTILIZATION (STATUS AND TEST)
SYSTEM STATUS
The SYSTEM STATUS function allows the current status
of the CIDS to be monitored. This includes the CIDS
and the interfaces to other systems.
In case of no failure, the message is "OK"
E.g. : "CIDS OK".
In case of failure, the message is indicated first.
E.g. : "SLIDE PRESS LOW".
Selecting the membrane switch next to the failure
message gives more details on the corresponding
failure.
For maintenance/cabin crew support, the following
systems functions are also monitored :
- LAVATORY SMOKE SYSTEM (Detectors and Lavatory
　
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