1EFF : 106-149, 303-399, 1 31-60-00Page 97 1 1 Config-3 Aug 01/05 1 1 1CES 1 Each EIS computer sends immediately to the CFDIU the message(s) corresponding to any impending failure, so that they are readily available to the flight crew, if required, through the maintenance mode of the MCDUs. To this end, the crew press the MCDU MENU mode key on the MCDU. A menu is offered, which proposes: FMS, CFDS, ACARS, AIDS main functions. The crew must press the line key adjacent to the chosen function (CFDS in our function). The MCDU then displays the list of the LRUs for which a fault has been recorded so far during the flight. The CFDIU stores in its EEPROM memory all the events concerning the last flight leg, so that the ground maintenance crew can have a history of the last flight leg after the flight. The maintenance team is then aware of the LRUs which have recorded faults, and, by means of more detailed menus presented on the MCDUs set in the maintenance mode, they are able to carry out 1st or 2nd level trouble shooting tasks. Upon request, the CFDIU addresses the selected computer(s) and provides access to their BITE content through defined control codes. (Ref. Fig. 048)
NOTE : The BITE of the DMCs also provides storage of the maximum
____ speed/temperature reached by the engines if these values are exceeded.
(3) System Test Functions The equipment BITEs enable the flight and maintenance crew to perform overall system tests, easily readable and interpretable. A test mode provides at a glance a confidence check of the EIS. The DUs then show a test pattern. To enable a thorough monitoring of all the EIS inputs, another test mode performs loop-around checks. These tests are accessible through menus presented on the MCDUs. These test modes are not available in flight.
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CFDS Menu Access to BITE
Figure 048
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B. Power-up Test Initialisation and Cockpit Repercussions
(1) Display unit
(a) Conditions of power-up tests initialization
-How long the computer must be de-energized: > 6 s.
-A/C configuration: whatever the A/C configuration on ground.
(b) Progress of power-up tests
-Duration: 5 s minimum and 20 s maximum.
-Cockpit repercussions directly linked to power-up test accomplishment (some of other repercussions may occur depending on the A/C configuration, but these can be disregarded): associated display unit black
(c) Results of power-up tests (cockpit repercussions, if any, in case of tests pass/tests failed).
-
Tests pass:
appropriate image
-
Tests failed:
display unit black or diagonal line
NOTE : It is recommended to do a C/B reset with engines in
____
operation.
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(2) Computer DMC
(a) Conditions of power-up tests initialization
-How long the computer must be de-energized: > 1 s.
-A/C configuration: whatever the A/C configuration on ground.
(b) Progress of power-up tests
-Duration: 4 s.
-Cockpit repercussions directly linked to power-up test accomplishment (some of other repercussions may occur depending on the A/C configuration, but these can be disregarded): -ECAM warning EIS DMC 1 or 2 or 3 FAULT Diagonal line on the three associated display units
(c) Results of power-up tests (cockpit repercussions, if any, in case of tests pass/tests failed).
-
Tests pass:
-ECAM warning
warning disappears
Appropriate images on the display units
-
Tests failed: -ECAM warning EIS DMC 1 or 2 or 3 FAULT Diagonal line on the three associated display units
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Presentation by Display Units in Normal Configuration
Figure 049
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DOOR/OXY Page
Figure 050
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1 1
1CES 1
DOOR/OXY Page
Figure 050A
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1 1
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CAB PRESS Pages Figure 051
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