1EFF : ALL 1 31-68-00Page 420 1 1 Aug 01/05 1 1 1CES 1R **ON A/C ALL
Subtask 31-68-00-020-053
B. Deactivation of the EIS DMC selector switch
(1) Make a mark on the panel 8VU close to the EIS DMC selector switch to forbid the crew to set the EIS DMC selector switch in any position except NORM which is the valid position.
5. Close-up
________
Subtask 31-68-00-860-057
A. Put the aircraft back to its initial configuration.
(1)
Do the EIS Stop Procedure (Ref. TASK 31-60-00-860-002)
(2)
Make an entry in the log book.
(3)
De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002)
1EFF : ALL 1 31-68-00Page 421 1 1 Feb 01/05 1 1 1CES 1
TASK 31-68-00-440-001 Reactivation of the EIS DMC Selector Switch
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
TSM 31 PB 101 (for corrective action)
3. Job Set-up
__________ Subtask 31-68-00-860-068
A. Put the aircraft back to its initial configuration.
(1) Remove the mark from the panel 8VU which tells to set the EIS DMC Selector Switch only in the NORM position.
4. Procedure
_________ Subtask 31-68-00-810-050
A. Do the trouble-shooting of the EIS DMC switching function.
(Ref. TSM 31 PB 101).
1EFF : ALL 1 31-68-00Page 422 1 1 Feb 01/05 1 1 1CES 1 EIS - TEST/BITE - DESCRIPTION AND OPERATION
___________________________________________
1. General
_______
A. FIDS and BITE Functions in the EIS The EIS/FWS main computers include Built-In-Test (BITE) functions which perform a permanent monitoring of all the items of equipment involved in the EFIS and ECAM operational functions, and also of the various sources which provide the EIS/FWS with input signals. The DMCs act as FIDS (Fault Isolation and Detection System) for the DUs and the A/C circuitry (wiring, control knobs, selector switches)... The FWCs act as FIDS for the SDACs and the ECP, the cockpit loud speakers, and the various controls and the alert lights. The FAC1 acts as FIDS for the AFS, and particularly for the FCU which includes the EFIS control sections.
B. EIS/FWS Architecture Versus Maintenance Requirements and Basic Operation (Ref. Fig. 001) The CFDIU provides interface with the BITE resident routines for maintenance and test implemented in the computers, and particularly the DMCs. The BITE memories store all the detected events concerning the last flights: failures, abnormal disengagements..., with the associated contexts concerning these events: concerned flight leg, date, GMT at the time of the failure.... The DMCs send complete messages corresponding to the failures in plain english language to the CFDIU. The messages are sent as soon as the failures are detected, isolated and stored in the BITE memory. They are displayed on request on the interactive Multipurpose Control and Display Units (MCDUs), which are located on the center pedestal. To read them, the crew presses the MCDU MENU mode key on the MCDU.
**ON A/C 001-049, 051-099, 101-102,
A menu is offered proposing: FMS, CFDS, ACARS, AIDS main functions.
**ON A/C 103-105,
A menu is offered proposing: FMS, CFDS, ACARS main functions.
R **ON A/C 106-149, 201-202, 211-299, 301-399, 401-499,
A menu is offered proposing: FMS, CFDS, AIDS main functions.
1EFF : ALL 1 31-69-00Page 1 1 1 Aug 01/05 1 1 1CES 1 **ON A/C 151-199, 203-210,
A menu is offered proposing: FMS, CFDS main functions.
**ON A/C ALL
The crew presses the line key adjacent to the chosen function (CFDS in our case). The MCDU then displays the list of the LRUs for which a fault has been recorded during the flight, the EIS items of equipment for our concern. In addition, on the ground, the maintenance teams have the possibility to read the events recorded during the last flight legs, therefore to have an history of the system behaviour, by means of more detailed menus displayed on the MCDUs in the maintenance or menu mode. These menus are elaborated by the DMCs and sent to the CFDIU. For that purpose, a dialog between the CFDIU and the chosen equipment (DMC 1 or 2 or 3) is made possible by pressing the appropriate line keys on the MCDU, a given key addressing a given item of the displayed DMC menu.
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