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 B. Activation of the Self-Test The self-test can be activated by pushing the TEST pushbutton switch as designed on the front panel LCD, if the test inhibit discrete is not active. A "TEST IN PROGRESS" message is displayed approximately one second after the TEST pushbutton is pressed. At the end of the self-test, either a TEST COMPLETE, NO FAILURES message screen or a TEST COMPLETE, FAILURES message screen is displayed. The TEST COMPLETE, NO FAILURES screen contains two pushbutton selections (MAINT and RETURN). The TEST COMPLETE, FAILURES screen also contains two pushbutton selections (MAINT and WHY?). For both screens, pressing the left (MAINT) pushbutton initiates the extented maintenance pages of the system for troubleshooting. The right (RETURN) pushbutton associated with the TEST COMPLETE, NO FAILURES screen returns the system to its normal mode screen. The right (WHY?) pushbutton associated with the TEST COMPLETE, FAILURES screen places the system in the display-failures mode where individual system failures (fault memory codes) are displayed, one per page.
 C. Activation of the Functional Test The functional test can be activated by pushing the line key adjacent to the TEST indication on the ILS maintenance sub-menu, under the following conditions: test inhibit discrete not active and A/C on ground. It is similar to the self-test except that the front panel display screens are not controlled to reflect the status of the unit, which is reported on the MCDU.
 NOTE : If the test cannot be initiated on ground on the MCDU (which means
____ that a fault affects either the LGCIU, the FMGC or the ILS), a TEST page comes into view on the MCDU. (Ref. Fig. 012, 013)
 1EFF : 001-004, 1 34-36-00Page 44 1 1 Config-1 May 01/05 1 1 1CES 1

 ILS - Maintenance Test Procedure R Figure 011
 1EFF : 001-004, 1 34-36-00Page 45 1 1 Config-1 May 01/05 1 1 1CES 1R ILS - Maintenance Test Procedure R Figure 011A

 1EFF : 051-060, 1 34-36-00Page 46 1 1 Config-1 May 01/05 1 1 1CES 1

 ILS Maintenance Test Procedure - Access to Sub-menus 4/5 R Figure 012
 1EFF : 001-004, 1 34-36-00Page 47 1 1 Config-1 May 01/05 1 1 1CES 1R ILS Maintenance Test Procedure - Access to Sub-menus 4/5 R Figure 012A

 1EFF : 051-060, 1 34-36-00Page 48 1 1 Config-1 May 01/05 1 1 1CES 1

 ILS Maintenance Test Procedure - Access to Sub-menus 5/5 R Figure 013
 1EFF : 001-004, 1 34-36-00Page 49 1 1 Config-1 May 01/05 1 1 1CES 1 1EFF : 051-060, 1 34-36-00Page 50 1 1 Config-1 May 01/05 1 1 1CES 1 1EFF : 001-004, 051-060, 1 34-36-00Page 51 1 1 Config-1 May 01/05 1 1 1CES 1R ILS Maintenance Test Procedure - Access to Sub-menus 5/5 R Figure 013A

R  **ON A/C 051-060, 
R  (Ref. Fig. 011A) 
R  A. Access to ILS Sub-Menu Functions 
R  It is possible to select the maintenance functions of the ILS receiver 1 
R  (2) by pressing the line key adjacent to the SYSTEM REPORT/TEST 
R  indication on the CFDS menu, and then selecting the relevant ILS on the 
R  NAV menu. 
R  After these actions, the ILS 1 (2) provides its own menu page and the 
R  sub-menu functions can then be chosen by the operator. 
R  B. Activation of the Receiver Face Test 
R  The receiver face test can be activated by pushing the TEST pushbutton 
R  switch on the receiver face, if the test inhibit discrete is not active. 
R  The sequence below is then generated on the receiver face. 
R  -------------------------------------------------------------------------------
R  | DURATION | Receiver face | 
R  |-----------------------------------------------------------------------------| 
R  | Approx. 3 s | LRU STATUS LED comes on red | 
R  | | CONTROL FAIL LED comes on red | 
R  | | | 
R  | Approx. 3 s | LRU STATUS LED comes on green | 
R  | | CONTROL FAIL LED comes on red | 
R  | | | 
R  | Approx. 10 s | LRU STATUS LED is off | 
R  | | CONTROL FAIL LED is off | 
R  -------------------------------------------------------------------------------
R  Depending on the outcome of the receiver face test, one of the following 
R  results is displayed: 
R  -------------------------------------------------------------------------------
R  | DURATION | Receiver face | 
R  |-----------------------------------------------------------------------------| 
R  | Approx. 30 s | If LRU and Control input pass: | 
R  | | LRU STATUS LED comes on green | 
R  | | CONTROL FAIL LED is off | 
　
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