(6)
 On the MCDU, fully decrease the brightness of the MCDU screen (display off).

 Subtask 34-36-00-862-053
 B. De-energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-862-002).

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 TASK 34-36-00-710-002 Operational Test of the GPS
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002  Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 34-10-00-860-004 IR Alignment Procedure
 3. Job Set-up
__________ Subtask 34-36-00-860-058
 A. Aircraft Maintenance Configuration
 NOTE : Do this test in an open area (not in the hangar).

____
 (1)
 Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 (2)
 Do the IR alignment procedure (Ref. TASK 34-10-00-860-004).

 (3)
 On the center pedestal, on the SWITCHING panel 8VU, make sure that the ATT HDG selector switch is at NORM.

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 Subtask 34-36-00-865-059
 B. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU NAV/MMR/1 42RT1 G12

R  **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
 121VU COM NAV/MMR/2  42RT2 L07
 **ON A/C 001-049, 051-061, 101-105, 201-203,
 121VU COM NAV/MMR/2  42RT2 K09
 **ON A/C ALL
 4. Procedure
_________
 Subtask 34-36-00-710-056
 A. Operational Test of the GPS
 NOTE : The actions and the results of this procedure occur on the MCDU
____
 used.

 -------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------Test of GPS data acquisition with IRS aligned
 1. On the MCDU:  On the MCDU:
 -push the DATA mode key. - the DATA INDEX page comes into view.
 2. On the MCDU, on the DATA INDEX  On the MCDU: page: - the GPS MONITOR page comes into view:
 -push the line key adjacent to the GPS MONITOR indication. NOTE : If you do this test after
____ replacement of the MMR, one minute to twenty minutes are necessary to get the GPS data on the MCDU.
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 -------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
3. On the overhead panel, on the ADIRS CDU:
-set the DISPLAY DATA selector switch to PPOS.
4.
 Open the circuit breakers 42RT1 and 42RT2.

5.
 Close the circuit breakers 42RT1 and 42RT2.

-
the NAV indication is shown below the MODE indication

 -
the number of satellites tracked is shown below the SAT indication

 -
the related values come into view below the GPS POSITION, GPS ALT, MERIT and GS indications: . the GPS 1 and the GPS 2 POSITION indications give the latitude/longitude of the aircraft

 -make sure that the values of the two GPS positions are approximately the same.
 On CAPT and F/O NDs:
 -the white GPS PRIMARY indication comes into view
On the MCDU, on the GPS MONITOR page:
-make sure that the GPS position dataare approximately the same as theADIRS position data on the ADIRS CDU.
On the upper ECAM DU:
-the NAV GPS 1 FAULT and NAV GPS 2 FAULT warnings come into view (the NAV ILS 1 FAULT and NAV ILS 2 FAULT are shown too).
 On the MCDU, on the GPS MONITOR page: . all GPS data below the GPS POSITION, GPS ALT, TTRK, GS and MERIT indications for the two GPS, are cleared.
 On CAPT and F/O NDs:
 -
the amber GPS PRIMARY LOST indication is shown.

On the upper ECAM DU:

-
the NAV GPS 1 FAULT and NAV GPS 2 FAULT warnings go out of view (the NAV ILS 1 FAULT and NAV ILS 2 FAULT warnings go out of view too).
　
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