(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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