3. Job Set-up__________
Subtask 34-41-00-010-052
A. Get Access
WARNING : DO NOT OPEN THE RADOME IF THE WIND SPEED IS MORE THAN 35 KNOTS._______
NOTE : Two persons are necessary to open the radome.____
(1) Put the access platform in position below the radome.
(2) Open the radome 110AL (Ref. TASK 53-15-11-010-001).
(3) Make sure that the retaining arms of the radome lock correctly.
Subtask 34-41-00-480-050
B. In the radome, on the weather radar antenna:
(1) Release the quick-disconnect fastener to disconnect the waveguide assembly from the antenna drive unit.
(2) Remove the O-ring.
R R (3) Install the DUMMY LOAD (98F34403500000) (the cone in the down direction) on the waveguide assembly.
R (4) Do not install the O-ring between the waveguide assembly and the dummy load.
R (5) Make sure that there is no space between the waveguide assembly and the dummy load and that their connection is correct.
R (6) Remove the two screws that prevent operation of the AZ and EL selector switches on the antenna drive unit.
R (7) Make sure that the AZ and EL selector switches are at ON and that the antenna is free to move in azimuth and in elevation.
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C. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU COM NAV/RADAR/1 5SQ1 K13
R **ON A/C 051-099,
R 121VU COM NAV/RADAR/2 5SQ2 K14 R **ON A/C ALL
Subtask 34-41-00-860-062
D. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
(2)
Do the EIS start procedure (EFIS only) (Ref. TASK 31-60-00-860-001).
(3)
Do the ADIRS start procedure (Ref. TASK 34-10-00-860-002).
(4)
On the EFIS control panels of the FCU:
-set the mode selector switches to ARC.
(5)
On the EFIS switching panels 417VU and 418VU:
-set the outer ND potentiometer to the middle position.
(6)
On the center pedestal, on the weather radar control unit, set:
-
the system switch to OFF
-
the GAIN potentiometer to AUTO (or CAL)
-
the TILT selector switch to 0.
-
the mode selector switch to WX
-
the windshear mode switch to OFF.
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4. Procedure
_________
Subtask 34-41-00-720-050
A. Functional Test of the Tilt Control of the Antenna Drive Unit
NOTE : Two persons are necessary to do the test:
____ - one person must be in the cockpit to set the switches on the weather radar control unit
-another person must be near the weather radar antenna to do the check of the tilt value on the indicator of the antenna drive unit.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the weather radar control Make sure that the antenna turns in
unit: azimuth.
- set the system switch to 1 (or
ON).
2. On the antenna drive unit: Make sure that the antenna scanning
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