tilt angle | 1 degree. 2) Make sure the intensity of the targets on the EHSIs near the airplane increase.

 (g)  
Turn the antenna TILT control on the WXR control panel in steps from minus 5 to 15.00 degrees. 1) Make sure the tilt messages on the EHSIs show the correct

 tilt angle | 2 degree.

 (h)  
Turn the antenna TILT control on the WXR control panel to 0 degrees.

 (i)  
If no more tests of weather radar are necessary, do the Weather Radar System Shutdown Procedures.

 I.  Ground Clutter Suppression Test
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EFIS ú

 34-41-02

 ú ú 08A Page 510 ú Nov 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 735-048
 WARNING: DO NOT OPERATE THE WEATHER RADAR WHILE FUEL IS ADDED OR REMOVED
_______ FROM THE AIRPLANE. DO NOT TRANSMIT RF ENERGY WHILE FUEL IS ADDED OR REMOVED IN AREA 200 FEET OR LESS OF THE ANTENNA. THIS CAN CAUSE AN EXPLOSION.
 DO NOT OPERATE THE WEATHER RADAR IN A HANGAR OR OTHER ENCLOSURE.
 DO NOT OPERATE THE WEATHER RADAR WHILE THE AIRPLANE IS IN A HANGAR OR OTHER ENCLOSURE. MAKE SURE NO PERSONS ARE IN THE AREA 15 FEET OR LESS FROM THE ANTENNA WHEN IT TRANSMITS RF ENERGY. RF ENERGY CAN CAUSE INJURY TO PERSONS.
 (1)  Do the ground clutter suppression test.
 (a)  
Set the switches on the WXR control panel as follows: 1) WX MODE switch - Pushed 2) IDNT switch - off

 (b)  
Turn the antenna TILT control on the WXR control panel to get close-in ground returns the EHSIs.

 (c)  
Set the IDNT switch on the WXR control panel to the on position. 1) Make sure the radar targets go out of view on the EHSIs.

 (d)  
Set the IDNT switch on the WXR control panel to the off position. 1) Make sure the EHSIs show the radar targets.

 (e)  
If no more tests of the weather radar are necessary, do the Weather Radar System Shutdown Procedures.

 J. Stabilization Test
 S 735-018
 (1)  Do the stabilization test.
 (a)  Align the inertial reference system in the NAV mode (AMM 34-28-01/201). 1) Make sure the ATT flags on the captain's and the first
 officer's EADIs are not in view.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EFIS ú

 34-41-02
 ú ú 08A Page 511 ú Nov 12/00

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 WARNING:_______ DO NOT OPERATE THE WEATHER RADAR WHILE FUEL IS ADDED OR
 REMOVED FROM THE AIRPLANE.  DO NOT TRANSMIT RF ENERGY
 WHILE FUEL IS ADDED OR REMOVED IN AREA 200 FEET OR LESS OF
 THE ANTENNA.  THIS CAN CAUSE AN EXPLOSION.
 DO NOT OPERATE THE WEATHER RADAR IN A HANGAR OR OTHER
 ENCLOSURE.
 DO NOT OPERATE THE WEATHER RADAR WHILE THE AIRPLANE IS IN
 A HANGAR OR OTHER ENCLOSURE.  MAKE SURE NO PERSONS ARE IN
 THE AREA 15 FEET OR LESS FROM THE ANTENNA WHEN IT
 TRANSMITS RF ENERGY.  RF ENERGY CAN CAUSE INJURY TO

 PERSONS.

 (b)  
Push the WX MODE switch on the WXR control panel.

 (c)  
Make sure the STAB switch on the WXR control panel is set to the on position. 1) Make sure that the WXR status and FAIL message on the two

 EHSI's are not shown.

 (d)  
Push the STAB switch to remove stabilization. 1) Make sure the WXR and STAB messages are shown on the EHSIs.

 (e)  
Push the STAB switch to on.

 1)  Make sure the WXR and STAB messages are removed from the EHSIs.

 (f)  
Set the IRS select switch to the NORMAL position.

 (g)  
Set these switches on the inertial reference system display unit (ISDU) as follows. 1) Set the SYS DSPL switch to the L position. 2) Set and hold the DSPL SEL switch to the TEST position.

 NOTE: You may need to hold the switch for up to 60
____ seconds.

 a)  Make sure the WXR ATT message shows.
 3)  Release the DSPL SEL switch to the TK/GS position. a) Make sure the WXR ATT message is removed.
　
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