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 ú ú 02 Page 506 ú Jul 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 865-134
 (12)
 Select XXX.05 MHz other than local VHF frequency on captain's control panel. Both RDDMI DME-1 readouts should display 150 |2 miles test distance. Captain's EHSI should also display test distance.

 S 865-142

 (13)
 Put the test set switches as follows:

 (a)  
X/Y to X

 (b)  
SLEW switches for 110 NM range

 (c)  
VELOCITY IN/OUT to IN

 (d)  
VELOCITY select switch to 600

 S 865-194
 (14)
 Put the test set X/Y switch to Y.  DME-1 should lock on and both RDDMI DME-1 readouts should track inboard. Captain's EHSI should also track inbound and be within | 2 NM of RDDMI readouts. Observe DME readouts for approximately 2 minutes.

 S 865-149

 (15)
 Put the test set switches as follows:

 (a)  
X/Y switch to X

 (b)  
VELOCITY select switch to RANGE

 (c)  
SLEW switches for 190 NM range. Wait 20 seconds before proceeding with test.

 (d)  
VELOCITY IN/OUT to OUT.

 (e)  
VELOCITY select switch to 600.

 S 865-150
 (16)
 Put the test set X/Y switch to Y.  DME-1 should lock on and both RDDMI DME-1 readouts should track outboard. Captain's EHSI should also track outboard and be within | 2 of RDDMI readouts. Observe DME readouts for approximately 2 minutes.

 S 865-156

 (17)
 Open INST XFMR-1 circuit breaker and make sure that both captain's RDDMI DME readouts are flagged. DME-1 readout on first officer's RDDMI should remain locked on.

 S 865-165

 (18)
 Open INST XFMR No. 2 circuit breaker.  Make sure both first officer's RDDMI DME readouts are flagged.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EFIS ú

 34-55-02
 ú ú 02 Page 507 ú Jul 12/99

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 865-172
 (19) To test DME No. 2, repeat Prepare to Test and DME System Test procedures using appropriate airplane switches and controls for DME system No. 2.
 NOTE: Be sure remote test set antenna is placed approximately 21
____
 inches from DME No. 2 antenna.

 S 865-174
 (20) Restore airplane and test set to original configuration and remove electrical power if no longer required (AMM 24-22-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EFIS ú

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 ú ú 02 Page 508 ú Jul 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 DME ANTENNA - REMOVAL/INSTALLATION
__________________________________
 1.  General
_______
 A.  This procedure has two tasks. One is the removal of the DME antenna. The other is the installation of the DME antenna. The installation task includes a test of the DME antenna.
 B.  Two DME antennas are installed on the airplane. The antennas are on the bottom centerline of the fuselage. The DME system No. 1 antenna is at station 468 and the DME system No. 2 antenna is at station 580 (Fig. 401).
 TASK 34-55-11-024-001
 2.  Remove the DME Antenna (Fig. 401)
______________________
 A.  Equipment
 (1) Aerodynamic smoother cutting tool - hardwood or plexiglass
 B.  Prepare for Removal
 S 864-040
 (1)  For the DME No. 1 and DME No. 2 system antennas, open the DME-1 and DME-2 circuit breakers on the P18 and P6 circuit breaker panels.
　
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