(d)  
Make sure the portable tester display is 2022 or 2023.

 (e)  
Set the F/O VHF NAV control panel to the MAN position.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 BEJ 101-112, 114-999; ú  31-24-02
 ú ú 12 Page 529 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (f)  
Tune the F/O VHF NAV to 109.5 MHz.

 (g)  
Set the portable tester to SUBFRAME 2, WORD 31.

 (h)  
Make sure the portable tester display is 2250 or 2251.

 S 865-254
 (3)  If you will do no more tests, then do this task:
 "Put the Airplane to its Usual Condition."

 TASK 31-24-02-735-335
 20. DADC Bus Signals Test
_____________________
 NOTE: Keep the air data system on for more than 30 minutes before you do
____
 this test.

 A. General
 (1)  In this test it is necessary to put the DADC into the TEST mode. You can use one of three methods to put the DADC into the TEST mode. The method you use depends on the type of DADC that is on the airplane.
 (a)  
AIRPLANES WITH A TEST SELECT SWITCH ON THE DADC; Put the TEST SELECT switch to the FUNCTION position. 1) Push and hold the TEST button.

 (b)  
AIRPLANES WITH A TEST--HISTORY SWITCH ON THE DADC; Put the TEST--HISTORY switch in the TEST position.

 (c)  
AIRPLANES WITH A SELF-TEST SWITCH ON THE DADC; Put the SELF-TEST switch in the TEST position.

 B. Access
 (1)  Location Zones
 101 Control Cabin - Left
 102 Control Cabin - Right

 C. Procedure
 S 865-336
 (1)
Make sure you did the Prepare For Input Parameter Test task.

 S 735-337

 (2)  
Do this test of the DADC signals:

 (a)
Set the portable tester to SUBFRAME 0, WORD 33.

 (b)  
Put the DADC-L TEST HISTORY switch to the test mode.

 (c)  
Make sure the portable tester display is 6560 to 7020.

 S 865-338
 (3)  If you will do no more tests, then do this task:
 "Put the Airplane to its Usual Condition."

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 BEJ 101-112, 114-999; ú  31-24-02
 ú ú 12 Page 530 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 TASK 31-24-02-735-385
 21. EFIS Control Panel Digital Bus Signals Test___________________________________________
 A.  Special Tools and Equipment
 (1)  ARINC 429 test set
 B.  References
 (1)  AMM 31-24-22/401, Flight Data Acquisition Unit
 C.  Access
 (1)  Location Zones
 101 Control Cabin - Left
 102 Control Cabin - Right

 D.  Procedure
 S 865-529
 (1)
Make sure you did the Prepare For Input Parameter Test task.

 S 735-811

 (2)  
Do this test of the digital signals from the EFIS Control Panel:

 (a)  
Open this circuit breaker:

 1)  P6-1 Panel a) EFIS CONT PNL RIGHT

 (b)  
Set the MODE SELECT switch on the left EFIS control panel to the MAP MODE position.

 (c)  
Set the portable tester to SUBFRAME 2, WORD 61.

 (d)  
Make sure BIT 3 on the portable tester is on (1).

 (e)  
Set the portable tester to SUBFRAME 1, WORD 61.

 (f)  
Make sure BIT 4 on the portable tester is off (0).

 (g)  
Set the MODE SELECT switch on the left control panel to the PLAN MODE position.

 (h)  
Set the portable tester to SUBFRAME 2, WORD 61.

 (i)  
Make sure BIT 3 on the portable tester is off (0).

 (j)  
Set the portable tester to SUBFRAME 1, WORD 61.

 (k)  
Make sure BIT 4 on the portable tester is on (1).

 (l)  
　
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