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

 (e)  
Release the GND SENSING TEST switch.

 (f)  
Set the portable tester to SUBFRAME 0, WORD 20.

 (g)  
Make sure the BIT 1 light on the portable tester is off.

 (h)  
Push the NOSE SENSING test switch on the landing gear logic unit on the E11 shelf.

 (i)  
Make sure the BIT 1 light on the portable tester is on.

 S 865-455
 (3)  If you will do no more tests, then do this task:
 "Put the Airplane to its Usual Condition."

 TASK 31-24-01-735-456
 30. A/P Warning Signals Test________________________
 A. Access
 (1)  Location Zones
 101 Control Cabin - Left
 102 Control Cabin - Right

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 31-24-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 B. Procedure
 S 865-457
 (1)
Make sure you did the Prepare For Input Parameter Test task.

 S 865-458

 (2)  
Open these circuit breakers:

 (a)  P6-2 Panel
 1) AFCS-B MACH TRIM DC
 2) AFCS-B SENSOR EXC AC
 3) AFCS-B ENGA INTLK
 4) AFCS-B MACH TRIM AC
 5) AFCS-B FCC DC

 S 735-459
 (3)  Do this test of the signals from the captain's A/P warning light:
 (a)  
Set the portable tester to SUBFRAME 0, WORD 21.

 (b)  
Get the FMC MAINT PAGE on the CDU.

 (c)  
Push the line select key next to the DFCS BITE prompt.

 (d)  
Make sure the captain's A/P warning light is on.

 (e)  
Make sure the BIT 2 light on the portable tester is off.

 (f)  
Push the INIT REF key on the FMC CDU.

 (g)  
Make sure the captain's A/P warning light is off.

 (h)  
Make sure the BIT 2 light on the portable tester is on.

 S 865-460
 (4)  Close these circuit breakers:
 (a)  P6-2 Panel
 1) AFCS-B MACH TRIM DC
 2) AFCS-B SENSOR EXC AC
 3) AFCS-B ENGA INTLK
 4) AFCS-B MACH TRIM AC
 5) AFCS-B FCC DC

 S 865-461
 (5)  Open these circuit breakers:
 (a)  P18-1 Panel
 1) AFCS-A ENGA INTLK

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. BEJ 113 ú

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 ú ú 20B Page 539 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 2) AFCS-A SENSOR EXC AC 3) AFCS-A MACH TRIM DC 4) AFCS-A MACH TRIM AC 5) AFCS-A FCC DC
 S 735-462
 (6)  Do this test of the signals from the F/O A/P warning light:
 (a)  
Set the portable tester to SUBFRAME 0, WORD 21.

 (b)  
Get the FMC MAINT PAGE on the CDU.

 (c)  
Push the line select key next to the DFCS BITE prompt.

 (d)  
Make sure the F/O A/P warning light is on.

 (e)  
Make sure the BIT 2 light on the portable tester is off.

 (f)  
Push the INIT REF button on the FMC CDU.

 (g)  
Make sure the F/O A/P warning light is off.

 (h)  
Make sure the BIT 2 light on the portable tester is on.

 S 865-463
 (7)  Close these circuit breakers:
 (a)  P18-1 Panel
 1) AFCS-A ENGA INTLK
 2) AFCS-A SENSOR EXC AC
 3) AFCS-A MACH TRIM DC
 4) AFCS-A MACH TRIM AC
 5) AFCS-A FCC DC

 S 865-464
 (8)  If you will do no more tests, then do this task: "Put the Airplane to its Usual Condition."
 TASK 31-24-01-735-465
 31. Alternate Flaps Signals Test____________________________
 A. Access
 (1)  Location Zones
 101 Control Cabin - Left
 102 Control Cabin - Right
　
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