C. Procedure
 S 865-630
 (1) Make sure you did the Prepare For Input Parameter Test task.
 S 735-631
 WARNING: PUT A SAFETY OBSERVER NEAR THE THRUST REVERSER WHEN YOU DO THIS
_______ TEST. THE THRUST REVERSER CAN CAUSE INJURY TO PERSONS WHEN IT MOVES.
 (2)  Do this test of the thrust reverser signals:
 (a)  
Remove the safety pins from each Thrust Reverser isolation valve at forward end of each Air Conditioning Bay.

 (b)  
Make sure both Thrust reverser handles are in full down position.

 (c)  
Make sure both hydraulic pumps A & B are on.

 (d)  
Set the portable tester to the SUBFRAMEs and WORDs shown in the table.

 (e)  
Operate the thrust reversers to get the conditions in the table (AMM 78-31-00/501).

 (f)
Make sure the portable tester displays agree with the values in the table.

 NOTE:  Use the Operational Test - Thrust Reverser System procedure with the engines off.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 ~...................................................................... | | | | TEST CONDITION | | TESTER | | WORD | S/F | BIT | (DISCRETE STATE) | STATE | DISPLAY | ........................................................................ | 19 | 0 | 1 | T/R UNLOCK L OUTBOARD | LT OFF | 1 | | | | | | LT ON | 0 | | | | | | | | | 60 | 0 | 2 | T/R UNLOCK R OUTBOARD | LT OFF | 1 | | | | | | LT ON | 0 | ........................................................................ | 61 | 0 | 1 | T/R UNLOCK L INBOARD | LT OFF | 1 | | | | | | LT ON | 0 | | | | | | | | | 56 | 0 | 1 | T/R UNLOCK R INBOARD | LT OFF | 1 | | | | | | LT ON | 0 | ........................................................................ | 16 | 0 | 1 | T/R DEPLOYED L OUTBOARD| DEPLOY | 0 | | | | | | NOT DEPLOY | 1 | | | | | | | | | 59 | 0 | 1 | T/R DEPLOYED R OUTBOARD| DEPLOY | 0 | | | | | | NOT DEPLOY | 1 | ........................................................................ | 60 | 0 | 1 | T/R DEPLOYED L INBOARD | DEPLOY | 0 | | | | | | NOT DEPLOY | 1 | | | | | | | | | 16 | 0 | 2 | T/R DEPLOYED R INBOARD | DEPLOY | 0 | | | | | | NOT DEPLOY | 1 | 2......….......….......…........................…............….........1
 S 865-632
 (3)  
Put the thrust reversers in the usual condition (AMM 78-31-00/501).

 S 865-633

 (4)  
If you will do no more tests, then do this task:
 "Put the Airplane to its Usual Condition."

 TASK 31-24-01-735-638
 51. Yaw Damper Engage Signal Test_____________________________
 A. Access
 (1)  Location Zones
 101 Control Cabin - Left
 102 Control Cabin - Right

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 B. Procedure
 S 865-639
 (1)
Make sure you did the Prepare For Input Parameter Test task.

 S 735-640

 (2)
Do this test of the engage signals from the yaw damper:

 (a)  
Set the portable tester to SUBFRAME 0, WORD 3.

 (b)  
Engage the YAW DAMPER switch on the P5-3 panel.

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

 (d)  
Disengage the YAW DAMPER switch.

 (e)  
Make sure the BIT 1 light on the portable tester goes out.

 S 865-641
 (3)  If you will do no more tests, then do this task: "Put the Airplane to its Usual Condition."
 TASK 31-24-01-865-642
 52. Put the Airplane to its Usual Condition_______________________________________
 A. Reference
 (1)  AMM 24-22-00/201, Manual Control
　
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