D. Prepare for Test
 S 865-002
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 015-003

 (2)  
Remove the shorting plug from the system test plug on the P18 panel.

 S 485-004

 (3)  
Use the adapter cable to connect the portable tester to the system test plug on the P18 panel.

 S 865-007

 (4)  
Set the switches on the portable tester to these positions:

 SWITCH______ POSITION POWER ON WORD as designated in test SUBFRAME as designated in test INPUT ARINC INPUT DATA DATA PARAMETER SYNC B OCTAL DISPLAY 12 BIT
 S 865-009
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (5)  Supply hydraulic power to systems A and B (Ref 29-15-00/201).
 E. Position Sensor Test
 S 865-010
 (1)  
Make sure the TEST--NORMAL switch for the flight data recorder is in the TEST position.

 S 865-011

 (2)  
Make sure the control column is in the neutral position (Ref 27-31-00-501).

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A 737-300/400/500MAINTENANCE MANUAL
 S 865-075

 (3)  BEJ 113;
 Set the portable tester to SUBFRAME 0, WORD 13.
 S 865-070
 (4)  BEJ 101-112;
 Set the portable tester to SUBFRAME 0, WORD 21.
 S 215-018
 (5)  Make sure the portable tester display is 0000.
 S 825-019
 (6)  If the display is not 0000, do these steps:
 (a)  Turn off the hydraulic pump switches A and B and the flight
 control hydraulic switches A and B (Ref 29-15-00/201).
 (b)  Open the forward access door 1103.
 (c)  Loosen the two sensor clamp screws.
 (d)  Hold the cable drum and turn the sensor until the mark on the
 shaft aligns with the mark on the sensor.
 NOTE:____ No special position of the aligned marks is necessary.
 (e)  Turn the sensor to get a display of 0000 on the portable
 tester.
 (f)  Tighten the clamp screws to 30-35 pound-inches.
 S 865-020

 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (7)  
Supply pressure to hydraulic systems A and B (Ref 29-15-00/201).

 S 865-021

 (8)  
Move the control column to the positions shown below.

 NOTE:____Do not use too much force on the control column. If you use too much force on the control column, you will not see the correct values.
 S 215-022
 (9)  Make sure the portable tester display agrees with the values in the table.
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A
737-300/400/500MAINTENANCE MANUAL
 ~............................................................ | CAPTAINS CONTROL | PORTABLE TESTER | | COLUMN POSITION | DISPLAY | .............................................................. | FULL FWD (against stop) | 6420 to 6716 (nominal 6557) | .............................................................. | FULL AFT (against stop) | 1142 to 1440 (nominal 1301) | 2..............................….............................1
 F. Put the Airplane to its Usual Condition
 S 865-023
 (1)  
　
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