status annunciators (P1 and P3) come on. 2) Make sure that the display shows EXISTING FAULTS?

 (c)  
Push the YES key on the keypad.

 1)  If the display shows NO FAULTS, then do these steps: a) Push the MENU key on the keypad. b) Make sure that the display shows EXISTING FAULTS? c) Omit the subsequent nine steps of this procedure.
 NOTE:  The subsequent nine steps show how to reset
____ latches. If there are no faults, then there are no latches to reset. Continue the procedure at the step to push and release the down arrow key until the display shows GROUND TESTS?
 2)  If the display shows a fault message, then do these steps: a) Push and release the down arrow key until the display
 shows RESET LATCHES? b) Push the YES key on the keypad. c) Make sure that the display shows ARE YOU SURE? d) Push the YES key on the keypad. e) Make sure that the display shows RESET IN PROGRESS. f) After ten seconds, make sure that the display shows a
 message.
 NOTE:  The display will show NO FAULTS, or existing faults. You should correct existing faults before you do the rest of this test.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH 10-62253 YAW DAMPER ú

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 3)  Push the MENU key on the keypad. a) Make sure that the display shows EXISTING FAULTS?
 (d)  
Push and release the down arrow key until the display shows GROUND TESTS?

 (e)  
Push the YES key on the keypad.
 1) Make sure that the display shows SELF TEST?

 (f)  
Push and release the down arrow key until the display shows PRGM PIN TEST?

 (g)  
Push the YES key on the keypad.
 1) Make sure that the display shows APL type XXX?

 NOTE:____The X's are a number. The number is the airplane type. The airplane type is 300/400, or 500.
 2)  Make sure that the airplane type shown on the display is the same as the airplane you are on.
 NOTE: If the airplane type is not the same as the airplane
____ you are on, the program pins are not correct. The program pins must be changed.
 (h)  
Push the YES key on the keypad.

 1)  Make sure that the display shows these indications: a) CONFIRM APL type b) 737-XXX

 (i)  
If the airplane type is correct, push the YES key on the keypad. 1) The display will show STORING CONFIG. 2) Make sure that the display shows TEST PASS.

 S 745-019
 (9)  Do the yaw damper coupler self-test:
 (a)  
Push the ON/OFF key on the keypad. 1) Make sure that the display shows TURN DISPLAY OFF?

 (b)  
Push the YES key on the keypad. 1) Make sure that the display momentarily shows DISPLAY OFF.

 (c)  
After 15 seconds, push the ON/OFF key on the keypad.
 1) Make sure that the display shows ENTER BITE?

 (d)  
Push the YES key on the keypad within ten seconds. 1) Make sure that the A/P warning lights on the autoflight

 status annunciators (P1 and P3) come on. 2) Make sure that the display shows EXISTING FAULTS?

 (e)  
Push and release the down arrow key until the display shows GROUND TESTS?

 (f)  
Push the YES key on the keypad.
 1) Make sure that the display shows SELF TEST?

 (g)  
Push the YES key on the keypad.

 1)  Make sure that the display shows these indications: a) WARNING! WARNING! b) RUDDER MOVEMENT c) RUDDER CLEARED?
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH 10-62253 YAW DAMPER ú

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737-300/400/500MAINTENANCE MANUAL
 (h)  
Make sure that all personnel are clear of the rudder.

 WARNING:_______THE STEPS THAT FOLLOW CAN CAUSE THE RUDDER TO MOVE. MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE RUDDER BEFORE YOU DO THESE STEPS. RUDDER MOVEMENT CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
　
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