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CHECKS. THE 115 VAC IN THE CONNECTOR CAN CAUSE INJURY TO PERSONS AND
DAMAGE TO EQUIPMENT.
(9) Use a multimeter, STD-1231 to measure the voltage on connector D700 between pin 8 and the
surrounding structure.
(a) Make sure that the voltage on pin 8 is less than 2 VAC.
SUBTASK 27-41-98-860-009
(10) Move the stab trim switches on the control wheel to the NOSE UP position and hold.
NOTE: The same stab trim switches (captain’s or first officer’s) should be used during this
procedure.
SUBTASK 27-41-98-820-005
WARNING: BE SURE NOT TO TOUCH ADJACENT PINS IN CONNECTOR D700 DURING VOLTAGE
CHECKS. THE 115 VAC IN THE CONNECTOR CAN CAUSE INJURY TO PERSONS AND
DAMAGE TO EQUIPMENT.
(11) Use a multimeter, STD-1231 to measure the voltage on connector D700 between pin 7 and the
surrounding structure.
(a) Make sure that the voltage on pin 7 is less than 2 VAC.
SUBTASK 27-41-98-860-010
(12) Release the stab trim switches.
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SUBTASK 27-41-98-860-011
(13) Move the stab trim switches on the control wheel to the NOSE DN position and hold.
SUBTASK 27-41-98-820-006
WARNING: BE SURE NOT TO TOUCH ADJACENT PINS IN CONNECTOR D700 DURING VOLTAGE
CHECKS. THE 115 VAC IN THE CONNECTOR CAN CAUSE INJURY TO PERSONS AND
DAMAGE TO EQUIPMENT.
(14) Use a multimeter, STD-1231 to measure the voltage on connector D700 between pin 6 and the
surrounding structure.
(a) Make sure that the voltage on pin 6 is less than 2 VAC.
SUBTASK 27-41-98-860-012
(15) Release the stab trim switches.
SUBTASK 27-41-98-020-012
(16) Connect the D700 connector to the stabilizer trim motor M1659, (Figure 501).
SUBTASK 27-41-98-010-007
(17) Connect the D40616 connector on the Forward Nose Wheel Well Panel (114AW), to the J4
junction box.
SUBTASK 27-41-98-700-001
(18) Clear the internal monitoring faults of the stabilizer trim motor, if any, by doing the following
steps:
(a) Open this circuit breaker:
CAPT Electrical System Panel, P18-1
Row Col Number Name
C 2 C00849 AFCS STABILIZER TRIM
(b) Wait a minimum of 5 seconds.
(c) Close this circuit breaker:
CAPT Electrical System Panel, P18-1
Row Col Number Name
C 2 C00849 AFCS STABILIZER TRIM
SUBTASK 27-41-98-020-013
(19) Remove the safety tags and close these circuit breakers:
F/O Electrical System Panel, P6-2
Row Col Number Name
B 10 C00207 FLIGHT CONTROL STAB TRIM CONT
D 10 C00840 FLIGHT CONTROL STAB TRIM ACTUATOR
SUBTASK 27-41-98-700-002
(20) Do a test of the high (flaps down) stabilizer trim rate:
(a) Move the stab trim switches on the control wheel to the NOSE UP (stabilizer leading edge
down) position and hold until the stabilizer stops.
(b) Do the following to measure the time it takes for the stabilizer to move from the leading
edge down position to the leading edge up position:
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-41-98
Page 504
Feb 10/2007
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BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
1) Move the stab trim switches on the control wheel to the NOSE DOWN position and hold
until the stabilizer stops.
2) Make sure that the time from the start to stop of stabilizer movement is between 31 and
39 seconds.
SUBTASK 27-41-98-020-014
(21) Do this task: Retract the Trailing Edge Flaps, TASK 27-51-00-860-804.
SUBTASK 27-41-98-020-015
(22) Move the stabilizer to 4 units of trim, or more.
SUBTASK 27-41-98-700-003
(23) Do a test of the low (flaps up) stabilizer trim rate:
(a) Move the stab trim switches on the control wheel to the NOSE DOWN (stabilizer leading
edge up) position and hold until the stabilizer stops.
(b) Do the following to measure the time it takes for the stabilizer to move from the leading
edge up position to the leading edge down position:
1) Move the stab trim switches on the control wheel to the NOSE UP position and hold
until the stabilizer stops.
2) Make sure that the time from the start to stop of stabilizer movement is between 46 and
56 seconds.
G. Restore the Airplane to Normal
SUBTASK 27-41-98-010-008
(1) Close these access panels:
Number Name/Location
114AW Forward Nose Wheel Well Panel
311BL Stabilizer Trim Access Door
SUBTASK 27-41-98-010-011
(2) Install the sculpted ceiling panels at STA 887 and STA 907.
NOTE: Do this task: Sculptured Ceiling Panel Installation, TASK 25-21-45-400-801.
　
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