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(Figure 501)
A. References
Reference Title
24-22-00-860-811 Supply Electrical Power (P/B 201)
24-22-00-860-812 Remove Electrical Power (P/B 201)
25-21-45-000-801 Sculptured Ceiling Panel Removal (P/B 401)
25-21-45-400-801 Sculptured Ceiling Panel Installation (P/B 401)
27-51-00-860-803 Extend the Trailing Edge Flaps (P/B 201)
27-51-00-860-804 Retract the Trailing Edge Flaps (P/B 201)
B. Tools/Equipment
Reference Description
STD-1231 Multimeter - Standard
C. Location Zones
Zone Area
311 Area Aft of Pressure Bulkhead - Left
312 Area Aft of Pressure Bulkhead - Right
D. Access Panels
Number Name/Location
114AW Forward Nose Wheel Well Panel
311BL Stabilizer Trim Access Door
E. Prepare for the Test
SUBTASK 27-41-98-010-003
(1) Remove the sculpted ceiling panels at STA 887 and STA 907 on the right-hand side of the
passenger cabin
NOTE: Do this task: Sculptured Ceiling Panel Removal, TASK 25-21-45-000-801.
SUBTASK 27-41-98-760-001
(2) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-41-98-840-001
(3) Make sure that the following switches are set to the NORM (or guarded) position:
(a) The STAB TRIM MAIN ELEC (S272) cutout switch.
(b) The Column Actuated Stabilizer Trim Override (S847) switch.
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SUBTASK 27-41-98-020-009
(4) Remove the safety tag and close this circuit breaker:
F/O Electrical System Panel, P6-2
Row Col Number Name
B 10 C00207 FLIGHT CONTROL STAB TRIM CONT
SUBTASK 27-41-98-020-010
(5) Open this circuit breaker and install safety tag:
F/O Electrical System Panel, P6-2
Row Col Number Name
D 10 C00840 FLIGHT CONTROL STAB TRIM ACTUATOR
SUBTASK 27-41-98-010-004
(6) Open these access panels:
Number Name/Location
114AW Forward Nose Wheel Well Panel
311BL Stabilizer Trim Access Door
SUBTASK 27-41-98-020-011
(7) Disconnect the D700 connector from the stabilizer trim motor M1659, (Figure 501).
SUBTASK 27-41-98-860-004
WARNING: MAKE SURE PERSONS AND EQUIPMENT ARE AWAY FROM THE TRAILING EDGE
FLAPS AND THE LEADING EDGE FLAPS AND SLATS. THE FLAPS AND SLATS CAN
MOVE SUDDENLY. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO
EQUIPMENT.
(8) Extend the flaps to the FLAPS 1 position, do this task: Extend the Trailing Edge Flaps,
TASK 27-51-00-860-803
F. R850 Horizontal Stabilizer Interlock Relay Test
SUBTASK 27-41-98-860-005
(1) 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 27-41-98-820-001
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.
(2) 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 more than 2 VAC.
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SUBTASK 27-41-98-820-002
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.
(3) 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 more than 2 VAC.
SUBTASK 27-41-98-860-006
(4) Release the stab trim switches.
SUBTASK 27-41-98-860-007
(5) Move the stab trim switches on the control wheel to the NOSE DN position and hold.
SUBTASK 27-41-98-820-003
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.
(6) 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 more than 2 VAC.
SUBTASK 27-41-98-860-008
(7) Release the stab trim switches.
SUBTASK 27-41-98-010-006
(8) Disconnect the D40616 connector on the Forward Nose Wheel Well Panel (114AW), from the J4
junction box.
SUBTASK 27-41-98-820-004
WARNING: BE SURE NOT TO TOUCH ADJACENT PINS IN CONNECTOR D700 DURING VOLTAGE
　
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