B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 27-34-00-710-001 Operational Test of the Elevator and Hydraulic
 Actuation 29-10-00-864-003 Depressurize the Blue Hydraulic System 29-23-00-864-001 Depressurize the Green and Yellow Hydraulic Systems
 after Operation of the PTU 29-24-00-864-001 Depressurize the Yellow Hydraulic System 55-13-11-000-001 Removal of the THS Trailing Edge Access Panels 55-13-11-400-001 Installation of the THS Trailing Edge Access Panels
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 27-34-00-991-004 Fig. 401
 **ON A/C 301-399,
 27-34-00-991-004-A Fig. 401A
 **ON A/C ALL
 3. Job Set-up
__________
 Subtask 27-34-00-860-068
 A. Aircraft Maintenance Configuration
 (1)
 Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).

 (2)
 On the overhead panel 23VU, release the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches (on these pushbutton switches, the OFF legends come on).

 (3)
 On the overhead panel 24VU, release the FLT CTL/ELAC 2, FLT CTL/SEC 2 and FLT CTL/SEC 3 pushbutton switches (on these pushbutton switches, the OFF legends come on).

 (4)
 Depressurize the aircraft hydraulic systems:

 (a) For the left elevator:
 -Depressurize the Green and Blue systems (Ref. TASK 29-23-00-864-001) (Ref. TASK 29-10-00-864-003).
 (b) For the right elevator:
 -Depressurize the Yellow and Blue systems (Ref. TASK 29-24-00-864-001) (Ref. TASK 29-10-00-864-003).
 Subtask 27-34-00-010-055
 B. Get Access
 (1)
 Put the access platform in position:

 (a)
 In the zone 334 for the left elevator.

 (b)
 In the zone 344 for the right elevator.

 (2)
 Open the THS trailing edge access panels (Ref. TASK 55-13-11-000-001):

 (a)
 334DB for the left elevator.

 (b)
 344DB for the right elevator.

 4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (Ref. Fig. 401/TASK 27-34-00-991-004)
 **ON A/C 301-399,

 (Ref. Fig. 401A/TASK 27-34-00-991-004-A)

 Elevator Servocontrols Position-Transducers
 Figure 401/TASK 27-34-00-991-004

R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 27-34-00Page 404 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1R Elevator Servocontrols Position-Transducers R Figure 401A/TASK 27-34-00-991-004-A

R 1EFF : 301-399, 1 27-34-00Page 405 1 1 May 01/04 1 1 1CES 1R **ON A/C ALL

 Subtask 27-34-00-040-050
 A. Connection of the Spare Transducer:
 (1)
 If the servocontrol has two transducers:

 (a) Swap the connection of the electrical connectors on the transducers.

 (2)
 If the servocontrol has three transducers:

 (a)
 Remove the electrical connector (1) from the defective transducer.

 (b)
 Remove the blanking cap from the new transducer and put it on the defective transducer.

 (3) Connect the electrical connector (1) to the new transducer.
 Subtask 27-34-00-710-052

 B. Test
 (1)
 On the overhead panel 23VU, push the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches (on these pushbutton switches, the OFF legends go off).

 (2)
 On the overhead panel 24VU, push the FLT CTL/ELAC 2, FLT CTL/SEC 2 and FLT CTL/SEC 3 pushbutton switches (on these pushbutton switches, the OFF legends go off).

 (3)
 Do the operational test of the elevators (Ref. TASK 27-34-00-710-001).

 5. Close-up
________
 Subtask 27-34-00-410-055

 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.
R (2) Close the THS trailing edge access panels (Ref. TASK 55-13-11-400-R 001):
 (a)
 334DB for the left elevator.

 (b)
 344DB for the right elevator.

 (3) Remove the access platform(s).
 Subtask 27-34-00-860-069

 B. Put the aircraft back to its initial configuration.
 (1)
 Make an entry in the log-book.
　
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