(b)  
Push the key for <SPEED BRAKE XDUCER.

 (c)  
Do the interactive BITE test with instructions on the CDU.

 (d)  
Make sure that the fault messages do not show.

 S 414-013
 (3)  
Do this task to install the ceiling panel which you removed for access: "Install the Zone A Center Trough" (Ref 25-22-01/401).

 (4)
Do this task: "Remove Electrical Power" (AMM 24-22-00/201).

 S 864-009
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A
747-400 MAINTENANCE MANUAL
 COLUMN/RUDDER PEDAL POSITION DIGITIZER - REMOVAL/INSTALLATION
_____________________________________________________________
 1.  General_______
 A.  There are two tasks in this procedure. There is one task for the removal and one task for the installation of the column/rudder pedal position digitizer circuit card YMLA10 (which is referred to as the "card YMLA10"). The procedure has these parts:
 (1)
The removal of the card YMLA10

 (2)
The installation of the card YMLA10

COLUMN/RUDDER PEDAL POSITION DIGITIZER, YMLA10
SEE  A
ELECTRICAL SYSTEMS CARD FILE, M7603 AColumn/Rudder Pedal Position Digitizer Installation Figure 401
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A
747-400
MAINTENANCE MANUAL

 (3)  
The operational test of the card YMLA10.

 B.  
The card YMLA10 is in the electrical systems card file M7603 (which is referred to as the "card file M7603"). The card file M7603 is installed between the nose gear wheel well and the left side of the fuselage.

 TASK 27-08-07-004-001
 2.  Column/Rudder Pedal Position Digitizer Removal (Fig. 401)
______________________________________________
 A.  References
 (1)  
IPC 27-09-00 Fig. 51

 (2)  
SSM 27-09-05

 (3)  
WDM 27-09-31

 B.  
Access

 (1)  
Location Zone 115 Area between Nose Gear Wheel Well and Fuselage, LH

 C.  
Procedure

 S 864-001
 (1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6 Main Power Distribution Panel
 1) 6J22 COL/RUD PEDAL SENSOR
 2) 6J23 COL/RUD PEDAL IND

 S 024-002
 (2)  
Loosen the card YMLA10.

 (a)
Remove the card YMLA10 from the card file M7603.

 TASK 27-08-07-404-002
 3.  Column Rudder Pedal Position Digitizer Installation (Fig. 401)
___________________________________________________
 A.  References
 (1)  
24-22-00/201, Manual Control

 (2)  
IPC 27-09-00 Fig. 51

 (3)  
SSM 27-09-05

 (4)  
WDM 27-09-31

 B.  
Access

 (1)  
Location Zone 115 Area between Nose Gear Wheel Well and Fuselage, LH

 C.  
Procedure

 S 424-003
 (1)  
Install the card YMLA10 in the card file M7603.

 (a)  
Tighten the fasteners.

 S 864-004
 (2)
Attach the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6 Main Power Distribution Panel
 1) 6J22 COL/RUD PEDAL SENSOR
 2) 6J23 COL/RUD PEDAL IND

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