D.
References

 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (4)  
AMM 31-51-00/501, MAWEA

 (5)  
AMM 31-61-00/501, Integrated Display System

 (6)  
AMM 32-00-30/201, Landing Gear Door Locks

 (7)  
AMM 32-09-02/201, Air/Ground Relays

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 E.
F.
G.
A
747-400 MAINTENANCE MANUAL
 (8)  
AMM 32-09-03/501, Proximity Switch Electronics Unit (PSEU)

 (9)  
AMM 34-21-00/201, Inertial Reference System

 (10)
 AMM 45-10-00/201, Central Maintenance Computer System

 (11)
 AIPC 32-11-12 Fig. 1

 (12)
 AIPC 32-13-12 Fig. 1

 (13)
 AIPC 32-41-15 Fig. 1

 (14)
 AIPC 32-42-11 Fig. 1

 (15)
 AIPC 32-48-00 Fig. 10

 (16)
 AIPC 32-42-09 Fig. 1

 (17)
 FIM 32-42-00/101, Brake Control SystemAccess

 (1)  
Location Zones 117 Electrical & Electronics Compartment, LH 118 Electrical & Electronics Compartment, RH 135 Wing Landing Gear Well, RH 221 Control Cabin, LH 222 Control Cabin, RH 755 Body Landing Gear - Left 765 Body Landing Gear - Right 735 Wing Landing Gear - Left 745 Wing Landing Gear - Right

Preconditions
 S 865-413
 (1)  
These conditions are necessary for this task:

 (a)  
Electrical Power is available (AMM 24-22-00/201).

 (b)  
The Modular Avionics and Warning Electronic Assembly (MAWEA) is serviceable (AMM 31-51-00/501).

 (c)  
The Engine Indication and Crew Alerting System (EICAS) is serviceable (AMM 31-61-00/501).

 (d)  
The Integrated Display System (IDS) is serviceable
 (AMM 31-61-00/501).

 (e)  
The Brake Hydraulic System (Normal and Alternate) is
 serviceable (AMM 32-41-00/001).

 (f)  
The Proximity Switch Electronics Unit (PSEU) is serviceable (AMM 32-09-03/501).

 (g)  
The Inertial Reference System (IRS) is serviceable
 (AMM 34-21-00/201).

 (h)  
The Central Maintenance Computer System (CMCS) is serviceable

 (AMM 45-10-00/201).Prepare for the System Test
 S 845-252
 (1)  
Make sure that the wheel chocks are installed.

 S 845-254

 (2)  
Make sure that the landing gear ground locks are installed (AMM 09-11-00/201).

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747-400 MAINTENANCE MANUAL
 S 845-256
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (3)  
Do this task: "Installation of the Door Locks on the Wing Gear" (AMM 32-00-30/201).

 S 845-258

 (4)  
Do this task: "Installation of the Door Locks on the Body Gear" (AMM 32-00-30/201).

 S 845-237

 (5)  
Supply electrical power (AMM 24-22-00/201).

 S 845-400

 (6)  
Set the L, C, and R IRS mode selector switches on the Pilot's Overhead Panel, P5, to NAV to align the inertial reference systems (AMM 34-21-00/201).

 S 845-401

 (7)  
Set the GND TESTS switch on the Overhead Maintenance Panel, P461, or in the main equipment center to the ENABLE position.
　
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