(c)  
Put the LIGHTS switch on the P37 panel to OFF.

 (d)  
Make sure the lights in the nose wheel well are off.

 S 865-080
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (5)  
Do this task: "The Removal of the Door Locks on the Nose Landing Gear" (Ref 32-00-30/201).

 S 865-011

 (6)  
Remove electrical power if it is not necessary (Ref 24-22-00/201).

 TASK 33-31-00-705-012
 3.  Lights in the Main Wheel Well Operational Test______________________________________________
 A. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 32-00-30/201, Landing Gear Door Locks

 (3)  
IPC 33-31-10, 33-31-11

 (4)  
SSM 33-31-10

 B. Access
 (1)  Location Zone
 100 Left/Right Main Wheel Well

 C. Procedure
 S 865-013
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 865-014

 (2)  
Make sure these circuit breakers are closed:

 (a)  P414 Power Distribution Center - Left 1) 414C24 AIR COND COMP & W/W LT RIGHT 2) 414C23 AIR COND COMP & W/W LT LEFT
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 33-31-00
 ALL  ú ú 01 Page 502 ú Jun 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 495-065
 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: "The Installation of the Door Locks on the Main Landing Gear" (Ref 32-00-30/201).

 S 715-073

 (4)  
Do a test of the lights in the main wheel wells:

 (a)
Put the LIGHT SWITCH RIGHT WHEEL WELL switch to ON.

 (b)
Make sure the lights in the right wheel well are on.

 (c)
Put the LIGHT SWITCH RIGHT WHEEL WELL switch to OFF.

 (d)
Make sure the lights in the right wheel well are off.

 (e)
Put the LIGHT SWITCH LEFT WHEEL WELL switch to ON.

 (f)
Make sure the lights in the left wheel well are on.

 (g)  
Put the LIGHT SWITCH LEFT WHEEL WELL switch to OFF.

 (h)  
Make sure the lights in the left wheel well are off.

 S 865-081
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (5)  
Do this task: "The Removal of the Door Locks on the Main Landing Gear" (Ref 32-00-30/201).

 S 865-019

 (6)  
Remove electrical power if it is not necessary
 (Ref 24-22-00/201).

 TASK 33-31-00-705-020
 4. Lights in the Air Conditioning Compartment Operational Test
___________________________________________________________
 A. References
 (1)  
24-22-00/201, Manual Control

 (2)  
SSM 33-31-10

 B. Access
 (1)  Location Zone
 100 Air Conditioning Compartment

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 33-31-00
 ALL  ú ú 01 Page 503 ú Oct 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 C. Procedure
 S 865-021
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 865-022

 (2)  
Make sure these circuit breakers are closed:

 (a)  P414 Power Distribution Center - Left 1) 414C24 AIR COND COMP & W/W LT RIGHT 2) 414C23 AIR COND COMP & W/W LT LEFT
　
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