33-37-00
 ALL  ú ú 01 Page 2 ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 CARGO COMPARTMENT LIGHTS - ADJUSTMENT/TEST
__________________________________________
 1.  General_______
 A.  This procedure contains these tasks:
 (1)  
A task to do an operational test of the lights in the forward cargo compartment.

 (2)  
A task to do an operational test of the lights in the aft cargo compartment.

 TASK 33-37-00-705-001
 2.  Forward Cargo Compartment Lights Operational Test_________________________________________________
 A.  References
 (1)  
24-22-00/201, Manual Control

 (2)  
WDM 33-37-11

 (3)  
SSM 33-37-10

 B.  Access
 (1)  Location Zone
 122 Forward Cargo Compartment

 C.  Procedure
 S 865-002
 (1)  
Supply electrical power (Ref 24-22-00/201)

 S 715-003

 (2)  
Do these steps to do a test of the forward cargo compartment lights:

 (a)  
Close these circuit breakers: 1) P414 Power Distribution Center - Left a) 414C22 FORWARD CARGO COMPT LIGHTS

 2)  P54 Center Equipment a) FORWARD CARGO LIGHTS - RIGHT b) FORWARD CARGO LIGHTS - LEFT

 (b)  
Put the FORWARD CARGO COMPARTMENT LIGHT switch on the sidewall panel to ON.

 (c)  
Make sure all the forward cargo compartment lights are on.

 (d)  
Put the FORWARD CARGO COMPARTMENT LIGHT switch on the sidewall panel to OFF.

 (e)  
Make sure all the forward cargo compartment lights are off.

 (3)
Remove electrical power if it is not necessary (Ref 24-22-00/201)

 S 865-004
 TASK 33-37-00-705-005
 3.  Aft Cargo Compartment Lights Operational Test_____________________________________________
 A.  References
 (1)  24-22-00/201, Manual Control
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 33-37-00
 ALL  ú ú 01 Page 501 ú Feb 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  
WDM 33-37-21

 (3)  
SSM 33-37-20

 B.  Access
 (1)  Location Zone
 142 Aft Cargo Compartment

 C.  Procedure
 S 865-006
 (1)  
Supply electrical power (Ref 24-22-00/201)

 S 715-007

 (2)
Do these steps to do a test of the aft cargo compartment lights:

 (a)  
Close these circuit breakers:

 1)  P59 Lower Cargo Equipment - Aft a) AFT CARGO COMPARTMENT LIGHT - PRIM b) AFT CARGO LIGHT - SEC c) AFT CARGO LIGHT - SEC

 (b)  
Put the SW-AFT CARGO COMPT LT switch on the P59 panel to its other position.

 (c)  
Make sure all the aft cargo compartment lights are on.

 (d)  
Put the SW-SVCE LT COMPT LT on the cargo sidewall panel to its other position.

 (e)  
Make sure all the aft cargo compartment lights are off.

 (3)
Remove electrical power if it is not necessary (Ref 24-22-00/201)

 S 865-008
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 33-37-00
 ALL  ú ú 01 Page 502 ú Feb 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 EXTERIOR LIGHTS - DESCRIPTION AND OPERATION
___________________________________________
 1.  General_______
 A. Exterior lighting is divided into the following sections:
 (1)  
Wing Illumination Lights (AMM 33-41-00/001)

 (a)  Wing illumination lights are flush mounted on each side of the airplane above the intersection of the wing leading edge and the fuselage. These lights illuminate the wing leading edges and the engine nacelles. The lights use sealed beam incandescent lamps.
　
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