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 C.  Upper Equipment Center-Left Light
 (1)  A utility light provides illumination for servicing the upper equipment center-left. The light located in a snap-in swivel mounting base, is electrically connected to a 50-inch coiled cord. It can be used as a portable light within the range of the coiled cord. A knob on the rear of the light assembly turns the light on and off.
 D.  Aft Equipment Center Light
 (1)  A utility light provides illumination for servicing the aft equipment center. It is similar to the upper equipment center light except it has a rheostat dimmer switch and a momentary-on pushbutton switch that shunts the rheostat when pressed and turns the light on bright.
 5.  Tail Cone Lights
________________
 A.  Incandescent dome lights give lighting for servicing the tail cone. There is a light switch in each entry hatch.
 6.  APU Compartment Lights
______________________
 A.  Explosion-proof dome lights provide general area illumination for servicing APU compartment installations. The dome lights are mounted on the compartment sides. A toggle switch mounted adjacent to the left dome light turns the lights on and off. The aft equipment lights transformer powers the two lights.
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A 747-400 MAINTENANCE MANUAL
UPPER EQUIPMENT CENTER

Service Compartment Lights Component Location
Figure 1 (Sheet 1)

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A

747-400
MAINTENANCE MANUAL

NOSE GEAR WHEEL WELL LIGHTS
SEE F
SEE E
FLIGHT DECK
CALL FLIGHT SERVICE
INT INT
NOSE WHEEL WELL

LIGHTS
LIGHT SWITCH
ON
OFF
E TYPICAL LIGHT F
Service Compartment Lights Component LocationFigure 1 (Sheet 2)
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A
747-400
MAINTENANCE MANUAL

WHEEL WELL LIGHT SWITCH
LOCATION - BOTH SIDES

Service Compartment Lights Component Location
Figure 1 (Sheet 3)

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A

747-400
MAINTENANCE MANUAL

SERVICE DOOR
SEE I CENTER FUSELAGE EQUIPMENT CENTER LIGHT
SEE B
AIR CONDITIONING COMPARTMENT LIGHTS
SEE HGROUND SERVICE PNEUMATIC CONNECTOR ACCESS HATCH
SEE J
WHEEL WELL AND AIR CONDITIONING COMPARTMENT LIGHT TRANSFORMERS
TYPICAL LIGHT 
H 
CENTER EQUIP 
SERVICE LIGHTS 
CENTER FUSELAGE 
EQUIPMENT CENTER 
LIGHT SWITCH 

SERVICE INPH 
I  AIR CONDITIONING COMPARTMENT LIGHT SWITCH J 

Service Compartment Lights Component Location
Figure 1 (Sheet 4)

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A
747-400
　
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