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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
EMER EXIT LIGHTS

OFF
ARMED
A NR OM TE
ON
DA
DOME LIGHT
EMERGENCY
SWITCH LIGHTING SWITCH

LIGHTING CONTROLS
(FOR THE CIRCUIT BREAKER
PANEL FLOODLIGHTS AND THE
OVERHEAD PANEL LIGHTPLATES)

LIGHTING CONTROLS MAP LIGHTING CONTROL (FOR THE FLOODLIGHT AND PANEL LIGHTPLATES OF THE CONTROL STAND)

MAP LIGHTING CONTROL WITH A TOGGLE SWITCH
MAP LIGHTING CONTROL WITHOUT A TOGGLE SWITCH
Flight Compartment Lighting - Component Location
Figure 1 (Sheet 3)

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 ú  01  Page 4
 ú  Mar 15/92 

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 4.
5.

6.

A
737-300/400/500MAINTENANCE MANUAL
 B.  This floodlight is a strip of 12 incandescent lamps.
 C.  You change the intensity of the AFDS floodlight with a lighting control knob on the captain's instrument panel, P1.
 D.  Electrical power for this floodlight comes from the 28 volts ac transfer
 bus No. 1.Lightshield Light
_________________
 A.  The background lighting for the pilots' main instrument panel is supplied with three fluorescent light assemblies on the bottom side of the lightshield.
 B.  There is a dimable ballast and switching module for the fluorescent lights on the lower nose compartment ceiling below the instrument panels.
 C.  The 115 volts ac transfer bus No. 1 usually supplies electrical power to operate the fluorescent lamps. With a electrical power failure of the transfer bus, the electrical power automatically comes from the 115 volts ac standby bus.
 D.  You control the intensity of the lighting from off to bright with a
 lighting control knob on the captain's instrument panel, P1.Dome Light
__________
 A.  The dome lights in aft part of the flight compartment supply general area lighting.
 B.  The 28 volts dc battery bus supplies the electrical power for the operation of the dome lights.
 C.  You control the operation of the dome lights with a three position (DIM-OFF-ON) toggle switch on the aft overhead panel, P5. A resistor supplies the voltage drop to make the lamp go dim.
 D.  The left dome light supplies general emergency lighting, if there is a electrical power failure.
 (1)  
When the left dome light has the function of an emergency light, it is operated with the other emergency lights.

 (2)  
You make the emergency lights come on with a switch on the forward overhead panel, P5.

 (3)  
The switch is usually set to the ARMED position. In this position, the emergency lights will come on in a electrical power failure (Ref 33-51-02).

Control Stand Floodlight
________________________
 A.  An incandescent light above a cutout in the forward overhead panel, P5, supplies general lighting for the control stand area.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 7.
8.

9.

A
737-300/400/500MAINTENANCE MANUAL
 B.  The 28 volts ac transfer bus No. 1 supplies power for the operation of the control stand floodlight.
 C.  You change the intensity of this floodlight with a lighting control knob
 on the aft control stand panel, P5.Circuit Breaker Panel Light
___________________________
 A.  Floodlights supply lighting to the circuit breakers in the load control center.
 (1)  
Three floodlights supply lighting to the right panel, P6.

 (2)  
Two floodlights supply lighting to the left panel, P18.

 B.  You change the intensity of these floodlights with a lighting control knob on the forward overhead panel, P5.
　
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