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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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D633A101-GUN Oct 10/2002
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
The entry lights supply light for the airplane entry areas. The
entry lights are in the forward and aft ends of the passenger
cabin.
Physical Description
The entry lights are fluorescent lights. They have these
components:
* lamp
* lens
* Bezel
* Ballast (not shown).
The threshold light is an incandescent lamp assembly.
location
The entry lights are in the ceiling near the entry and service
entry doors. The threshold light is on the forward entry door
windscreen.
LIGHTS - ENTRY LIGHTS - INTRODUCTION
EFFECTIVITY
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LIGHTS - ENTRY LIGHTS - INTRODUCTION
LIGHTS - ENTRY LIGHTS - INTRODUCTION
EFFECTIVITY
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Operation
You use a three-position rotary switch to control the entry lights.
This switch is on the P13 forward attendant panel. These are the
positions and operation of the switch:
* OFF - all lights are off except with external power applied
* DIM - the fluorescent lamps are on dim
* BRIGHT - the fluorescent lamps are on bright and the
threshold lights are on.
With external power applied, the dim incandescent entry light is
on.
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When you open the flight compartment door, the forward entry
light goes dim. If airstairs are deployed, the forward entry light
stays on.
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Functional Description
When you move the switch from the OFF position, 115v ac from
the ground service bus goes to the entry light ballast assembly.
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When you open the flight compartment door, R292 is not
energized and the forward entry light goes dim. If airstairs are
deployed, R292 energizes and the light stays on.
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The ballast assembly supplies the control logic for the OFF,
DIM, or BRT mode of operation. A control signal from the ballast
goes to the rotary switch to set the mode.
LIGHTS - ENTRY LIGHTS - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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LIGHTS - ENTRY LIGHTS - FUNCTIONAL DESCRIPTION
LIGHTS - ENTRY LIGHTS - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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LIGHTS - ENTRY LIGHTS - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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LIGHTS - ENTRY LIGHTS - FUNCTIONAL DESCRIPTION
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D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
The cargo and service compartment lights supply light to help
maintenance personnel and ground crews.
Location
There are cargo compartments lights in the forward and aft
cargo compartments.
There are service lights in these areas:
* Forward equipment compartment
* Electronic equipment compartment
* Right air conditioning compartment
* Left air conditioning compartment
* Aft accessory compartment (section 48 interior)
* APU compartment
* Tail cone compartment.
There are wheel well lights in the nose and main wheel wells.
LIGHTS - CARGO AND SERVICE COMPARTMENT LIGHTS - INTRODUCTION
EFFECTIVITY
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