Maintenance Practices 201 ALL Assembly Replacement 204 Lamp Replacement 201 Light Beam Adjustment 211 Transformer Replacement 208
AREA LIGHTS 33-46-00
Description and Operation 1 ALL
General 1
Maintenance Practices 201 ALL
Lamp - Replacement 201
TRANSFORMER - AREA LIGHT 33-46-01
Removal/Installation 401 ALL
EMERGENCY LIGHTS 33-50-00
________________ Description and Operation 1 ALL General 1
33-CONTENTS
GUN Page 11 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
CHAPTER 33 - LIGHTS TABLE OF CONTENTS
_________________ Chapter
Section
Subject_______ Subject_______ Page____
EMERGENCY LIGHTS 33-51-00
Description and Operation 1
General 1
Lights - Ceiling 1
Lights - Door (Slide) 1
Power Supplies 3
Signs - Exit 2
Switch - Attendant's 2
Switch - Pilot's 2
Operation 3
Component Location 101
Component Index
Component Location
Maintenance Practices 201
Connector - Connection 202
Electrical Connector - 201
Disconnect
Adjustment/Test 501
General 501
Operational Test with the 501
Pilot's Switch
Operational Test With The 502
Pilot's Switch And The
Attendant's Switch
System Test 504
LIGHTS - CEILING 33-51-07
Maintenance Practices 201
Ceiling Light - Installation 203
Ceiling Light - Lamp 201
Replacement
Ceiling Light - Removal 203
EffectivityALL
ALLALL
ALL
ALL
33-CONTENTS
GUN Page 12 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
CHAPTER 33 - LIGHTS
TABLE OF CONTENTS
_________________
Chapter Section Subject_______ Subject ____ Effectivity
_______ Page ___________
LIGHTS - DOOR (SILL) 33-51-05 Maintenance Practices 201 ALL Door (Sill) Light - Lamp 201 Replacement Door (Sill) Light - Light 203 Assembly Removal Door Frame Light Assembly -204 Installation LIGHTS - DOOR (SLIDE) 33-51-06 Maintenance Practices 201 ALL Upper Deck Door (Slide) 201 Light - Lamp Replacement Removal/Installation 401 ALL Upper Deck Door (Slide) 403 Light - Installation Upper Deck Door (Slide) 401 Light - Removal LIGHTS - SLIDE 33-51-10
Maintenance Practices 201 ALL Slide Light - Installation 202 Slide Light - Lamp 201
Replacement
Slide Light - Removal 202
POWER SUPPLY 33-51-04
Maintenance Practices 201 ALL Battery Replacement 201 Power Supply - Installation 205 Power Supply - Removal 204
SIGNS - EXIT 33-51-02 Maintenance Practices 201 ALL Exit Sign - Lamp Replacement 201
33-CONTENTS
GUN Page 13 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
LIGHTS - DESCRIPTION AND OPERATION
__________________________________
1. General_______
A. White incandescent and fluorescent lamps are used on all airplane light assemblies. Selected requirements for colored illumination as used on instrument panel indicators, fuselage anti-collision, and wingtip navigation lights is achieved through the use of colored lenses.
CAUTION:_______CHECK IDENTIFICATION NUMBER BEFORE INSTALLING LAMP. INSTALLATION OF LAMPS WITH INCORRECT VOLTAGE RATING FOR APPLICATION MAY CAUSE CIRCUITRY DAMAGE.
B. Most light assemblies are readily relampable with standard tools. However, certain precautions should be taken in the selection of lamps used as replacements. Lamps of different voltages ratings may have the same physical characteristics; therefore, size and shape of lamp should not be used as only criteria for selecting replacement lamps. Always verify that identification number on replacement lamp is correct for the application as specified in the Illustrated Parts Catalog. The lamp usage chart, SSM 33-00-01, may be used for a quick check of a lamp number for most applications.
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