-
four 6VDC overwing emergency lights, installed in the wing fairings,

 -twelve 6VDC cabin emergency lights,
 -
four 6VDC escape hatch-handle lights,

 -
four 6VDC exit location signs,

 -eight 6VDC exit marking signs,
 -twenty-five 115VAC luminescent light strips for the floor-proximity emergency-escape path-marking lights,
 -eight 115VAC wall-mounted exit-marking signs,
 -three 28VDC auxiliary lights, one installed in each lavatory.
 **ON A/C 301-302,
 (Ref. Fig. 009E, 011C)
 A. Emergency Lighting System
 The emergency lighting system of the cabin consists of:
 -six emergency power-supply units
 -nineteen 6VDC cabin emergency lights
 -eight 6VDC exit marking signs
 -six 6VDC exit location signs
 -eight 115VAC wall-mounted exit-marking signs
 -thirty-five 115VAC luminescent light strips for the floor-proximity emergency-escape path-marking lights
 -four 28VDC auxiliary lights, one installed in each lavatory
 -a number of 6VDC escape slide lights as parts of the escape slides.
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 Lavatory Auxiliary Lights - Schematic
 Figure 011C 
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1  1  Aug 01/05
 1  1
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R **ON A/C 303-399,

R  (Ref. Fig. 009F, 011C) 
R R R R R R R R R R R R  A. Emergency Lighting System The emergency lighting system of the cabin consists of: - six emergency power-supply units - a number of 6VDC escape slide lights as parts of the escape slides - nineteen 6VDC cabin emergency lights - eight 6VDC exit marking signs - six 6VDC exit location signs - eight 6VDC wall-mounted exit-marking signs - four 28VDC auxiliary lights, one installed in each lavatory - photoluminescent strips in the aisle for the marking system of the floor-proximity emergency escape-path. 
R  **ON A/C 401-499, 
R  (Ref. Fig. 009G, 011A)
 A. Emergency Lighting System The emergency lighting system of the cabin consists of: - fourteen 6 V cabin emergency lights, - six 6 V exit marking signs, - four 6 V exit location signs, - four 6 V overwing emergency-exit lights, installed in the wing fairing, - four emergency-power supply units, - one 28 V auxiliary light, installed in each lavatory, - three 6 V seat-mounted floor-proximity emergency-lights, - eight 6 V wall-mounted floor-proximity emergency-lights, - two 6 V seat-mounted emergency-exit location-lights.
 **ON A/C 051-099,
 Post SB  33-1041 For A/C 051-099, 
R  (Ref. Fig. 009H, 011)
 A. Emergency Lighting System
 The emergency lighting system of the cabin consists of: - four emergency power-supply units - four 6VDC overwing emergency lights, installed in the wing fairings - twelve 6VDC cabin emergency lights 

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 -
four 6VDC escape hatch-handle lights

 -
four 6VDC exit location signs

 -six 6VDC exit marking signs
 -eight 6VDC wall-mounted exit-marking signs
 -6VDC light moduls for the floor-proximity emergency-escape path-marking lights
 -three 28VDC auxiliary lights, one installed in each lavatory.
 **ON A/C ALL
 4. Power Supply____________
 **ON A/C 001-049, 101-105, 151-158, 201-209,
 The 28VDC essential busbar 801PP and the 115VAC normal busbar 103XP supply the Emergency Power Supply Units (EPSUs) and the power supply units. The EPSUs 10WL thru 13WL convert 28VDC into 6VDC to operate the 6VDC lights in the system. The power supply units 110WL1 thru 110WL3 invert 9.6VDC into 115VAC to supply the marking system of the emergency escape path. A battery in each EPSU and each power supply unit is charged continuously when the essential busbar is energized and the circuit breakers are closed. Each of the EPSUs and the power supply units supplies electrical power to different emergency lights and signs. The emergency lights and signs are always supplied with power, even if the aircraft has crashed and the fuselage has broken. This is because the four EPSUs and the three power supply units are installed in different places in the cabin.
 **ON A/C 051-099,
 The 28VDC essential busbar 801PP and the 115VAC normal busbar 103XP supply the Emergency Power Supply Units (EPSUs) and the power supply units. The EPSUs 10WL thru 13WL convert 28VDC into 6VDC to operate the lights in the normal emergency light system. The power supply units 110WL1 thru 110WL3 convert 28VDC into 6VDC to supply the marking system of the emergency escape path. A battery in each EPSU and each power supply unit is charged continously when the essential busbar is energized and the circuit breakers are closed. Each of the EPSUs and the power supply units supplies electrical power to different emergency lights and signs. The emergency lights and signs are always supplied with power, even if the aircraft has crashed and the fuselage has broken. This is because the four EPSUs and the three power supply units are installed in different places in the cabin.
　
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