SERVICE AND CARGO LOADING LIGHTS -EQUIPMENT CENTER LIGHTS -FUNCTIONAL DESCRIPTION
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SERVICE AND CARGO LOADING LIGHTS -ECS BAY LIGHTS -FUNCTIONAL DESCRIPTION
Functional Description
Power for the lights goes from the P320 ground service/ handling panel to a transformer in the P35 forward cargo handling accessory panel. The transformer decreases the voltage from 115v ac to 28v ac.
There is one switch in each ECS bay. When a switch is in the ON position, power from the transformer goes to the lights and makes them come on in that ECS bay.
Power
The ground handling bus must have power for the light to operate.
Interface
The transformer also supplies power to some cargo lights.
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SERVICE AND CARGO LOADING LIGHTS -ECS BAY LIGHTS -FUNCTIONAL DESCRIPTION
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SERVICE AND CARGO LOADING LIGHTS -WHEEL WELL LIGHTS -FUNCTIONAL DESCRIPTION
Main Wheel Well
When the switch in the main wheel well is in the ON position, power goes to the transformer. The transformer decreases the voltage to 28 volts and makes the lights come on.
Nose Landing Gear Wheel Well
When the switch in the nose landing gear wheel well is in the ON position, the circuit is complete. This makes the lights come on.
Power
The ground service bus must have power for the lights to operate.
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SERVICE AND CARGO LOADING LIGHTS -WHEEL WELL LIGHTS -FUNCTIONAL DESCRIPTION
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SERVICE AND CARGO LOADING LIGHTS -APU & STABILIZER COMPARTMENT LIGHTS -FUNCTIONAL DESCRIPTION
General
The ground handling bus supplies power for the APU and stabilizer compartment lights. A transformer decreases the 115v ac power to 28v ac. Three switches control power to the lights.
Interfaces
The transformer also supplies power to some of the cargo lights.
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SERVICE AND CARGO LOADING LIGHTS -APU & STABILIZER COMPARTMENT LIGHTS -FUNCTIONAL DESCRIPTION
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SERVICE AND CARGO LOADING LIGHTS -CARGO LOADING LIGHTS -INTRODUCTION
Purpose
The cargo loading lights give light near the cargo compartment loading areas to help the ground crew.
Location
There are 11 cargo loading lights. Four lights are body-mounted and seven are cargo door-mounted. The forward cargo door has four door-mounted lights and the aft door has three door-mounted lights.
General Description
The cargo loading lights get power from the ground handling bus.
You use control switches near the cargo doors to operate the cargo Loading lights.
Some door-mounted lights automatically come on when you open the access door between the forward cargo compartment and the MEC.
Door-mounted lights operate only if the cargo door is full open.
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SERVICE AND CARGO LOADING LIGHTS -CARGO LOADING LIGHTS -INTRODUCTION
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SERVICE AND CARGO LOADING LIGHTS -CARGO LOADING LIGHTS, BODY-MOUNTED
Purpose
The body-mounted cargo loading lights give light near the cargo compartment doors to help the ground crew.
Location
There are four body-mounted cargo loading lights. The forward and aft cargo compartment loading areas have one light each. These lights are aft of the cargo compartment doors.
There are two bulk cargo lights, one on each side of the bulk cargo door.
Physical Description
Each light has these parts:
*
Electrical connector
*
Lamp
*
Lens assembly.
Training Information Point
The four lights are the same.
You get access to replace the lamp by removing the lens assembly.
NOTE: Do not touch the new lamp with your hands. Use clean gloves or lint-free cloth.
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SERVICE AND CARGO LOADING LIGHTS -CARGO LOADING LIGHTS, BODY-MOUNTED 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：777 AMM 飞机维护手册 灯 Lights(29)
