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• Cargo bay door area
• The water-fill service door, and
• The toilet service door
• Nose landing gear wheel well
• Main avionics compartment
• Aft equipment compartment
Components and Operation
External Service Door Lights
Service lighting is installed in the lower portion of the left and right engine pylons.
Switches located inside the baggage compartment control the left pylon service light.
The right pylon service light is controlled by a microswitch located in the waste service access
panel, and a second microswitch located in the potable water service access panel.
Nose Landing Gear Wheel Well
The nose landing gear wheel well service light is installed on the forward wall of the wheel well.
There is one toggle switch to operate the service light. The switch is identified as SERVICE
LIGHT, and is installed on the left side of the wheel well service light.
LIGHTING
Description
Vol. 2 16−10−17
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CARGO AND SERVICE COMPARTMENT LIGHTING (CONT'D)
Nose Landing Gear Service Light
Figure 16−10−15
Main Avionics Compartment
The main avionics compartment service light is installed on the right side of the avionics bay.
There is one toggle switch to operate the service light. The switch is identified as SERVICE
LIGHT, and is typically installed above the compartment service light, depending on completion.
Aft Equipment Compartment
There are three service lights installed in the aft equipment compartment. One toggle switch
operates the three lights. The switch is identified as SERVICE LIGHT, and is installed on the left
side of the compartment, above the access door frame.
LIGHTING
Description
Vol. 2 16−10−18
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CARGO AND SERVICE COMPARTMENT LIGHTING (CONT'D)
Service Lights − Location and Controls
Figure 16−10−16
EMERGENCY LIGHTING
Description
The emergency lighting system provides illumination to the main cabin door and the right-hand
overwing exit, as well as to the cabin interior, and floor level lighting leading to the aircraft exits.
Components and Operation
Power Supply
The emergency lights are powered by two self-contained, rechargeable battery packs that
receive a “trickle” charge from the DC essential bus. When in use, each pack provides
approximately fifteen minutes of power to the emergency lighting system. When the battery
packs’ power supply is low, an EMER LTS OFF caution message will appear on the EICAS.
LIGHTING
Description
Vol. 2 16−10−19
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
EMERGENCY LIGHTING (CONT'D)
Interior Emergency Lights
The location and the number of the interior emergency lights varies depending on the aircraft’s
completion. If installed, the aircraft will have white floor track lighting that leads to red lighting.
The red lighting is typically used to mark the location of the aircraft’s two emergency exits.
Exterior Emergency Lights
There are four exterior emergency lights, and their locations are as follows:
• One light located forward of the cabin door
• Two lights forward and one light aft of the overwing exit
LIGHTING
Description
Vol. 2 16−10−20
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
EMERGENCY LIGHTING (CONT'D)
Exterior Emergency Lights
Figure 16−10−17
Controls and Indicators
The EMER LTS switch, located on the PASS SIGNS/EMER LTS panel, controls the emergency
lights. The EMER LTS switch has three positions: ON, OFF, and ARM.
LIGHTING
Description
Vol. 2 16−10−21
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
EMERGENCY LIGHTING (CONT'D)
When selected to ON, the emergency lights illuminate, and are powered by their respective battery
packs. The battery packs do not continue to “trickle” charge, and the EMER LTS ON status EICAS
message will appear.
When selected to OFF, power is removed from the emergency lighting system. If the DC essential
bus is powered, and the emergency lights are selected OFF, the battery packs continue to “trickle”
charge and the EMER LTS OFF caution EICAS message will appear.
When selected to ARM, the preset conditions for automatic illumination is a power loss on the AC
essential bus or DC essential bus.
When these conditions are met, the emergency lighting system will illuminate and the EMER LTS
　
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