SERVICE AREA LIGHTING - DESCRIPTION AND OPERATION

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1. General
The service area lighting system comprises the lights installed in the APU compartment and in Section 19. Electrical outlets are provided for portable maintenance lights.

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2. Component Location

Service Area Lighting - Component Location ** ON A/C NOT FOR ALL

FIN	FUNCTIONAL DESIGNATION	PANEL	ZONE	ATA REF
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4LJ	MAINT. LIGHT	312AR	311	33-31-11
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4LJ	MAINT. LIGHT		312	33-31-11
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5LJ	MAINT. LIGHT	311AL	312	33-31-11
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5LJ	MAINT. LIGHT		311	33-31-11
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6LJ	MAINT. LIGHT	311AL	311	33-31-11
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8LJ	OUTLET-28 V DC	315AL	312	33-31-00
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8LJ	OUTLET-28 V DC	312AR	312	33-31-00
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10LJ	OUTLET-28 V DC	312AR	312	33-31-00

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3. System Description

Service Area Lighting - Schematic ** ON A/C NOT FOR ALL

The lights and outlets are supplied with 28 V DC from busbar 208PP through the circuit breakers 2LJ and 1LJ. Switch 11LJ controls the APU light 6LJ and switch 3LJ controls the two lights 4LJ and 5LJ in Section 19. When busbar 208PP is energized and the circuit breaker 1LJ is closed, power is available at the two maintenance outlets in Section 19.

[Rev.10 from 2021] 2026.04.01 00:54:09 UTC