TM 55-1520-240-23-7
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LIGHTING SYSTEMS
(Continued)
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CENTER FLIGHT INSTRUMENT PANEL LIGHTS
SYSTEM WITH 17 AND 74
Description
The center instrument panel lighting system includes
CTR INST LTG control 0-115 variable transformer, 115
to 5 volt autotransformer, lamps to light 17 instruments,
standby compass, and lightplates for FIRE DETECTOR
panel, and CAUTION LT/VHF ANT SEL panel.
Operation
Power for the system comes from the 115 volt No. 2
ac bus. When CTR INSTR LIGHTING circuit breaker
is closed, 115 vac is applied to CTR INST LTG control
which varies the 5 volt output to vary the brightness of
the lamps and lightplates.
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