Cessna 150M - Flashing Beacon; Instrument and Dome Lights; Transistorized Light Dimming

dischar8'e into a xenon tube, producing an extremely
high intensity flash. Thru 1972 models energy is sup-
plied to the strobe lights from a power supply mounted
just aft of the baggage curtain, on the left side of the
aircraft. Beginning with 1973 models an individual
power supply is mounted on each wing tip rib.
16-58. REMOVAL AND INSTALLATION. Use fig-
ure 16-6 as a guide for removal and installation
of the anti-collision strobe light components.
IWARNING'
This anti- collision system is a high voltage
device. Do not remove or touch tube as-
sembly while in operation. Wait at least 5
minutes after turning off power before start-
ing work.
16-59. FLASHING BEACON.
16-60. DESCRIPTION. The flashing beacon light is
attached to a thermoformed plastic mounting on the
vertical fin. The flashing beacon is an iodine-vapor
lamp electrically switched by a solid- state flasher
assembly. The flasher assembly is located in the
aft section of the tailcone. The switching frequency
of the flasher assembly operates the beacon at ap-
proximately 45 flashes per minute. On late 1970
models and on, a 1. 5 ohm, 75 watt resistor is in-
stalled to eliminate a pulsing effect on the cabin
lighting and ammeter.
16-61. REMOVAL AND INSTALLATION. For re-
SHOP NOTES:
16-24
Change 3
moval and installation of the flashing beacon refer to
figure 16-7.
16-62. INSTRUMENT AND DOME LIGHTS.
16-63. DESCRIPTION. On 1969 models the instru-
ment and dome lights are mounted in the overhead
console and provide non-glare instrument flood light-
ing and cabin lighting. The instrument flood light
consists of a red lens and a single bulb that is con-
trolled by a dimming rheostat mounted on the right
side of the overhead console. On 1970 models and
on, the instrument and dome light console has been
redesigned to provide greater head clearance and is
incorporated as an integral part of the Ensolite head-
liner. The dimming rheostat is located on the switch
panel. The dome light consists of a frosted lens and
a Single bulb controlled by a rocker switch located on
the switch panel. On 1971 models the speaker instal-
lation has been incorporated into the overhead con-
sole.
16-63A. TRANSISTORIZED LIGHT DIMMING (Refer
to figure 16-8A).
16-63B. DESCRIPTION. Beginning with 1976 models
a remotely located, two-circuit transistorized dim-
ming assembly is installed to control instrument light-
ing. One circuit controls the compass light, map
light and instrument flood light. The other circuit
controls the radio lighting. A concentric knob ar-
rangement on the instrument panel controls the sys-
tem. The center portion of the knob controls the re-
mainder of the system. Refer to figure 16-BA for
removal and installation of the dimming assembly.