Cessna 172R, Руководство по эксплуатации

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SECTION 7
AIRPLANE
&
SYSTEMS DESCRIPTION
CESSNA
MODEL 172R
IGlareshield
lighting is
provided by either a fluorescent light or a
series of LED lights
recessed into the lower
surface
of the
glareshield. This light is
controlled
by rotating
the
GLARESHIELD
LT dimmer, located below the nav indicators. Rotating the dimmer
clockwise increases light intensity, and rotating the dimmer
counterclockwise decrease light intensity.
Pedestal lighting consists of a single, hooded light located above
the fuel selector.This light is
controlled by
rotating the
PEDESTAL
LT dimmer, located below the nav indicators. Rotating the dimmer
clockwise increases light intensity, and rotating the dimmer
counterclockwise
decreases light intensity.
Panel lighting is accomplished
using
individual lights mounted in
each instrument and gauge. These lights
are wired
in parallel and
are controlled by the PANEL LT dimmer, located below the
nav
indicators.
Rotating
the dimmer clockwise increases
light intensity,
and rotating the dimmer counterclockwise decreases light intensity.
Pilot control wheel lighting is accomplished by use
of a rheostat
and light assembly, located underneath the pilot control wheel. The
light provides downward illumination
from the bottom of the control
wheel
to
the pilot’s lap area. To
operate the light, first
turn
on the
NAV light switch, then adjust the map
light intensity with the knurled
rheostat knob. Rotating the dimmer
clockwise increases
light
intensity, and rotating the dimmer counterclockwise decreases
light
intensity.
In addition to the RADIO LT
dimmer, lighting intensity
for
the
avionics displays
and the NAV indicators
(pilot's panel)
is controlled
by the annunciator panel test switch. When the switch
is
in the
BRT
position (earlier serial number airplanes) or the
DAY position (later
serial number airplanes), this lighting
may
be
off
regardless of the
RADIO LT dimmer position.
Regardless of the light
system in question, the
most
probable
cause
of
a
light failure is
a
burned
out
bulb. However, in
the event
any
of the lighting
systems
fail
to
illuminate when turned on, check
the appropriate circuit
breaker. If the circuit breaker has opened,
and there is
no
obvious indication of a short circuit (smoke or odor),
turn
off the
light switch
of the affected
light, reset the breaker, and
turn
the switch on again. If the breaker opens
again, do not
reset
it.
7-38 Revision
8