Cessna 172R Operating Handbook page 258

SECTION 7
AIRPLANE & SYSTEMS DESCRIPTION
IGlareshield
series of LED lights recessed into the lower surface of the
glareshield. This light is
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
the fuel selector.This light is
LT dimmer, located below the nav indicators. Rotating the dimmer
clockwise increases light intensity, and rotating the dimmer
counterclockwise
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,
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
wheel to the pilot's lap area.
NAV light
switch,
rheostat knob. Rotating the dimmer clockwise increases
intensity, and rotating the dimmer counterclockwise decreases light
intensity.
In addition to the RADIO LT
avionics displays and the NAV indicators (pilot's panel) is controlled
by the annunciator panel test
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
cause of a light failure is a burned
any of the lighting
the appropriate circuit breaker. If the circuit breaker has opened,
and there is no obvious indication of a short circuit (smoke or odor),
off the light switch of the affected light, reset the breaker, and
turn
the switch on again. If the breaker opens again, do not
turn
7-38
lighting is provided by either a fluorescent light or a
controlled
controlled by
decreases light intensity.
illumination from the bottom
To
then adjust the map light intensity with the knurled
switch. When the switch
the light
system
fail
systems
by rotating the GLARESHIELD
single, hooded light located above
rotating the PEDESTAL
located below the
operate the light, first turn on the
dimmer, lighting intensity for the
in question, the most probable
out bulb. However,
illuminate when turned
to
CESSNA
MODEL 172R
nav
of the control
light
is in the BRT
in the event
on, check
it.
reset
Revision 8