Volume Control/Power Switch/Emergency Operation Knob - Cessna 172R Operating Handbook

CESSNA
MODEL 172R
11. VOLUME CONTROL/POWER SWITCH/EMERGENCY OPERATION
KNOB The KMA
-
knob. In the OFF
directly to Com 1. This allows communication capability regardless of
unit condition.
selector will be placed in the emergency mode. The power switch also
controls the audio selector panel
beacon receiver. Unless the
one of the selected audio
the area of the knob
outer
the pilot and
input levels
music
intercom volume for a comfortable listening level for the pilot.
Passenger volume can be adjusted at the
headsets are
is plugged into
shorted. Although
lose one channel.
During KMA
audio is disabled preventing installed
(autopilot disconnect tone) from being heard. The marker
beacon receiver audio and annunciator lights will be
inoperative.
.
Figure 1 Bendix/King KMA 28 Audio Selector Panel (Sheet 5 of 5)
Dec 30/00
SUPPLEMENT 20 -
28 unit is turned
or
EMG (Emergency)
power is removed or turned
Any time
mic
LED's will be
adjust the loudness of the intercom for
to
copilot only. It has no
or passenger's volume
connected in parallel.
a
KMA
stereo
no damage
to
NOTE
28 operation in the OFF or EMG position, the
SECTION
9
-
FAA APPROVED
on and off by pushing the volume
position, the pilot
functions, intercom,
selector is in Com 3
on
(Com 1
effect on selected radio levels,
level. Adjust the radios and
headset.
a
Therefore, if
28 installation, one channel will be
the unit will occur, all
system
SUPPLEMENTS
connected
is
off, the audio
and marker
mode, at least
or
Com 2). Turn
All passenger
monaural headset
passengers will
alerts
S20-9