Service manual

111.
OPERATING
CONTROLS
The
KB-112
controls
are
straight-forward
and
simple
to
use.
The
Voluse
control
adjusts
the
your
channel.
listen-level
of
the
speaker.
The
other
important
feature
of
the
The
red
Call
push-button
activates
Call
button
is
its
ability
to
acti-
the
intercom
system's
Visual
Sig-
vate
the
mic
and/or
speaker
of
any
nalling
circuit.
The
signal
re-
KB-112
(on
the
same
channel)
that
mains
active
as
long
as
you
press
is
pre-set
for
remote
control.
the
Call
button.
It
allows
you
to
attract
the
attention
of
operators
The
Call
Light
on
the
KB-112
lights
who
have
removed
their
headsets,
by
up
when
another
station's
operator
illuminating
the
Call
lights
at
all
(on
the
same
channel)
presses
the
stations
that
are
communicating
on
Call
button.
ALTERNATE
OPERATING
MODES
At
the
factory,
Clear-Com
sets
the
KB-112
for
the
NORMAL
operating
mode.
To
pre-set
the
KB-112
for
Remote
Page,
Remote
Listen,
or
Remote
Listen-Page,
change
the
position
of
one
or
more
dip
switches
(designated
as
53-1,
S3-2,
S3-3,
and
53-4).
See
Figure
3,
PC
Board
Lay-Out,
for
the
location
of
these
switches.
The
chart
below
describes
the
functions
that
occur
during
each
set-up,
and
which
switch
positions
enable
these
functions.
Switch
Setting
OPERATING
MODE
S3-2
S3-3
S3-4
"Normal"
-speaker
is
on
-mic
activated
by
front
panel
push-button
ON
OFF
ON
"Remote
Page"
-speaker
turns
on
by
remote
control
-mic
activated
by
front
panel
push-button
ON
ON
ON
"Remote
Listen"
-speaker
is
on
-mic
activated
by
remote
control
ON
OFF
OFF
"Remote
Listen-Page"
-speaker
turns
on
by
remote
control
OR
by
front
panel
push
button
-mic
is
normally
on
OFF
OFF
OFF
4