Instruction manual

OPERATION
/ Clear-Corn
CS-222
2-Channel
Main
Station
13.
Power
Supply
LEDs
There
are
two
power
supply
status
LEDs
in
the
lower
right
hand
corner
of
the
front
panel.
NORMAL
OPERATION:
The
GREEN
LED
is on
by
itself.
OVERLOAD
CONDITION:
if
the
RED
LED
is on
and
the
GREED
LED
pulses
on
shortly
about
every
five
seconds,
the
load
is in
excess
of
1
ampere
but
there
is
not
a
direct
short
on
the
line.
SHORT
CONDITION:
if the
RED
LED
is on
and
the
GREEN
LED
does
not
pulse
on,
the
power
line
has
a direct
short
on
it.
Lowering
an
excess
load
or
removing
a
short
will
allow
the
automatic
reset
circuit
to
attempt
to
reset
the
power
supply
about
once
every
four
seconds,
to restore
normal
operation
to
the
power
supply
without
operator
intervention.
SECTION
4
/
TROUBLESHOOTING
THE
CS-222
2-CHANNEL
INTERCOM
STATION
Symptom
#1:
System
is
non-operable:
GREEN
power
led
is
not
illuminated
and
the
RED
short
led
is
not
illuminated.
CAUSE:
Loss
of
AC
power.
*
REMEDY:
Plug
unit
into
dependable
AC
source.
CAUSE:
Fuses
could
be
blown.
REMEDY:
Replace
fuse(s);
If it
blows
repeatedly,
probably
the
power
supply
has
internal
component
failure.
Symptom
#2:
The
RED
short
led
stays
illuminated
without
the
GREEN
led
pulsing
on
periodically.
CAUSE:
Shorted
or
mis-wired
intercom
cable.
REMEDY:
Remove
cables,
one
at a
time,
from
Main
Station
until
faulty
line
Is
located.
Check
for
shorts
between
pins
1 and
2.
When
removing
a
possible
short
wait
for
several
seconds
to
see
if
the
automatic
reset
will
clear
itself.
CAUSE:
Defective
Remote
Station.
REMEDY:
Check
Remote
unit.
Symptom
#3:
Excessive
back-ground
noise
pick-up
by
microphone.
CAUSE:
Distance
from
mic
to
mouth
is too
far.
REMEDY:
Move
closer
to
mic.
CAUSE:
Too
many
mics
on
in entire
system.
REMEDY:
Turn
off
all unused
mics.
RMK
can
be
used
to
kill
all
Series
500
belt-pack
open
mics.
*
CAUSE:
Volume
too
high.
REMEDY:
Lower
headset
volume.
11/90
Rev.
1.0
Page
20