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APPENDIX
131
do
o
do
o o
.
p
ob
PC
od
.(O
PC
od
pp
d)
Press
the
VOL
or
VOLUME
button.
Sound
muted?
Press
MUTE
button.
Try
another
channel.
The
problem
may
be
with
the
broadcast.
Are
the
audio
cables
installed
properly?
Adjust
Balance
in
menu
option.
A
change
in
ambient
humidity
or
temperature
may
result
in
an
unusual
noise
when
the
product
is
turned
on
or
off
and does
not
indicate
a
fault
with
the
product.
Picture
OK
&
No
sound
Unusual
sound
from
inside
the
product
No
output
from
one
of
the
speakers
Adjust
resolution,
horizontal
frequency,
or
vertical
frequency.
Check
the
input
source.
Work
the
Auto
configure
or
adjust
clock,
phase,
or
H/V
position.
(Option)
Check
the
signal
cable.
Reinstall
the
PC
video
card.
The
signal
is
out
of
range
(Invalid
format)
Screen
color
is
unstable
or
single
color
Vertical
bar
or
stripe
on
background
&
Horizontal
Noise
&
Incorrect
position
512Een
3
80/11/24
5:03
PM
Page
131
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