29
electric
shock.
This
kind
of
liquid
will
also
damage
the
surface
of
the
unit.
4.
Dust
on
the
lens
can
impair
sound,
or
even
cause
the
playback
to
stop.
5.
Under
the
following
circumstances,
there
will
be
condensed
dew
on
the
lens:
a)
When
a
heat
source
is
just
turned
on
nearby.
b)
In
a
very
damp
room.
c)
When
the
unit
is
just
moved
from
a
colder
place
to
a
hotter
one.
OPERATION
AND
MAINTENANCE
OF
CD
DISCS
Please
take
out
the
disc
by
holding
the
brim
of
the
discs
as
below;
try
to
not
touch
the
data
side
of
the
disc.
Do
not
attach
any
labels
on
any
side
of
the
disc,
and
do
not
scratch
the
faces
of
the
disc.
When
a
disc
is
being
played,
the
rotation
speed
is
very
high.
Make
sure
not
to
use
damaged,
scratched,
cracked
or
bent
discs.
Fingerprints
or
dust
on
the
lens
can
impair
the
laser
beam
and
affect
the
signal’s
quality.
A
poor
signal
quality
generates
a
poor
playing
quality.
Use
a
soft
cloth
to
wipe
the
disc,
from
the
disc
centre
towards
the
outside.
If
the
disc
is
very
dirty,
start
the
wiping
with
a
wet
soft
cloth,
and
then
use
a
dry
soft
cloth
to
wipe
it
dry.
Do
not
use
detergents,
Summary of Contents for CEHFSBT17B4
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