Sony LBT-D107 Operating Instructions - Page 18

Troubleshooting, Guide

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Troubleshooting Guide Before going through the check list below, first refer back to the connections and operating procedures. Should any problem persist after you have made these checks, consult your nearest General No power Symptom No sound Reversed left and right sound Severe hum and noise Cause AC power cord is not connected securely. The VOLUME control is not turned up. Wrong connection Wrong connection Loose connections The unit is located near TVNCR. Remedy Connect the AC power cord securely. Turn up the volume. Connect the speakers correctly. Connect the speakers correctly. Make connections securely. Move TVNCR away from the unit. Tuner Symptom The"TUNED"orSTEREO"indication blinks. Cause Antenna is not aimed in the right direction. Received signals are weak. Severe hum or noise Antenna is not aimed in the right direction. Received signals are weak. Remedy Adjust the location and direction of the antenna. Connect to an external antenna if the indication still blinks even after adjusting the antenna. Adjust the location and direction of the antenna. Connect to an external antenna if hum or noise still interferes with reception. Cassette Deck Symptom You can not record on a tape. You cannot dub tapes. Unbalanced tone in higher frequencies Unclear recording or playback Cause The tab has been removed from the cassette. The tab of the cassette in deck B has been removed. The DOLBY NR switch is not in the correct position. Dirty head Excessive wow or flutter, or sound dropout Incomplete erasure. Dirty capstans and pinch rollers Magnetized erasing head Remedy Cover it with a piece of adhesive tape. Cover it with a piece of adhesive tape. Set the DOLBY NR switch to ON or OFF as was set for recording. Clean and demagnetize the recording/ playback heads. Clean the capstan and pinch roller. Demagnetize the erasing head. 18

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Troubleshooting
Guide
Before
going
through
the
check
list
below,
first
refer
back
to
the
connections
and
operating
procedures.
Should
any
problem
persist
after
you
have
made
these
checks,
consult
your
nearest
General
Symptom
No
power
Cause
AC
power
cord
is
not
connected
securely.
Remedy
Connect
the
AC
power
cord
securely.
No
sound
The
VOLUME
control
is
not
turned
up.
Turn
up
the
volume.
Reversed
left
and
right
sound
Wrong
connection
Connect
the
speakers
correctly.
Severe
hum
and
noise
Wrong
connection
Connect
the
speakers
correctly.
Loose
connections
Make
connections
securely.
The
unit
is
located
near
TVNCR.
Move
TVNCR
away
from
the
unit.
Tuner
Symptom
Cause
The"TUNED"orSTEREO"indication
Antenna
is
not
aimed
in
the
right
direction.
blinks.
Remedy
Adjust
the
location
and
direction
of
the
antenna.
Received
signals
are
weak.
Connect
to
an
external
antenna
if
the
indication
still
blinks
even
after
adjusting
the
antenna.
Severe
hum
or
noise
Antenna
is
not
aimed
in
the
right
direction.
Adjust
the
location
and
direction
of
the
antenna.
Received
signals
are
weak.
Connect
to
an
external
antenna
if
hum
or
noise
still
interferes
with
reception.
Cassette
Deck
Symptom
You
can
not
record
on
a
tape.
Cause
The
tab
has
been
removed
from
the
cassette.
Remedy
Cover
it
with
a
piece
of
adhesive
tape.
You
cannot
dub
tapes.
The
tab
of
the
cassette
in
deck
B
has
been
removed.
Cover
it
with
a
piece
of
adhesive
tape.
Unbalanced
tone
in
higher
frequencies
The
DOLBY
NR
switch
is
not
in
the
correct
position.
Set
the
DOLBY
NR
switch
to
ON
or
OFF
as
was
set
for
recording.
Unclear
recording
or
playback
Dirty
head
Clean
and
demagnetize
the
recording/
playback
heads.
Excessive
wow
or
flutter,
or
sound
Dirty
capstans
and
pinch
rollers
dropout
Clean
the
capstan
and
pinch
roller.
Incomplete
erasure.
Magnetized
erasing
head
Demagnetize
the
erasing
head.
18