SD-AT50
DX-AT50
E-49
Troubleshooting chart
Many potential problems can be resolved by the owner without calling a service tech-
nician.
If something is wrong with this product, check the following before calling your autho-
rized SHARP dealer or service center.
• General
Symptom Possible cause
Reference
page
No
sound
is
heard.
•
Is
the volume level set to
"O"?
P.18
• Are the headphones connected?
P.28
• Are the speaker wires disconnect-
P.12
ed?
• Is the speaker size set to NO (OFF)?
P.41
The sounds from speakers
• Are the speaker cords connected to
P.12
are not well balanced. the wrong channels?
•
Is
each speaker placed at the same
P.
16
distance from the listener?
• Are speakers adjusted to the same
P.42
level?
Noise is heard during play-
• Move the system away from any
-
back.
computers or mobile phones.
When a button is pressed,
• Set the system to the power stand-
P.
50
the system does not re-
by mode and then turn
it
back
on.
If
spond.
the system still malfunctions, reset
it.
Interference or noise occurs
• Is the system placed near TV with in-
P.13
on
the TV image.
ternal antenna? Use an outdoor an-
tenna.
Timer playback does not
• Did you remove the plug from the
P.
24
start.
wall jack, or did a power failure oc-
cur? Reset the clock.
The display
on
the system is
• Hold down the DISPLAY button
on
P.18
dark.
the remote control for 2 seconds or
more to select "ON".
The power
is
not turned on.
• Is the system unplugged?
P.18
• Are the system connection cords
P.
11
disconnected?
• The protection circuit may be acti-
P.
50
vated. Unplug and plug
in
the power
cord again after 5 minutes or more.
Symptom Possible cause
Reference
page
The sound
is
not reproduced
• Is the initial setting screen set to
P.20
in
the Dolby Digital
5.1
ch.
"DPCM"? Change it to "BIT-
STREAM".
No
images are displayed.
•
Is
TV turned on?
P.
47
•
Is
the input
of
TV switched?
P.47
• Tuner
Symptom
Possible cause Reference
page
The radio makes unusual
•
Is
the system placed near the TV or
P.
13
noises continuously. computer?
• Is the
FM
antenna orAM loop anten-
P.13
na placed properly? Move the an-
tenna away from the AC power cord
or the system
if
located near.
The preset channel cannot
•
Did
you
remove the
plug
from
the
wall
P.26
be recalled.
jack, or did a power failure occur?
Preset the channel again.
• Remote control
Symptom Possible cause
Reference
page
The remote control does not
•
Is
the battery polarity respected?
P.17
operate properly.
• Are the batteries dead?
-
• Is the distance or angle incorrect?
P.17
• Are there any obstructions
in
front of
-
the AV control unit?
•
Is
the remote control sensor ex-
P.17
posed to strong light (inverter fluo-
rescent light, direct sunlight, etc.)?
•
Is
the remote control for another
~
equipment used simultaneously?
• Are buttons
on
the front and back
-
faces of the remote control pressed
simultaneously?
The system cannot be turned
• Are the AC power cords of the DVD
P.
18
on
with the remote control.
player and the subwoofer/amplifier
unit plugged in?
• Are the batteries inserted?
P.17
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