Sharp HT-SB250 (BK Operation Manual page 13

Troubleshooting chart
Many potential problems can be resolved
by the owner without calling a service
technician.
If something is wrong with this product, check
the following before calling your authorised
SHARP dealer or service center.
General
■
Symptom
no sound is
heard.
noise is
heard during
playback.
When a button
is pressed, the
unit does not
respond.
The power is
not turned on.
The information
is not displayed
even if the unit
is turned on.
Possible cause
Is the input signal
●
(selection) set
properly?
Is the volume
●
level set to "0"?
Is muting
●
activated?
Move the unit
●
away from any
computers or
mobile phones.
set this unit to
●
the stand-by
mode and then
turn it back on.
is the unit
●
unplugged?
(Refer to page 8.)
the protection
●
circuit may be
activated. Unplug
and plug in the
power lead again
after 5 minutes or
more.
is the unit set
●
to "Display off
mode"?
Remote control
■
Symptom
the remote
control does
not operate
properly.
The unit cannot
be turned on
with the remote
control.
TV cannot be
operated with
the remote
control.
E-
Possible cause
Is the battery
●
polarity correct?
Is the battery
●
dead?
Is the distance or
●
angle incorrect?
Are there any
●
obstructions in
front of the unit?
Is there a strong
●
light shining
on the remote
sensor?
is the remote
●
control for
another
equipment used
simultaneously?
Is the AC power
●
lead of the unit
plugged in?
Is the battery
●
inserted?
Depending on
●
the model, some
or all functions
may not be
operable using
the remote
control of this
unit. In this case,
use the remote
control supplied
with the TV.