Troubleshooting Chart - Sharp DX-AT50 Operation Manual

Troubleshooting chart

SD-AT50
DX-AT50
ENGLISH
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
No sound is heard.
The sounds from speakers
are not well balanced.
Noise is heard during play-
back.
When a button is pressed,
the system does not re-
spond.
Interference or noise occurs
on the TV image.
Timer playback does not
start.
The display on the system is
dark.
The power is not turned on.
E-49
Possible cause
! Is the volume level set to "0"?
! Are the headphones connected?
! Are the speaker wires disconnect-
ed?
! Is the speaker size set to NO (OFF)?
! Are the speaker cords connected to
the wrong channels?
! Is each speaker placed at the same
distance from the listener?
! Are speakers adjusted to the same
level?
! Move the system away from any
computers or mobile phones.
! Set the system to the power stand-
by mode and then turn it back on. If
the system still malfunctions, reset it.
! Is the system placed near TV with in-
ternal antenna? Use an outdoor an-
tenna.
! Did you remove the plug from the
wall jack, or did a power failure oc-
cur?
! Hold down the DISPLAY button on
the remote control for 2 seconds or
more to select "ON".
! Is the system unplugged?
! Is the system connection cord (for
DVD player) disconnected?
! The protection circuit may be acti-
vated. Unplug and plug in the power
cord again after 5 minutes or more.
Symptom
The sound is not reproduced
in the Dolby Digital 5.1 ch.
No images are displayed.
Reference
page
P. 18
" Tuner
P. 28
P. 12
Symptom
P. 41
Radio makes unusual noise
P. 12 consecutively.
P. 16
P. 42
" Remote control
P. 50
Symptom
The remote control does not
P. 13
operate properly.
P. 24
P. 18
P. 18
P. 11
P. 50
The system cannot be turned
on with the remote control.
Possible cause
! Is the initial setup screen set to
"DPCM"? Change it to "BIT-
STREAM".
! Is TV turned on?
! Is the input of TV switched?
Possible cause
! Is the system placed near the TV or
computer?
! Is the FM antenna or AM loop anten-
na placed properly? Move the an-
tenna away from the AC power cord
or the system if located near.
Possible cause
! Is the battery polarity respected?
! Are the batteries dead?
! Is the distance or angle incorrect?
! Are there any obstructions in front of
the AV control unit?
! Is the remote control sensor ex-
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?
! Are the AC power cords of the DVD
player and the subwoofer/amplifier
unit plugged in?
! Are the batteries inserted?
Reference
page
P. 20
P. 47
P. 47
Reference
page
P. 13
P. 13
Reference
page
P. 17
P. 17
P. 17
P. 18
P. 17