Troubleshooting Chart - Sharp HT-DV40H Operation Manual

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 centre.
General
Symptom
The power is not turned
on.
No sound is heard.
The sounds from
speakers are not well
balanced.
Noise is heard during
playback.
When a button is pressed,
the unit does not respond.
Interference or noise
occurs on the TV image.
The display on the unit is
dark.
No images are displayed.
Possible cause
Is the unit unplugged?
Is the volume level set to "0"?
Are the headphones connected?
Are the speaker wires
disconnected?
Are the speaker wires connected
to the wrong channels?
Move the unit away from any
computers or mobile phones.
Set the unit to the power stand-by
mode and then turn it back on.
If the unit still malfunctions,
disconnect the unit from the
mains for 30 seconds, then
reconnect.
Is the unit placed near TV with
internal aerial? Use an external
aerial.
Is the display in the dimmer
mode?
Is the TV turned on?
Is the TV input switched on?
DVD player
Symptom
Even though a disc is Is the disc loaded upside down?
loaded, "No Disc" is
Is the disc very dirty?
displayed.
Does the disc satisfy the standards?
Is the unit located near excessive
vibrations?
Playback sounds are Is condensation formed inside the
skipped. unit?
The control buttons Is the disc very dirty?
do not function.
Does the disc satisfy the standards?
Music or video
Is the unit located near excessive
playback is
vibrations?
interrupted.
Is condensation formed inside the
unit?
Pictures and sound Is the disc very dirty?
are skipped.
Is the unit located near excessive
vibrations?
Is condensation formed inside the
unit?
The unit does not Is a disc other than a DVD (region
operate even if the number at the back of the unit), audio
power is on. CD, CD-R or CD-RW loaded?
Images cannot be Are the video and audio cables
played back. (Sound connected improperly?
is not heard.)
Is a disc other than a DVD (region
number 2 or ALL), audio CD, CD-R or
CD-RW loaded?
Is the disc very dirty?
Is the disc loaded upside down?
Is the optical pick up dirty?
Is the TV input set to video (VIDEO 1,
VIDEO 2, etc.)?
Is the unit turned on?
Possible cause
HT-DV40H
HT-DV50H
63