JVC CA-NXF30 Instructions Manual page 68

Troubleshooting (continued)
■ General (continued)
Problem
No sound is produced.
The sound is weak and
can hardly be heard.
The sound is distorted.
A radio broadcast has
interference from noise.
A radio broadcast
cannot be received.
A noise is produced
from the rear of the main
unit.
The HDMI CEC function
does not work.
When you disconnect
the HDMI cable and
connect it again, the
HDMI CEC function
does not work properly.
■ For a loaded disc
Problem
A disc cannot be played
back.
65
Possible cause
The speakers are not
connected correctly.
Headphones are connected.
The sound is turned off.
If "NO AUDIO" is displayed in
the display window, the disc
may have been produced
through illegal copying.
The volume level is low.
The volume is too high.
The antennas are not
connected correctly.
The internal cooling fan
produces the noise as the fan
rotates.
The connected TV is not
compatible with the HDMI CEC
function.
"OFF" is selected for the "CEC"
setting.
The previous connection setting
is stored on the main unit.
Possible cause
If "REGION CODE ERROR!"
appears on the TV screen, the
region code number of a disc is
not compatible with this system.
(only for a DVD VIDEO)
If "CANNOT PLAY THIS DISC"
appears on the TV screen, the
disc cannot be played back with
this system.
The disc is upside down.
Moisture has condensed on the
lens.
Possible solution
Connect the speakers correctly.
Disconnect the headphone plug.
Restore the sound.
Check the disc at the store where
it was purchased.
Increase the volume level.
Turn down the volume.
Connect the antennas correctly.
The noise is not a malfunction.
The cooling fan is used to prevent
overheating of the main unit.
Refer to the operation manual of
the TV.
Select "ON 1" or "ON 2" for the
"CEC" setting.
Select "OFF" for the "CEC" setting,
and then select "ON 1" or "ON 2"
again.
Possible solution
Confirm the region code number
compatible with this system.
Confirm the disc type whether it is
playable with this system.
Place the disc on the disc tray with
the printed surface facing up.
Leave the main unit turned on,
wait for approximately 1 or 2
hours, and then operate the main
unit.
Reference
page
6
14
13
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12
12
5
12
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39
39 and 57
Reference
page
60
60
19
58