JVC LT-Z32SX4B Service Manual page 160

Troubleshooting
• When viewing images from commercially
available video software products, or
videos from videotapes which have been
recorded improperly, the top of the image
may be distorted. This is due to the
condition of the video signal. There is
nothing wrong with the TV.
• Since this TV is designed to make full use
of the resolution of the original video
source, the motion may appear unnatural
when the video source is input with
progressive-scanning component signals.
If this occurs, change the output setting of
the connected device to interlace-
scanning component signal output. See
the instructions that came with the device
for more information.
Poor sound
• Have you adjusted BASS or TREBLE
properly? If not, follow the description
"BASS" or "TREBLE" on page 29.
• When TV channel reception is poor, it can
be hard to hear stereo or bilingual sound.
In this case, follow the description
"STEREO / I • II" on page 29 to hear the
sound more easily by changing it to a
mono sound.
If the TV does not respond to the
remote control
• Have the batteries of the remote control
worn out? Follow the description "Putting
the batteries into the remote control" on
page 8 and replace them with new batteries.
• Have you attempted to use the remote
control from the sides or rear of the TV or
from more than seven metres away from the
TV? Use the remote control in front of your
TV or from less than seven metres away.
• When you are viewing a teletext
programme, you cannot operate the
menus. Press the 4 button to
return to the ordinary TV programme, and
then try operating the menus.
• If the TV suddenly stops responding,
disconnect the power cord of the TV from
the AC outlet. Connect them to the AC
outlet again to turn on the TV. If the TV
returns to a normal state, it is not a failure.
46
Other issues
• If the CHILD LOCK function set to ON,
you cannot operate the TV with the front
control buttons of the TV. Set the CHILD
LOCK function to OFF.
• When the SLEEP TIMER function or
AUTO SHUTOFF function operates, the
TV is automatically turned off. If the TV
suddenly turns off, try to press the #
(standby) button to turn on the TV once
again. If the TV goes back to normal,
there is no problem.
• When the TV is receiving a wide-screen
signal (WSS) or a signal from an external
device affecting the screen size, the
ZOOM mode automatically changes.
When you want to resume the previous
ZOOM mode, press the c button
again.
• It takes a short period of time from the
time an operation such as changing
channels is performed until an image is
displayed. This is not a fault. This is the
time needed for the image to stabilise
before it can be displayed.
• The TV may make a crackling sound due
to a sudden change in temperature. The
picture or sound may be normal. If you
hear crackling sounds frequently while
you are viewing the TV, there may be
other causes. As a precaution, ask your
service technician to inspect it.
• The top of the TV and the screen may
become hot during use but this has no
affect on the performance of the TV.
Make sure that the ventilation holes are
not blocked.
• When the picture is unstable, the screen
may become white for a moment. This
happens when the signal which drives the
liquid crystal is missing. This is not a
fault.
• When a still image has been displayed for
a long period, a faint residual image may
remain on the screen for a short time after
the power has been turned off or when
another image is displayed. This is not a
fault and the image will eventually
disappear.