JVC AV-21M535, AV-21M515, AV-21M315, AV-21V315, AV-25M515, AV-25M315 CRT Television User Manual


 
22
Troubleshooting
If a problem occurs when you are using the TV, check the below
troubleshooting guide before calling for repair.
Deactivate the BLUE BACK function if it is turned on.
Choose the appropriate sound system. Refer to
SOUND SYSTEM on page 12.
Check the aerial cable and its connection with the TV.
Interference occurs caused by other devices such as
an amplifier, personal computer, or a hair drier. Move
such devices away from your TV.
Interference occurs caused by signal reflecting from
mountains or building. Try to adjust the aerials
direction or use a better directionality antenna.
Choose the appropriate colour system. Refer to
COLOUR SYSTEM on page 9.
Adjust the COLOUR or BRIGHT setting. Refer to
PICTURE SETTING on page 10.
Inevitable phenomenon due to the nature of the
picture tube. This is not a malfunction.
This is due to the condition of the video signal
whereby the image was not recorded properly. This
is not a malfunction.
Adjust the sound frequency properly. Refer to
EQUALIZER on page 13.
The batteries may be exhausted. Replace with new
batteries (see page 7).
Ensure that you are operating the remote less than
seven meters from the front of your TV.
Press TV/VIDEO button to return to TV mode and try
operating the menus.
Deactivate the CHILD LOCK function if it is turned on
(see page 15).
No picture,
no sound
Snowy picture
Stripes appear on the
picture
Double-pictures
(ghosting) occur
Poor picture
White and bright still
image look as if it
were coloured
Top of the image from
software products or
video tape is distorted
Poor sound
Cannot operate the
remote control
Cannot operate the
menus
Cannot operate the
front control buttons
This may due to the magnetized device such as a
speaker near to your TV. Keep the device apart from
your TV. Alternately, you can also use the magnetic-
shielded speaker.
Image required time to stabilize before display. This
is not a malfunction.
This is due to a sudden change in temperature and it is
not a malfunction. If the crackling sound is too frequent,
request your service technician for inspection.
This is due to the static electricity of the picture tube
and it will not harm the human body. This is not a
malfunction.
Please check that the AUTO SIGNAL DETECT
function is on or off.
Press button (VCR or DVD Player) to turn the
machine off and turn it on again; do not turn the
machine off and on suddenly.
Inspect the video cable connection on VIDEO-2 that
they are connected properly.
Inspect the video cable connection on VIDEO-2 that
they are connected properly.
In a certain VCR or DVD Player, the function might
operate by the discontinuity of the signal.
In a certain VCR or DVD Player, the function might
operate by the discontinuity of the signal.
Video signal from VCR or DVD Player cause the
function runs properly to indicate that there are video
signal on VIDEO-2 channel.
Colour patches appear
at the corner of the
screen
Image takes a short
period to be displayed
TV may emitted
crackling sound
Feel a slight electric
shock when touching
the TV screen
After you connect the
signal to VIDEO-2 and
playback VCR or DVD
Player, the Auto Detect
does not work.
When you are watching
another channel that is
not VIDEO-2, AUTO
SIGNAL DETECT
works while
VCR or
DVD Player
was on.
While you are watching
TV on the other
channels, AUTO SIGNAL
DETECT works when
you press
1, 7, 3, ¡
or
8
on the front panel of
VCR or DVD Player.
After TV was on, AUTO
SIGNAL DETECT
works.
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