Technical Information - JVC LT-46Z70BU Service Manual

Troubleshooting
Problem
Wrong screen size
No picture, no sound
No sound
Green and distorted
screen
Some functions do not
work
Some inputs cannot
be selected in the
sub-picture
"Feature Not Available"
appears
"ACI Error" appears
Black or white dots
appear on the screen
33
(continued)
Actions
 Switch "Size" in "HDMI Setting" to "1" or "2".
Use the cable marked with HDMI logo.

Check if the device is compliant with HDMI.

Switch "Audio" in "HDMI Setting" to "Digital" or "Auto" for

HDMI devices, or "Analogue" or "Auto" for DVI devices.
(Not available for "EXT-6".)
Wait a little for the signal to stabilize when switching the

signal format for an "HDMI" device.
It is not a malfunction. Some functions (dark background) in

the menu do not work depending on the situation.
"EXT-4", "EXT-5", "EXT-6" inputs and PC mode cannot be

selected in the sub-picture.
RGB input signal of "EXT-1" and "EXT-2" are not available in

dual-picture mode.
Is the "T-V LINK" compatible device connected to "EXT-2"?

Is the SCART CABLE "Fully Wired"?

Is the "T-V LINK" compatible device turned on?

After confirming all the conditions above, press "OK" button
again.
Press 2 to start "ACI" again.

If you still receive the "ACI Error" after numerous tries, press
3 to cancel "ACI".
LCD panels use fine dots ("pixels") to display images.

While more than 99.99% of these pixels function properly,
a very small number of pixels may not light, or may light all
the time.
Please understand that this is not a malfunction.

Technical information

page
"T-V LINK" allows the TV to share information easily with a connected "T-V LINK" compatible device.
By using T-V LINK :
You can send the channel information programmed on the TV to the "T-V LINK" compatible device, so that

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both the TV and the external device have the same channel settings. When connecting a new external device,
channel information is loaded into it, allowing channel setup to be completed very quickly. For more details, refer
to the external device's manual.
You can easily record the TV programme you are viewing on a "T-V LINK" compatible device by using the

"DIRECT REC" feature. For more details, refer to the external device's manual.
–
What is "ACI" (Automatic Channel Installation)?
Some cable companies transmit a signal called "ACI" which contains information that allows TV channels to be
registered automatically on your TV.
When an ACI signal is received, "ACI Start / ACI Skip" appears in the "Auto Program" screen.
–
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Receivable broadcast systems
Depending on the country selected during "Auto Program", the receivable broadcast system differs.
UNITED KINGDOM: Receive only PAL-I.

FRANCE: Can receive SECAM-L.

To receive SECAM-L in countries other than France:
–
1) Change the "Country" to "France" in "Auto Program".
2) Press the "BACK" button to return to the menu and enter the channel using "Insert" or "Manual".
PC Signals that can be displayed
–
*Macintosh* computers are not supported.
(Macintosh is a registered trademark of
Apple Computer, Inc.)
If the signal doesn't appear, check that the vertical

frequency on the PC is set to "60Hz".
–
Connect a "DVI" device to "EXT-5 (HDMI)" using "DVI-HDMI" conversion cable. Connect analogue sound output of
the DVI device to L and R terminals in EXT-4.
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Set "Audio" in "HDMI Setting" to "Analogue" or "Auto"

34
EXT-6 input does not support analogue sound (EXT-4).
– 
EXT-6 input does not support DVI devices.

–
–
What is "T-V LINK"?
Resolution 640 x 480 (VGA) 1024 x 768 (XGA)
Vertical frequency (Hz)
Connect "DVI" devices
(P. 28)

60.0 60.0
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