ZyXEL Communications VL470M Benutzerhandbuch

VIZIO VL420M/VL470M User Manual

Version 3/25/2009

www.VIZIO.com

General TV Problems

Solution

If HD content is not available view “Standard Definition” from a digital source.

Standard, analog TV will always be noticeably inferior to HD because your
digital flat panel TV has video that is many times better than old TV so you will
see interference and deficiencies you did not know you had.

You cannot see a picture.

Make sure the power button is ON (VIZIO logo glows white).

Make sure AC power cord is securely connected to the AC socket.

Press the INPUT button on the remote control to select a different input source.

Check the connections of external devices that may be connected to the HDTV.

If your HDTV is connected to a computer, press any button on your keyboard to
“wake” your computer.

If you are using an antenna, the signal strength of the channel may be low.
Make sure your antenna is connected securely to the TV and move the antenna
around the room or close to a window.

You see a distorted picture or

hear unusual sound.

You may be getting interference from electrical appliances, cars, motorcycles,
or fluorescent lights. If you have not mounted it on the wall, try moving your
HDTV to another location to see if this is the cause of the problem.

The picture has abnormal

patterns.

Check the connections of external devices that may be connected to the HDTV.

Make sure the specifications of external devices meet the specifications of your
HDTV (i.e. resolution).

If you are using an antenna, the signal strength of the channel may be low.
Make sure your antenna is connected securely to the TV and move the antenna
around the room or close to a window.

The display image does not

cover the entire screen.

If you are in RGB mode (Computer), make sure that H-Size and V-Position in
the On Screen Display (OSD) are set correctly.

If you are using TV, AV1, AV2 or Component with 480i input, press WIDE
button on the remote control to scroll through various screen modes.

You can see a picture but you

cannot hear sound.

Press Volume + (Up) on the remote control.

Press MUTE on the remote control to make sure that MUTE is not ON.

Check your audio settings. The audio may be set to SAP, or the speakers are
set to off.

Make sure that headphones are not connected.

Check the audio connections of external devices that may be connected to the
HDTV.

The TV has pixels (dots) that

are always dark or colored.

Your  HDTV  is  manufactured  using  an  extremely  high  level  of  precision
technology,  however,  sometimes  some  pixels  of  your  HDTV  may  not  display.
Pixel  defects  within  industry  specifications  are  inherent  to  this  type  of  product
and do not constitute a defective product.

You see “noise” or “trash” on

the screen.

When your HDTV’s digital capabilities exceed a digital broadcast signal, the
signal is up-converted (increased) to match your TV’s display capabilities. Up-
converting can cause noise or trash.

If you are using an antenna, the signal strength of the channel may be low.
Make sure your antenna is connected securely to the TV and move the antenna
around the room or close to a window.

You switch to a different input

and the volume changes.

The TV remembers the volume level from the last time you adjusted it. If the
sound level is higher or lower from another source, then the volume will change.

You switch to a different input

and the screen size changes.

The TV remembers the viewing mode from the last time you used a particular
input (AV-1, AV-2, Component, HDMI and TV).

Tips for High-Definition Users.

Your HDTV is an ideal platform for viewing High Definition Content.