Maintenance 23

Notes:
If the problem is not solved by using these troubleshooting instructions,
turn off your TV, then turn it on again.
Contact us by logging on to www.dynexproducts.com or by calling DYNEX
Customer Service at (800) 304-2204 (USA and Canada only).
Maintenance
Just like with any other household appliance, the performance and life-
expectancy of your TV depends on how well you maintain it. Follow the
procedures described here to clean the TV case and the LCD screen.
Cautions:
• Make sure that the TV is turned off and the power cord is
disconnected from the power outlet before cleaning the TV.
• Never spray or pour any liquid directly onto the screen or the case.

Cleaning

• Clean your TV with a soft, dry cloth. If surfaces are extremely
dirty, use a soft cloth dampened with a small amount of
non-ammonia, non-alcohol-based, mild, non-abrasive
detergent.
• Clean the screen with a clean, soft, lint-free cloth. If additional
cleaning is necessary, apply a small amount of non-ammonia,
non-alcohol-based glass cleaner onto a clean, soft, lint-free
cloth, then wipe the screen.
Specifications
Design and specifications are subject to change without notice.
Dimensions and weight are approximate.
No picture • Make sure that the video input cable is
correctly connected to the appropriate
terminal, and that the correct input mode is
enabled. To illustrate, when a VGA cable is
connected to display a computer screen,
the PC input mode must be enabled.
• In TV mode, verify that the antenna is
correctly connected and that the preferred
channel is enabled in the channel list. Press
MENU and select Channels, Channel List.
•Press MENU and select Picture to adjust
the display settings.
• If you are using a Macintosh computer that
is older than a G3 model, you need a
Macintosh adapter.
No picture or the No
Signal message
appears when a VGA
cable is connected
• Make sure that the VGA cable is correctly
connected to the TV’s VGA port.
• Decrease the video resolution setting on
the computer and try again.
•Press MENU and select Picture to adjust
the display settings.
• Decrease the video resolution setting on
the computer and try again.
The picture is cut off
or appears in a
sidebar screen
•Press ZOOM and make sure that the
Normal option is selected.
Poor image quality
in TV mode (such as
a cutoff picture,
snowy images)
• Check your antenna connection. If
necessary, rotate the antenna and wait up
to ten seconds for a signal.
• Reduce the use of signal splitters and
excessively long cables.
• Replace poor antenna cables and/or
connectors to improve signal quality.
•Press ZOOM and make sure that the
Normal option is selected.
•Press MENU, select Picture, Advanced,
then adjust the Noise Reduction setting.
• In HDMI mode, make sure that the external
device is compatible with your TV.
Wrong, abnormal, or
missing colors
• If any colors (such as red, green, or blue) are
missing, check the video cable to make sure
that it is securely connected. Loose or
broken pins in the cable connector could
cause an improper connection.
•Press MENU and select Picture, Settings to
adjust the Tint and Color settings. You can
also select Picture, Advanced to adjust the
Color Temperature setting.
• Connect the TV to another computer and
check to determine if the problem is with
the computer screen.
No sound • Make sure that the audio input cable is
correctly connected to the appropriate
terminal and that the correct input mode is
enabled.
• The volume may be muted, press (Mute)
or the Vol+ key to turn on the volume.
•Press MENU and select Audio to adjust the
Bass, Treble, an d Balance settings.
• If you are using the TV speaker s, press
MENU and select Audio to make sure that
the TV Speakers option is set to ON.
• If you are using an external audio device,
press MENU and select Audio to make sure
that the TV Speakers option is set to OFF,
then make sure that the volume on the
external audio device is turned on.
Problem Solution
TV model DX-L321-10A
TV panel Type
Resolution
Color
Viewing angle
Contrast ratio
Brightness
Response time
31.5-inch Active matrix WXGA TFT LCD
1366 x 768 (RGB vertical stripe)
16.2 million
176° horizontal,176° vertical
3000:1
400 nits
8.5 ms
Audio/video
input
terminals
VGA (75 ohms, 0.7 Vp-p) + PC audio-in (mini-stereo)
H/V separated (TTL) for PC; fh: 30-63 kHz, fv: 50-75 Hz
HDMI 1 and HDMI 2 + RCA (L/R) stereo
TV tuner
Component 1 (Y,Pb,Pr) and Component 2 (Y,Pb,Pr) +
RCA (L/R) stereo
Composite 1 and Composite 2 + two RCA (L/R) stereo
Audio/video
output
terminals
RCA (L/R) stereo
SPDIF (optical)
Speaker
output
5W x 2 channels
Image
processor
ATI Xilleon™ 241
TV system
support
NTSC and ATSC
TV
compatibility
480i, 480P, 720P, 1080i
DX-L321-10A_09-0407_MAN_ENG_V3.book Page 23 Wednesday, May 13, 2009 11:38 AM