5-2
Troubleshooting
Problem Possible
Solutions
There is no video on
the TV screen.
Verify that the TV is powered on and set to the appropriate input source for the terminal.
Verify that the terminal is powered on and tuned to an authorized cable channel.
Verify that the coaxial cable is firmly connected to the terminal and the wall jack.
Verify that all video cables between the terminal and the TV are firmly connected.
If the DCT6400 video output is connected to a home theater unit, verify that the home
theater unit is powered on and set to the appropriate input source.
Not all HDTVs can display every output format (1080i, 720p, 480p, or 480i) available on
the DCT6400 Series. To select a different format:
1
Ensure that your terminal is plugged into a power outlet and is turned off.
2
Press
the
MENU
key on the front panel. Your settings are displayed on the front
panel.
3
Press
the
▲
and
▼
keys to display the HDMI/YPbPr OUTPUT setting.
4
Press
the
►
key to cycle through the available output formats until a picture
displays on the TV.
No graphics or
program guides
appear on the TV
screen
If you use the IEEE 1394 connection, on-screen graphics, including closed captions and
program guides, are not displayed. If possible, use HDMI or component video instead.
No closed captions
display
Verify on the User Settings menu that closed captions are enabled on the DCT6400.
Verify that closed captions are enabled on the TV.
There are black bars
to the right and left of
the picture.
Wide screen TVs display 4:3 programs in this format unless set to Stretch. Turn on the
4:3 OVERRIDE feature in the User Settings menu. This enables most wide screen TVs
to stretch the video to fill the screen (see the TV manual for information about stretching
4:3 video).
If the terminal is connected to a wide screen TV, verify that the TV TYPE is set to 16:9
in the User Settings menu.
Many HD programs are broadcast in pillar-box format with black bars to the left and
right of the picture. These programs are broadcast in 16:9 HD formats even though the
video is not 16:9.
There are black bars
above and below the
picture.
All 4:3 HDTVs display HD programs in letterbox format (black bars above and below the
picture) because of the shape of the display screen.
Turn on the 4:3 OVERRIDE feature in the User Settings menu. This enables most
standard screen TVs to display a full screen picture when the terminal is tuned to a 4:3
program.
Set the TV TYPE to 4:3 Pan-Scan. This enables the terminal to remove the black bars
above and below the picture when possible.
Some SD programs are broadcast in the letterbox format with black bars above and
below the picture. Some wide screens TVs offer a zoom feature that may be able to
remove the black bars (see the TV manual for information about zooming 4:3 video).
DCT6400 Phase III Installation Manual
