Motorola DCT6400 Series Installation Manual page 56

5-2 Troubleshooting
Problem
There is no video on the
TV screen.
There are no graphics,
closed captions, or
program guides
appearing on the TV
screen.
There are black bars to
the right and left of the
picture.
DCT6400 Series Installation Manual
Possible Solutions
Verify that the TV is powered on and set to the appropriate input source for the
set-top.
Verify that the set-top is powered on and tuned to an authorized cable channel.
Verify that the coaxial cable is firmly connected to the set-top and the wall jack.
Verify that all video cables between the set-top and the TV are firmly connected.
The set-top DVI output may not yet be enabled. Use the component video
(Y Pb Pr) output instead.
If the set-top 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 set-top is plugged into a power outlet and is turned off.
2 Press the key on the front panel. Your settings are displayed on the
MENU
front panel.
3 Press the ▲ and ▼ keys to display the DVI/YPbPr OUTPUT setting.
4 Press the ► key to cycle through the available output formats until a picture
displays on the TV.
The set-top cannot generate graphics on all video outputs at all times. If the
set-top is set to 1080i, 720p, or 480p output format, graphics are only available
on the high definition video outputs (DVI and component video). If the set-top is
set to 480i, graphics are available on all video outputs. For more information, see
"Graphics Overlaying the Video" in Section 3, "Installation."
If the set-top is connected to a standard definition (SD) TV, verify that the set-top
is configured to use the 480i output mode.
Verify that closed captions on the set-top have been enabled in the User Settings
menu.
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 set-top 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.