Motorola DCT3412 - Manual (Page 71)

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 cable
terminal.
Verify that the cable terminal is powered on and tuned to an authorized cable channel.
Verify that all video cables between the cable terminal and the TV are firmly connected.
Verify that the coaxial cable feed is firmly connected to the cable terminal and the wall
jack.
If the cable terminal is connected to a home theater unit, verify that the home theater
unit is powered on and set to the appropriate input source.
If the cable terminal is connected to a TV through its HDMI connection, power off the
TV and then power off the cable terminal. Wait one second and then power on the
devices.
Not all HDTVs can display every output format (1080i, 720p, 480p, or 480i) available on
the cable terminal. To select a different format:
Ensure that your cable terminal is plugged into a power outlet and is turned off.
Press the
MENU key on the front panel. Your settings are displayed on the cable
terminal front panel display.
Press the ▲ and ▼ keys to display the HDMI/YPbPr OUTPUT setting.
1 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 cable
terminal.
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 your TV manual for information about
stretching 4:3 video).
If the cable 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 cable terminal is tuned to
a 4:3 program.
Set the TV TYPE to 4:3 Pan-Scan. This enables the cable 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 widescreens TVs offer a zoom feature that may be able to
remove the black bars. (See your TV manual for information about zooming 4:3 video.)
DCT3412 Installation Manual