Troubleshooting B
High-Definition All-Digital Dual Tuner DVR Set-top DCX3501–M • User Guide 47
365-095-16095-x.2
Problem
Possible Solution
set-top
Verify that the home theater receiver is set to a surround sound audio mode (Dolby Pro
Logic®, Dolby Pro Logic II®, Dolby Pro Logic IIx®).
Verify that the receiver is properly configured to work with all connected speakers.
There is no video on the
TV screen
Verify that the TV is powered on and set to the appropriate input source for the DCX set-
top.
Verify that the DCX set-top is powered on and tuned to an authorized cable channel.
Verify that all video cables between the DCX set-top and the TV are firmly connected.
Verify that the coaxial cable feed is firmly connected to the DCX set-top and the wall jack.
If the DCX 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.
If the DCX set-top video output is connected to a TV through an HDMI connection, power
off the TV and then power off the DCX set-top. Wait one second and then power on the
devices.
Not all HDTVs can display every output format (1080p60, 1080p30, 1080p24, 1080i, 720p,
480p, or 480i) available on the DCX set-top. To select a different format:
• Ensure that your DCX set-top is plugged into a power outlet and is turned off.
• Press the MENU key on the front panel. Your settings are displayed on the DCX set-top
front panel display.
• Press the ▲ and ▼ keys to display the HDMI/YPbPr OUTPUT setting.
• 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 by the DCX set-top. On-screen graphics and captions
may still be overlaid by your TV, if enabled. Alternatively, use HDMI or component video
instead.
No closed captions
display
Verify on the User Settings menu that closed captions are enabled on the DCX set-top.
Verify that closed captions are enabled on the TV.
Note: Closed captioning may not be available on the current program.
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 DCX 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.
There are black bars
above and below the
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.