User guide

Troubleshooting
B
DCX3300 High-Definition Dual Tuner / External DVR Set-top • User Guide 40
365-095-14427 x.2
Description Possible Solution
There is no audio
from the center
and/or surround
speakers of a home
theater receiver
connected to the
set-top
Not all programs feature full Dolby Digital [5.1] or Dolby Digital Plus [7.1]
surround sound. In some cases, the programs may only contain left and
right stereo audio.
• Verify that the S/PDIF cable (coaxial or optical) is firmly connected
to the set-top and the home theater receiver.
• 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 set-top.
• Verify that the set-top is powered on and tuned to an authorized
cable channel.
• Verify that all video cables between the set-top and the TV are
firmly connected.
• Verify that the coaxial cable feed is firmly connected to the set-
top and the wall jack.
• 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.
• If the set-top video output is connected to a TV through an HDMI
connection, power off the TV and then power off the set-top.
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 set-top. To select a different format:
• Ensure that your set-top is plugged into a power outlet and is
turned off.
• Press the MENU key on the remote control. Your settings are
displayed on the 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 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 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 set-top is connected to a wide screen TV, verify that the TV TYPE is