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Troubleshooting
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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
49


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