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Troubleshooting
B
DCX3300 High-Definition Dual Tuner / External DVR Set-top • User Guide 41
365-095-14427 x.2
Description Possible Solution
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
set-top is tuned to a 4:3 program.
Set the TV TYPE to 4:3 Pan-Scan. This enables the set-top 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 widescreen 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).
There are black bars
on all four sides of
the picture
This may occur on a 4:3 TV if the 4:3 OVERRIDE setting is OFF. To set 4:3
SD programming to fill the screen, depending on the capabilities of the TV,
set 4:3 OVERRIDE to 480i or 480p.
This may occur on a 16:9 TV if the active video for an SD broadcast is in
letterbox format. To confirm, wait for a commercial or look for a graphic,
such as a network logo. If the commercial fills the screen from top to
bottom, or the graphic appears below the active video, the program is
being letterboxed by the broadcaster. You can minimize this by activating
the zoom feature on the TV.
A broadcaster may include black bars on either side of a wide screen
broadcast. This is called a “hybrid” aspect ratio and results in a black
border surrounding the video on a 4:3 TV. Because this is part of the
broadcast, the set-top cannot correct the video. You may be able to
minimize the border using the zoom feature on the TV.
Colors do not appear
correctly
Be sure to match up each signal to the same YPbPr connection on the TV,
otherwise the colors will not appear correctly on your TV.
The set-top is
making a humming
noise.
The set-top includes a fan for cooling. During normal operation, the set-top
emits a low humming noise, similar to a personal computer. The noise
varies in volume occasionally when the speed of the internal fan adjusts to
changes in the temperature around the set-top.
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