Motorola DCT6400 Phase III Installation Manual page 64

Problem
There are black bars
on all four sides of
the picture.
There is a humming
noise.
Possible Solutions
This may occur on a 4:3 TV if the 4:3 OVERRIDE setting is OFF. To cause 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 terminal cannot correct the video. You
may be able to minimize the border using the zoom feature on the TV.
The DCT6400 provides an internal fan to cool its hard drive. During normal operation,
the fan emits a low humming noise, similar to a personal computer. The volume varies
occasionally when the fan speed adjusts to changes in the temperature around the
terminal. The hard drive remains on even when the terminal is turned off.
Troubleshooting
DCT6400 Phase III Installation Manual
5-3