Motorola Home Theater System DCH70 ユーザーズマニュアル

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5 TROUBLESHOOTING 
 
16
 
Problem Possible 
Solutions 
There are black 
bars on all four 
sides of the 
picture. 
• 
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 DCH70 cannot correct the video. You 
may be able to minimize the border using the zoom 
feature on the TV.