- Motorola, Inc. All-Digital Cable Receiver user guide

6 TROUBLESHOOTING
19
Problem Possible Solutions
There is no
audio from the
center and/or
surround
speakers of a
home theater
receiver
connected to
the DCH
receiver.
• Not all Dolby Digital
®
programs feature full 5.1
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 DCH receiver and the
home theater receiver.
• Verify that the home theater receiver is set to a
surround sound audio mode (Dolby Digital, Dolby
Pro Logic II
®
, Dolby Pro Logic
®
).
• 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 DCH receiver.
• Verify that the DCH receiver is powered on and
tuned to an authorized cable channel.
• Verify that all video cables between the DCH
receiver and the TV are firmly connected.
• Verify that the coaxial cable feed is firmly
connected to the DCH receiver and the wall jack.
• If the DCH receiver 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.
No closed
captions
display.
• Verify that closed captions are enabled on the TV.
• 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 (see your TV manual
for information about stretching 4:3 video).
There are black
bars above and
below the
picture.
• Some SD programs are broadcast in the
letterbox format with black bars above and below
the picture. Some wide-screens 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).