Motorola VIP1200/1216 - Manual (Page 26)

3 TROUBLESHOOTING
16
There is no
audio when
viewing TV
channels. Verify that the Mute button on the remote control has not
been pressed. Press Mute on the remote control to
restore sound.
Verify that the set-top box audio output is connected to
the TV or home theater receiver.
If the set-top box audio output is connected to the TV,
verify that the Mute button on the TV has not been
pressed.
If the set-top box audio output is connected to a home
theater receiver, verify that the home theater receiver is
set to the appropriate input source and its Mute button
has not been pressed.
Verify that you have the correct cables for the audio ports.
Verify that the audio cables are firmly connected between
the set-top box and the audio playback device (TV, home
theater receiver, etc.).
There is no
audio from the
center and/or
surround
speakers of a
home theater
receiver
connected to
the set-top
box. 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 is firmly connected to the set-
top box 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 home theater receiver is properly
configured to work with all connected speakers.
The set-top
box is making
a humming
noise. The set-top box includes an integrated hard drive and a
fan for cooling. During normal operation, it 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 box. Please note the hard drive will stay on
even when the set-top box is turned off.