Dish Network 722_TOC, Руководство пользователя

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Reference
126
Troubleshooting Tables
Watching A Program
What Is Happening Possible Reason What to Do
The receiver front panel power light
is on, but the TV image:
• is black (no picture)
• is frozen
• has break-ups
• has snow
• shows small squares of various
colors
• The TV set may not be
working properly • Make sure that the TV set is plugged into an
electrical outlet.
• Make sure the outlet has electrical power.
• Make sure that the TV is turned on and
tuned to the correct input.
• Make sure that the TV brightness and
contrast are adjusted correctly.
• Use the RECOVER button (page 82).
• The TV may be connected to
the wrong input • Make sure that the TV is connected properly
to the receiver.
• Make sure that the TV’s text mode and
closed captioned features are turned off.
• Check that the system has been installed
correctly.
• Make sure that all required coaxial cables
are in place, and check that all cable
connectors are tight and dry (for outdoor
cables).
• If the TV and the receiver are
working properly, there may
be interference with the
satellite signal. • Make sure that the satellite dish has a clear
line of sight to the satellite.
• Check whether branches or leaves have
grown into the line of sight.
• Make sure that the satellite dish is aimed at
the satellite. Check the strength of the signal
using the Point Dish screen, as described
on page 117. Consult your installer to re-aim
the dish, if necessary, to obtain the
maximum possible signal strength.
• Note the local weather conditions. Heavy
rain, snow, or cloud cover may be interfering
with transmission of the satellite signal.
Remove any snow or other debris which
may have collected on the satellite dish
• You have selected an HD
mode your HDTV does not
support. • Refer to your HDTV user’s guide.
The receiver front panel power light
is on, and there is a picture on the
TV screen, but the picture:
• has sparkles or is grainy
• has a herringbone pattern
• lacks color or vertical hold
• wobbles
• looks “washed out” or fuzzy. • The TV set may not be
working properly. • Make sure that the TV brightness and
contrast are adjusted correctly, and that the
TV is working properly.
• If the receiver is connected to
the remote TV using the RF or
VHF connections, there may
be a strong local broadcast on
the same channel, or a
channel adjacent to the one to
which the TV is tuned. • Make sure that the TV is connected properly
to the receiver.