Zenith a50m91w 操作ガイド
R E F E R E N C E T R O U B L E S H O OT I N G
P A G E 4 7
Some quick
and easy
tips to fixing
problems
yourself.
and easy
tips to fixing
problems
yourself.
Troubleshooting
206-3360-O
SYMPTOMS
Snowy picture and unclear sound.
Multiple images or ‘ghost shadows.’
Interference: Sharp lines across
the screen and lousy sound.
the screen and lousy sound.
Normal picture but no sound.
No picture and unclear sound.
No picture and no sound.
No color, but the sound is O.K.
Picture has a big black box
on it, but the sound is O.K.
on it, but the sound is O.K.
Picture has two horizontal
black bars, one on top and
one on bottom.
black bars, one on top and
one on bottom.
SOLUTIONS
• Check your antenna connection or location
• Check your cable input.
• Check to see if the TV/.VCR button on your VCR has the TV selected.
• Check your antenna direction and/or location.
• Check your cable input
• Make sure the cable from your antenna to your Entertainment Machine is
• Check your cable input.
• Check to see if the TV/.VCR button on your VCR has the TV selected.
• Check your antenna direction and/or location.
• Check your cable input
• Make sure the cable from your antenna to your Entertainment Machine is
properly connected.
The following may cause image problems or distortion:
Electrical appliances, powerful lights, cars, trucks; computers or
portable phones; medical equipment
• If possible increase the distance between your Entertainment Machine and
Electrical appliances, powerful lights, cars, trucks; computers or
portable phones; medical equipment
• If possible increase the distance between your Entertainment Machine and
the offending appliance. Or shut one of them off.
• Check volume levels.
• Make sure the TV is not Muted.
• Try another channel. The problem may be the broadcast, not your
• Make sure the TV is not Muted.
• Try another channel. The problem may be the broadcast, not your
Entertainment Machine.
• Are the Audio A/V cables properly installed?
• Are the wires for external speakers (if you have external speakers)
• Are the wires for external speakers (if you have external speakers)
properly installed?
• Make sure your speakers are turned on under the Audio menu.
• If your audio mode is set to SAP, that channel may not have a SAP program.
• If your audio mode is set to SAP, that channel may not have a SAP program.
• Are you in TV or cable tuning mode, and should be in the other?
• Make sure output channels on all A/V equipment are on the same channel (3 or 4).
• Check that all connections are tight.
• Make sure output channels on all A/V equipment are on the same channel (3 or 4).
• Check that all connections are tight.
• Is the AC power plugged in?
• Check that your AC power outlet works. (Test it by plugging in something
• Check that your AC power outlet works. (Test it by plugging in something
else or try another plug.)
• Make sure your brightness and audio controls are set properly.
• Try another channel. The problem may be with the broadcast.
• Try another channel. The problem may be with the broadcast.
• Check the color control in the Video menu.
• Try another channel. The problem may be with the broadcast.
• Try another channel. The problem may be with the broadcast.
• The CC (closed caption) option may be in Text mode. Select Caption 1, or OFF
in the Captions/Text menu.(See page 25).
• Your program is in letterbox. This means that the shape of your TV is a
square, but the program is a rectangle. Think of the bars as empty space the
program doesn’t fill; not picture that’s blocked out. Because this format is a
direct representation of film as you see it in the movies, you are actually seeing
MORE of the program when you see those bars. Trust us.
program doesn’t fill; not picture that’s blocked out. Because this format is a
direct representation of film as you see it in the movies, you are actually seeing
MORE of the program when you see those bars. Trust us.