Sharp LC-20SH21U Flat Panel Television User Manual


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Troubleshooting (Continued)
Problem Check item
Reference
page
There is no image.
• Make sure the RGB cable is properly connected.
• Make sure the output signal of the PC and the input signal
setting of the LCD TV set are matched.
• Some software prohibit video playback on an external display
when playing back a video with a notebook PC. This is not
attributable to a problem with the LCD TV set.
31
31
–
There is no sound.
• Make sure the PC audio cable is properly connected.
• Check if the mute function activates, or if the volume is set to
minimum.
31
16
The text is blurred. • Adjust “Phase” using the Auto Sync menu. 21
The image is not displayed in
the center of the screen.
• Adjust “Horizontal position” and “Vertical position” using the
Auto Sync menu.
21
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Before calling for repair services, make the following checks for possible remedies to the encountered symptoms.
Problem Check item
The picture is not sharp.(NTSC)
The picture moves.(NTSC)
The picture have block
noise. (ATSC)
The audio sound is
discontinuous.
• The reception may be weak.
• The quality of the broadcast may also be bad.
• Make sure the antenna is facing the right direction.
• Make sure the outside antenna is connected.
The picture is doubled or
tripled.
• Make sure the antenna is facing the right direction.
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The picture is spotted.
• There may be interference from automobiles, trains, high voltage lines,
neon lights, etc.
• There may be interference between the antenna cable and AC cord. Try
positioning them further apart.
There are stripes on the screen
or colors fade.
• Is the unit receiving interference from other devices?
Transmission antennas of radio broadcasting stations, transmission
antennas of amateur radios and cellular phones may also cause
interference.
• Use the unit as far apart as possible from devices that may cause
possible interference.
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Cautions regarding use in high and low temperature environments
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a malfunction, and the unit will recover when the temperature returns to normal.
• Do not leave the unit in a hot or cold location. Also, do not leave the unit in a location exposed to direct sunlight or near a heater, as
this may cause the cabinet to deform and the LCD panel to malfunction.
Storage temperature: –4°F to +140°F (–20°C to +60°C)
Antenna
PC
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