Sharp Aquos LC-20B6U Operation Manual page 48

■ Before calling for repair services, make the following checks for possible remedies to the encountered symptoms.
Antenna
Problem
The picture
is not sharp.
The picture
moves.
The picture
is doubled
or tripled.
The picture
is spotted.
There are
stripes on
the screen
or colors
fade.
PC
Problem
There is no image.
There is no sound.
The text is blurred.
The image is not displayed in
the center of the screen.
■ Cautions regarding use in high and low temperature environments
• When the unit is used in a low temperature space (e.g. room, office), the picture may leave trails or appear slightly delayed. This is not
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)
• 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.
• Make sure the antenna is facing the right direction.
• There may be reflected electric waves from mountains or buildings.
• 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.
• 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 interfer-
ence.
• Use the unit as far apart as possible from devices that may cause
possible interference.
• 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.
• Make sure the PC audio cable is properly connected.
• Check if "PC SOUND SELECT" is set to "PC".
• Check if the mute function activates, or if the volume is not set to mini-
mum.
• V-CHIP BLOCK may have been activated while an item other than "PC" is
selected in "PC SOUND SELECT".
• Adjust "CLOCK" and "PHASE" using the FINE SYNC. menu.
• Adjust "H.POS." and "V.POS." using the FINE SYNC. menu.
Troubleshooting (Continued)
Check item
Check item
Reference
page
40
41
–
40
26
18
26
41
41
47