Sharp LC 20D30U Antenna, ■Cautions regarding use in high and low temperature environments, Troubleshooting (Continued)

Troubleshooting (Continued)

■Before calling for repair services, make the following checks for possible remedies to the encountered symptoms.

Antenna

Problem	Check item
	• The reception may be weak.
The picture is not sharp.	• The quality of the broadcast may also be bad.
The picture moves.	• Make sure the antenna is facing the right direction.
	• Make sure the outside antenna is connected.
The picture is doubled or	• Make sure the antenna is facing the right direction.
tripled.	• There may be reflected electric waves from mountains or buildings.
	• There may be interference from automobiles, trains, high voltage lines,
The picture is spotted.	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
There are stripes on the	antennas of amateur radios and cellular phones may also cause
screen or colors fade.	interference.
	• Use the unit as far apart as possible from devices that may cause possible
	interference.

PC

Problem	Check item	Reference
		page
	• Make sure the RGB cable is properly connected.	37
	• Make sure the output signal of the PC and the input signal	38
There is no image.	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.	37
There is no sound.	• Check if the mute function activates, or if the volume is set to	18
	minimum.
The text is blurred.	• Adjust “CLOCK” and “PHASE” using the FINE SYNC. menu.	38
The image is not displayed in	• Adjust “H.POS.” and “V.POS.” using the FINE SYNC. menu.	38
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)

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