Manual Sharp LC20B6U (page 48 of 53) (English, French, Portuguese, Spanish)

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Troubleshooting (Continued)

Problem Check item

• 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.

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

Antenna

Problem Check item

The picture

moves.

• 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 not sharp.

The picture

is doubled

or tripled.

• Make sure the antenna is facing the right direction.

• There may be reflected electric waves from mountains or buildings.

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 interfer-

ence.

• Use the unit as far apart as possible from devices that may cause

possible interference.

■ 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)

–

Reference

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Sharp LC20B6U Manual

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