Manual Sharp LC-20DV20U Operation Manual (page 45 of 52) (English)

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Troubleshooting

Possible Solution

• Is the volume too low? (See page 13.)

Cautions regarding use in high and low temperature environments

Appendix

Problem

• No power

• Unit cannot be operated.

• Remote control unit does not

operate.

• Picture is cut off screen.

• Strange color, light color, or color

misalignment

• Power is suddenly turned off.

• No picture

• No sound

• Check if you pressed POWER on the remote control unit. (See page 13.) If the

indicator on the TV/DVD does not light up, press POWER on the TV/DVD.

• Is the AC cord disconnected? (See page 7.)

• Has the power been turned on? (See page 13.)

• External inﬂ uences such as lightning, static electricity, may cause improper

operation. In this case, operate the unit after ﬁ rst turning on the power of the

TV/DVD or unplugging the AC cord and replugging it in after 1 or 2 minutes.

• Are batteries inserted with polarity (+,

–

) aligned? (See page 8.)

• Are batteries worn out? (Replace with new batteries.)

• Are you using it under strong or ﬂ uorescent lighting?

• Is a ﬂ uorescent light illuminated near the remote control sensor?

• Are screen mode adjustments such as view mode choose made correctly? (See

page 22.)

• Adjust the picture tone. (See page 17.)

• Is the room too bright? The picture may look dark in a room that is too bright.

• Is the sleep timer set? (See page 11.)

• Check the power control settings. (See page 13.)

• The TV/DVD’s internal temperature has increased.

Remove any objects blocking vent or clean.

• Is connection to other components correct? (See pages 19 to 20.)

• Is correct input signal source selected after connection? (See page 19.)

• Is the correct input selected? (See page 19.)

• Is picture adjustment correct? (See page 17.)

• When the TV/DVD is used in a low temperature space (e.g. room, ofﬁ ce), the picture may leave trails or appear slightly

delayed. This is not a malfunction, and the TV/DVD will recover when the temperature returns to normal.

• Do not leave the TV/DVD in a hot or cold location. Also, do not leave the TV/DVD in a location exposed to direct sunlight

or near a heater, as this may cause the cabinet to deform and the Liquid Crystal panel to malfunction.

Storage temperature: – 4°F to +140°F (– 20°C to +60°C)

Possible Solution

Problem

• There is no image.

• There is no sound.

• The image is not displayed in

the center of the screen.

• Make sure the RGB cable is properly connected. (See page 27.)

• Make sure the output signal of the PC and the input signal setting of the LCD TV

set are matched.(See page 28.)

• 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. (See page 27.)

•

Check if the mute function activates, or if the volume is set to minimum. (See page 13.)

• Adjust “CLOCK” and “PHASE” using the PICTURE menu.

(See page 28.)

• Adjust “HOR POSITION” and “VER POSITION” using the PICTURE menu.

(See page 28.)

Troubleshooting-PC mode

5X20431A_E_.indb 445X20431A_E_.indb 44 5/19/2006 6:35:47 PM5/19/2006 6:35:47 PM

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Sharp LC-20DV20U Operation Manual Manual

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