Manual Sharp LC-37D90U Operation Manual (page 70 of 79) (English)

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Troubleshooting

Possible Solution

• Is the volume too low? (See page 17.)

• Is “Variable” selected in “Output Select”? (See page 52.)

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/with sidebar

screen.

• Strange color, light color, or color

misalignment

• Power is suddenly turned off.

• No picture

• No sound

• Check if you pressed TV POWER on the remote control unit. (See page 14.) If the

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

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

• Has the power been turned on? (See page 14.)

• 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 or

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

• Is the FUNCTION set correctly? Set it to the TV setting position.

• 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?

• Is the image position correct? (See page 44.)

• Are screen mode adjustments such as picture size made correctly? (See pages 49

to 50.)

• Adjust the picture tone. (See pages 24 to 25.)

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

• Check the input signal setting. (See page 47.)

• Is the sleep timer set? (See page 53.)

• Check the power control settings. (See page 27.)

• The unit's internal temperature has increased.

Remove any objects blocking vent or clean.

• Is connection to other components correct? (See pages 30 to 34.)

• Is correct input signal source selected after connection? (See page 47.)

• Is the correct input selected? (See page 47.)

• Is picture adjustment correct? (See pages 24 to 25.)

• Is “On” selected in “Audio Only”? (See page 52.)

• Is a non-compatible signal being input? (See page 70.)

• When the unit 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 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 Liquid Crystal panel to malfunction.

Storage temperature:

4°F to

140°F (

20°C to

60°C)

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Sharp LC-37D90U Operation Manual Manual

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