Sharp LC-20SH21U LC-20SH21U Operation Manual - Page 33

Troubleshooting (Continued) Ƈ Before calling for repair services, make the following checks for possible remedies to the encountered symptoms. Antenna Problem The picture is not sharp.(NTSC) The picture moves.(NTSC) The picture have block noise. (ATSC) The audio sound is discontinuous. Check item • 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 doubled or tripled. • Make sure the antenna is facing the right direction. ‡ 7KHUHPD\EHUHÀHFWHGHOHFWULFZDYHVIURPPRXQWDLQVRUEXLOGLQJV 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 interference. • Use the unit as far apart as possible from devices that may cause possible interference. 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. 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 the mute function activates, or if the volume is set to minimum. • Adjust "Phase" using the Auto Sync menu. • Adjust "Horizontal position" and "Vertical position" using the Auto Sync menu. Reference page 31 31 - 31 16 21 21 Ƈ Cautions regarding use in high and low temperature environments ‡ :KHQWKHXQLWLVXVHGLQDORZWHPSHUDWXUHVSDFHHJURRPRI¿FH WKHSLFWXUHPD\OHDYHWUDLOVRUDSSHDUVOLJKWO\GHOD\HG7KLVLVQRW 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) 33