Sharp LC-20AV4U LC-13AV4U LC-15AV4U LC-20AV4U Operation Manual - Page 7

TROUBLESHOOTING GUIDE Sometimes a performance problem can be easily solved by checking seemingly apparent but often overlooked possibilities. Before arranging for service, check these items. It could save your time and money. PROBLEM Remote Control Doesn't Work. Bars On Screen. Picture Distorted. Picture Rolls Vertically. No Color. Poor Reception on Some Channels. Weak Picture. Lines or Streaks in Picture. Ghosts in picture. Picture Blurred. Sound OK, Picture Poor. Picture OK, Sound Poor. No Picture or Sound. Different color marks on screen. Black or Luminous point on Screen. QUICK SERVICE CHECK LIST POSSIBLE REMEDY Try a new channel, if OK, then possible station trouble. Is TV plugged in? Power at outlet? Is TV's POWER button on? Is antenna connected to terminal on the back of the set? If outside antenna is being used, check for broken wire. Check for local interference. Turn off with POWER button and then turn it on after about a minute. Adjust COLOR control. Adjust CONTRAST & BRIGHT control. Check batteries in Remote Control. Move the TV away from the nearby appliances which have Magnetism. Turn off using the POWER button, then turn it on again 30 minutes or so later. Temperature around is too low. Life of the Back Light is approximately 50,000 hours. Ask the Service Center to replace. It is quality of the LCD Panel. Closed Caption Problem My TV is showing captions that are misspelled. Possible Remedy You are watching a live broadcast and spelling errors made by the closed captioning production company may pass through uncorrected. A prerecorded program will not show any misspelled words because of the normal time available for editing the captions. My TV will not show the text in its entirety or there is a delay of what is being said. Captions that are delayed a few seconds behind the actual dialogue are common for live broadcasts. Most captioning production companies can display a dialogue to a maximum of 220 words per minute. If a dialogue exceeds that rate, selective editing is used to insure that the captions remain up-to-date with the current TV screen dialogue. My captions are scrambled with white boxes on the TV screen. Interference caused by building, power lines, thunderstorms, etc. may cause scrambled or incomplete captions to appear. My program guide listed a TV show as being closed captioned Broadcasters may at times use a time compression process to the actual program so that addition- but none of the captions were displayed. al advertising time can be given. Since the decoder cannot read the compressed information, cap- tions will be lost. My prerecorded videotape does not show any captions. The tape box mentions it being closed captioned. The videotape was either an illegal copying or the tape duplicating company accidentally left out the captioning signals during the copying process. My TV screen shows a black box on certain channels. You are in the TEXT mode. Select CAPTION mode or CAPTION [OFF]. The LCD panel is manufactured to provide many years of useful life. Occasionally a few non active pixels may appear as a tiny spec of color. This in not to be considered a defect in the LCD screen. MAINTENANCE CABINET CLEANING ● Wipe the front panel and other exterior surfaces of the TV with a soft cloth immersed in lukewarm water and wrung dry. ● Never use a solvent or alcohol. Do not spray insecticide liquid near the TV. Such chemicals may cause damage and discoloration to the exposed surfaces. PICTURE SCREEN CLEANING If the LCD panel should require cleaning, wipe it with a cotton or soft cloth. Before cleaning the picture screen, disconnect the power cord.