Sharp LC-C4655U Service Manual - Page 11

LC-C4655U Appendix Troubleshooting 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 The TV sometimes makes a cracking sound. Possible Solution Check if you pressed POWER on the remote control unit. If the indicator on the TV does not light up, press POWER on the TV. Is the AC cord disconnected? Has the power been turned on? External influences such as lightning, static electricity, may cause improper operation. In this case, operate the unit after first turning off the power of the TV or unplugging the AC cord and replugging it in after 1 or 2 minutes. Are batteries inserted with polarity ( , ) aligned? Are batteries worn out? (Replace with new batteries.) Are you using it under strong or fluorescent lighting? Is a fluorescent light illuminated near the remote control sensor? Is the image position correct? Are screen mode adjustments such as picture size made correctly? Adjust the picture tone. Is the room too bright? The picture may look dark in a room that is too bright. Check the input signal setting. Is the sleep timer set? Check the power control settings. The unit's internal temperature has increased. Remove any objects blocking vent or clean. Is connection to other components correct? Is correct input signal source selected after connection? Is the correct input selected? Is picture adjustment correct? Is "On" selected in "Audio Only"? Is a non-compatible signal being input? Is the volume too low? Is "Variable" selected in "Output Select"? Have you pressed MUTE on the remote control unit? This is not a malfunction. This happens when the cabinet slightly expands and contracts according to change in temperature. This does not affect the TV's performance. Troubleshooting-Digital Broadcasting The error message about reception of broadcast The example of an error message displayed on a screen Failed to receive broadcast. No broadcast now. Error code E202 E203 Possible Solution Check the antenna cable. Check that the antenna is correctly setup. Check the broadcast time in the program guide. 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 Liquid Crystal panel to malfunction. Storage temperature: 4°F to 140°F ( 20°C to 60°C) 2 - 4