Sharp LC-42SV32B Service Manual page 10

LC-42SV32B
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.
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)
Information on the Software License for This Product
Software composition
The software included in this product is comprised of various software components whose individual copyrights are held by SHARP or by third parties.
Software developed by SHARP and open source software
The copyrights for the software components and various relevant documents included with this product that were developed or written by SHARP are
owned by SHARP and are protected by the Copyright Act, international treaties, and other relevant laws. This product also makes use of freely
distributed software and software components whose copyrights are held by third parties. These include software components covered by a GNU
General Public License (hereafter GPL), a GNU Lesser General Public License (hereafter LGPL) or other license agreement.
Acknowledgements
The following open source software components are included in this product:
Linux kernel/Modutils/Glibc/Zlib/Libpng
• Check if you pressed (Power) on the remote control unit. If the indicator on the TV does
not light up, press 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 re-plugging it after 1 or 2 minutes.
• Is the SOURCE set correctly? Set it to the TV setting position.
• 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?
• 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.
• Is the sleep timer set?
• The unit's internal temperature has increased. Remove any objects blocking vent.
• Is connection to other components correct?
• Is the correct input selected?
• Is picture adjustment correct?
• Is the volume too low?
• 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
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Possible Solution