Read Sharp LC-20B2EA (serv.man24) User Guide / Operation Manual online
47
Troubleshooting
Before calling for repair services, make the following checks for possible remedies to the symptoms
encountered.
encountered.
LCD TV set
Problem
Check item
• Make sure the AC adapter is properly inserted in the
power outlet.
• Reception other than that of broadcasting stations could
be the problem.
• Make sure the input mode is set to TV.
• Make sure the main power switch of the main unit is on.
• Make sure the main power switch of the main unit is on.
• Make sure Picture adjustment is properly adjusted.
• The fluorescent lamp may have reached the end of its
• The fluorescent lamp may have reached the end of its
service life.
• Make sure the S-Video terminal has nothing connected.
• Make sure the volume is not set to minimum.
• Make sure the sound is not set to mute.
• Make sure the headphones are not connected.
• Make sure the sound is not set to mute.
• Make sure the headphones are not connected.
• Make sure the antenna cable is properly connected.
• Bad reception could be the problem.
• Bad reception could be the problem.
• Make sure the antenna cable is properly connected.
• Bad reception could be the problem.
• Bad reception could be the problem.
• Check the colour adjustment.
(NTSC mode)
• Check if “Brightness” is set to “dark”.
• Check “Contrast” and “Black level”.
• The fluorescent lamp may have reached the end of its
• Check “Contrast” and “Black level”.
• The fluorescent lamp may have reached the end of its
service life.
• Check if batteries in the remote control have sufficient
power.
• Make sure the remote sensor window is not under
strong lighting.
Reference
page
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45
13
13
10
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6
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15
27
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15
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5
5
Picture
There is no
picture or sound.
picture or sound.
There is no
picture.
There is no
picture from AV-
IN 2.
picture.
There is no
picture from AV-
IN 2.
There is no
sound.
sound.
Picture is not
clear.
clear.
Picture is too
light or
improperly
tinted.
light or
improperly
tinted.
The picture is
too dark.
too dark.
Remote control does not work.
There is no
picture or sound,
just noise.
picture or sound,
just noise.
Sound
Picture
48
Problem
Check item
• The reception may be weak.
• The quality of the broadcast may also be bad.
• Make sure the antenna is facing the correct direction.
• Make sure the outside antenna has not been disconnected.
• The quality of the broadcast may also be bad.
• Make sure the antenna is facing the correct direction.
• Make sure the outside antenna has not been disconnected.
• Make sure the antenna is facing the correct direction.
• Broadcast waves may be reflected from adjacent mountains or
• Broadcast waves may be reflected from adjacent mountains or
buildings.
• There may be interference from automobiles, trains, high-voltage
lines, neon lights, etc.
• There may be interference between the antenna cable and power
cable. Try positioning them further apart.
• Is the unit receiving interference from other devices?
Transmission antennas of radio broadcasting stations and
transmission antennas of amateur radios and cellular phones may
also cause interference.
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.
The picture is
not sharp.
not sharp.
The picture has
ghosts.
ghosts.
There are
stripes on the
screen or
colours fade.
stripes on the
screen or
colours fade.
The picture
shakes.
shakes.
The picture is
spotted.
spotted.
Antenna
Troubleshooting (Continued)
■ Use in hot and cold rooms (locations)
• When the unit is used in rooms (locations) with low temperature, 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 LCD panel to malfunction.
(Storage temperature: –20˚C to +60˚C)
(Storage temperature: –20˚C to +60˚C)
Display
