Troubleshooting - Sharp LC-20AX7X Operation Manual

Troubleshooting

Before calling for repair services, check the following items for possible remedies to the encountered symptoms.
LCD TV set
Problem
Remote control does not work.
Unit cannot be operated.
Cautions regarding use in high and low temperature environments
• When the unit is used in a low temperature space (e.g. room, offi ce), 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)
32
• Make sure the AC cord is properly inserted in the AC outlet.
• Reception other than those of broadcasting stations can be
considered.
There is neither
• Make sure the input mode is set to the LCD TV set.
picture nor sound.
• Make sure the power switch of the LCD TV set is on.
• Make sure Picture adjustment is properly adjusted.
• The fl uorescent lamp may have reached the end of its service life.
There is no picture.
• Make sure the S-VIDEO terminal has nothing connected.
There is no picture
• Make sure "AUDIO ONLY" is not set to "DISPLAY OFF".
from AV1/2/3.
• Make sure the volume is not set to minimum.
• Make sure the sound is not set to mute.
• Make sure that headphones are not connected.
There is no sound.
• Make sure the antenna cable is properly connected.
• Bad reception can be considered.
There is no picture
or sound, just
noise.
• Make sure the antenna cable is properly connected.
• Bad reception could be the problem.
The picture is not
clear.
• Check colour adjustment.
The picture is too
light or improperly
tinted.
• Check if "BACKLIGHT" is set to "DARK".
• Check "CONTRAST".
• The fl uorescent lamp may have reached the end of its service life.
The picture is too
dark.
• Check if batteries in the remote control have suffi cient power.
• Make sure the remote sensor window is not under strong lighting.
• External infl uences such as lightning, static electricity, etc., may
cause improper operation. In this case, operate the unit after fi rst
turning the power off, or unplugging the AC cord and re-plugging
it in after 1 or 2 minutes.
Check item
Reference
page
5
–
10
10
17
–
7, 9
24
11
11
5
5
–
5
–
17
17
17
–
4
4
–