Sharp AQUOS LC-42D64U, Service Manual

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LC-42/46/52D64U
2 – 4
Troubleshooting
Possible Solution
Is the volume too low?
Is "Variable" selected in "Output Select"?
Have you pressed
MUTE
on the remote control unit?
Cautions regarding use in high and low temperature environments
Appendix
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
Check if you pressed
TV 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 in-influences such as lightning, static electricity, may cause improper operation.
In this case, operate the unit after first turning on the power of the TV or unplugging
the AC cord and replugging it in after 1 or 2 minutes.
Is the
FUNCTION
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?
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?
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)
Troubleshooting-Digital broadcasting
The error message about reception of broadcast
Failed to receive broadcast.
E203
Check the broadcast time in the program guide.
The example of an error message
displayed on a screen
No broadcast now.
Error code
E202
Possible Solution
Check the antenna cable. Check that the antenna is correctly
setup.
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.
The TV sometimes makes a
cracking sound.
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