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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 sound
• 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 in- f luences 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 "RC Control Lock" selected in "Operation Lock Out"?
• 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.
• 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 the volume too low?
• Is "Variable" selected in "Output Select"?
• Have you pressed MUTE on the remote control unit?
• Check the audio output of the connected external equipment. Is the volume too low
or muted?
• When external equipment is connected via an HDMI cable, you may need to
configure the audio to be output through the HDMI cable.
• When audio is not output from external equipment connected to the INPUT 4 or
INPUT 6 terminal, check the "PC Audio Select" setting.
• Even when external equipment is connected using an HDMI-certified cable, an audio
cable connection may be required depending on the type of equipment and the
media being played back. In this case, in addition to connecting an HDMI-certified
cable to the INPUT 6 (HDMI) terminal, connect a ø 3.5 mm stereo minijack cable to
the AUDIO terminal and set "PC Audio Select" to "INPUT6 (HDMI)".
• When connecting a PC via an HDMI-certified cable, check the following:
- Is the audio output of the PC configured correctly? Check the audio output
settings and output audio format in Sound Properties on the PC.
Only PCM format audio can be output. Compressed audio (with a sampling rate of
32kHz, 44.1kHz, or 48kHz) and DTS format audio cannot be output.
- Depending on the board, only video signals may be output. In this case, in addition
to connecting an HDMI-certified cable to the INPUT 6 (HDMI) terminal, connect a
ø 3.5 mm stereo minijack cable to the AUDIO terminal and set "PC Audio Select"
to "INPUT6 (HDMI)".
• If you are using a DVI-HDMI conversion cable to connect external equipment to the
TV, check the following:
- Is an audio cable connected? The DVI-HDMI conversion cable is for video only.
Connect a ø 3.5 mm stereo minijack cable to listen to the audio.
- Is INPUT 6 being used? When the TV is connected to another HDMI terminal, the
audio and video are not output together even if a ø 3.5 mm stereo minijack cable
is connected to the shared AUDIO terminal for INPUT 4 and INPUT 6.
- Is "INPUT4 (PC)" selected in "PC Audio Select"?
2 – 7
Possible Solution
LC-40D68UT
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