Troubleshooting - LG M4720C Owner's Manual

Is the power cord connected?
Is the power indicator light on?
Power is on, power indicator is Blue
but the screen appears extremely dark.
Is the power indicator amber?
Does the 'Out of range' message
appear?
Does the 'Check signal cable'
message appear?
'Unknown Product' message appears when the product is connected.
Did you install the driver?
'Key Lock On' message appears.
The 'Key Lock On' message
appears when pressing the Menu
button.

Troubleshooting

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the outlet.
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mouse or press any key.
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the vertical or horizontal frequency range of the
set. Adjust the frequency range by referring to
the specifications in this manual.
* Maximum Resolution
RGB : 1920 x 1080 @ 60 Hz
HDMI/DVI : 1920 x 1080 @ 60 Hz
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connected. Check the signal cable.
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the input signal.
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with the product, or download it from the web
site. (http://www.lg.com)
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referring to the video card user manual.
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unintentional OSD setting change due to
careless usage. To unlock the controls,
simultaneously press the Menu button and
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this function using the remote control buttons.
You can set this function in the product only.)
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