Troubleshooting - LG 84WT70PS Owner's Manual

TROUBLESHOOTING

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Problem
Is the product power cord
connected?
Is the power indicator light on?
Power is on, power indicator
is red but the screen appears
extremely dark.
Does the 'Out of range'
message appear?
Does the 'Check signal cable'
message appear?
'Unknown Product' message appears when the product is connected.
Problem
Did you install the driver?
'Key Lock On' message appears.
Problem
The Key Lock On message
appears when pressing the
SETTINGS button.
y See if the power cord is properly connected to the outlet.
y See if the power switch is turned on.
y May need service.
y Adjust brightness and contrast again.
y Backlight may need repair.
y The signal from the PC (video card) is out of the vertical or horizontal
frequency range of the product. Adjust the frequency range by
referring to the Specifications in this manual.
y The signal cable between PC and product is not connected. Check
the signal cable.
y Press the INPUT menu in the remote Control to check the input signal.
y See if the plug&play function is supported by referring to the video
card user manual.
y The Lock function prevents the OSD settings from being changed
inadvertently. To release the lock, go to Menu and Option and disable
the Key Lock option.
TROUBLESHOOTING
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