Troubleshooting - LG 55LV75A Owner's Manual

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TROUBLESHOOTING

TROUBLESHOOTING
No image is displayed.
Problem
Is the product power cord
connected?
Power is on, but the screen
appears extremely dark.
Does the 'Invalid Format'
message appear?
Does the 'No signal' message
appear?
'Unknown Product' message appears when the product is connected.
Problem
Did you install the driver?
The screen image looks abnormal.
Problem
Is the screen position wrong?
Do thin lines appear on the
background screen?
Horizontal noise appears or the
characters look blurred.
The screen is displayed
abnormally.
y See if the power cord is properly connected to the outlet.
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 D-Sub analog signal - Press the "AUTO" button in the remote control
to automatically select the optimal screen status that fits into the
current mode. If adjustment is not satisfactory, select [PICTURE] -
[Screen] - [Position] in OSD menu.
y See if the video card resolution and frequency are supported by the
product. If the frequency is out of range, set to the recommended
resolution in the Control Panel "Display" Setting menu.
y D-Sub analog signal - Press the "AUTO" button in the remote control
to automatically select an optimal screen status that fits into the
current mode. If adjustment is not satisfactory, select [PICTURE] -
[Screen] - [Size] in OSD menu.
y D-Sub analog signal - Press the "AUTO" button in the remote control
to automatically select an optimal screen status that fits into the
current mode. If adjustment is not satisfactory, select [PICTURE] -
[Screen] - [Phase] in OSD menu.
y The proper input signal is not connected to the signal port. Connect
the signal cable that matches with the source input signal.
Resolution
Resolution
Resolution