Troubleshooting
No Image is Displayed
●Is the product power cord connected?
●Is the power indicator light on?
●Power is on, power indicator is blue but the screen appears extremely dark.
●The power indicator amber?
●Does the 'Out of range' message appear?
●Does the 'Check signal cable' message appear?
•See if the power cord is properly connected to the outlet.
•See if the power switch is turned on.
•May need service.
•Adjust brightness and contrast again.
•Backlight may need repair.
•If the product is in power saving mode, move the mouse or press any key.
•Turn both devices off and then back on.
•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.
* Maximum resolution
RGB : 1920 x 1080 @ 60 Hz
HDMI/DVI : 1920 x 1080 @ 60 Hz
•The signal cable between PC and product is not connected. Check the signal cable.
•Press the 'INPUT' menu in the remote Control to check the input signal.
'Unknown Product' Message Appears When the Product is Connected.
●Did you install the driver?
•Install the product driver provided with the product, or download it from http://www.lg.com
•See if the plug & play function is supported by referring to your video card user manual.
'Key Lock On' Message Appears.
●The 'Key Lock On' message appears when pressing the Menu button.
•The control locking function prevents unintentional OSD setting change due to careless usage. To unlock the controls, simultaneously press Menu and 
for several seconds. (You cannot set this function using the remote control buttons. You can only set this function with the controls on the product.)
Note
*Vertical frequency: To enable normal viewing, the screen image should be changed tens of times every second like a fluorescent lamp. The vertical frequency or refresh rate is the number of times an image is display per second. The unit is Hz.
*Horizontal frequency: The horizontal interval is the time it takes to display one vertical line. When 1 is divided by the horizontal interval, the number of horizontal lines displayed every second can be tabulated as the horizontal frequency. The unit is kHz.
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