Troubleshooting - LG 34UC79G Owner's Manual

TROUBLESHOOTING

Nothing-is-displayed-on-the-screen.
Is the monitor's power cord plugged in?
Is the power LED on?
Is the power on and the power LED
displaying white?
Is the power LED blinking?
Is the OUT-OF-RANGE message being
displayed?
Is the No-Signal message being
displayed?
The screen may not be displayed
properly when configuring DisplayPort
1.2 in a Mac product.
The-OSD-lock-message-is-being-displayed.
Are some functions not available when
you press the Menu button?
The-screen-retains-an-image.
Does image sticking occur even when
the monitor is turned off?
Screen-display-is-unstable-and-shaky-/-Images-displayed-on-the-monitor-leave-shadow-trails.
Did you select the appropriate
resolution?
NOTE
Vertical-frequency In order to display an image, the screen must be refreshed dozens of times per second, like a fluorescent
y
lamp. The number of times the screen is refreshed per second is called vertical frequency, or refresh rate, and is represented by
Hz.
Horizontal-frequency The time it takes to display one horizontal line is called the horizontal cycle. If 1 is divided by the
y
horizontal interval, the result is the number of horizontal lines displayed per second. This is called horizontal frequency and is
represented by kHz.
Check if the power cord is correctly plugged into the power outlet.
y y
Check the power cable connection and press the power button.
y y
Check that the connected input is enabled (Menu->-Input).
y y
If the monitor is in sleep mode, move the mouse, or press any key on the
y y
keyboard, to switch the display on.
Check if the computer is turned on.
y y
This occurs when signals transferred from the PC (graphics card) are out
y y
of the horizontal or vertical frequency range of the monitor. Please see
the Product Specification section of this manual to set the appropriate
frequency.
This is displayed when the signal cable between the PC and the monitor is
y y
missing or disconnected. Check the cable and reconnect it.
DisplayPort 1.2 may not be supported depending upon the Mac product.
y y
Please contact the manufacturer.
The OSD is locked. Go to Menu > General and set OSD-Lock to-Off.
y y
Displaying a still image for a prolonged time may cause damage to the
y y
screen, resulting in the retention of the image.
To extend the lifetime of the monitor, use a screensaver.
y y
If the selected resolution is HDMI 1080i 60/50 Hz (interlaced), the screen
y y
may be flickering. Change the resolution to 1080P or the recommended
resolution.
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