LG 34UM67-P User Manual download pdf (Page 30)

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TROUBLESHOOTING

Nothing is displayed on the screen.

Is the monitor's power cord plugged

in?

Check if the power cord is correctly plugged into the power outlet.

Is the power LED on?

Check the power cable connection and press the power button.

Is the power on and the power LED

displaying white?

Check that the connected input is enabled (Menu > Quick Settings

> Input).

Is the power LED blinking?

If the monitor is in sleep mode, move the mouse, or press any key

on the keyboard, to switch the display on.

Check if the computer is turned on.

Is the OUT OF RANGE message

being displayed?

This occurs when signals transferred from the PC (graphics card)

are out of the horizontal or vertical frequency range of the monitor.

Please see the Product Specification section of this manual to set

the appropriate frequency.

Is the No Signal message being

displayed?

This is displayed when the signal cable between the PC and

the monitor is missing or disconnected. Check the cable and

reconnect it.

The OSD lock message is being displayed.

Are some functions not avail-able

when you press the Menu button?

The OSD is locked. Go to Menu > General and set OSD Lock to

Off.

The screen retains an image.

Does image sticking occur even

when the monitor is turned off?

Displaying a still image for a prolonged time may cause damage to

the screen, resulting in the retention of the image.

To extend the lifetime of the monitor, use a screensaver.

Screen display is unstable and shaky / Images displayed on the monitor leave shadow trails.

Did you select the appropriate

resolution?

If the selected resolution is HDMI 1080i 60/50 Hz (interlaced), the

screen may be flickering. Change the resolution to 1080P or the

recommended resolution.

NOTE

Vertical frequency

In order to display an image, the screen must be refreshed dozens of times per second, like a

fluorescent 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 horizontal interval, the result is the number of horizontal lines displayed per second. This is called horizontal

frequency and is represented by kHz.

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LG 34UM67-P User Manual Page 30

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