Troubleshooting - LG 27UD88 Owner's Manual

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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 osD lock message is being displayed.
Are some functions not avail-able 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?
PC(or UsB host device) cannot detect UsB peripheral connected to UsB-A port.
Did you change the OSD Menu
"Quick Charge" off?
note
Vertical frequency In order to display an image, the screen must be refreshed dozens of times per second, like a fluorescent lamp. the
y
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,
y
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
Check the power cable connection and press the power button.
y
Check that the connected input is enabled (Menu > Quick Settings > Input).
y
If the monitor is in sleep mode, move the mouse, or press any key on the
y
keyboard, to switch the display on.
Check if the computer is turned on.
y
this occurs when signals transferred from the PC (graphics card) are out of the
y
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
missing or disconnected. Check the cable and reconnect it.
the OSD is locked. Go to Menu > General and set OSD Lock to Off.
y
Displaying a still image for a prolonged time may cause damage to the screen,
y
resulting in the retention of the image.
to extend the lifetime of the monitor, use a screensaver.
y
If the selected resolution is HDMI 1080i 60/50 Hz (interlaced), the screen may
y
be flickering. Change the resolution to 1080P or the recommended resolution.
When set "Quick Charge" On, device will be charged quickly, but cannot
y
use USB data.
When Set "Quick Charge" Off, device will be charged slowly, and can use
y
USB data.