LG 27EA83R-D - Manual (Page 20)

20
ENG
ENGLISH
TROUBLESHOOTING
TROUBLESHOOTING
Nothing is displayed on the screen.
Is the monitor's power cord plugged
in?
y Check if the power cord is correctly plugged in to the power outlet.
Is the power indicator on? y Check the power cable connection and press the power button.
Is the power indicator displaying
red?
y Check that the connected input is enabled (Menu - Input).
Is the power indicator blinking? y If the monitor is in power-saving mode, move the mouse or press any key on
the keyboard to switch the display on.
y Check if the computer is turned on.
Is the "OUT OF RANGE" message
displayed?
y This occurs when signals transferred from the PC (video 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 "CHECK SIGNAL CONNEC-
TION" message is displayed?
y This is displayed when the signal cable between the PC and the monitor is
missing or disconnected. Check the cable and reconnect.
Do you see a "OSD LOCKED" message on the screen?
Do you see “OSD LOCKED” when
you push MENU button?
y You can secure the current control settings, so that they cannot be inadvertently
changed. You can unlock the OSD controls at any time by pushing the MENU
button for several seconds: the message “OSD UNLOCKED” will appear.
The screen retains an image.
Does image sticking occur even
when the monitor is turned off?
y Displaying a still image for a prolonged time may cause damage to the screen,
resulting in the retention of the image.
y Use a screen saver to protect the screen when using the monitor for a pro-
longed period of time.
y 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 repre-
sented by Hz.
y Horizontal Frequency: The time it takes to display one horizontal line is called the horizontal cycle. The number
of horizontal lines displayed in one second can be calculated by dividing one by the horizontal cycle. This is called
horizontal frequency and is represented by kHz.
NOTE
Touch does not work normally.
Touch does not work at all.
y Check whether the USB cable is properly connected to the PC.
(No additional USB touch program installation is required.)
y Check your operating system. The touch function is supported only on Windows 7
and Windows 8.
Multi touch does not work. y Windows 7 Starter, Home basic version are not support multi-touch as default option.
Please check the details on the homepage of the Microsoft.
The image on the screen looks strange. (It works only in analog mode.)
Does the screen area appear un-
centered?
Pressing the AUTO button will automatically optimize the screen to the current
display mode.
Do you see vertical lines on the
screen?
Pressing the AUTO button will automatically optimize the screen to the current
display mode.
Do you see horizontal noise lines
or does text appear blurred on the
screen?
Pressing the AUTO button will automatically optimize the screen to the current
display mode.