Troubleshooting - LG 23ET83V-W Owner's Manual

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TROUBLESHOOTING

TROUBLESHOOTING
Nothing is displayed on the screen.
Is the monitor's power cord plugged
in?
Is the power indicator on?
Is the power indicator displaying
red?
Is the power indicator blinking?
Is the "OUT OF RANGE" message
displayed?
Is the "CHECK SIGNAL CONNEC-
TION" message is displayed?
Do you see a "OSD LOCKED" message on the screen?
Do you see "OSD LOCKED" when
you push MENU button?
The screen retains an image.
Does image sticking occur even
when the monitor is turned off?
NOTE
Vertical Frequency: In order to display an image, the screen must be refreshed dozens of times per second like a
y
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.
Horizontal Frequency: The time it takes to display one horizontal line is called the horizontal cycle. The number
y
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.
The image on the screen looks strange. (It works only in analog mode.)
Does the screen area appear un-
centered?
Do you see vertical lines on the
screen?
Do you see horizontal noise lines
or does text appear blurred on the
screen?
Touch does not work normally.
Touch does not work at all.
y Check if the power cord is correctly plugged in to the power outlet.
y Check the power cable connection and press the power button.
y Check that the connected input is enabled (Menu - Input).
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.
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.
y This is displayed when the signal cable between the PC and the monitor is
missing or disconnected. Check the cable and reconnect.
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.
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.
Pressing the AUTO button will automatically optimize the screen to the current
display mode.
Pressing the AUTO button will automatically optimize the screen to the current
display mode.
Pressing the AUTO button will automatically optimize the screen to the current
display mode.
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.