LG 29LN450W - Manual (Page 54)

ENGLISH
53
TROUBLESHOOTING
TROUBLE SHOOTING
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
CONNECTION" 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.
The "OSD LOCKED" message is displayed.
Are some functions unavailable
when pressing the Menu button?
y The OSD is locked. Go to Menu > Settings and set "OSD Lock" to
Unlock.
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
prolonged period of time.
y 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 represented by Hz.
y 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 hori-
zontal cycle. This is called horizontal frequency and is represented by kHz.
NOTE
y y Check if the video card's resolution or frequency is within the range allowed by the monitor and set to
the recommended (optimal) resolution in Control Panel > Display > Settings.
y y Failing to set the video card to the recommended (optimal) resolution may result in blurred text, a
dimmed screen, a truncated display area or misalignment of the display.
y y The configuration procedure may differ depending on your computer and/or operating system. Also,
some video cards may not support certain resolutions. If this is the case, contact the manufacturer of
the computer or video card for assistance.
y y Some video cards may not support the 2560x1080 resolution.
If the resolution cannot be displayed, contact the manufacturer of your video card.
NOTE
The display color is abnormal.
Does the display appear discolored
(16 color)?
y Set the color to 24 bit (true color) or higher. In Windows, go to Control
Panel > Display > Settings > Color Quality.
Does the display color appear
unstable or in monochrome?
y Check if the signal cable is connected properly. Reconnect the cable
or reinsert the PC's video card.
Are there spots on the screen? y When using the monitor, pixilated spots (red, green, blue, white or
black) may appear on the screen. This is normal for the LCD screen.
It is not an error nor is it related to the monitor's performance.