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23
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 outlet.
Is the power indicator on?
y
Check the power indicator.
Is the power indicator displaying as
red?
y
Adjust the brightness and the contrast.
Is the power indicator blinking?
y
Connect the signal cable to your computer.
y
If the signal cable is connected, make sure that your computer is turned
on.
y
If your computer is in power saving mode, move your mouse or press any
key of your keyboard to return to the normal mode.
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 'No Signal' message displayed?
y
After displaying the "NO SIGNAL" message for 30 seconds, the monitor
will automatically enter power saving mode.
Is the RGB (D-Sub) or DVI cable
completely connected to the monitor?
y
Check if the cable is connecting the monitor and PC correctly.
The "OSD LOCKED" message is displayed.
Is the "OSD LOCKED" message
displayed when the MENU button is
pressed?
y
The OSD lock feature is enabled to prevent undesired modification of the
OSD settings. Press and hold the MENU button for a couple of seconds
to unlock the OSD. (The "OSD UNLOCKED" message will be displayed.)
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 use the monitor for a prolonged period of time.
There is no sound.
Is there no sound even when the
speakers are turned on?
y
Check if the input has an HDMI signal.
y
If the PC and monitor are connected with an HDMI cable, separate audio
settings are required for the PC graphics card.
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
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
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