Samsung LS24A450DWT/EN, LS22A450DWT/EN Before Requesting Service, Image is TOO Light or TOO Dark

5-2 Before Requesting Service

Please check the following before requesting After-Sales service. If the problem continues, please contact your nearest Samsung Electronics Service Center.

A blank screen appears / I cannot turn the product on

Is the power cord connected properly?	Check the connection status of the power cord.
	(Connected using the D-sub cable)
	Check the cable connecting the PC and the product.
Is the <Check Signal Cable> message displayed on the	(Connected using the DP cable)
screen?	If the message appears on the screen even if the cable is
	properly connected, recheck the input signal by pressing the [
	] button of the product.
	This occurs when the signal from the graphics card exceeds
Is the <Not Optimum Mode> message displayed on the	the maximum resolution or the maximum frequency of the
	product.
screen?
	In this case, set up the appropriate resolution and the fre-
	quency for the product.
	1. This occurs when the power saving function is running.
	If you click the mouse or press any key, the screen will be
Is a blank screen displayed and does the power LED blink at	turned on.
a 1 second interval?	2. If the "Check Signal Cable" condition persists for more than
	five minutes, Lossless mode will be activated.In Lossless
	mode, the backlight of the monitor will turn off.
	If you connect the DP cable when the PC has booted up or if
	you reconnect the DP cable after disconnecting the cable
Did you connect with a DP cable?	while using a PC, the screen may not be displayed because
	some graphics cards do not output the video signal.
	In this case, reboot the PC while the DP cable is connected.

THE IMAGE IS TOO LIGHT OR TOO DARK.

Adjust the <Brightness> and <Contrast>. (Refer to the <Brightness>, <Contrast>)

The display brightness can differ according to the mode set for <			Angle>.
If <	Bright> is set to <Dynamic Contrast>, the display brightness can differ according to the input signal.
	The on screen adjustment menu (OSD) does not appear.
Did you cancel the screen adjustment?		Check if the OSD Adjustment Lock function is set to Off.
	The color is weird / The picture is displayed in black and white
Is the entire screen displayed in the same color as if viewing		Check the cable connection to the computer.
the screen through a cellophane paper?		Reinsert the graphics card into the computer completely.
Is the graphics card configured correctly?		Set up the graphics card referring to the user manual.
	The display area suddenly moves to an edge or to the center.
Did you change the graphics card or the driver?		Please press the [AUTO] button to run the auto adjustment
		function.

5-2 Troubleshooting