Samsung LF18TUSLB3/EN, LF18TUSLBM/EN, LF18TUSLBL/EN manual Before Requesting Service

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.
Is the <Check Signal Cable> message displayed on the	Check the cable connecting the PC and the product.
screen?	If the message appears on the screen even if the cable is
	properly connected, recheck the input signal by pressing the
	/SOURCE button of the product.
Is the <Not Optimum Mode> message displayed on the	This occurs when the signal from the graphics card exceeds
screen?	the maximum resolution or the maximum frequency of the
	product.
	In this case, set up the appropriate resolution and the fre-
	quency for the product.
Is a blank screen displayed and does the power LED blink at	This occurs when the power saving function is running.
a 1 second interval?	If you click the mouse or press any key, the screen will be
	turned on.

THE IMAGE IS TOO LIGHT OT TOO DARK.

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

If <MagicBright> 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 <Key Lock Function> 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.
	Check if the <Color Effect> is set to <Off>.
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.
Did you change the resolution and frequency appropriate to	Set the resolution and the frequency to the appropriate values
the product?	in the graphics card
	Refer to the (Standard Signal Mode Table)
Is the graphics card configured correctly?	Set up the graphics card referring to the user manual.

THE PICTURES ARE OUT-OF-FOCUS.

Did you change the resolution and the frequency appropriate to the product?

Set the resolution and the frequency to the appropriate values in the graphics card

Refer to the (Standard Signal Mode Table)

5-2 Troubleshooting