Samsung LS27A850DSSCI, LS27A850DS/XJ, LS27A850DSR/EN, LS27A850DS/EN Not Optimum Mode is displayed

8Troubleshooting Guide

Screen issue
Not Optimum Mode is displayed.	This message appears if the signal from the
	graphics card exceeds the maximum resolution or
	frequency for the product.
	Change the maximum resolution and frequency to
	suit the product performance, referring to
	Standard Signal Mode Table (79page).
The images on the screen look distorted.	Check the cable connection to the product (Refer
	to "2.2 Connecting and Using a PC")
The screen is not clear. The screen is blurry.	Remove any accessories (video extension cable,
	etc) and try again.
	Set the resolution and frequency to the
	recommended level. (Refer to "9.1 General")
The screen appears unstable and shaky.	Check that the resolution and frequency for the
	PC are within the range of resolution and
There are shadows or ghost images left on the
	frequency compatible with the product, and if
screen.
	required, change the settings, referring to
	Standard Signal Mode Table (79page) in this
	manual and the INFORMATION menu on the
	product.
The screen is too bright. The screen is too dark.	Adjust Brightness(40page) and Contrast(41page).
Screen color is inconsistent.	Change the COLOR settings.
	(Refer to "Configuring Tint")
The colors on the screen have a shadow and are	Change the COLOR settings.
distorted.	(Refer to "Configuring Tint")
White does not really look white.	Change the COLOR settings.
	(Refer to "Configuring Tint")
There is no image on the screen and the power	The product is in power-saving mode.
LED blinks every 0.5 to 1 second.
	Press any key on the keyboard or move the
	mouse to return to the previous screen.
Sound issue
There is no sound.	Check the connection of the audio cable or adjust
	the volume.
	Check the volume.
The volume is too low.	Adjust the volume.
	If the volume is still low after turning it up to the
	maximum level, adjust the volume on your PC
	sound card or software program.

8 Troubleshooting Guide 73