Samsung LC34F791WQUXEN manual Check the cable connection to the product, Change the Color settings

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Not Optimum Mode is displayed.

This message appears when 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 (P.43).

The images on the screen look distorted.

Check the cable connection to the product.

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.

The screen appears unstable and shaky. There are shadows or ghost images left on the screen.

Check that the resolution and frequency for the PC are within the range of resolution and frequency compatible with the product. Next, if required, change the settings, referring to Standard Signal Mode Table (P.43) in this manual and the Information menu on the product.

The screen is too bright. The screen is too dark.

Adjust Brightness and Contrast.

Screen color is inconsistent.

Change the Color settings.

The colors on the screen have a shadow and are distorted.

Change the Color settings.

White does not really look white.

Change the Color settings.

There is no image on the screen and the power LED blinks every 0.5 to 1 second.

The product is operating in power-saving mode.

Press any key on the keyboard or move the mouse to return to normal operating mode.

Text is blurry.

If using a Windows OS (e.g. Windows 7, Windows 8, Windows 8.1 or Windows 10): Go to Control Panel → Fonts → Adjust ClearType text and change Turn on ClearType.

Video playback is choppy.

Playback of high-definition large video files can be choppy. This may be because the video player is not optimized for the computer resource.

Try playing the file on another video player.

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.

Video is available but there is no sound.

Sound cannot be heard if a HDMI-DVI cable is used to connect the input device. Connect the device using an HDMI cable or a DP cable.

Source device issue

A beeping sound is heard when my PC is booting.

If a beeping sound is heard when your PC is booting, have your PC serviced.

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Contents Curved Monitor Table of contents Adjusting OSD On Screen Display settings Before Using the Product Securing the Installation SpaceSafety Precautions Precautions for storageCleaning Electricity and SafetyInstallation Operation Page Parts PreparationsControl Panel Direct Key guide Adjust Volume, MuteDisplay Function Key Guide Function Key Guide IconsDescriptionMove the option Exit the Main menuClose Sublist without saving value Value decreases in the sliderChanging the Volume setting Changing Brightness, Contrast and Sharpness settingsDedicated to service technicians Reverse Side Adjusting the Product Tilt and HeightConnect to an audio output device such as headphones Precautions for moving the monitor Do not hold the screen when moving orAnti-theft Lock StandInstallation Removing the StandWall-mount bracket Align B with Attaching the Wall-mount bracket100 x 100 3.9 x C34F791WQ 200 x 200 7.9 x Attaching the Stand Connecting and Using a Source Device Connecting and Using a PCConnection Using the Hdmi Cable Pre-connection CheckpointsConnection Using an HDMI-DVI Cable Connection Using an DP CableConnecting to Headphones Connecting the PowerTidying Up the Connected Cables Stand Neck LeftConnecting a PC to the Product Utilizing the Product as a USB HUBSetting Optimum Resolution Driver InstallationCorrect posture to use the product Screen Setup Samsung Magic BrightAdjust the tint of the screen BrightnessContrast SharpnessEye Saver Mode Game ModeSamsung Magic Upscale Hdmi Black LevelScreen Adjustment Picture SizeCalibration Report Change the picture sizePIP/PBP Mode Configuring the PIP/PBP SettingsEnable or disable the PIP/PBP Mode function Position SizeSound Source Select the source for each screen SourceSelect the image size for sub-screen Adjust the contrast level for each screen Adjust the contrast level for sub-screenSet the Picture Size for each of the divided screens Adjusting OSD On Screen Display settings TransparencyLanguage Display TimeSetup and Reset FreeSyncModels in the Graphic Cards list supports FreeSync 3440 x 1440 @ 100 HzSound Off TimerEco Saving Plus PC/AV Mode Hdmi ModeDisplayPort Ver Source Detection Reset All Power LED On Information Installing the Software Easy Setting BoxRestrictions and Problems with the Installation System RequirementsTroubleshooting Guide Testing the ProductChecking the Resolution and Frequency Check that the power cable is connected properlyChange the Color settings Check the cable connection to the productSet the frequency on your graphics card Specifications GeneralStandard Signal Mode Table +/+40.000 +/+ 50.000 +/+60.000 ――Horizontal FrequencyResponsibility for the Pay Service Cost to Customers Product damage caused by customers faultAppendix Not a product defect
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