Samsung LC34F791WQMXCH manual Troubleshooting Guide, Testing the Product, Check the following

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Chapter 09

Troubleshooting Guide

Requirements Before Contacting Samsung Customer Service Center

――Before calling Samsung Customer Service Center, test your product as follows. If the problem persists, contact Samsung Customer Service Center.

Testing the Product

Check if your product is operating normally by using the product test function.

If the screen is turned off and the power indicator blinks even though the product is properly connected to a PC, perform a self-diagnosis test.

1Power off both the PC and product.

2Disconnect the cables from the product.

3Power on the product.

4If the message Check Signal Cable appears, the product is working normally.

――If the screen remains blank, check the PC system, video controller and cable.

Checking the Resolution and Frequency

For a mode that exceeds the supported resolution(refer to Standard Signal Mode Table), the message Not Optimum Mode will appear for a short time.

――The displayed resolution may vary, depending on the computer system settings and cables.

Check the following.

Installation issue (PC mode)

The screen keeps switching on and off.

Check the cable connection between the product and PC, and ensure the connectors are locked.

Blank spaces are found on all four sides of the screen when an HDMI or HDMI-DVI cable is connected to the product and PC.

The blank spaces found on the screen have nothing to do with the product.

Blank spaces on the screen are caused by the PC or graphics card. To resolve the problem, adjust the screen size in the HDMI or DVI settings for the graphics card.

If the graphics card settings menu does not have an option to adjust the screen size, update the graphics card driver to the latest version.

(Please contact the graphics card or computer manufacturer for further details about how to adjust the screen settings.)

Screen issue

The power LED is off. The screen will not switch on.

Check that the power cable is connected properly.

The message Check Signal Cable appears.

Check that the cable is properly connected to the product.

Check that the device connected to the product is powered on.

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Contents Curved Monitor Table of contents Adjusting OSD On Screen Display settings Precautions for storage Before Using the ProductSecuring the Installation Space Safety PrecautionsElectricity and Safety CleaningInstallation Operation Page Preparations PartsControl Panel Adjust Volume, Mute Direct Key guideDisplay Function Key Guide IconsDescription Function Key GuideValue decreases in the slider Move the optionExit the Main menu Close Sublist without saving valueChanging Brightness, Contrast and Sharpness settings Changing the Volume settingReverse Side Adjusting the Product Tilt and Height Dedicated to service techniciansConnect to an audio output device such as headphones Stand Precautions for moving the monitorDo not hold the screen when moving or Anti-theft LockRemoving the Stand InstallationAttaching the Wall-mount bracket Wall-mount bracket Align B with100 x 100 3.9 x C34F791WQ 200 x 200 7.9 x Attaching the Stand Pre-connection Checkpoints Connecting and Using a Source DeviceConnecting and Using a PC Connection Using the Hdmi CableConnecting the Power Connection Using an HDMI-DVI CableConnection Using an DP Cable Connecting to HeadphonesStand Neck Left Tidying Up the Connected CablesUtilizing the Product as a USB HUB Connecting a PC to the ProductDriver Installation Setting Optimum ResolutionCorrect posture to use the product Samsung Magic Bright Screen SetupSharpness Adjust the tint of the screenBrightness ContrastHdmi Black Level Eye Saver ModeGame Mode Samsung Magic UpscaleChange the picture size Screen AdjustmentPicture Size Calibration ReportConfiguring the PIP/PBP Settings PIP/PBP ModeEnable or disable the PIP/PBP Mode function Size PositionSound Source Source Select the source for each screenSelect the image size for sub-screen Adjust the contrast level for sub-screen Adjust the contrast level for each screenSet the Picture Size for each of the divided screens Display Time Adjusting OSD On Screen Display settingsTransparency LanguageFreeSync Setup and Reset3440 x 1440 @ 100 Hz Models in the Graphic Cards list supports FreeSyncOff Timer SoundEco Saving Plus Source Detection PC/AV ModeHdmi Mode DisplayPort VerPower LED On Reset AllInformation System Requirements Installing the SoftwareEasy Setting Box Restrictions and Problems with the InstallationCheck that the power cable is connected properly Troubleshooting GuideTesting the Product Checking the Resolution and FrequencyCheck the cable connection to the product Change the Color settingsSet the frequency on your graphics card General Specifications50.000 +/+ Standard Signal Mode Table+/+ 40.000 +/+――Horizontal Frequency 60.000Not a product defect Responsibility for the Pay Service Cost to CustomersProduct damage caused by customers fault Appendix
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LC34F791WQMXCH, LC34F791WQMXUE, LC34F791WQEXXV, LC34F791WQIXCI, LC34F791WQUXEN specifications

The Samsung LC34F791WQIXCI and LC34F791WQUXEN are innovative and powerful curved monitors designed to enhance both productivity and entertainment experiences. These models are part of Samsung’s commitment to providing cutting-edge display technology that meets the demands of modern users.

One of the standout features of these monitors is their impressive 34-inch Ultra-Wide Quad HD resolution, boasting 3440 x 1440 pixels. This allows for a wider field of view and greater detail, making it ideal for multitasking, gaming, and professional applications. With an 178-degree viewing angle, users can enjoy consistent picture quality from various positions, which is particularly beneficial in collaborative environments.

The curved design of the Samsung LC34F791 series enhances immersion by wrapping the screen around the viewer’s natural field of vision. This curvature, combined with Samsung's Quantum Dot technology, provides vibrant colors and high brightness, enabling rich visual experiences that are both engaging and enjoyable. The monitors cover 125% of the sRGB color spectrum, ensuring that images appear true to life and full of detail.

Another key technological advancement is the VA panel used in these monitors. VA panels are known for their deep blacks and high contrast ratios, which means users can expect exceptional performance when watching movies or playing games in dark settings. The contrast ratio of 3000:1 enhances the viewing experience, making images pop with depth and clarity.

The Samsung LC34F791 models also feature Picture-by-Picture (PBP) mode, which allows users to connect two different devices and view them simultaneously without losing image quality. This feature is particularly advantageous for professionals who need to reference multiple sources or for gamers who wish to stream while playing.

In terms of connectivity, these monitors offer multiple HDMI inputs, a DisplayPort, and USB ports, providing flexibility for various devices. The built-in speakers add convenience, eliminating the need for external audio solutions in certain setups.

Overall, the Samsung LC34F791WQIXCI and LC34F791WQUXEN monitors blend cutting-edge technology with sleek design, making them ideal for both gaming enthusiasts and professionals seeking a versatile display solution. Their impressive features, including ultra-wide resolution, brilliant colors, and innovative design, set them apart in the competitive landscape of computer monitors.
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