NEC LCD4020, LCD5220 user manual Troubleshooting

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Troubleshooting

No picture

•The signal cable should be completely connected to the display card/computer.

•The display card should be completely seated in its slot.

•Front Power Switch and computer power switch should be in the ON position.

•Check to make sure that a supported mode has been selected on the display card or system being used. (Please consult display card or system manual to change graphics mode.)

•Check the monitor and your display card with respect to compatibility and recommended settings.

•Check the signal cable connector for bent or pushed-in pins.

Power Button does not respond

•Unplug the power cord of the monitor from the AC outlet to turn off and reset the monitor.

Image persistence

•Please be aware that LCD Technology may experience a phenomenon known as Image Persistence. Image Persistence occurs when a residual or “ghost” image of a previous image remains visible on the screen. Unlike CRT monitors, LCD monitors’ image persistence is not permanent, but constant images being displayed for a long period of time should be avoided. To alleviate image persistence, turn off the monitor for as long as the previous image was displayed. For example, if an image was on the monitor for one hour and a residual image remains, the monitor should be turned off for one hour to erase the image.

NOTE: As with all personal display devices, NEC DISPLAY SOLUTIONS recommends displaying moving images and using a moving screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.

Image is unstable, unfocused or swimming is apparent

•Signal cable should be completely attached to the computer.

•Use the OSD Image Adjust controls to focus and adjust display by increasing or decreasing the fine adjustment. When the display mode is changed, the OSD Image Adjust settings may need to be re-adjusted.

•Check the monitor and your display card with respect to compatibility and recommended signal timings.

•If your text is garbled, change the video mode to non- interlace and use 60Hz refresh rate.

Image of component signal is greenish

•Check to see if the DVD/HD input connector is selected.

LED on monitor is not lit

(no green or red color can be seen)

•Power Switch should be in the ON position and power cord should be connected.

•Make certain the computer is not in a power-saving mode (touch the keyboard or mouse).

RED LED on monitor is blinking

•A certain failure might have occurred, please contact your nearest authorized NEC DISPLAY SOLUTIONS service facility.

Display image is not sized properly

•Use the OSD Image Adjust controls to increase or decrease the coarse adjustment.

•Check to make sure that a supported mode has been selected on the display card or system being used. (Please consult display card or system manual to change graphics mode.)

Selected resolution is not displayed properly

•Use OSD Display Mode to enter Information menu and confirm that the appropriate resolution has been selected. If not, select corresponding option.

No Sound

•Check to see if speaker cable is properly connected.

•Check to see if mute is activated.

•Check to see if volume is set at minimum.

Remote Control is not available

•Check the Remote Control’s batteries status.

•Check if batteries are inserted correctly.

•Check if the Remote Control is pointing at the monitor’s remote sensor.

•Check the Remote Control Mode status.

•The remote control system may not function when direct sunlight or strong illumination strikes the remote control sensor of the LCD monitor, or when there is an object in the path.

“SCHEDULE”/“OFF TIMER” function is not working properly

•The “SCHEDULE” function will be disabled when the “OFF TIMER” is set.

•If the “OFF TIMER” function is enabled and the power to the LCD monitor is turned off when the power supply is interrupted unexpectedly, then the “OFF TIMER” will be reset.

Snowy Picture, Poor Sound in TV

•Check antenna/cable connection. Use new cable if necessary.

Interference in TV

•Check components for shielding, move away from monitor if necessary.

Inactive area

•There is a 5 mm inactive area between the bezel and the LCD panel. As a result, a gap is visible on the LCD panel between the bezel and the actual picture.

Inactive area

Either light vertical or horizontal stripes may appear, depending on the specific display pattern. This is no product fault or degradation.

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Contents MultiSync LCD4020 MultiSync LCD4620 MultiSync LCD5220 Index Advanced OptionFCC Information Canadian Department of Communications Compliance StatementEnglish-1 Important Information DeclarationDeclaration of the Manufacturer English-2Safety Precautions, Maintenance & Recommended Use Contents Installation Attaching Mounting Accessories Attach Mounting AccessoriesInstalling and removing optional table top stand Ventilation RequirementsPrevent Tipping English-7Parts Name and Functions Control PanelTerminal Panel Wireless Remote Control Operating Range for the Remote Handling the remote controlControl Install the remote control batteries SetupConnect the supplied power cord Switch on the power of all the attached external equipment Adjust the soundAdjust the screen See pages 24 Adjust the image SeeWiring Diagram ConnectionsBefore making connections English-14Connect the LCD Monitor to a Personal Computer Connecting a Personal ComputerEnglish-15 Connect the LCD Monitor to Macintosh Connecting to a Macintosh ComputerEnglish-16 Connect the LCD Monitor to a Computer with a Digital Output Connecting with Digital Interface EquipmentEnglish-17 Connecting a DVD Player with component out Connect the LCD Monitor to a DVD PlayerEnglish-18 RCAConnecting a DVD Player with Hdmi out Connecting a DVD Player with Scart outEnglish-19 ScartConnect the LCD Monitor to a Stereo Amplifier Connecting to a Stereo AmplifierEnglish-20 Power on and OFF Modes Basic OperationLCD4020/LCD4620 LCD5220 English-21Power Indicator Using Power ManagementPicture Mode Selecting a video sourceRemote Control OSD On-Screen-Display ControlsEnglish-23 Control Panel LCD4020/4620 LCD5220 OSD screenSetting English-24English-25 English-26 English-27 English-28 English-29 SRGBConnecting to a TV* For U.S Initial TV SetupParental Controls TV, Video input only English-30Changing the channel Connecting to a TV* For Europe Precautions when connecting the antennaVHF 300-Ohm antenna / UHF antenna English-32Recommendations Image Sticking of LCD PanelEnglish-33 English-34 Set Monitor ID and IR Control modeConnect PC and LCD monitors English-35 Connection English-36Features English-37Troubleshooting Product Specifications Specifications LCD4020English-39 Specifications LCD4620 English-40Specifications LCD5220 English-41Pin Assignment of DVI connector Pin AssignmentEnglish-42 Mini D-SUB 15PManufacturer’s Recycling and Energy Information Disposing of your old NEC productEnergy Saving Weee Mark European Directive 2002/96/EC

LCD5220, LCD4020 specifications

The NEC LCD4020 and LCD5220 are high-performance LCD monitors designed for various professional applications, including broadcasting, medical imaging, and graphic design. Both models are heralded for their exceptional image quality, reliable performance, and advanced technologies, making them popular choices in demanding environments.

The NEC LCD4020 is a 40-inch display that features a native resolution of 1920x1200 pixels, offering a 16:10 aspect ratio. It utilizes advanced TFT-LCD technology, delivering vibrant colors and sharp images with a wide viewing angle. One of the standout features of the LCD4020 is its high brightness level, which typically reaches up to 700cd/m2, ensuring clear visibility even in bright lighting conditions. The monitor supports various input signals, including DVI, HDMI, and VGA, allowing for versatile connectivity options. Additionally, it incorporates NEC's special ColorComp technology, which ensures accuracy in color reproduction, making it ideal for graphic design and color-critical applications.

On the other hand, the NEC LCD5220 boasts a larger 52-inch screen size with a native resolution of 1920x1080, or Full HD. The contrast ratio of this model is impressive, allowing for deeper blacks and more vibrant colors. The LCD5220 is equipped with an advanced backlight system that enhances luminance and color fidelity, essential for professional media work. This display also comes with an integrated video wall capability, enabling multiple LCD5220 units to be combined seamlessly for a larger viewing area, which is highly sought after in command centers and event spaces.

Both models feature NEC's innovative Ambix technology, which allows for simultaneous input from multiple sources without the need for complex setups. This feature is crucial in environments where multiple data streams need to be displayed concurrently. Moreover, they are designed with durability in mind, featuring robust construction that can withstand long hours of operation, making them suitable for 24/7 usage.

In summary, the NEC LCD4020 and LCD5220 are exemplars of high-quality display technology, offering users advanced features, extensive connectivity, and impressive image quality. Whether for medical imaging, broadcast, or graphic design, these monitors provide the reliability and performance professionals need to meet their demanding requirements.
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