Mitsubishi Electronics MDT321S user manual Troubleshooting

Page 33

Troubleshooting

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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, MITSUBISHI ELECTRIC 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 MITSUBISHI ELECTRIC 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.

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 enable and the power to the LCD monitor is turned off if the power supply is interrupted unexpectedly, then the “OFF TIMER” will be reset.

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 USER’S Manual Manuel Utilisateur Manual DEL Usuario English-9 IndexImportant Information Declaration Declaration of the ManufacturerEnglish-2 Recommended Use Safety Precautions, Maintenance & Recommended UseErgonomics English-3Contents Control Panel Parts Name and FunctionsTerminal Panel Wireless Remote Control Operating Range for the Remote Control Handling the remote controlEnglish-8 Setup Procedure When the monitor is installed in the portrait position Recommended AdjustmentInstalling and removing stand When using external speakersHow to Mount and Attach Options to the LCD Monitor Connections Wiring DiagramBefore making connections English-12Connecting a Personal Computer Connect the LCD Monitor to a Personal ComputerEnglish-13 Connecting with Digital Interface Equipment Connect the LCD Monitor to a Computer with a Digital OutputEnglish-14 Connecting a DVD Player with component out Connect the LCD Monitor to a DVD PlayerEnglish-15 Connecting to a Stereo Amplifier Connect the LCD Monitor to a Stereo AmplifierEnglish-16 Pressing the power button Power on and OFF ModesUsing the remote control Pressing the Main Power Switch Basic OperationUsing Power Management Power IndicatorPicture Mode Information OSDRemote Control OSD On-Screen-Display ControlsEnglish-19 Resolution Clock PhaseColor Control ScreenZoom Mode Screen ResetEnglish-21 Auto Setup ConfigurationAuto Adjust Power SaveFactory Reset ResetScreen Saver Color SystemInput Detect OSD PositionMonitor InformationInput Resolution Video ModeScan Mode Film ModeOption Reset Power on DelayTiling Date & TimeImage Sticking of LCD Panel For long life use of Public DisplayRecommendations English-27Controlling the LCD monitor via RS-232C Remote Control ConnectionEnglish-28 Input S-VIDEO English-29English-30 FeaturesTroubleshooting Specifications Product Specifications Analog Input Digital InputEnglish-32 Pin Assignment of DVI connector Pin AssignmentEnglish-33 Mitsubishi Contact Information North AmericaEurope