Barco MGD 521 MKII user manual Troubleshooting, There appears no image, the green LED is on

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6. TROUBLESHOOTING

There appears no image on the picture tube, the green LED at the front is out

•Check if the power cord is properly connected to the power outlet and to the display.

•Check if the power button is switched on.

There appears no image, the green LED is on

The display is switched in Stand-by, manually or by the automatic Power saving system.

•Press the control knob at the rear shortly.

•Try to switch on the display by pressing any key on the keyboard of the computer that produces the video and sync. signals for the display.

•Check if both horizontal and vertical sync. signals are connected to the display and to the computer.

On the picture tube appears the message "No Valid Sync Signal"

•Check if both horizontal and vertical sync. signals are connected to the display and to the computer.

•Check if the sync. signals are connected in the proper way (refer to the chapter "Installation").

•Check if both horizontal and vertical sync. frequencies match the display specifications (refer to the chapter "Technical specifications").

For other problems, please consult your technical service department.

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Contents V599326/Rev June MGD 521 MkiiTrademark information MGD 521 M Mkii Users Guide Safety Instructions MGD 521 M Mkii Users Guide Contents MGD 521 M Mkii Users Guide Overview IntroductionVersions and options Power saving systemAbout the manuals Installation PrecautionsPackage contents Controls and connectors Connection of video signals Signal connectionConnection of optical sensor Connection of data signalsPositioning the display Connection of powerImportant considerations Power on/off Switching on / offAutomatic power saving system Dpms Operation User ControlsContrast and brightness control To activate the OSDTo put contrast in calibrated position To control contrast manually To put brightness in calibrated positionTo control brightness manually Viewing Status information To view the status informationExplanation of the Status information menu items Activity timeout Other adjustmentsAdvanced Settings and Adjustments For Service Staff only SettingsTo change the settings Saving the settings Explanation of the Settings menu itemsHow to make the adjustments AdjustmentsDescription of the adjustments Geometry RotationAdvanced Interlacing Post correction Interlacing Pre correctionSH Compensation optional SH Compensation SH Compensation ON/OFFSH Compensation SH Position Advanced Advanced Focus Static focus To adjust the ALC system, proceed as followsFocus zone ALC optionalHow to save changes Proceed as follows Factory resetLuminance uniformity What happens upon saving?Maintenance Picture tubeCabinet There appears no image, the green LED is on TroubleshootingLuminance Uniformity Correction Appendix a Background InformationPage Picture tube Appendix B Technical Specifications