Optoma Technology TX780 appendix Appendices, Troubleshooting, Problem No image appears on screen

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Appendices

Troubleshooting

If you experience trouble with the projector, refer to the follow- ing information. If the problem persists, please contact your local reseller or service center, see page 45 for details.

Problem: No image appears on screen

Ensure all the cables and power connections are correctly and securely connected as described in the “Installation” section.

Ensure the pins of connectors are not crooked or broken.

Check if the projection lamp has been securely installed. Please refer to the “Replacing the lamp” section.

Make sure you have removed the lens cap and the projector is switched on.

Ensure that the “AV Mute” feature is not turned on.

Problem: Left of right edge of the image is missing or the im- age is unstable or noisy

Press “Re-Sync” on the remote control or on control panel.

If you are using a PC: For Windows 3.x:

1.In the Windows Program Manager, double click the “Windows Setup” icon in the Main group.

2.Verify that your display resolution setting is less than or equal to 1600 x 1200.

For Windows 95, 98, 2000, XP:

1.From the “My Computer” icon, open the “Control Panel” folder, and double click the “Display” icon.

2.Select the “Settings” tab.

3.Click on the “Advanced Properties” button.

If the projector is still not projecting the whole image, you will also need to change the monitor display you are using. Refer to the following steps.

4.Verify the resolution setting is less than or equal to 1600 x 1200 resolution.

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Contents Regulation & safety notices Operation conditions Table of Contents Class B emissions limits Safety InformationImportant Safety Instruction Usage NoticePrecautions Don’t Eye Safety Warnings Introduction Product FeaturesDocuments Package OverviewMain Unit Product OverviewControl Panel Connection Ports Remote Control with Mouse Function and Laser Pointer Installation Connecting the ProjectorConnect the Computer/Notebook Connect the Video Powering On/Off the Projector Powering On the ProjectorLens Cap Power/Standby Powering off the projector Adjusting the Projected Image Adjusting the Projector Image HeightTilt Adjusting Foot Elevator Feet Adjusting Projection Image Size Adjusting the Projector Zoom / FocusUser Controls Control Panel & Remote ControlDisplay Volume +Display Mode KeystoneClear Source LockVideo On Screen Display Menus How to OperateMenu Tree Contrast Display ModeImage-I BrightnessColour Temperature SaturationSharpness Image-II Ver. Shift Input SignalColour ColourDVI/VGA Language LanguageManagement RS232 Port VolumeReset PIP Source SwitchSecurity Settings LogoLogo Capture LAN How to use web browser to control your projector Local Area Network LAN Lamp & Power Troubleshooting Problem No image appears on screenAppendices Problem Image is unstable or flickering Problem Image has vertical flickering barProblem Image is out of focus Problem LED lighting message Problem The image is stretched when displaying 169 DVDProblem Image is reversed Problem Lamp burns out or makes a popping soundProblem Message Reminders Replacing the Lamp Lamp Replacement ProcedureAnalog Digital Compatibility ModesRS232 Connector VGA-In Connector RS232 CommandsCeiling Mount Installation USA Optoma Global Offices