Optoma Technology EP747 manual Appendices, Troubleshooting

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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 38 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 “Sync” on the remote control or press “Re-Sync” 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 1400 x 1050.

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 1400 x 1050 resolution.

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Contents Table of Contents Precautions Usage NoticeDon’t Product Features IntroductionPackage Overview ControllerProduct Overview Main UnitControl 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 ProjectorPowering Off the Projector Adjusting the Projected Image Adjusting the Projector Image HeightAdjusting the Projector Zoom / Focus Adjusting Projection Image SizeControl Panel & Remote Control User ControlsUsing the Remote Control VGA1 How to Operate On Screen Display MenusMenu Tree Contrast Display ModeBrightness White PeakingColour Temp SaturationSharpness Hor. Position Horizontal Position PhaseFrequency Ver. Position Vertical PositionInput Signal Ver. ShiftColour Adjustment LanguageKeystone Keystone Correction Menu LocationProjection Source LockHigh Altitude ResetVolume TranslucenceProjector ID SecurityAuto Power Off Reset Lamp HoursECO Mode Sleep TimerTroubleshooting AppendicesProblem Image is unstable or flickering Problem Image is reversed Problem Message Reminders Lamp Replacement Procedure Replacing the LampCompatibility Modes Analog DigitalRS232 Commands RS232 Connector VGA-In ConnectorCeiling Mount Installation Optoma Global Office USA