Optoma H56 User Manual - Page 27

English Appendices Troubleshooting If you are experiencing trouble with the projector, refer to the following. If the problem persists, please contact your local reseller or service center. Problem : No image appears on screen. 4 Ensure all the cables and power connections are correctly and securely connected as described in the “Installation” section. 4 Ensure the pins of connectors are not crooked or broken. 4 Check if the projection lamp has been securely installed. Please refer to the “Changing the lamp” section. 4 Make sure you have removed the lens cap and the projector is switched on. Problem : Partial, scrolling or incorrectly displayed image. 4 Press the “Re-Sync” button on the Remote Control or Panel Control. 4 If you use a PC: If the resolution of your computer is higher than 1024 x 768. Follow the steps outlined below to reset the resolution. For Windows 3.x: 1. In the Windows Program Manager, click the “Windows Setup” icon in the Main group. 2. Verify that your display resolution setting is less than or equal to 1024 x 768. For Windows 95,98,2K,XP: 1. Open “My Computer” icon, the “Control Panel” folder, and then double click the “Display” icon. 2. Select the “Setting” tab. 3. In the “Desktop Area” you will find the resolution setting. Verify that the resolution setting is less than or equal to 1024 x 768 resolution. 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. 27