◗Only part of the computer image is displayed.

If the computer’s output resolution setting is higher than 800 ⋅ 600 (PowerLite 5500C) or 1024 ⋅ 768 (PowerLite 7500C), the projector resizes the image. If the computer output is not compatible with this resizing, choose a different display setting on the computer.

In Windows 3.x, use Windows Setup in the Main program group. In Windows 95/98, right-click on the desktop, select Properties, click the Settings tab, and use the dialog box to select the resolution you want.

For a Macintosh with Mac OS 8.0 or lower, choose Control Panels under the Apple menu and then choose Monitors. In the Monitors screen, choose Options and make sure Macintosh Hi-Res Display or another 1024 ⋅ 768 display is selected. For a Macintosh with Mac OS 8.1 or above, choose Control Panels under the Apple menu and then choose Monitors & Sound. In the Monitors & Sound screen, select a resolution from the Resolution box. For supported display settings, see “Supported Computers and Monitor Displays” on page 130.

You also may need to modify existing presentation files if you created them for a different resolution. See your software manual for specific information.

◗The message NO SIGNAL is displayed.

An image source not connected to the projector is selected, the signal is not being output from the computer, or the signal is not reaching the projector. Make sure the connectors are securely attached to both the projector and the image source. Then check that

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6 • Troubleshooting