Sony PCG-GRX500K Primary User Manual page 102

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3 Click the Settings tab, and then click the Advanced button. The "(Multiple
Monitors) and Mobility Radeon Properties" dialog box appears.
(Multiple Monitors) and Mobility Radeon Properties screen
4 Click the Displays tab and select the display settings by clicking the
icon on the panel of your display choice. For more information, click the
Help button.
✍
If you cannot see your movie or DVD on the external display, change the monitor or TV
setting by clicking on the Secondary
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icon and changing it to Primary .