Sony VPCCA390X - Manual (Page 80)

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Using Peripheral Devices >
Connecting an External Display
5 Click located at the lower right corner of the PowerDVD BD window, enable the 3D function, and click Auto Detect.
✍
You can change the screen resolution of your computer. Click located at the lower right corner of the PowerDVD BD window and the menu item
for changing the screen resolution.
See the help file included with the PowerDVD BD for more information.
6 Insert Blu-ray 3D Disc media into the optical disc drive.