Sony PCG-F640 - Manual (Page 45)

Using the DVD-ROM Drive
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5 Close the tray by pushing it gently.
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Be sure to seat the disc firmly over the hub fingers. If you do not seat the disc firmly,
you could damage your DVD-ROM drive and you may not be able to open the tray.
When you finish using a disc, wait until the LED indicator light turns off, then press the
Eject button to remove the disc.
When the computer is in Power Saving modes, you cannot remove a disc. See
“Controlling Power Management” in the online manual “Customizing Your VAIO®
Notebook” for more information about Power Saving modes.
If the disc does not come out when you press the Eject button, turn off the computer
and insert a thin, pointed object into the manual eject hole.
Manual eject hole