Sony PCG-NV290 - Manual (Page 186)

VAIO Computer Quick Start
186
How do I switch the computer screen (LCD) from LCD to TV?
Press Fn+F8 to select either the computer or TV display. See “Selecting a display
mode” for more information.
Is the CD-RW reading speed slower than the CD-ROM or CD-R reading speed?
Generally the CD-RW reading speed is slower than the CD-ROM and the CD-R
reading speeds, although reading speeds vary depending on the format you are
using.
The Fn+F8 key combination will not work once a DVD is inserted into the
optical drive. Switching the display while a DVD is playing may cause the
computer to malfunction, and you may need to restart the DVD software.