Sony PCG-R505JL - Manual (Page 59)

Connecting an External Display
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3 Plug the audio cable into the green Headphone jack on the right side of the
notebook.
4 See the manual that came with your projector for more information on
installation and operation.
To select a display
When you connect an external display to the Monitor port, press Fn+F7 to toggle
the output between the Liquid Crystal Display (LCD), the external monitor, or
both devices. See “Selecting the Display Mode”for more information.
Connecting projector
✍
You cannot use the Monitor port on your notebook when the docking station is
connected to the notebook.
Projector
Power cord
RGB signal cable
Audio cable
To
Headphones