Sony VPL-CX21 Guide De Référence Rapide page 18

Projecting
Before connecting the equipment, plug the AC power cord into a wall outlet.
a Press the I/1 (on/standby) key.
b Turn on the computer connected to the projector.
c Press the INPUT key to select the input source.
d When the computer is connected, set it to output the video signal to only the external
monitor.
1 2
1 2
On/Stand by
Power
COVER
AC IN
ENU
3 4
3 4
or
INPUT
F7 Fx
Input A
and
Video
Fn
S-Video
6
Projecting