Epson PowerLite 500c User Manual Supplement page 112

The image has a distorted, crooked or keystone
(trapezoid) shape.
This may be caused by extending the legs and tilting the
projector to position the image. Press the right + or left –
side of the
Keystone
and hold either side of the button until the image is
rectangular.
Make sure the projector is perpendicular to the screen. If
the projector is not pointed straight at the screen, your
image will be distorted.
Only part of the computer image is displayed.
If the computer's output resolution setting is higher than
1024 768 (PowerLite 710c/700c) or 800
(PowerLite 500c), the image is resized.
If the computer output is not compatible with this resizing,
choose a different display setting as follows:
Windows:
In Windows 95/98, right-click on the desktop, select
, click the
Properties
box to select the resolution you want. In Windows 3.x,
use Windows Setup in the Main program group. See
your Windows help for more information.
PowerBook or Macintosh:
Choose
Control Panels
then choose
Monitors
and select
Options
another 1024
or 800 600 setting (PowerLite 500c). For more
information, see your PowerBook documentation.
For supported display settings, see the User's Guide
Supplement on the projector CD-ROM.
You also may need to modify existing presentation files if
you created them for a different resolution. See your
software manual for specific information.
button on top of the projector. Press
tab, and use the dialog
Settings
under the Apple menu and
. In the Monitors screen, choose
Macintosh Hi-Res Display
768 setting (PowerLite 710c/700c)
Solving Problems
600
or
69