Webster IRP 4100 Installation Manual page 46

• IRP 4500 only: Make sure that the cables between your
computer and the projector are all connected properly. Refer
to"Cable Connections" on page 15.
• Make sure you have selected computer on the projector control
panel (or remote controller).
• Change the video resolution setting of your computer display
controller to agree with your projector. Change the monitor
model setting so that the output video refresh rate is not more
than 75 Hz.
• Shut down your Windows or Macintosh operating system, cycle
computer power, and restart the computer while leaving the
projector on.
If you are getting video from the computer but the image is of poor
quality or unstable:
• Refer to "Auto Image" instructions in your projector's manual. It
may help to disable your Windows screen saver while making
this adjustment.
• Adjust Brightness, Contrast, Tint, and Color (refer to the
projector's manual).
• Change the video resolution setting of your computer display
controller to agree with your projector. Change the monitor
model setting so that the output video refresh rate is not more
than 75 Hz.
• Shut down your Window or Macintosh operating system, cycle
computer power, and restart the computer while leaving the
projector on.
If you have a portable or laptop computer and when you are
connected to the projector you get a projected image but the image
on your computer display disappears:
• You will need to set up your computer to re-activate its built-in
display. Refer to your projector manual or your computer manual
or call PolyVision Technical Support at 1.800.620.POLY.
44 TROUBLESHOOTING