Epson Powerlite 720c Multimedia Projector Users Guide

Solving Problems65
The message Not Supported is displayed.
Make sure your computer’s resolution doesn’t exceed UXGA and the 
frequency is supported by the projector (see page 93). If necessary, 
change your computer’s resolution setting as described below. 
Only part of the computer image is displayed.
■Make sure the image Position setting is correct on the Video 
menu. See page 40 for more information.
■Make sure your computer’s resolution setting is correct. Ideally, it 
should be 1024 
× 768 to match...

66Solving Problems
The image isn’t rectangular, but trapezoid-shaped.
■Make sure the projector isn’t placed off to one side of the screen, 
at an angle, or the image won’t be rectangular. Place the projector 
directly in front of the center of the screen, facing the screen 
squarely.
■If you’ve tilted the projector upward by extending the legs, the 
image will be broader at the top. Turn on Auto Keystone 
correction as described on page 45 or hold down the   or   
side of the 
Keystone button on top of...

Solving Problems67
The image is blurry.
■Adjust the focus using the focus ring.
■There may be dirt or smears on the lens. Clean the lens as 
described on page 52.
■Make sure the lens is not fogged by condensation. You may need 
to wait before using the projector after moving it from a cold 
environment.
■Adjust the Sharpness setting on the Video menu (see page 40). 
When you change video settings, you should be able to see the 
effect on the screen immediately. If you’re projecting from a 
computer, you...

68Solving Problems
The colors of the image are not right.
■If you’re displaying a computer image, use the Color Mode 
option in the projector’s Video menu to adjust the color. If you’re 
displaying video, adjust the 
Color, Tint, and Gamma settings on 
the Video menu. 
■Try adjusting the Color Temp setting on the Advanced menu.
■Check your computer display settings to correct the color balance.
There is no sound.
■Try turning up the volume (see page 42). 
■If you’re using a VCR or other video source,...

Solving Problems69
Solving Problems with the Remote 
Control
The projector doesn’t respond to remote control commands.
■Make sure the tape has been removed from the battery tray as 
described on page 32. 
■Make sure you are within 20 feet of the projector, and within 
range of the projector’s front or back sensor (approximately 30° to 
the left or right and 15° above or below).
■The remote control battery may not be installed correctly or may 
be low on power. Change the battery as described on page 32....

70Solving Problems
Where To Get Help
EPSON provides technical assistance through electronic support 
services 24 hours a day, as listed in the following table.
Telephone Support Services
To use the EPSON PrivateLine Support service, call (800) 637-7661 
and enter the PIN on the EPSON PrivateLine Support card included 
in your owner’s kit. This is the fastest way of speaking to a live 
representative, and it’s free. This service is available 6
AM to 6PM, 
Pacific Time, Monday through Friday, for the...

Solving Problems71
Before you call, please have the following information ready:
■Product name (EPSON PowerLite 720c or EPSON 
PowerLite 730c)
■Product serial number (located on the bottom of the projector)
■Computer or video configuration
■Description of the problem
You can purchase screens, carrying cases, or other accessories 
from EPSON at (800) 873-7766 or by visiting the EPSON Store at 
www.epsonstore.com (U.S. sales only). In Canada, please call 
(800) 463-7766 for dealer referral
.
720-730.book...

72Solving Problems
720-730.book  Page 72  Thursday, October 30, 2003  11:32 AM 

Appendix A: Connecting to Additional Equipment73
A
Appendix A: Connecting to 
Additional Equipment
This appendix explains how to connect the projector to a desktop 
computer or Macintosh, or a high-end workstation. 
The following information is covered:
■Installing the projector
■Connecting to a PC desktop computer
■Connecting to a desktop Macintosh
■Connecting to a high-end workstation
720-730.book  Page 73  Thursday, October 30, 2003  11:32 AM 

74Appendix A: Connecting to Additional Equipment
Installing the Projector
The projector can be installed for three different viewing setups:
front projection, ceiling mounting, or rear projection onto a 
semi-transparent screen.
To project from overhead, you’ll need to select 
Ceiling in the 
projector’s Advanced menu. To project from the rear, select 
Rear 
Proj
. See page 46 for more information.
If you’re ceiling-mounting the projector and you place it above screen 
level, you’ll have to tilt it down...