Epson Powerlite 820p Multimedia Projector Users Guide

Solving Problems75
If you’re using Macintosh OS X: 
1. Select 
System Preferences.
2. Select 
Displays.
3. Make sure the 
VGA Display dialog box is selected.
4. Click the 
Arrange tab.
5. Make sure the 
Mirror Displays checkbox is selected.
The message Not Supported is displayed.

Make sure the Comp1 Input and Comp2/ YCbCr options in the 
Setting menu are correct. See page 56.

Make sure your computer’s resolution doesn’t exceed UXGA 
(1600 
× 1200), and the frequency is supported by the projector 
(see...

76Solving Problems

You also may need to modify existing presentation files if you 
created them for a different resolution. See your software 
documentation for specific information.
The image isn’t square, but trapezoid-shaped.

If you’ve tilted the projector upward by extending the legs, the 
image will be broader at the top. Hold down the   or   
button on top of the projector until the image is square.

If the projector isn’t directly in front of the screen, facing the 
screen squarely, the image...

Solving Problems77

Adjust the Sharpness setting on the Video menu (see page 48). 
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 may also need to adjust the tracking and sync as 
described in the next section. If you don’t like the new settings, 
you can always select 
Reset to return to the factory default 
settings.
You see vertical stripes or the image still looks blurry after 
trying the solutions in the...

78Solving Problems3. Hold down the 
Shift button and press the Sync– and Sync+ 
buttons to increase the sharpness of the image. 
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 Color Mode 
settings on the Video menu.

Try changing the Color Adjustment setting on the Advanced 
menu.

Check your computer display settings to correct the color...

Solving Problems79

Make sure the Windows volume controls on your computer are 
not turned all the way down or set to Mute. You may be able to 
check this by clicking the volume control in your Windows 
System Tray (lower right corner of the screen).

Make sure the A/V Mute button is not enabled.

The wrong source may be selected. Press the Computer/YCbCr 
or Video button on the projector—or the Comp1, 
Comp2/YCbCr
, Video, or S-Video button on the remote 
control—to select the correct source.   
Solving...

80Solving 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...

A
Appendix A: Connecting to Additional Equipment81
A
Appendix A: Connecting to 
Additional Equipment
This appendix explains how to connect the projector to a desktop PC 
or Macintosh, high-end workstation, more than one computer, or a 
DVI video source. It also provides guidance on setting up the 
projector in a permanent installation. 
The following information is covered:

Installing the projector

Connecting to a PC desktop computer

Connecting to a desktop Macintosh

Connecting to a second computer...

82Appendix A: Connecting to Additional Equipment
Installing the Projector
The projector can be installed for four different viewing setups: front 
projection, ceiling mounting, rear projection onto a semi-transparent 
screen, or rear/ceiling projection, as shown: 
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 “Setting Advanced Features” on page 57.
If you’re mounting the projector on the ceiling and you place...

Appendix A: Connecting to Additional Equipment83
Controlling the Projector from a Computer
If you want to be able to control the projector’s settings from a 
computer, you can install the EMP Link program. You can download 
this program, plus its User’s Guide, from EPSON’s web site at 
support.epson.com. You’ll also need a serial or USB cable to connect 
the projector to the computer.
Connecting to an External Audio System
The projector’s internal speakers are loud enough for most rooms. 
However, if...

84Appendix A: Connecting to Additional Equipment
Connecting to a PC Desktop Computer
You can connect the projector to any IBM-compatible PC. This 
section includes instructions for the following:

Connecting the computer cable 

Connecting the mouse cable (if you want to use the remote 
control as a mouse or use USB audio)

Connecting the audio cable (if you’ll be projecting with audio)
Follow the steps in each section for the cables you need to connect. 
Before beginning, make sure the projector and...