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 page 106). If necessary, change your computer’s resolution 
setting as described on the following page. 
Only part of the computer image is displayed.

Press the Resize button on the remote control.

Make sure the image Position setting is correct on the Video 
menu. See page 48 for more information.

Make sure your computer’s resolution setting is correct. Ideally, it 
should be 1024 
× 768 (811p and 820p) or 800 × 600 (600p) to 
match the projector’s native resolution. If this option isn’t 
available, select one of the other compatible video formats listed 
on page 106.

Windows:
Right-click the desktop, select 
Properties, click the Settings 
tab, and select a different resolution. 

Macintosh:
On the Apple menu, choose 
Control Panels, then click 
Monitors and Sound. Select a different resolution. 
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							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 will be broader at the left or right side. 
Hold down the   or   button on top of the projector until the 
image is square.
The image contains static or noise.

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

If you’re using a computer cable longer than 6 feet (2 meters), or 
an extension cable, the image quality may be reduced.

Keep your computer and video cables away from the power cord 
as much as possible to prevent interference.

The video signal may be split between the computer and the 
projector. If you notice a decline in the projected image quality 
when the image is displayed simultaneously on your laptop 
computer and the projector, turn off the laptop’s LCD display.
The image is blurry.

There may be dirt or smears on the lens. Clean the lens as 
described on page 62.

Adjust the focus using the focus ring.

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 to a warm environment.
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							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 previous section.

If you’re projecting from a computer and displaying an image that 
contains a lot of fine detail, you may notice one or more vertical 
stripes or bands, or some of the characters may look heavy or 
blurred. Press the   button on the projector or the 
Auto button 
on the remote control. This resets the projector’s tracking and 
sync settings.

If further adjustment is needed, you can fine-tune the Tracking 
and 
Sync settings manually using the buttons on the projector’s 
control panel (or using the Video menu as described on page 48).
1. Fill the screen with an image containing fine detail when 
making these adjustments. For example, in Windows you can 
select a pattern to appear as your desktop background. If this 
option isn’t available, try projecting black text on a white 
background.
2. Hold down the 
Shift button and press the Tracking– or 
Tracking+ buttons to eliminate vertical stripes. 
(If you don’t see any changes on screen while pressing the 
buttons, select 
Reset All in the projector’s menu system as 
described on page 59; then repeat the tracking adjustment.)
Resi e
Tracking - Tracking +
Sync-
KeystoneShift
Auto
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							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 balance.
There is no sound.

Try turning up the volume. Press the right side of the Volume 
button on the remote control or the projector’s control panel.

If you’re using a VCR or other video source, make sure the 
volume is not turned all the way down or muted. Also, make sure 
the cables are connected correctly, as described in Chapter 1.

If your presentation includes computer audio, make sure the 
volume control on your computer is not turned all the way down 
or muted. Make sure the USB cable is securely connected to the 
projector and your computer, and the drivers are installed (if 
you’re using a Macintosh, audio via a USB cable is supported on 
Mac OS 9.0 and 9.1 only.) If you’re using the audio cable, make 
sure it is securely connected to both the projector and your 
computer’s   headphone jack or   audio out jack. See page 14 
(for laptops) or Appendix A (for other systems).
Ri
Sync+
Tracking - Tracking +
Sync-
KeystoneShift
Auto
note
Because of the different 
technologies used, your 
projected image may not 
exactly match the colors on 
your laptop or computer 
monitor.
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							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 Problems with the Remote 
Control
The projector doesn’t respond to remote control commands.

Make sure the remote control is turned on.

Make sure you are within 30 feet (9 meters) of the projector, and 
within range of the projector’s front or back sensor 
(approximately 30° to left or right and 15° above or below).

The remote control batteries may not be installed correctly or may 
be low on power. To change the batteries, see page 34.

Dim the room lights and turn off any fluorescents. Make sure the 
projector is not in direct sunlight. Strong lighting, especially 
fluorescent lights, may affect the projector’s infrared receivers.

Turn off any nearby equipment that emits infrared energy, such 
as a radiant room heater.
You can’t control the mouse pointer with the remote 
control.
Make sure the cable is securely connected to both your computer’s 
mouse or USB port and the projector’s mouse or USB port. For 
details, see page 13 (for laptops) or Appendix A (for other systems).
on/off 
switch
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							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 duration of your 
warranty period.
You may also speak with a projector support specialist by dialing one 
of these numbers:

U.S.: (562) 276-4394, 6AM to 6PM, Pacific Time, Monday 
through Friday

Canada: (905) 709-3839, 6AM to 6PM, Pacific Time, Monday 
through Friday
Toll or long distance charges may apply.
Before you call, please have the following information ready:

Product name (EPSON PowerLite 600p, 811p, or 820p)

Product serial number (located on the bottom of the projector)

Computer 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
.
Service Access
World Wide Web From the Internet, you can reach EPSON’s product support page at 
http://support.epson.com. 
After selecting your product, you can access 
troubleshooting information, download product documentation, and receive 
technical advice through e-mail.
Presenters Online Access tips, templates, and training for developing successful presentations at 
http://www.presentersonline.com
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							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

Connecting to a high-end workstation

Connecting to a DVI video source
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							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 it above 
screen level, you’ll have to tilt it down to position the image on-screen. 
This causes the image to lose its square shape. You can then correct 
the distortion by using the 
V Keystone function in the projector’s 
menu system (see “Customizing Projector Features” on page 55) or by 
using the 
Keystone buttons on the projector’s control panel. 
If you place the projector’s lens so it’s level with the top of the screen, 
the image will be square and you won’t have to adjust it. If you place 
the lens lower than the top of the screen, you’ll have to tilt the 
projector upward if you want to fill the whole screen with the image. 
front projection
ceiling mounting
rear projectionrear/ceiling projection
note
See “Positioning the 
Projector” on page 10 for 
more information.
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							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 your installation requires maximum volume and sound 
quality, you can connect the projector to external speakers or a public 
address (PA) system. This disables the projector’s internal speakers.
If you’ve connected multiple audio and video sources to the projector, 
the projector will automatically switch the audio along with the video 
source whenever you choose a different video source. (See “Switching 
Between Picture Sources” on page 29 or page 35.)
To connect the projector to an external sound system, you will need 
an RCA-to-3.5 mm stereo audio cable, which may be included with 
your sound system, or may be purchased from an electronics store. 
Before you start, make sure the projector and speakers or PA system 
are turned off.
1. Connect the cable’s 3.5-mm stereo miniplug to the projector’s 
Audio Out jack.
2. Connect the RCA plugs on the opposite end of the cable to the 
left and right jacks of your speaker or PA system. 
Audio Out jack
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							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 computer are turned 
off. If you need help with positioning the projector, see page 10.
Connecting the Computer Cable
1. Disconnect the monitor cable from the video port on the back of 
the computer.
2. If you’ll be viewing the display on your computer monitor as well 
as the projector screen, connect the monitor cable to the 
projector’s 
Monitor Out port, as shown. 
Monitor 
Out port
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