Epson PowerLite 70c User manual

EPSON

®

PowerLite

®

50c/70c

Multimedia Projector

User’s Guide

ii

Important Safety Information

WARNING: Never look into the projector lens when the lamp is turned on; the bright light can damage your eyes.

Never let children look into the lens when it is on. Never open any cover on the projector, except the lamp and

filter covers. Dangerous electrical voltages inside the projector can severely injure you. Except as specifically

explained in this

User’s Guide

, do not attempt to service this product yourself. Refer all servicing to qualified service

personnel.

WARNING: The projector and its accessories come packaged in plastic bags. Keep plastic bags away from small

children to avoid any risk of suffocation.

Caution: When you replace the lamp, never touch the new lamp with your bare hands; the invisible residue left by

the oil on your hands may shorten the lamp life. Use a cloth or glove to handle the new lamp.

Copyright Notice

any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior

written permission of SEIKO EPSON CORPORATION. The information contained herein is designed only for

use with this EPSON product. EPSON is not responsible for any use of this information as applied to other

products.

Neither SEIKO EPSON CORPORATION nor its affiliates shall be liable to the purchaser of this product or third

parties for damages, losses, costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse,

or abuse of this product or unauthorized modifications, repairs, or alterations to this product, or (excluding the

U.S.) failure to strictly comply with SEIKO EPSON CORPORATION’s operating and maintenance instructions.

SEIKO EPSON CORPORATION shall not be liable for any damages or problems arising from the use of any

options or any consumable products other than those designated as Original EPSON Products or EPSON

Approved Products by SEIKO EPSON CORPORATION.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

PowerLite and Presenters Club are registered trademarks; EPSON Store and SizeWise are trademarks; and

EPSON PrivateLine and Extra Care are service marks of Epson America, Inc.

General Notice: Other product names used herein are for identification purposes only and may be trademarks of

their respective owners. EPSON disclaims any and all rights in those marks.

CPD-11578

Contents

iii

Contents

Welcome

Using Your Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Reading This Manual Online. . . . . . . . . . . . . . . . . . . . . . 2

Getting More Information . . . . . . . . . . . . . . . . . . . . . . . . 3

Registration and Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1

Setting Up

the Projector

Unpacking the Projector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Additional Components. . . . . . . . . . . . . . . . . . . . . . . . . . 6

Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Positioning the Projector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Choosing Your Connections. . . . . . . . . . . . . . . . . . . . . . . . . . 9

Connecting to a Computer. . . . . . . . . . . . . . . . . . . . . . . . . . 10

Connecting to a PC Laptop . . . . . . . . . . . . . . . . . . . . . . 10

Connecting to a PC Desktop Computer . . . . . . . . . . . . 12

Connecting to a PowerBook . . . . . . . . . . . . . . . . . . . . . 14

Connecting to a Macintosh Desktop Computer. . . . . . . 16

Connecting to Video Sources . . . . . . . . . . . . . . . . . . . . . . . . 18

Connecting the RCA A/V Video Cable . . . . . . . . . . . . . 18

Connecting an S-Video Cable . . . . . . . . . . . . . . . . . . . . 19

Connecting a Component Video Cable . . . . . . . . . . . . . 19

Connecting to External Speakers or a PA System . . . . . . . . . 21

2

Using the

Projector

Turning On Your Equipment. . . . . . . . . . . . . . . . . . . . . . . . 23

What To Do If You See a Blank Screen . . . . . . . . . . . . . 25

Adjusting Your Image. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Focusing Your Image . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Adjusting the Image Size . . . . . . . . . . . . . . . . . . . . . . . . 28

Adjusting the Image Height . . . . . . . . . . . . . . . . . . . . . . 29

Adjusting the Image Shape. . . . . . . . . . . . . . . . . . . . . . . 30

Adjusting the Image Quality . . . . . . . . . . . . . . . . . . . . . 30

iv

Contents

Using the Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Installing the Remote Control Batteries . . . . . . . . . . . . . 31

Operating the Projector with the Remote Control . . . . . 32

Using the Remote Control as a Wireless Mouse . . . . . . 32

Controlling Audio and Video. . . . . . . . . . . . . . . . . . . . . . . . 33

Switching Between Picture Sources . . . . . . . . . . . . . . . . 33

Freezing the Picture . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Turning Off the Picture and Sound. . . . . . . . . . . . . . . . 34

Adjusting Sound Volume. . . . . . . . . . . . . . . . . . . . . . . . 34

Highlighting Your Presentation . . . . . . . . . . . . . . . . . . . . . . 35

Using the Cursor/Stamp Arrow . . . . . . . . . . . . . . . . . . . 35

Drawing a Horizontal Bar . . . . . . . . . . . . . . . . . . . . . . . 35

Shutting Down the Projector . . . . . . . . . . . . . . . . . . . . . . . . 36

3Fine-Tuning

the Projector

Using the Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Changing Menu Settings . . . . . . . . . . . . . . . . . . . . . . . . 38

Adjusting the Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Adjusting the Sound. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Customizing the Highlighting Tools . . . . . . . . . . . . . . . . . . 41

Customizing Projector Features . . . . . . . . . . . . . . . . . . . . . . 42

Viewing Projector Information. . . . . . . . . . . . . . . . . . . . . . . 43

Restoring the Default Settings . . . . . . . . . . . . . . . . . . . . . . . 44

4Maintaining

and

Transporting

the Projector

Cleaning the Lens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Cleaning the Projector Case . . . . . . . . . . . . . . . . . . . . . . . . . 46

Cleaning the Air Intake Vent . . . . . . . . . . . . . . . . . . . . . . . . 47

Replacing the Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Transporting the Projector . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5Solving

Problems

Using the On-Screen Help . . . . . . . . . . . . . . . . . . . . . . . . . 51

Checking the Projector’s Lights . . . . . . . . . . . . . . . . . . . . . . 53

Image or Sound Problems . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Problems with the Remote Control . . . . . . . . . . . . . . . . . . . 57

Where To Get Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Contents

v

6Technical

Specifications

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Projection Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Mouse Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Computer Connector Pin Assignments . . . . . . . . . . . . . . . . 61

Compatible Video Formats . . . . . . . . . . . . . . . . . . . . . . . . . 62

7Notices

Important Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . 65

Remote Control Information . . . . . . . . . . . . . . . . . . . . . . . . 67

Declaration of Conformity. . . . . . . . . . . . . . . . . . . . . . . . . . 68

FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . 69

Index

W

Welcome

1

Welcome

Your EPSON

®

PowerLite

®

50c or PowerLite 70c is a small,

lightweight, affordable projector offering powerful 3-LCD

performance and easy-to-use controls. Your projector weighs less than

7 pounds and displays full-color images at a resolution of up to

800 × 600 pixels (EPSON PowerLite 50c) or 1024 × 768 pixels

(EPSON PowerLite 70c).

Producing up to 700 ANSI lumens (EPSON PowerLite 70c) or

1000 ANSI lumens (EPSON PowerLite 50c), your projector creates

bright images that can be easily seen in rooms light enough to take

notes.

You can connect it simultaneously to two image sources: a computer

and a video device, such as a VCR, DVD player, laser disc player,

camcorder, or digital camera. You can also connect audio for each

image source.

You can operate your projector through a hand-held remote control,

with buttons for zooming in on your image, adjusting volume, and

accessing all the projector’s features. You can also use the remote

control as a wireless mouse, and run your presentation as you move

around the room.

EPSON’s SizeWise

™

technology supports a range of computer

outputs, for a full-size image from just about any notebook PC or

PowerBook.

®

If you use a VCR or other video source, the projector

automatically senses the video format, so you can use it with

confidence no matter where in the world you travel.

The EPSON

®

PrivateLine

SM

Technical Support program will get you

help when you need it. A special 800 number and your own PIN will

connect you with a projector support specialist—fast.

2

Welcome

Using Your Documentation

To connect the projector to your laptop and get your presentation

running fast, see the Quick Setup sheet that came in your Owner’s Kit.

This book contains all the information you need to set up and use

your projector. Please follow these guidelines as you read through it:

■

Warnings must be followed carefully to avoid bodily injury.

■

Cautions must be observed to avoid damage to your equipment.

■

Notes contain important information about your projector.

Reading This Manual Online

Your EPSON PowerLite CD-ROM includes an electronic copy of

this manual. You may find it convenient to copy it onto your laptop’s

hard drive so it’s always with you—for example, when taking your

presentation on the road.

To view your electronic manual, you need to use Adobe

®

Acrobat

®

Reader. Just insert the CD-ROM in your drive, select the

Install/View User’s Guide

button and click

Install User’s Guide

or

View User’s Guide

.

When you open the manual, you see this toolbar:

You have several ways to navigate through the manual:

■

Click in the table of contents on the left side of the screen to move

quickly to the topic of your choice.

■

Use the arrow buttons in the toolbar or on the vertical scroll bar

on the right side of the screen to move through the manual.

warning

caution

note

If you do not have Acrobat

Reader, you can install it

f

rom the CD-ROM.

next pageprevious page

first page

last page

show navigation

pane

Welcome

3

■

If you hold your mouse pointer over text and the hand changes to

an index finger, you can click to jump to a related topic.

For more information, see your Acrobat Reader online guide.

Getting More Information

Need more tips on giving presentations? How about quick steps for

setting up your projector? Here’s where you can look for help:

■

www.presentersonline.com

Includes a library of articles covering presentation tips, tricks, and

technology. The site provides templates, clip art and sound clips,

as well as Presenters Services to use on the road. Even more

resources and services are available if you register to join the

Presenters Club

®

—and it’s free.

■

Quick Setup sheet

Gives you all the instructions you need to get your projector set

up and connected to a laptop or PowerBook computer.

■

Owner’s Kit

Includes your Quick Setup sheet, warranty brochures, CD-ROMs,

and EPSON PrivateLine Support card. Store this User’s Guide in

the folder and keep the folder with your projector at all times.

■

Built-in help system

Provides assistance for common problems. Available from the

Help

button on the projector or the remote control. See page 51

for details.

■

support.epson.com

Download FAQs and e-mail your questions to EPSON support.

■

CD-ROMs

Your Owner’s Kit includes the EPSON PowerLite CD-ROM that

lets you register electronically, and includes the electronic copy of

this book as well as a link to Presenters Online.

note

You don’t need to install any

software to use your projector.

4

Welcome

If you still need help after checking this User’s Guide and the sources

listed above, you can use the EPSON PrivateLine Support service to

get help fast. Call (800) 637-7661 and enter the PIN on the card in

your Owner’s Kit. Or take advantage of EPSON’s automated support

services 24 hours a day. See page 58 for more information.

Registration and Warranty

Your projector comes with a basic carry-in warranty as well as an

international warranty that let you project with confidence anywhere

in the world. For details, see the warranty brochures included in your

Owner’s Kit.

In addition, for customers who register their projector, EPSON offers

free Extra Care

SM

Road Service. In the unlikely event of an equipment

failure, you won’t have to wait for your unit to be repaired. Instead,

EPSON will ship you a replacement unit anywhere in the United

States or Canada, usually via overnight delivery. See the brochure in

your Owner’s Kit for details.

To register, simply insert the EPSON PowerLite CD-ROM that came

with your projector and select

Register Online

. Registering also lets

you receive special updates on new accessories, products, and services.

You can register through the Internet, by e-mail or 800-number

modem connection, or by printing out the form to fax or mail.

1

Setting Up the Projector

5

Setting Up the Projector

This chapter tells you how to unpack your projector and set it up for a

presentation. The projector must be connected to a computer or a

video source such as a DVD player, VCR, camcorder, digital camera,

or other video device before it can project images.

To set up the projector, you need to:

■

Unpack and position the projector

■

Connect the projector to one or more input sources

Unpacking the Projector

Make sure you have all the parts shown:

Save all packaging in case you need to ship the projector. Always use

the original packaging (or the equivalent) when you need to send the

projector to another location. If you are moving the projector by

hand, use a carrying case (either an EPSON case or something similar,

such as a laptop case). See page 50 for transportation instructions.

PS/2 mouse

cable

USB mouse

cable

projector with lens cover

remote control batteries computer

cable

power cord

CD-ROM (not

needed to use

the projector)

A/V cable

Soft carrying case

note

You won’t need all these

components; your

configuration will determine

which ones you need.

6

Setting Up the Projector

Additional Components

Depending on how you use the projector, you may need these

additional components:

■

To receive an S-Video signal, you need an S-Video cable (usually

provided with your video device).

■

Older iMac

™

systems may need a special adapter to provide a

VGA output port; see your computer dealer.

■

To project HDTV images, you’ll need an HDTV cable, available

from most electronics dealers.

■

To receive an audio signal, you’ll need a stereo mini-jack cable,

available from most electronics dealers.

Optional Accessories

To enhance your use of the projector, EPSON provides the following

optional accessories:

Product Product number

Customized carrying cases:

ATA molded hard shell carrying case

ATA shipping case

Samsonite

®

wheeled soft case

Notebook/Projector soft shoulder bag

ELPKS36

ELPKS37

ELPKS35

ELPKS13

Replacement lamp ELPLP13

Ceiling mount ELPMB35

Projection screens:

50-inch portable screen

60-inch Insta Theatre screen

80-inch Insta Theatre screen

ELPSC06

ELPSC07

ELPSC08

Component video cable ELPKC19

Macintosh adapter set ELPAP01

Kensington security lock ELPSL01

Presentation audio system ELPPAS1

Wireless microphone system ELPCVS1

Setting Up the Projector

7

You can purchase these accessories from your dealer, or by calling

EPSON at (800) 873-7766, or by visiting the EPSON Store

™

at

www.epsonstore.com (U.S. sales only). In Canada, please call

(800) 873-7766 for dealer referral.

Positioning the Projector

The location in which you choose to set up your projector depends on

the size of the room and your presentation style.

■

Place the projector on a sturdy, level surface, within this distance

from the screen:

3.3 to 36 feet in Wide mode

3.9 to 43.2 feet in Tele mode

(see page 28 for more information on these modes)

■

Make sure there is plenty of space for ventilation around and

under the projector.

■

Make sure the projector is within 6 feet of a grounded electrical

outlet or extension cord, and within 5 feet of your computer

and/or video source.

■

Place the projector directly in front of the center of the screen,

facing it toward the screen squarely. Otherwise, your image will

not be square.

Most presenters find it convenient to place the screen in the front of

the room with the projector back near the front of the audience,

leaving ample room between the screen and projector to get a

good-sized image. Then the presenter can stand in front of the room,

facing the audience and control the equipment from there.

note

It’s best to position the screen

directly in front of the room.

If it’s placed diagonally in a

corner, it’s much more

difficult to aim the projector

at the screen correctly and get

a square image.

8

Setting Up the Projector

Use the figure below as a guideline to help you determine how far

from the screen to place the projector. Your image size may not exactly

match these sizes; its actual size depends on whether you have adjusted

the image size setting (using keystone correction or the

Wide/Tele

button).

When projecting from a table, the ideal arrangement is to set the

projector flat on its surface with the base of the lens at about the level

of the bottom of the screen. This delivers the best-looking picture.

If you have to raise the projector by adjusting its feet (described on

page 29), you’ll need to square-up the sides of image by pressing the

Keystone

button (see page 30).

If you’ll be projecting from overhead, you’ll get the best-looking

picture by mounting the projector upside-down, parallel to the

ceiling, with the bottom of the lens level with the top of the screen.

(You’ll also need to select ceiling projection mode in the projector’s

Advanced menu; see page 42.)

4 ft.8 ft.40 ft. distance from the

screen

Setting Up the Projector

9

Choosing Your Connections

The connections you’ll need to make depend on the equipment you’re

using, whether your presentation includes sound, and whether you

plan to use the remote to run your presentation.

■

Connecting to a computer or laptop

For many presentations, the only connection you’ll need is

between your computer and the projector; see page 10.

■

Connecting to video sources

You can connect the projector to a DVD player, VCR,

camcorder, laser disc player, digital camera, or another type of

video source. You can even connect a video source and computer

at the same time and switch between the two; see page 18.

■

Using the remote control

You can use the remote control to switch between input sources,

zoom into your image, and control other projector features.

To use the remote control as a wireless mouse, you’ll need to

connect one of the projector mouse cables. Then you can click

through your presentation from up to 32 feet away. See page 31

for instructions on using the remote control.

■

Including sound in your presentation

If your presentation includes sound, you can connect an audio

cable to use the projector’s built-in speaker. See the instructions

for your input source in “Connecting to a Computer” on page 10

and/or “Connecting to Video Sources” on page 18.

If you need more volume, you can also connect the projector to

external speakers or a public address system; see page 21.

10

Setting Up the Projector

Connecting to a Computer

Follow the instructions in these sections for the type of computer you

need to connect:

■

“Connecting to a PC Laptop” below

■

“Connecting to a PC Desktop Computer” on page 12

■

“Connecting to a PowerBook” on page 14

■

“Connecting to a Macintosh Desktop Computer” on page 16

Connecting to a PC Laptop

To connect the projector to your laptop, notebook computer, or

hand-held device, you need to use the computer cable. If you’ll be

using the remote control as a wireless mouse, you need to connect a

mouse cable. If you’ll be using audio through the projector’s speakers,

you need to connect an audio cable (not included with the projector).

Connecting the Computer Cable

Before you start, turn off your laptop and the projector.

1. Connect one end of the computer cable to the projector’s

Computer

port.

2. Connect the other end of the cable to your laptop’s video-out or

monitor port.

3. Tighten the screws on the connectors.

If you don’t need to make any other connections, you can plug in and

turn on your equipment; see page 21 for instructions.

note

Laptop configurations vary.

See your manual if you’re not

f

amiliar with the ports on

y

our laptop.

Setting Up the Projector

11

Connecting the Mouse Cable

To use the remote control as a wireless mouse, you need to connect a

mouse cable: either the round PS/2 or the flat USB mouse cable.

1. Connect one end of the appropriate mouse cable to the PS/2

Mouse/Com

port or the USB Mouse port on the projector.

2. Connect the other end to your laptop’s external mouse or USB

port.

3. If necessary, configure your laptop to work with an external

mouse.

If you don’t need to make any other connections, you can plug in and

turn on your equipment; see page 21 for instructions.

Connecting the Audio Cable

If you’ll be using audio through your projector’s speakers, you need to

connect a stereo, mini-jack audio cable (not included).

1. Connect one end of the audio cable to the

Audio In

port on the

projector.

2. Connect the other end to the laptop’s headphone or audio out

jack.

note

See page 32 for instructions

on using the remote control as

a wireless mouse.

You can use the USB port for

a mouse only on systems

configured originally with

Windows

®

98 or 2000. If

you upgraded your system

from Windows 3.1 or 95, the

USB port may not work as a

mouse port.

note

If you need additional

volume (in a large

auditorium, for example),

you can also connect external

speakers or a public address

system to the projector. See

page 21 for instructions.

12

Setting Up the Projector

If you don’t need to make any other connections, you can plug in and

turn on your equipment; see page 21 for instructions.

Connecting to a PC Desktop Computer

To connect the projector to your PC desktop computer, you need to

use the computer cable. If you’ll be using the remote control as a

wireless mouse, you need to connect a mouse cable. If you’ll be using

audio through the projector’s speakers, you need to connect an audio

cable (not included with the projector).

Connecting the Computer Cables

Before you start, turn off your projector and computer.

1. Disconnect the monitor cable from the monitor port on the back

of your computer.

2. Connect one end of the computer cable to the projector’s

Computer

port.

3. Connect the other end of the computer cable to your computer’s

video (monitor) port.

4. Tighten the screws on the connectors.

If you don’t need to make any other connections, you can plug in and

turn on your equipment; see page 21 for instructions.

Setting Up the Projector

13

Connecting the Mouse Cable

To use the remote control as a wireless mouse, you need to connect a

mouse cable: either the round PS/2 or the flat USB mouse cable.

1. Connect one end of the appropriate mouse cable to the PS/2

Mouse/Com

port or the USB Mouse port on the projector.

2. Connect the other end to the mouse port on your computer.

3. Tighten the screws on the connectors.

If you don’t need to make any other connections, you can plug in and

turn on your equipment; see page 21 for instructions.

Connecting the Audio Cable

If you’ll be using audio through your projector’s speakers, you need to

connect a stereo, mini-jack audio cable (not included).

1. Connect one end of the audio cable to the

Audio In

port on the

projector.

2. Connect the other end of the audio cable to the speaker or

audio out port on the computer’s sound card. If you don’t need to

make any other connections, you can plug in and turn on your

equipment; see page 21 for instructions.

note

See page 32 for instructions

on using the remote control as

a wireless mouse.

You can use the USB port for

a mouse only on systems

configured originally with

Windows 98 or 2000. If you

upgraded your system from

Windows 3.1 or 95, the USB

port may not work as a mouse

port.

note

If you need additional

volume (in a large

auditorium, for example),

you can also connect external

speakers or a public address

system; see page 21 for

instructions.

14

Setting Up the Projector

Connecting to a PowerBook

You can connect your projector to most PowerBooks that support an

external monitor. To connect the projector to your PowerBook, you

need to use the computer cable. If you’ll be using the remote control

as a wireless mouse, you need to connect a mouse cable. If you’ll be

using audio through the projector’s speakers, you need to connect an

audio cable (not included with the projector).

Connecting the Computer Cable

Before you start, turn off your PowerBook and the projector.

1. Connect one end of the computer cable to the projector’s

Computer

port.

2. Connect the other end to your PowerBook’s monitor port.

3. Tighten the screws on the connectors.

If you don’t need to make any other connections, you can plug in and

turn on your equipment; see page 21 for instructions.

Setting Up the Projector

15

Connecting the Mouse Cable

To use the remote control as a wireless mouse, you need to connect

the USB mouse cable.

1. Connect one end of the USB mouse cable to the USB

Mouse port on the projector.

2. Connect the other end to the USB port on your PowerBook.

If you don’t need to make any other connections, you can plug in and

turn on your equipment; see page 21 for instructions.

Connecting the Audio Cable

If you’ll be using audio through your projector’s speakers, you’ll need

to connect a stereo, mini-jack audio cable (not included).

1. Connect one end of the audio cable to the

Audio In

port on the

projector.

2. Connect the other end to the audio out port on your PowerBook.

If you don’t need to make any other connections, you can plug in and

turn on your equipment; see page 21 for instructions.

note

Your Macintosh must be

using Macintosh OS 8.51 or

later for USB support.

See page 32 for instructions

on using the remote control as

a wireless mouse.

note

If you need additional

volume (in a large

auditorium, for example),

you can also connect external

speakers or a public address

system; see page 21 for

instructions.

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Epson PowerLite 70c, PowerLite 50c User manual

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