ViewSonic PJ820 User Manual

PJ820 Office Theater

User’s Guide

Guide de l’utilisateur

Bedienungsanleitung

Maual de instucciones

TM

30" to 300" (Viewable)

Super Bright SVGA LCD Projector

User’s Guide

ViewSonic PJ820

TM

Office Theater

Super Bright SVGA LCD Projector

30" to 300" (Viewable)

Super Bright SVGA LCD Projector

ViewSonic® Corporation

Copyright © ViewSonic Corporation, 1997. All rights reserved.

IBM XT, AT, 386, 486, and PS/2 are registered trademarks and/or trademarks of International Business Machines (IBM) Corporation.

PC-98 is a trademark of NEC Corporation.

Pentium is a registered trademark of Intel Corporation.

Macintosh II Family, LC, LCII, Quadra, Performa, and Power Mac are registered trademarks of Apple Computer, Inc.

Windows is a registered trademark of Microsoft Corporation.

ViewSonic, OnView, and the three birds logo are are registered trademarks of ViewSonic Corporation. Office Theater is is a trademark of
ViewSonic Corporation.

VESA and EDID are registered trademarks of the Video Electronics Standards Association. DDC is a trademark of VESA.

Disclaimer: ViewSonic Corporation shall not be liable for technical or editorial errors or omissions contained herein; nor for incidental or
consequential damages resulting from furnishing this material, or the performance or use of this product.

In the interest of continuing product improvement, ViewSonic Corporation reserves the right to change product specifications without notice.
Information in this document may change without notice.

No part of this document may be copied, reproduced, or transmitted by any means, for any purpose without prior written permission from
ViewSonic Corporation.

The label on the bottom
of the projector shows the
model number and serial
number. Write the serial
number below.

For your records

The serial number of this product is on the bottom of the monitor. Write the serial number in the space below and
keep this guide as a permanent record of your purchase to aid in identification in the event of theft or loss.

Model Name: ViewSonic PJ820

Model Number: VPRJ21357-2

Serial Number: ______________________

ii

ViewSonic PJ820

Safety Guidelines

Caution: Use a power cable that is properly grounded. Always use the AC cords listed

below for each area:

USA . . . . . . . . . . . . . . . . . . . . . . . . UL

Canada . . . . . . . . . . . . . . . . . . . . . CSA

Germany . . . . . . . . . . . . . . . . . . . . VDE

Switzerland . . . . . . . . . . . . . . . . . . SEV

Britain . . . . . . . . . . . . . . . . . . . . . . . BASEC/BS

Japan . . . . . . . . . . . . . . . . . . . . . . . Electric Appliance Control Act

In other areas, use AC cord which meets local safety standards.

FOR EUROPEAN VERSION ONLY

This appliance is supplied with a moulded three pin mains plug for your safety and
convenience. A 13 amp fuse is fitted in this plug. Should the fuse need to be replaced,
ensure that the replacement fuse has a rating of 13 amps and that it is approved by
ASTA or BSI to BS1362. Check for the ASTA mark

or the BSI mark

of the fuse.

If the plug contains a removable fuse cover, you must ensure that it is refitted when the
fuse is replaced. If you lose the fuse cover, the plug must not be used until a
replacement cover is obtained. A replacement fuse cover can be purchased from your
local ViewSonic dealer.

IF THE FITTED MOULDED PLUG IS UNSUITABLE FOR THE SOCKET OUTLET IN
YOUR HOME, THEN THE FUSE SHOULD BE REMOVED AND THE PLUG CUT OFF
AND DISPOSED OF SAFELY. THERE IS A DANGER OF SEVERE ELECTRICAL
SHOCK IF THE CUT OFF PLUG IS INSERTED INTO ANY 13 AMP SOCKET.

If a new plug is to be fitted, please observe the wiring code as shown below. If in any
doubt, please consult a qualified electrician.

WARNING: THIS APPLIANCE MUST BE GROUNDED.

Important: The wires in the main leads are coloured in accordance with the following code:

The colors of the wires in the main leads of this appliance may not correspond with the colored
markings identifying the terminals in your plug. Please comply with the following instructions:

Note: To replace the fuse, open the fuse

Green-Yellow . . . . . . . . . . . . . . . . . . . . . Ground

Blue . . . . . . . . . . . . . . . . . . . . . . . . . . . . Neutral

Brown . . . . . . . . . . . . . . . . . . . . . . . . . . Live

l The Green-Yellow wire must be connected to the Green or Green-Yellow terminals in

the plug marked with the letter E or with the ground symbol.

l The Blue wire must be connected to the Black

terminal in the plug marked with the letter N.

l The Brown wire must be connected to the Red

terminal in the plug marked with the letter L.

compartment with a screwdriver.

on the body

ViewSonic PJ820

iii

FCC Information

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause unacceptable interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:

l Reorient or relocate the receiving antenna.

l Increase the separation between the equipment and receiver.

l Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

l Consult your dealer or an experienced radio/TV technician for help.

FCC Warning:

To assure continued FCC compliance, the user must use a grounded power supply cord and the provided shielded
video interface cable with bonded ferrite cores. Also, any unauthorized changes or modifications to this projector
would void the user’s authority to operate this device.

Power Supply Cord

USA

For units with 100-120V input voltage in the USA, use the following:

UL Listed and CSA Certified Type SVT or SJT No. 18/3 AWG rated 125VAC 8A minimum. One end terminated in a molded on
parallel blade, grounding attachment cap or hooded attachment cap (15A, 125V configuration), other end terminated in a molded on
appliance coupler.

CE Certification

This device complies with the requirements of the EEC directive 89/336/EEC with regard
to Electromagnetic compatibility.

Note when handling the power cord

Do not remove the ferrite core which is attached to the accessory power cord. If the ferrite core is removed, electromagnetic
interference may result.

iv

ViewSonic PJ820

IMPORTANT SAFETY NOTICE

Warning To prevent damage which may result in fire or shock hazard, do not

expose this appliance to rain or moisture.

The lightning flash with arrowhead symbol within an equilateral
triangle, is intended to alert the user to the presence of uninsulated
“dangerous voltage” within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the product.

Caution This equipment comes with a three-pin grounding-type power plug,

which is a safety feature. Do not remove the grounding pin on the
power plug. This plug will only fit a grounding-type power outlet.
If you are unable to insert the plug into the outlet, contact an
electrician. Do not defeat the purpose of the grounding plug by
removing it.

Do not remove

For other important safety information, see Chapter 5 Care and Safety Tips.

ViewSonic PJ820

v

vi

ViewSonic PJ820

CONTENTS

Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

FCC Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

1. Getting Started

Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Quick Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Projector Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Setting Up the Projector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Screen Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Standard Setup Positions and Dimensions . . . . . . . . . . . . . . . . . . . . . 7

System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Side Connector Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Inserting Batteries into the Remote Control Unit . . . . . . . . . . . . . . 11

Turning the Power On and Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2. Operation

The Projector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

The Remote Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Using the Remote Control Unit as a Wireless Mouse/Pointer . . . . 17

Operating Range of the Remote Control Unit . . . . . . . . . . . . . . . . . 18

Changing the Input Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

System Format Selection for S-Video Input Signals . . . . . . . . . . . . 21

Switching the Signal Mode During RGB Signal Input . . . . . . . . . . 21

Displaying the On-Screen Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Resetting Adjustment Values to Factory Settings . . . . . . . . . . . . . . 21

Adjusting the Vertical Position of the Projected Picture . . . . . . . . . 22

Adjusting the Lens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Changing the Projection Method . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Adjusting the Picture Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Adjusting the White Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Adjusting the Picture Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Adjusting the Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Adjusting the Horizontal Size/Width . . . . . . . . . . . . . . . . . . . . . . . . 29

About Dot Clock Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Adjusting the Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Other Useful On-Screen Functions . . . . . . . . . . . . . . . . . . . . . . . . . 33

ViewSonic PJ820 Contents

vii

3. Technical Data

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Timing Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Using the Serial Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Pin Configuration and Signal Names for RGB Input Connectors . . 42

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4. Troubleshooting

Problems, Causes and Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

5. Care and Safety Tips

Safety Precautions and Helpful Hints . . . . . . . . . . . . . . . . . . . . . . . 47

Cleaning and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

viii

Contents

ViewSonic PJ820

GETTING STARTED

Package Contents

TM

Congratulations on purchasing a ViewSonic PJ820 Office Theater
package includes:

TM

l

ViewSonic PJ820 Office Theater

l

Video cable with 15-pin high density (HD) mini D-sub connector

l

Remote control

l

Two AA batteries

l

PS/2 mouse cable with 13-pin round connector for PC

l

9-pin serial mouse cable with 13-pin round connector for PC

l

AC power cable

l

A/V cable

l

Lens cap

l

User’s guide

l

Software diskette or CD-ROM which includesViewSonic® monitor installation file (VS*.inf) for
Windows® 95 (required for Plug & Play).

Important!

Save the original box and all packing material for future shipping needs.

LCD projector

LCD projector! Your ViewSonic PJ820

1

ViewSonic PJ820

Getting Started

1

Features

Superior Image ...

l

The three-panel active matrix LCD designed with 750 ANSI lumens* projects an exceptionally
bright and sharp image with true 16.7 million colors, out-performing most one-panel LCD or one­chip DLP projectors.

l

The high contrast ratio provides sharp, crisp images that are legible even in a well lit room.

l

Advanced video compression ensures a sharp image with all the detail and lines present after
compression.

l

The optical advanced prism uniformity system ensures maximum brightness and sharpness
throughout the screen without any dark corners or edges (by actively converting P-Polarized lights to
S-Polarized light.)

System Flexibility ...

l

Equipped with DDC1TM and DDC2BTM for Plug & Play compatibility with both new and legacy
computers, saving setup time.

l

The wireless pointer/remote control maximizes the presenter's effectiveness by combining an
infrared pointer with a wireless remote to adjust both projected image and audio, eliminating
confusion caused by two handheld devices.

l

Up to three input sources in a variety of formats are supported, including NTSC, PAL, SECAM, and
S-Video.

l

Muting functions can be accessed from the projector and from the remote control enabling the
presenter to easily mute video and audio.

l

True SVGA resolution ensures images from a wide variety of applications are projected with true
fidelity, compatible with computers that support from VGA up to 1,024 x 768** resolution.

Ergonomic Design ...

l

At 21.6 pounds (9.8 kg.) the projector is lightweight and portable.

l

The contour of the wireless pointer/remote control fits comfortably in the hand.

Environmentally Friendly ...

l

All plastic parts are recyclable. All materials are strictly selected for ease of maintenance,
inspection, and disposal.

l

Our shipping cartons are made of recyclable material.

* Maximum brightness varies with lamp age and environmental conditions.
** 1024 x 768 (advanced video compression).

2

Getting Started

ViewSonic PJ820

Quick Installation

Look for the serial number on the bottom
of the PJ820 Projector. Please write it in
the space provided (page ii, For your

1

records) in front of the user’s guide.

Read the user's guide thoroughly before
installing the projector. Before connecting
the projector, be sure all video and audio

2

sources are turned off.

If one of the sources

is a computer, is it an

IBM® or compatible?

Ye s

Connect the audio and video signal
source(s), such as computer(s), VCR(s),
Laser Player(s), audio system, etc.

3

following the instructions on the next
pages.

Turn all audio and video sources on.
Then, turn the PJ820 LCD Projector

4

on.

If error message “No Signal” appears,
See Troubleshooting (Chapter 4).

5

Adjust user controls according to
personal preference. (see Chapter 2)

6

6

Is the image

satisfactory?

Ye s

Installation is complete.

Enjoy your new PJ820

Color LCD Projector!

No

No

Macintosh® users, contact ViewSonic® (see
Chapter 4) to order a ViewSonic Macintosh Kit

2

a

(Part No. PJMAC1).

See

a

Troubleshooting
(Chapter 4).

6

ViewSonic PJ820

Getting Started

3

Projector views: back, bottom, side

Lamp unit cover

to access lamp

Side

Screw for removing
the lamp unit cover
to replace the lamp

Remote control signal receptor

receives infrared signals from Remote
Control Unit

Back

Fixed legs

Adjuster button unlocks the

adjustable legs

Front

Air filter

Adjustable legs (two) adjusts the angle of
inclination of the projector

4

Getting Started

ViewSonic PJ820

Setting up the projector

The projector must be horizontal to get a distortion-free picture. Place the projector on a tabletop or similar
surface and follow the procedure below to ensure that no distortion of the picture occurs. Also see page 22.

1 Lift the front of the projector until the bottom of projector is a few inches above the tabletop. While holding

it in this position, press the adjuster buttons under the sides of the projector (one at left and right corners).
The left and right adjustable legs drop down until they reach the setup surface.

NOTE: Do not release the buttons until both legs have reached the setup surface.

Adjuster
button

Adjuster
button

2 Release the adjuster buttons. The adjustable legs lock into place as the buttons are released.

Up to 2 3/8" (60mm)

Adjustable legs

3 Turn the adjustable legs by hand in either direction to make fine adjustments to the level of the projector so

that the projector is perfectly horizontal. The legs can be extended by up to 2 3/8" (60 mm). If you try to
extend them any further than this, they spin freely.

To retract the legs:

1 Hold the projector firmly while lifting the front of the projector slightly.
2 Press and hold the adjuster buttons.
3 Gently lower the projector.

ViewSonic PJ820

Getting Started

5

Screen requirements

The ViewSonic PJ820 projects images onto flat screens. However, the brightness and viewable range varies
with each type of screen. Selecting a screen with characteristics that are suitable for the intended use is
important.

Screen Type

Polarized screen

White screen

Silver screen

FRONT Reflective Screens

Ceiling

Screen Characteristics

Because the surface of the screen has been treated to make it
polarized, it will only reflect light from a single direction.
Consequently, if you use such a screen with an LCD projector, a
clear image can be obtained even in bright rooms because the
screen hardly reflects any extraneous light.

This type of screen can be seen from anywhere, so there are no
limits on the viewing position. However, the surrounding walls
should be darkened as in a movie theater, otherwise a clear picture
cannot be obtained.

This type of screen is recommended when the projector is
suspended from the ceiling. This type of screen gives a picture 2-4
times brighter than a white screen. A variety of types are available
from different manufacturers, and each type has different
brightness characteristics. Some also have restrictions on the
possible range of viewing positions.

Beaded screen

Maximum
brightness

Flexible
translucent screen

Rigid-type
translucent screen

REAR Translucent

Screens

Maximum
brightness

Reduced
brightness

Care should be taken with screens that have a high gain, as these
types of screen can cause color distortion at the left and right
edges.

This type of screen is recommended when the projector is placed
on the floor. This type of screen is similar to the silver screen,
except that no color distortion occurs at the left and right edges.
Moreover, most of the light is reflected at the same angle as the
angle of incidence.

Floor

This type of screen is made of PVC (polyvinyl chloride). It has the
same characteristics as silver screens, but sometimes has hot spots.

This type of screen is made of acrylic plastic. It is extremely
durable and has excellent optical characteristics. It performs the
same as silver screens.

6

Getting Started

ViewSonic PJ820

Standard setup positions

The illustrations and standard setup dimensions below help you determine where to set up the projector.
Distance L from the projector to the screen and the height H do not vary, regardless whether the floor, table or
ceiling are used to set up the projector, or whether a front or rear projection screen is used.

Ceiling mount

Side
View

Projected image

Lower edge of projected image

Table mount

Top
View

Projected image

L: Projection distance
H: Height from lower edge of projected image to center of lens

Standard setup dimensions

The further away the projector is from the screen, the bigger the picture is (image as shown in the table below).
See also the table of screen requirements in this chapter with descriptions of various types of screens. These
descriptions will help you determine whether to set up in front of or behind the screen and where to set up in
the room. The projector uses a x 1.5 electronic zoom lens for adjusting the projection distance. You can also
move the lens up or down. For instructions on adjusting the lens, the front of the projector, and focusing the
image, see the Chapter 2 Operation. When the projector is not completely vertical with the screen and
horizontal to the floor, the projected image distorts. The values in the table below are approximate.

Projection size Projection distance (L) Height from lower edge of

Minimum Maximum projected image to center of lens (H)

30 3’3" (1.0m) 4’11" (1.5m) 0-18" (0-0.457m)

40 4’7" (1.4m) 6’6" (2.0m) 0-24" (0-0.610m)

60 6’10" (2.1m) 10’2" (3.1m) 0-36" (0-0.914m)

80 9’2" (2.8m) 13’9" (4.2m) 0-48" (0-1.219m)

100 11’9" (3.6m) 17’4" (5.3m) 0-60" (0-1.524m)

150 17’8" (5.4m) 26’2" (8.0m) 0-90" (0-2.286m)

200 23’7" (7.2m) 35’1" (10.7m) 0-120" (0-3.048m)

250 29’6" (9.0m) 43’11" (13.4m) 0-150" (0-3.810m)

300 35’5" (10.8m) 53’1" (16.2m) 0-180" (0-4.572m)

ViewSonic PJ820

Getting Started

7

System configuration

• Turn off the power supply of each system component before connecting any of the components.

• Read the instruction manual for each system component before connecting it.

• If there is a lot of jitter in the video signal input from the video source, the picture on the screen may

flicker. In such cases, it will be necessary to connect a TBC (time base corrector).

• The projector can be connected to video signal sources which output VIDEO, S-VIDEO and analog RGB

signals (0.6-8.0 Vp-p synchronized signals).

• The projector has built-in speakers. However, you will need to connect a separate audio system to the

AUDIO OUT terminal if your needs specify high sound volumes. No sound will come out of the projector’s
built-in speaker while the AUDIO OUT terminal is being used.

Audio system

Laser disc player

This serial port
allows you to
control the
projector.

VCR

Side Connector Panel

Connecting to audio-visual equipment

In the above diagram, if the S-VIDEO IN and VIDEO IN connectors are both used at the same time, the S­VIDEO IN signal input has priority. To view the signal being input to the VIDEO IN connector, disconnect the
plug from the S-VIDEO IN connector.

Only one audio signal input is available for S-VIDEO or VIDEO signals. Select one or the other.

If the video signal source is connected using a cable with a BNC junction plug, use a BNC/RCA adapter to
convert the pin jack.

If an audio system is connected to the AUDIO OUT connector, the sound volume balance and muting can be
controlled by the Remote Control Unit which is supplied with the projector. However, if the volume is set to
“0”, no audio signal will be output from the AUDIO OUT connector.

8

Getting Started

ViewSonic PJ820

An Example of Computer Connections

MonitorComputer

Audio system

To audio
output
terminal

To video
output
connector

D-SUB 15-pin
(male)

ViewSonic

1 2

Macintosh* adapter
(accessory)

D-SUB 15-pin
(male)

ViewSonic

1 2

This serial port allows you
to control the projector

13-pin (male)

PC mouse cable (for
PS/2 or serial)

Computer

To mouse connector

ViewSonic

1 2

RGB signal cable
(VGA)

To video output terminal

To video output connector

*Macintosh computers require a ViewSonic Macintosh Compatibility Kit. Contact ViewSonic (See Chapter 4
Troubleshooting for contact details) to obtain the kit.

NOTE: For instructions on using the Remote Control Unit in place of the computer’s mouse see Operations
Chapter 2. Make sure to turn on the main power to the projector before turning on the personal computer. If
using a personal computer with a suspend/resume function, the infrared mouse function may not operate until
the computer is restarted. This function operates only when input to the RGB 1 connector has been selected.

For details about the pin configuration for the RGB connector and what kinds of computers can be connected
to the projector see Specifications Chapter 3.

ViewSonic PJ820

Getting Started

9

Side Connector Panel

RGB OUT connects
to a monitor for
output from RGB1
or RGB2

RGB 2 (RGB IN/
AUDIO IN) input
RGB and audio
signals

RGB 1 (RGB IN/AUDIO IN) input
RGB and audio signals

AUDIO OUT (stereo mini)
connector that provides
audio output for the
selected audio input
source

Side Connector Panel

S-VIDEO IN

MOUSE connector to connect an accessory or separate
mouse cable, allowing you to operate a personal computer
with the pointer/cursor button then click buttons on the
Remote Control Unit instead of using a mouse

VIDEO IN terminal to
input composite video
signals

AUDIO IN (L-R)
connectors for S-VIDEO/ VIDEO
input and corresponding audio
signals for the VIDEO IN or S­VIDEO IN terminal

SERIAL connector to connect
a computer to the projector for
external control of the projector

10

Getting Started

ViewSonic PJ820

Insert batteries before using the Remote Control Unit

1 Open the battery compartment cover. Push the marked cover down firmly and pull toward you to remove it.

2 Insert two AA batteries so their direction matches the polarity markings inside the compartment. Do not use

rechargeable (Ni-Cd) batteries.

3 Close the battery compartment cover.

More about the batteries

To prevent damage to or leaking of the batteries, follow these safeguards:

Replace both batteries at the same time.

Do not mix old and new batteries or batteries of different types (such as alkali and manganese batteries).

Do not burn spent batteries or put them in with combustible garbage.

Do not short-circuit a battery (connecting positive to negative).

Do not open a battery (with a tool like a screwdriver).

Do not recharge disposable batteries.

ViewSonic PJ820

Getting Started

11

Turning the power On and Off

CAUTION: If the MAIN POWER switch on the projector is pressed while the cooling fan is still
operating, the operating life of the projector lamp will be shortened. Be sure to follow the procedures
given below when turning the projector power on and off.

Power indicator

Power button

Main power switch

Power button

Turning the power On

1 Press the MAIN POWER switch on the projector to the ON (|) position. The power indicator turns red and

the projector switches to Standby Mode.

Projector

2 Press the POWER button on either the top of the projector or on the Remote Control Unit. The power

indicator alternates between green and orange. When it stops at green, a picture is projected onto the screen
after about 15 seconds.

Projector

Remote control

12

Turning the power Off

1 Press the POWER button on either the top of the projector or on the Remote Control Unit. The power

indicator turns red and the projector switches to Standby Mode.

2 Wait approximately 90 seconds until the cooling fan stops.

3 Press the MAIN POWER switch to the OFF (O) position. The power indicator switches off.

Projector

CAUTION: Do not turn the MAIN POWER switch to the OFF position, unplug the power cord from the
wall socket, or shut off the main power supply until the cooling fan stops.

NOTE: If the power is turned off using the POWER button, the cooling fan continues to operate

approximately 90 seconds while the inside of the projector is still at high temperature.

Continued

Getting Started

ViewSonic PJ820