Boxlight 3750, 6750 User Manual

Copyright © 1998 by B oxlight Corporation.

Poulsbo, Washington. All rights reserved.

FCC Warn in g

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 protec ti on agai nst harmf ul int erference when the equipment
is operated in a commercial environment. This equipment generates, uses, and
can radiate radio frequen cy e n e rgy and, if n ot in st alled and used in accordance
with the instruction manual, may cause harmful interference to radio communi­cations. Operation of this equipment in a residential area is likely to cause harm­ful interference in which case the user will be required to correct the interference
at his own expense.

DOC (Canada)

This Class A digital apparatus meets all requirements of the Canadian Interfer­ence-Causing Equipment Regul at ion s .
Cet appareil numerique de la classe A respecte toutes les exigences d u Regl ement
sur le materiel brouilleur du Canada.

Safety Certifications

UL, CUL, TÜV

EN 55022 Warning

This product is int e nde d for use in a commercia l, industrial, or educational envi­ronment. It is not intended for residential use.

This is a Class A product. In a dome stic environment it may cau se rad io interfer­ence, in which case the user may be required to take adequate measures. The typ­ical use is in a conference room, me e t in g room or au ditorium.

W enn das Produkt Boxlight 3750/6750 in Deutschland verkauft wird, muss es
Umwelt geschuetzt sein. (Klasse B) Dieses Product muss mit dem Bundesamt fuer
Post und Telekommunikation registriert sein. (BAPT)

Declaration of Conformity

Manufacturer: Boxligh t Corporation
19332 Powder Hill Place , Pou lsb o , Washington USA

We declare under our sole responsibilit y that the Boxlight 3750/6750 LCD projec­tors conform to the fo llowing directives and n o rms:

Directive 89/336/EEC, Amended by 93/68/EEC
EMI: EN 55022 (1992) Class A
EMC: EN 50082-1 (1992)
Directive 73/23/EEC, Amended by 93/68/EEC
Safety: EN 60950: 1992 + A1 + A2 + A3: 1995

April, 1998

Trademarks

Apple, Macintosh, and PowerBo ok are trademarks or registered trademarks of
Apple Computer, Inc. IBM and PS/2 are trademarks or registered trademarks of
International Business Machines, Inc. MicroSaver and Kensington are trademarks
or registered trademarks of Ken s in g t on M ic roware Li m it e d. M ic roso ft , Po we r­Point, and Windows are trademarks or registered trademarks of Microsoft Corpo­ration. CablePro is a trademark or registered trademark of Box lig h t Corporation.

Icon copyrighted by and used with the permission of Apple Computer, Inc.

All Rights Rese rved.

TABLE OF CONTENTS

Safety Summary iii

Introduction 1

Image Resolution 1
Compatibility 2
Unpacking the Projector 2
Usage Guidelines 5
If You Need Assistance 5
Warranty 5

Setting up the Projector 7

Connecting the CablePro™ to the Projector 8
Selecting Connectors on the CablePro 8
Preparing to Connect Your Equipment to the Projector 10
Connecting an IBM-Compatible Laptop Computer 11
Connecting an IBM-Compatible Desktop Computer 13
Connecting an Apple PowerBook Computer 15
Connecting a Macintosh Desktop Compute r 17
Connecting a Video Player 19
Connecting an External Speaker 21
Powering up the Projector and Adjusting the Image 21
Turning Off the Projector 22

Using the Projector 23

Basic Image Adjustment 23
Using the Remote Control 23
Adjusting the Projector 25
Using the Keypad Buttons 27
Using the On-Screen Menus 29
Display Menu Functions 31
Audio Menu Functions 33
Image Menu Functions 35
Controls Menu Functions 37

i

Table of Contents

Maintenance & Troubleshooting 39

Cleaning the Lens 39
Cleaning the Fan Intake Filter 39
Replacing the Projection Lamp 41
Replacing the Batteries in the Remote Control 43
Using the Kensington Lock 43
Troubleshooting 44
Solutions to Common Problems 45

Appendix 49

Specifications 49
Accessories 51
Portable and Laptop Activation Chart 53
Using Video Mirroring with a PowerBook Computer 57
Projected Image Size 58

Index 61

ii

SAFETY SUMMARY

Please read these instructions carefully before using your projec­tor. Failure to comply with them could result in fire, electrical
shock, personal injury or damage to equipment.

These graphics are used throughout this manual to draw your
attention to important information about the projectors.

NOTE: Additional useful details or tips.

CAUTION: Steps to take to avoid damage to your equipment.

WARNING: Steps to take to avoid personal injury.

These graphics are used on the projector ’s labels.

Attention - Refer to this User’s Guide for important

safety information.

CAUTION- Hot Surfaces - Avoid touching hot surfaces.

Do not touch until the projector has cooled.

Do Not Look Into The Lens!

Be extremely careful not to lo ok into the pr o jection len s when th e
projector is turned on. The bright light may harm your eyes. Be
especially careful to keep children from looking into the lens.

Power Source

Use only a three-wire grounding type power source. The power
source should not exceed 250 volts rms between the supply con­ductors or between either conductor and the ground.

Power Cord

Use only the power cord that was shipped with the projector.
Although other power cords might be similar in appearance, they
have not been safety-tested with the projector. Do not use a
power cord if it has become damaged or frayed. Contact Boxlight
at 1-800-762-5757 if you need to replace your power cord.

iii

Safety Summary

Grounding

The projector is grounded through the grounding conductor on
the power cord. To avoid electric shock, plug the power cord into
a properly wired receptacle. Do not defeat the purpose of the
grounding-type plug.

Lamp

T o avoid over heating and unacceptable image quality, replace the
projection lamp with a lamp of the specified type. Refer to
page 49 for lamp specifications and to page 41 for instructions on
replacing the lamp.

Lamp Compartment

To avoid burns, do not open the lamp module door until the pro­jector is turned off and the lamp has cooled for at least 30 min­utes. Follow the instructions in this manual for lamp replacement
carefully.

Hot Surfaces

Allow the projector to cool at least 30 minutes before replacing a
lamp. When you open the lamp housing, be very careful not to
touch the hot surfaces inside.

NOTE: If you open the projector

case, you will void the warranty.

iv

Ventilation and Overheating

Openings in the projector case provide ventilation to protect it
from overheating. Keep loose papers and other objects well away
from the grills. Do not place the projector on top of or close to a
computer or other heat-producing equipment.

Liquid Spills

Do not set drinks on top of the projector. Spilled liquids can flow
inside and cause damage.

Do Not Disassemble

All projector service must be performed by Boxlight. The only
user-serviceable part in the projector is the projection lamp,
which you can replace by opening the lamp cover on the bottom
of the projector (see page 41). Do not open any other part of the
projector.

INTRODUCTION

The Boxlight 3750 and 6750 lightweight multimedia projectors
combine powerful and sophisticated features with easy-to-use,
intuitive controls. Built-in multimedia features include audio, a
palette of 16.7 million colors and active matrix liquid crystal dis­play (LCD) technology. The projectors are ideal for high-perfor­mance business, training and imaging applications that demand
exceptional color quality. The 3750 has SVGA 800x600 graphics,
the 6750 has XGA 1024x768 graphics. The user interfaces of the
two products are identical; information in this User’s Guide
applies to both products.

NOTE: For models 3750-INT or
6750-INT: To use video input, an
optional video board must be
installed in the projector. Contact
Boxlight for more information.

Image Resolution

LP 3750

The SVGA resolution of the 3750’s projected image is 800x600.
Screen resolutions between 800x600 and 1024x768 are com­pressed to 800x600. The 3750 cannot compress screen resolutions
above 1024x768. If your computer’s screen resolution is higher
than 1024x768, reset it to a lower resolution before you connect
the 3750.

LP 6750

The XGA resolution of the 6750’s projected image is 1024x768.
Screen resolutions between 1024x768 and 1280x1024 are com­pressed to 1024x768. The 6750 cannot compress screen resolu­tions above 1280x1024. If your computer’s screen resolution is
higher than 1280x1024, reset it to a lower resolution before you
connect the 6750.

NOTE: The 3750 automatically
expands 640x480 images to
800x600. Yo u can display these
images at 640x480 by turning off
the Auto Resize feature. See “Auto
Resize” on page 35 for more infor­mation.

NOTE: The 6750 automatically
expands 640x480 and 800x600
images to 1024x768. You can dis­play these images at their original
resolutions by turning off the Auto
Resize feature. See “Auto Resize”
on page 35 for more information.

1

Introduction

Compatibility

The projector is compatible with a wide variety of c omputers and
video devices, including:

•

IBM-compatible computers, including laptops, up to 1024x768

NOTE: Selected workstations are

also supported. Contact Boxlight

for details.

resolution (Boxlight 3750) or 1280x1024 resolution
(Boxlight 6750) at 75 Hz.

•

Apple Macintosh and PowerBook computers up to 1024x768
resolution (Boxlight 3750) or 1280x1024 resolution
(Boxlight 6750).

•

Most standard VCRs, camcorders and laser disc players.

Unpacking the Projector

The projector comes with the items shown in Figure 1. Check to
make sure all are included. Contact Boxlight immediately if any­thing is missing.

If you are experienced in setting up presentation systems, use the
Boxlight 3750/6750 Quick Start card that was included in the ship­ping box. For complete details on connecting and operating the
projector, refer to this User’s Guide.

NOTE: The contents of your

shipping box may vary depending

on the configuration you’ve

ordered.

2

2

3

1

4

6

8

5

7

9

F

IGURE

Shipping box contents

1. Boxlight 3750 or 6750 projector 6. CablePro

2. Boxlight 3750/6750 User’s Guide 7. CablePro computer cable

3. power cord 8. CablePro mouse cable

4. remote and batteries 9. CablePro audio cable

5. RCA audio/video (A/V) cable

Not shown: Quick Start card, lens cap, workstation cables (model 6750 only)

1

3

Introduction

F

IGURE

Side view of projector

speaker

connector panel

elevator button

2

remote control
receiver

F

IGURE

power
switch

power
cord
connector

3

focus ring

zoom ring

Front view of projector

4

Usage Guidelines

•

Do not look directly into the projection lens when the projector
is turned on. The bright light may harm your eyes.

•

Do not block the grills on the projector. Restricting the air flow
can cause it to overheat and turn off.

•

Handle the projector as you would any product with glass
components. Be especially careful not to drop it.

•

Avoid leaving the projector in direct sunlight or extreme cold
for extended periods of time. If this happens, allow it to reach
room temperature before use.

•

This projector is not intended for use in a mainf ram e computer
room as defined in the Stand ar d for th e Pr otection of E lectr onic
Computer/Data Processing Equipment, ANSI/NFPA 75.

•

Transport the projector in a vendor-approved hard or soft case.
These cases are listed on page 52. Call Boxlight to order.

If You Need Assistance

The first place to look for help is in this manual. Be sure to check
the guidelines in “Troubleshooting” on page 44.

If this manual doesn’t answer your question, call Boxlight at

1-800-762-5757

.

NOTE: If the projector overheats
and turns off, you must wait about
30 seconds before you attempt to
turn it back on.

Warranty

This product is backed by a limited one-year warranty. The
details of the warranty are printed at the back of this manual.

5

SETTING UP THE PROJECTOR

1 Place the projector on a flat surface.

•

The projector must be within 10 feet (3 m) of your power
source and within 10 feet of your computer.

•

If you want to project from behind a translucent screen, set
up the projector behind your screen. See “Rear Projection”
on page 38 to reverse the image.

•

If you are installing the projector on the ceiling, refer to the
Ceiling Mount Installation Guide that comes with the Ceiling
Mount Kit for more information. To turn the image upside
down, see “Ceiling” on page 38. The Ceiling Mount Kit is
sold separately; see page 52.

2 Position the projector the desired dist ance from the screen.

•

The distance from the lens of the projector to the screen
determines the size of the projected image. Figure 4 shows
three projected image sizes using the lens at minimum
focusing distance. For more information about image size,
see “Projected Image Size” on page 58.

NOTE: An optional extension
cable, sold separately, lets you
increase the distance between the
projector and your computer to
70 feet (21 m). See “Optional
Accessories” on page 52.

3 Make sure the projector and your computer are turned off.

2

5

f

t

.

5

f

t

2

.

5

Projected image size (minimum focusing distance)

.

f

t

.

3.3 ft

6.5 ft.

.

32.5 ft.

F

IGURE

4

7

Setting up the Projector

Connecting the CablePro™II to the Projector

The CablePro II (referred to as “CablePro” in this manual for

CAUTION: Turn off the

computer, monitor and projector

whenever you connect or

disconnect cables.

brevity) simplifies the connection process by providing a central
hub for all the connections between the projector and your com­puter. The connectors on the CablePro are labeled with icons.

Connect the end of the CablePro cable to the

connector on the projector’s connector panel (Figure 5).

NOTE: The projectors are

optimized for use with CablePro II.

If you have CablePros from other

models of projectors, we do not

recommend using them. Image

quality is reduced by using a

CablePro other than CablePro II.

The label on the bottom reads

CablePro or CablePro II.

F

5

IGURE

Connecting the CablePro to the projector

NOTE: You must disconnect all

cables before turning the selector

on the CablePro.

8

Selecting Connectors on the CablePro

Turn the selector on the top of the CablePro to reveal the correct
connectors for your computer.

F

6

IGURE

Selecting connectors on the CablePro

•

If you’re connecting an

puter

, turn the selector until the window displays “PC.”

IBM-compatible desktop or laptop com-

computer

audio

•

If you’re connecting a

computer

, turn the selector until the window displays “Mac™.”

monitor

mouse

serial

F

IGURE

Selecting the IBM-compatible connectors on the CablePro

Macintosh desktop or an Apple P ow erBook

monitor

mouse

computer

NOTE: The serial connector is
provided for use with a command
center for a fixed installation.

7

audio

F

IGURE

Selecting the Macintosh connectors on the CablePro

8

9

Setting up the Projector

Preparing to Connect Your Equipment to the Projector

Now you’re ready to connect your equipment. Computers are

NOTE: Before you continue,

make sure the projector and your
equipment are turned off. If you’re
connecting a computer, make sure

the distance between it and the

projector is 10 feet or less and

you’ve selected the appropriate

connectors on the CablePro.

connected to the CablePro. Video players and other equipment,
such as external speakers, are connected directly to the projector.

Steps for connecting the different types of equipment are given
on the pages listed below.

Equipment you want to connect Page

IBM-compatible laptop computer page 11
IBM-compatible desktop computer page 13
Apple PowerBook page 15
Macintosh desktop computer page 17
Video player page 19
External speaker page 21

NOTE: In some older computers,

the monitor connector does not

have a hole for Pin 9. If you have

trouble connecting the CablePro

computer cable to your computer,

contact Boxlight.

external
speaker

F

9

IGURE

Connector panel

s-video

composite
video

L/R audio in

wired remote
(optional
accessory)

CablePro

10

Connecting an IBM-Compatible Laptop Computer

1 Plug the end of the CablePro computer cable into the

video connector on your computer.

2 Plug the end of the CablePro computer cable into the

connector on the CablePro.

computer cable

F

IGURE

Connecting the CablePro computer cable to an IBM-compatible laptop computer

Do you want to play your computer’s audio on the projector?

1 Plug either end of the CablePro audio cable into the audio

connector on your computer.

2 Plug the other end of the audio cable into the connector

on the CablePro.

NOTE: Many laptop computers
do not automatically turn on their
external video port when a sec­ondary display device such as a
projector is connected. Refer to
your computer manual for the
command that activates the exter­nal video port. Activation com­mands for some laptop computers
are listed in the Appendix of this
manual on page 53.

10

NOTE: If you don’t w ant audio or
mouse control, you can use the
CablePro Lite with your IBM-com­patible computer. CablePro Lite is
ordered separately. See “Optional
Accessories” on page 52.

11

Setting up the Projector

Do you want to control the computer’s mouse from the projector’s
remote or keypad?

1 Locate the mouse cable and unplug it from your computer.
2 Plug the end of the CablePro mouse cable into the mouse

NOTE: Most laptop computers

do not allow you to use the

computer’s pointing device and the

projector’s remote at the same

time.

connector on your computer.

3 Plug the end of the CablePro mouse cable into the

connector on the CablePro.

mouse cable

computer cable

12

audio cable

F

11

IGURE

Connecting the CablePro audio and mouse cables to an IBM-compatible laptop com­puter

Now you’re ready to power up the projector and your laptop.
Skip to “Powering up the Projector and Adjusting the Image” on
page 21.

Connecting an IBM-Compatible Desktop Computer

1 Locate the cable that connects your monitor to your computer .

Unplug it from the computer.

2 Plug the end of the CablePro computer cable into the

monitor connector on your computer.

3 Plug the end of the computer cable into the connector

on the CablePro.

computer cable

F

IGURE

Connecting the CablePro computer cable to an IBM-compatible desktop computer

12

Do you want to display the image on your computer’s monitor as
well as on the projection screen?

1 Plug your monitor’s cable into the connector on the

CablePro.

Do you want to play your computer’s audio on the projector?

1 Unplug the audio cable, if present, from your computer.

2 Plug either end of the CablePro audio cable into the audio

connector on your computer.

3 Plug the other end of the audio cable into the connector

on the CablePro.

13

Setting up the Projector

Do you want to control your computer’s mouse from the projector’s
remote or keypad?

1 Unplug the mouse cable from your computer.
2 Plug the end of the CablePro mouse cable into the mouse

NOTE: You cannot use your

computer’s mouse and the

projector’s remote at the same

time.

connector on your computer.

3 Plug the end of the CablePro mouse cable into the

connector on the CablePro.

monitor cable

computer cable

audio cable

F

13

IGURE

Connecting the CablePro monitor, audio and mouse cables to an IBM-compatible desk­top computer

mouse cable

Now you’re ready to power up the projector and your computer.
Skip to “Powering up the Projector and Adjusting the Image” on
page 21.

14

Connecting an Apple PowerBook Computer

1 Plug the end of the CablePro computer cable into the

video connector on your PowerBook.

2 Plug the end of the CablePro computer cable into the

connector on the CablePro.

3 If you want the projector display to be the same as the Power-

Book’s screen display, turn on video mirroring. (See “Using
Vid eo Mirro ring with a PowerBook Computer” on page 57 for
additional information.)

PowerBook

computer cable

video-out cable

NOTE: Some Pow erBooks require
the Apple-supplied video-out cable
for external video. Connect it
between the PowerBook and the
CablePro computer cable as shown
in Figure 14.

F

IGURE

Connecting the CablePro computer cable to an Apple PowerBook

Do you want to play your computer’s audio on the projector?

1 Plug either end of the CablePro audio cable into the audio

connector on your PowerBook.

2 Plug the other end of the audio cable into the connector

on the CablePro.

14

15

Setting up the Projector

Do you want to control the computer’s mouse from the projector’s
remote or keypad?

1 Locate the mouse cable and unplug it from your PowerBook.
2 Plug the end of the CablePro mouse cable into the

NOTE: Most laptop computers

do not allow you to use the

computer’s pointing device and the

projector’s remote at the same

time.

(ADB) connector on your PowerBook.

3 Plug the end of the CablePro mouse cable into the con-

nector on the CablePro.

mouse cable

computer cable

audio cable

PowerBook
video-out cable

16

F

15

IGURE

Connecting the CablePro audio and mouse cables to a PowerBook

Now you’re ready to power up the projector and your Power­Book. Skip to “Powering up the Projector and Adjusting the
Image” on page 21.

Connecting a Macintosh Desktop Computer

1 Locate the cable that connects the monitor to your computer.

Unplug it from the computer.

2 Plug the end of the CablePro computer cable into the

monitor connector on your computer.

3 Plug the end of the CablePro computer cable into the

connector on the CablePro.

computer cable

F

IGURE

Connecting the CablePro computer cable to a Macintosh desktop computer

16

Do you want to display the image on your computer’s monitor as
well as on the projection screen?

1 Plug the monitor’s cable into the connector on the

CablePro.

Do you want to play your computer’s audio on the projector?

1 Unplug the audio cable, if present, from your computer.

2 Plug either end of the CablePro audio cable into the audio

connector on your Macintosh.

3 Plug the other end of the audio cable into the connector

on the CablePro.

17

Setting up the Projector

Do you want to control the computer’s mouse from the projector’s
remote or keypad?

1 Unplug the mouse from your Macintosh or locate an unused

ADB connector.

2 Plug the end of the CablePro mouse cable into the mouse

NOTE: You cannot use your

computer’s mouse and the

projector’s remote at the same

time.

connector or the (ADB) connector on your
Macintosh.

3 Plug the end of the CablePro mouse cable into the con-

nector on the CablePro.

monitor cable

mouse

cable

F

17

IGURE

Connecting the CablePro monitor, audio and mouse cables to a Macintosh desktop
computer

computer cable

audio cable

.Now you’re ready to power up the projector and the Macintosh.
Skip to “Powering up the Projector and Adjusting the Image” on
page 21.

18

Connecting a Video Player

1 If your video player uses a round, one-prong composite video

connector, you’ll need only the A/V cable that shipped with
the projector.

•

If your video player uses a round, four-prong S-video con­nector, you’ll need an S-video cable in addition to the A/V
cable. The S-video cable is sold separately. (See “Optional
Accessories” on page 52.)

2 Plug the A/V cable’s yellow connector into the “video-out”

port on your video player (Figure 18). This port may be
labeled “To Monitor.”

•

If you’re using an S-video cable, connect it to the “s-video
out” connector on the video player (Figure 19).

3 Plug the other yellow connector int o the composite connector

on the projector.

•

If you’re using S-video, plug the other end of the cable into
the “s-video” connector on the projector (Figure 19).

NOTE: For models 3750-INT or
6750-INT: To use video input, an
optional video board must be
installed in the projector. Contact
Boxlight for more information.

audio/video cable

F

18

IGURE

Connecting the projector to a video player using the standard A/V cable (with composite

video connector)

19

Setting up the Projector

S-video cable

A/V cable

F

19

IGURE

Connecting the projector to a video player using an S-video cable and the audio con­nectors on the standard A/V cable

4 Plug the A/V cable’s white connector into the left “audio out”

port on your video player. Plug the cable’s red connector into
the right “audio out” port on the video player (Figure 18 and
Figure 19).

CAUTION: Your video player

may also have a “Video Out” port

for a coaxial cable connection.

DO NO T use this to connec t to the

projector.

20

•

If you’re using an S-video cable, the yellow connectors on
the A/V cable remain unused (Figure 19).

5 Plug the A/V cable’s other white and red connectors to the

left and right “audio in” ports on the projector.

The projector is compatible with these major broadcast video
standards: NTSC, NTSC 4.43, PAL, PAL-M, PAL-N, and SECAM.
It automatically adjusts to optimize its perf ormance for the
incoming video. The input signals for SECAM, PAL-M, and
PAL-N video cannot be automatically detected, therefore they
must be chosen manually; see “Video Standard” on page 37.

Connecting an External Speaker

To connect one or two external speakers, plug the speaker cable
into the (audio out) connector on the projector.

F

IGURE

Connecting an external speaker

Powering up the Projector and Adjusting the Image

1 Remove the lens cap.

2 Plug the power cord into the front of the projector, then plug it

into your electrical outlet. A surge-protected power strip is
recommended if power surges are common in your area.

NOTE: The external speakers
must be amplified.

20

NOTE: Alw ays use the pow er cord
that shipped with the projector.

3 Turn on the projector by pressing the “I” side of the power

switch on the front of the projector.

•

The startup screen displays and the Power LED lights (Fig­ure 25 on page 27).

4 If you connected a video player, turn it on.

•

Press the

video

button on the keypad to display the image
from your video player. (You can select a default source to
determine which source the projector examines first during
power-up for active video; see “Default Source” on
page 38.)

•

Use the

volume

buttons to adjust the volume.

CAUTION: If the lamp LED
remains solidly lit after the projec­tor has powered on, the lamp
needs to be replaced. Refer to
“Replacing the Projection Lamp”
on page 41 for more information.

21

Setting up the Projector

•

If you don’t want to hear the sound from your video player,
press the

5

If you connected any external speakers, turn them on.

6

If you connected your monitor, turn it on.

7

Turn on your computer.

•

The computer image should display on the projection

mute

button.

screen. (If a video source is active, press the
ton to display your computer’s image.)

computer

but-

NO TE: With some computers,

the order in which you power up

the equipment is very important.

Most computers should be turned

on last, after all other peripherals

have been turned on. Refer to your

computer’s documentation to

determine the correct order.

CAUTION: When you

disconnect the projector after you

have switched it off, always

remove the power cord from the

electrical outlet first, then remove

it from the projector.

•

If necessary, use the

brightness

buttons on the keypad to
adjust the brightness. You can make further adjustments to
the image from the projector ’s on-screen menus. To open
the menus, press the

menu

button on the keypad. Then
select the Display menu or the Image menu. For m ore infor­mation about the menus, see page 29.

•

If you don’t want to hear the sound from your computer or
video player, press the

mute

button.

Turning Off the Projector

If you want to turn off the projector for a short period of time,
press the

standby

button on the keypad. This blanks the screen for
15 minutes, but keeps the projector running. After 15 minutes, the
lamp goes out (the projector keeps running). To exit standby
mode, press the

standby

button again. (It takes several seconds for
the projection lamp to reach full power and project the image
again.)

To completely power off the projector, press the “O” side of the
power switch on the front of the pr ojector. If you want to turn the
projector back on immediately, you must allow about 30 seconds
for the lamp to cool. The lamp won’t light if it’s too hot.

22

USING THE PROJECTOR

This section describes how to use and make adjustments to the
projector. It also provides a reference to the keypad buttons and
the options available from the on-screen menus.

Basic Image Adjustment

1 Make sure you have powered up your equipment in the right

order (page 21).

2 If the image doesn’t display completely, adjust the height and

tilt of the projector (page 25), zoom the image (page 25), or
center the image by adjusting its horizontal or vertical posi­tion (page 36).

3 If the image is out of focus, rotate the lens to focus it (page 25).
4 If the image appears to shimmer or if it has blurry vertical

bars after you have adjusted the focus, turn Auto Image
(page 35) off and then back on to reset the automatic sync and
tracking. If that doesn’t clear up the image, adjust the sync
(page 36) and/or the tracking (page 36) manually.

5 If the colors don’t look right, adjust the brightness (page 27)

and tint (page 31).

Using the Remote Control

Point the remote control at the projection screen or at the front or
rear of the projector. The range for optimum operation is about
40 feet. If you point the remote at t he projection screen, th e dis­tance to the screen and back to the projector must be less than or
equal to 40 feet. For best results, point the remote directly at the
front or the rear of the projector.

The projector ships with a two-button remote. (A full-feature
Smart Remote with all the same buttons as the keypad is ava il­able separately; see “Optional Accessories” on page 52.) The
remote has a disk mouse and two mouse buttons, one on the top
of the remote and one on the bottom.

NOTE: If you can’t aim the
remote control at the projector so
that its signal is received
example, when using rear projec­tion

— purchase the optional

Smart Remote and connect it
directly to the projector with the
optional remote control cable. See
“Optional Accessories” on
page 52.

— for

23

Using the Projector

left mouse button

(on underside of remote)

F

21

IGURE

Remote control

disk mouse

right mouse button

NOTE: To control the computer’s

mouse from the projector’s remote

or keypad, you must connect the

mouse cable to the CablePro. See

page 10 for details.

Press anywhere on the edge of the disk mouse to move the cursor
on the screen. You can move the cursor at any angle by pressing
the corresponding edge of the disk. The mouse button on the top
of the remote simulates your computer’s right mouse button; the
button on the bottom simulates your computer’s left mouse but­ton.

If you are creating presentations in Microsoft® PowerPoint®, you
can use the remote’s mouse buttons to navigate through yo ur
presentation while in Slide Show mode. To configure PowerPoint
for this, choose Options from the Tools menu, click the View Tab,
de-select the “Popup Menu on Right Mouse Click” option in the
Slide Show section, then click OK. Then, when you’re in Power­Point’s Slide Show mode, a left click advances to the next slide
and a right click returns to the previous slide (other PowerPoint
modes are not affected).

24

Adjusting the Projector

To fo cus the image, rotate the focus ring (Figure 22) until the
image is clear. To zoom the image, rotate the zoom ring. This
adjusts the image size without affecting focus.

focus ring

elevator button

zoom ring

F

IGURE

22

Focus ring, zoom ring, and elevator button

The projector is equipped with a self-locking, quick-release eleva­tor foot and button (Figure 24) and a leveling knob (Figure 23).

F

23

IGURE

Leveling knob

25

Using the Projector

To raise the projector:

1 Press and hold the elevator button (Figure 22).
2 Raise the projector to the height you want, then release the

button to lock the elevator foot into position.

3 If necessary, use the leveling knob (Figure 23) to adjust the

angle of the projected image.

26

F

24

IGURE

Adjusting the height of the projector

To lower the projector:

1 Press the elevator button.
2 Lower the projector.
3 If necessary, use the leveling knob (Figure 23) to readjust the

angle of the projected image.

Using the Keypad Buttons

This section provides an alphabetical refer ence to the keypad but­tons.

lamp LED

power LED

F

25

IGURE

Keypad

Brightness

Adjusting the brightness lightens or darkens the image.

•

To darken the image, press

•

To lighten the image, press

Computer

When you have more than one source (computer and video) con­nected to the projector, select between them by pressing the but­ton for the source you want.

computer

Press

Freeze

freeze

The

to display your computer image presentation.

button halts, or “freezes” the pr ojected image. Use this
button to freeze a frame of video (the video continues to run but
the projected image is frozen). You can also freeze an image from
a computer source on the screen, allowing you to perform other
operations on the computer without the audience seeing them.

freeze

Press

Help

Press

again when you want the image to return to normal.

help

to display the on-screen help information.

27

Using the Projector

Menu

menu

Press

to open the on-screen menus. Press
close the menus. When you close the menus, the projector saves
any changes you made. For more information about the on­screen menus, see page 29.

Mute

Pressing the

mute

button silences the internal speaker. It also

silences any external speakers that are connected.
To return the volume to its previous setting, press

press either

Scribble

scribble

The

volume

button.

button activates on-screen annotation.

menu

mute

again to

again or

1 Press the

scribble

button. The cursor changes to a pencil.

2 Press the right disk mouse button (Figure 26 on page 30) to

display the color selector. Use the disk mouse to position the
cursor on the desired color, then press the left mouse button.
Press the right button again to close the color selector.

3 Use the disk mouse to move the pencil to where you want to

start the annotation.

4 Press the left mouse button. The cursor changes to an upright

pencil.

5 Use the disk mouse to draw your annotation. Press the left

mouse button to complete the annotation.

6 To exit Scribble, press the

scribble

button. The annotation is

automatically deleted (it cannot be saved).

28

Standby

When you press

standby

, the display and audio turn off and a
blank screen is displayed for 15 minutes. After 15 minutes, the
lamp goes out if you haven’t pressed

standby

again.

•

If you press

standby

again within 15 minutes, the projector

returns to normal operations immediately.

•

If you press

standby

again after 15 minutes, there is about a

30 second delay before the lamp turns back on.

Video

When you have more than one source (computer and video) con­nected to the projector, select between them by pressing the but­ton for the source you want.

video

Press

Volume

•

To increase the volume, press

•

To decrease the volume, press

to display the image from your video player.

Volume adjustment s are saved for each source you have con­nected.

Using the On-Screen Menus

The projector

has four on-screen menus that allow you to make
image adjustments and change a variety of settings. Most of these
adjustments aren’t available directly from the keypad.

NOTE: For models 3750-INT or
6750-INT: To use video input, an
optional video board must be
installed in the projector. Contact
Boxlight for more information.

To open the on-screen menus, press the
pad. Press

menu

again when you want to close the menus and

menu

button on the key-

save any changes.
To select a me nu, use the disk mouse on the keypad or remote to

move the cursor to the tab for the menu you want, then click
either mouse button.

29

Using the Projector

disk mouse

left mouse right mouse

button

F

26

IGURE

Disk mouse and mouse buttons on keypad

To change a menu setting, move the cursor to the setting you
want to change, then use one of the two mouse buttons to ma ke
changes. All changes are saved when you close the menus.

The status bar at the top of the menu display indicates the source
that is currently active (Computer or Video) and any peripherals
that are connected.

button

The status bar also contains a lamp hour counter that starts at
zero hours and counts each hour the lamp is in use. When the
counter reaches 2000 hours, the lamp monitor light turns on,
when it reaches 2050 hours, the lamp switches off completely. See
“Replacing the Projection Lamp” on page 41 for details.

F

27

IGURE

On-screen menu status bar

30

Display Menu Functions

F

28

IGURE

Display menu

Brightness

Adjusting the brightness changes the intensity of the image.

•

Press the left mouse button to darken the image.

•

Press the right mouse button to lighten the image.

Contrast

The contrast controls the degree of differen ce between the lightest
and darkest parts of the picture. Adjusting the contrast changes
the amount of black and white in the image.

NOTE: Changing the brightness
using the menu is the same as
changing it using the keypad.

•

Press the left mouse button to decrease the contrast.

•

Press the right mouse button to increase the contrast, making
the blacks appear blacker and the whites appear whiter.

Tint

The tint adjusts the red-green color balance in the projected
image. Changing the Tint setting has no effect on PAL or SECAM
video sources.

•

Press the left mouse button to increase the amount of green in
the image.

•

Press the right mouse button to increase the amount of red in
the image.

31

Using the Projector

Color

The color setting adjusts a video image from black and white to
fully saturated color.

•

Press the left mouse button to decrease the amount of color in
the image.

•

Press the right mouse button to increase the amount of color in
the image.

Blank Screen

Blank Screen determines what color is displayed wh en there is no
active source and when the projector is in standby. Click the but­ton to toggle between the two options.

Reset All

Click either mouse button to reset all the options (except Lan­guage, Video Standard, Ceiling, and Rear Projection) in all the
menus to their original settings. This also returns Freeze and
Mute to their default (off) settings.

Menu Position

This lets you move the menu to various locations on the screen,
allowing you to view different parts of the image while making
adjustments. The default position is the center of the screen. Click
Menu Position to move the menu to the upper-left corner; click it
again to move it to upper-right, then lower right, then lower left,
then center again.

32

Audio Menu Functions

F

IGURE

Audio menu

Volume

•

Press the left mouse button to decrease the volume.

•

Press the right mouse button to increase the volume.

Volume adjustments you make are saved for each source.

Balance

The balance setting controls the balance between the left and
right external speakers. It appears gray and won’t highlight if
you haven’t connected external speakers. Balance

applies to all

sources you have connected.

29

NOTE: Changing the volume
from the menu is the same as
changing it using the keypad.

•

Press the left mouse button to increase the amount of sound
coming from t h e left external speaker.

•

Press the right mouse button to increase the amount of sound
coming from the right external speaker.

33

Using the Projector

Fade

The fade setting controls the balance between the internal and
external speakers. The setting appears gray and won’t highlight if
external speakers aren’t connected.

•

Press the left mouse button to increase the amount of sound
coming from the internal speaker.

•

Press the right mouse button to increase the amount of sound
coming from the external speakers.

Treble

The treble setting controls the higher frequencies of your audio
source.

•

Press the left mouse button to decrease the treble.

NO TE: The Treble and Bass

settings apply only to the

projector’s internal speaker.

External speakers typically have

their own tone controls.

•

Press the right mouse button to increase the treble.

Bass

The bass setting controls the lower frequencies of your audio
source.

•

Press the left mouse button to decrease the bass.

34

•

Press the right mouse button to increase the bass.

Image Menu Functions

F

30

IGURE

Image menu

Auto Image

The projector automatically adjust s tracking, signal synchroniza­tion and vertical and horizontal position for most computers. If
you want to adjust these features manually, you must turn off

Auto Image

Auto Resize

Auto Resize

The
images.

first by clicking it.

setting is available only for computer-generated

Auto Resize

automatically resizes the image by scaling it

up or down.

NOTE: Some screen savers inter­fere with the operation of Auto
Image. If you’re experiencing prob­lems, try turning your screen saver
off, then turning Auto Image off
and back on.

Auto Resize

When
image to the screen. If you turn

is on, the projector makes the best fit of the

Auto Resize

off (by clicking it), the

image may be either cropped or too small for the screen.

35

Using the Projector

Manual Sync

The projector adjusts signal synchronization automatically for
most computers. But if the projected computer image looks fuzzy
or streaked, try turning

Auto Image

image still looks bad, try adjusting the signal synchronization
manually as described below.

off then back on again. If the

NO TE: The Manual Sync,

Manual Tracking, Horiz.

Position and Vert. Position

buttons are available only for

computer sources. The projector

sets these options automatically

for a video source.

1 Click the

Auto Image

button to turn Auto Image off.

2 Press the left or right mouse buttons repeatedly until the

image is sharp and free of streaks.

Manual T racking

The tracking function adjusts the projector to match the video
signal from your computer. The projector usually adjusts the
tracking automatically when you connect your computer. How­ever , if the display shows evenly spaced, fuzzy, vertical lines or if
the projected image is too wide or too narrow for the screen, try
turning

Auto Image

off then back on again. If the image is still

bad, try adjusting the tracking manually as described below.

1 Click the

Auto Image

button to turn Auto Image off.

2 Press the left or right mouse buttons repeatedly until the

fuzzy vertical bars are gone.

Horiz. Position

Follow these steps to manually adj ust the horizontal position.

1 Click the

Auto Image

button to turn Auto Image off.

2 Press the left mouse button to move the image right; press the

right mouse button to move the image le ft.

36

Positioning adjustments are saved when you power off the pro­jector.

Vert. Position

Follow these steps to manually adj ust the vertical position.

1 Click the

Auto Image

button to turn Auto Image off.

2 Press the left mouse button to move the image down; press

the right mouse button to move the image up.

Positioning adjustments are saved when you power off the pro­jector.

Controls Menu Functions

F

31

IGURE

Controls menu

NOTE: For models 3750-INT or
6750-INT: To use video input, an
optional video board must be
installed in the projector. Contact
Boxlight for more information.

Video Standard

Auto

When

is on, the projector attempts to pick the video stan­dard (NTSC, NTSC 4.43, PAL, PAL-M, PAL-N, or SECAM) auto­matically based on the input signal it receives. (The video
standard options may vary depending on your region of the
world.) The input signals for SECAM, PAL-M, and PAL-N video
cannot be automatically detected, therefore they must be chosen
manually. If the projector is unable to detect the standard, the col­ors might not lo ok ri g ht or the image might appear “torn.” If t h is
happens, manually select a standard by clicking the button and
cycling through the standards.

Language

Y ou can display the on-screen menus in English, French, German,
and Spanish. The default is English.

NOTE: If you already know the
video standard used in your geo­graphical area, it’s often best to
manually select it.

37

Using the Projector

•

Click the button for the language you want. The menus redraw
immediately.

Ceiling

•

Click either mouse button to turn the image upside down for

NO TE: To order the Ceiling

Mount, refer to “Optional

Accessories” on page 52.

ceiling-mounted projection.

Rear Projection

When you select

Rear Projection

so you can project from behind a translucent sc reen.

Default Source

Default Source toggles between Computer and Video. This deter­mines which source the projector checks first for active video
during power-up. Click the button to toggle between the options.

Auto Source Select

This setting toggles between On and Off. When this feature is Off,
the projector defaults to the source selected in Default Source. To
display another source, you must manually select one by press­ing the

computer

or

video

button on the keypad. When this fea­ture is On, the projector automatically finds the active source,
checking the default source first. Click the button to toggle
between the options.

, the projector reverses the image

38

MAINTENANCE & TROUBLESHOOTING

This section describes how to:

•

clean the lens

•

clean the fan intake filter

•

replace the projection lamp

•

replace the batteries in the remote control

•

use the Kensington lock feature

•

troubleshoot the projector

Cleaning the Lens

Follow these steps to clean the projection lens:

1 Apply a non-abrasive camera lens cleaner to a soft, dry cloth.

•

Avoid using an excessive amount of cleaner.

•

Abrasive cleaners, solvents or other harsh chemicals might
scratch the lens.

2 Lightly wipe the cleaning cloth over the lens.
3 If you don’t intend to use the projector immediately, replace

the lens cap.

Cleaning the Fan Intake Filter

The fan intake filter on the bottom of the projector catches dust
and particles in the air. If the filter becomes clogged, the projector
does not cool properly and may malfunction. To prevent this,
clean the filter after every 100 hours of use.

1 Turn off the power and unplug the power cord.
2 Remove the filter door.

•

Carefully place a screwdriver against the indented part of
the filter door and lift out.

39

Maintenance & Troubleshooting

32

F

IGURE

Removing the filter door

3 Clean the filter.

40

•

Use a vacuum cleaner set on low power to remove the dust
and dirt.

F

33

IGURE

Cleaning the air filter

4 Replace the filter.

•

First, insert the side with the tabs, then press the other end
in place.

Replacing the Projection Lamp

The lamp hour counter on the status bar at the top of the menus
counts the number of hours the lamp has been in use. After 2000

hours of use, the lamp monitor LED, ma rked on the top of the
projector near the keypad, lights. After 2050 hours, the lamp
switches off completely and must be replaced. You can order new
lamp modules from Boxlight. See “Accessories” on page 51 for
information.

Follow these steps to replace the projection lamp:

1 Turn off the projector and unplug the power cord.
2 Wait 30 minutes to allow it to cool thoroughly.
3 Using a small, flat-blade screwdriver, remove the screw on the

outside of the lamp door (Figure 34).

4 Pull the lamp cover up and remove it.

WARNING: To avoid burns,
allow the projector to cool for at
least 30 minutes before you open
the lamp module door. Never
extract the lamp module while the
lamp is operating.

F

IGURE

Removing the lamp module door

5 Loosen the two non-removable screws on the outside of the

module.

6 Remove the module (Figure 35).

34

CAUTION: Never operate the
projector with the lamp cover open
or removed. This disrupts the air
flow and causes the projector to
overheat.

41

Maintenance & Troubleshooting

F

35

IGURE

Removing the lamp module

7 Align the new lamp module in the correct direction.

WARNING: Do not drop the

lamp module or touch the glass

bulb! The glass may shatter and

cause injury.

8 Gently push the module in as far as it goes (Figu re 36).
9 Tighten the screws on the outside of the module.

42

F

36

IGURE

Installing a new lamp module

10 Reposition the lamp cover.

11 Replace the screw and tighten it.
12 Plug in the power cord and turn the projector back on. The

lamp monitor light and lamp hour counter in the Status bar on
the menus are automatically reset.

Replacing the Batteries in the Remote Control

The life of the batteries depends on how often and how long you
use the remote. Symptoms of low battery charge include erratic
responses when using the remote and a reduced range of opera­tion.

Follow these steps to replace the batteries:

1 Turn the remote face down in your hand.
2 Slide the battery cover off the end of the re mot e by pressing

on it with the heel of your hand.

3 Remove the old batteries.
4 Install two new AAA alkaline batteries. Make sure you install

each in the correct direction.

5 Slide the battery cover back on the remote.

Using the Kensington Lock

The projector has a Kensington Security Standard connector for
use with a Kensington MicroSaver Security System (Figure 37).
Refer to the information that came with the Kensington System
for instructions on how to use it to secure the projector.

F

IGURE

Installing the Kensington lock

37

43

Maintenance & Troubleshooting

Troubleshooting

If you’re experiencing trouble with the projector, follow these
steps to make sure everything is properly connected before you
call Technical Support for assistance.

1 Check cable connections. Verify that all computer, CablePro

and power cables are properly connected.

2 Verify that all power is switched on.
3 Verify that the projector has not been switched off with the

standby

button on the keypad.

4 If the projector still doesn’t display an image, restart the com-

puter.

5 If the problem still exists, unplug the projector from the com-

NO TE: Macintosh computers

require a specific power-up

sequence: the projector must be

turned on before you turn on the

computer.

puter and check the computer monitor’s display. The maxi­mum resolution that the 3750 can display is 1024x768 pixels,
preferably 800x600 ; the maximu m resolu tion that th e 6750 can
display is 1280x1 024 pixel s, pr eferabl y 1024 x768. Th e pr oblem
might be with the graphics controller in your computer rather
than with the projector. When you reconnect the projector,
remember to turn the computer and monitor off before you
power up the projector. Power the equipment back up in this
order: projector, monitor, computer.

44

6 If you’re using a laptop computer and it is not displaying your

presentation, make sure you have activated the computer ’s
external video output. Most laptop computers do not auto­matically turn on their external video port when a secondary
display device such as a projector is connected. Refer to
page 53 for more information.

7 If the problem still exists, read through the problems and solu-

tions in this chapter.

Solutions to Common Problems

Problem: Nothing on projection screen

•

Make sure that the power cord is properly connected to a func­tional AC electrical outlet. Make sure that the power cord is
also properly connected to the projector.

•

If the projector is plugged into a power strip, make sure the
power strip is turned on.

•

Make sure you have removed the lens cap from the projection
lens at the front of the projector.

•

Make sure the projector is switched on.

•

Check the projector’s lamp to ensure that it is securely con­nected in the lamp module. See “Replacing the Projection
Lamp” on page 41.

•

Make sure that the CablePro and the cables do not have any
bent pins. Check the power cord for bent pins also.

Problem: Color or text not being projected

•

You might need to adjust the brightness up or down until the
text is visible. Refer to “Brightness” on page 27 for more infor­mation.

•

Verify that the appropriate input source is selected. See “Com­puter” on page 27 or “Video” on page 29.

Problem: The screen resolution is not right

•

Make sure the computer’s graphics card is set for a resolution
of no greater than 1024x768 for the 3750, 1280x1024 for the

6750.

Problem: Image isn’t centered on the screen

•

Reposition the image. Refer to “Horiz. Position” on page 36
and “Vert. Position” on page 36.

•

If you’re using an extension cable between the CablePro and
the projector, make sure it’s Boxlight-approved.

Problem: Only the start-up screen displays

•

Verify that the cables are connected correctly. Check to see that
the CablePro computer cable is correctly connected to the mon­itor connector on the computer (this is the connector where

45

Maintenance & Troubleshooting

your monitor cable usually goes.) See page 8 through page 17
for connection procedures.

•

Verify that the proper input source is connected. See “Com­puter” on page 27 or “Video” on page 29.

•

You might need to turn everything off and power up the equip­ment again. Make sure you power up in this order: projector,
computer monitor, computer. It is especially importan t that
you follow this sequence for Macintosh computers.

•

Make sure your computer’s graphics board is installed and
configured correctly.

If you’re using Windows 3.x:

1 In the Windows Program Manager, double-click the Win-

dows Setup icon in the Main program group.

2 Verify that the Display s e tting is 1024x768 or less for the

3750, 1280x1024 or less for the 6750.

If you’re using Windows 95:

46

1 Open “My Computer” icon, the Control Panel folder and

then the Display icon.

2 Click the Settings tab.
3 Verify that the Desktop area is set to 1024x768 or less for

the 3750, 1280x1024 or less for the 6750.

Also check the following:

•

Does your computer have a compatible graphics board? The
projector isn’t CGA or EGA compatible.

•

Is your computer ’s g raphics board turned on? This is espe­cially true for laptop computers. See “Portable and Laptop
Activation Chart” on page 53.

Problem: Image is too wide or narrow for screen

•

You might need to manually adjust the tracking to reduce or
enlarge the projected image. Refer to “Manual Tracking” on
page 36.

•

Adjust the resolution of your monitor if it’s greater than
1024x768 pixels for the 3750 or 1280x1024 for the 6750. Only
these resolutions at 75 Hz or less will display on the projector.

Problem: Image is out of focus

•

Turn the projection lens to focus the image.

•

Make sure the projection screen is at least 4 feet (1.2m) from the
projector .

•

Make sure the projector is turned off, then check the projection
lens to see if it needs cleaning.

Problem: Image and menus are reversed left to right

•

Rear projection mode is probably turned o n. Switch back to for­ward projection from the Controls menu. The image should
immediately return to forward projection. See “Rear Projec­tion” on page 38.

Problem: Image and menus are upside down

•

Ceiling mode is probably turned on. Turn off the mode from
the Controls menu. The image should immediately return to
forward projection. See “Ceiling” on page 38.

Problem: the projector displays vertical lines, “bleeding” or spots

•

Adjust the brightness. See “Brightness” on page 27.

•

Make sure the projector is turned off, then check the projection
lens to see if it needs cleaning.

Problem: no sound

•

Press the mute button.

•

Adjust volume.

•

Verify audio/input connections.

•

Adjust audio source.

Problem: Image is “noisy” or streaked

Try these steps in this order.

1

Deactivate the screen saver on your computer.
Turn

Auto Image

off and then back on again. See “Auto

2

Image” on page 35.

47

Maintenance & Troubleshooting

3Adjust the synchronization and tracking manually to find an

optimal setting. See “Manua l Sync” on page 36 and “Manual
Trac king” on page 36.

•

If you’re using an extension cable between the CablePro and
the projector, make sure it’s Boxlight-approved.

•

The problem could be with your computer ’s graphics board. If
possible, connect a different computer.

Problem: Projected colors don’t match the computer or video
player’s col ors

•

Adjust the brightness, tint and/or contrast from the Display
menu. Just as there are differences in the displays of different
monitors, there are often differences between the computer
image and the projected image. See “Brightness” on page 27,
“Tint” on page 31 and “Contrast” on page 31.

Problem: Lamp seems to be getting dimmer

•

The lamp begins to lose brightness when it has been in use for a
long time. Replace the lamp as described in “Replacing the Pro­jection Lamp” on page 41.

48

Problem: Lamp shuts off

•

A minor power surge may cause the lamp to shut off. Turn the
projector off, wait at least 30 seconds, then turn it back on.

Problem: Remote not operating correctly

•

You might need to replace the batteries. See “Replacing the Bat­teries in the Remote Control” on page 43.

•

Make sure you’re pointing the remote either at the back or front
of the projector, or at the projection screen.

•

Make sure the remote is within its operating range of 40 feet.

APPENDIX

Specifications

The Boxlight 3750 and 6750 must be operated and stored within
the temperature and humidity ranges specified.

Temp e r a ture

Operating
Non-operating

Humidity

Operating and non-oper. 5% to 95% relative humidity, non-condensing

Dimensions

6.0 x 15.3 x 11.7 inches (15.3 x 38.8 x 29.8 cm)

Weight

12.2 lbs. (5.5 kg) unpacked

Altitude

Operating 0 to 10,000 feet (3048 meters)
Non-operating 0 to 40,000 feet (12,192 meters)

10 C to 40

-20 to 70

°

C

°

C

Audio Output

Frequency Response 10 Hz - 20 KHz
Output Impedance 1.2 K ohm nominal
Output Voltage 2 Vrms maximum (open circuit)
Connector Type red and white RCA jacks

Optics

Focus Range 3.25 - 32.5 feet (1-10 m)

Lamp

Type 150-watt UHE

49

Appendix

Remote Control

Battery Two (2) AAA alkaline cells

Input Power Requirements

100-120/220-240V, 5.0/3.0A, 50/60 Hz.

Video Audio Input

Input Impedance 5K ohm DC coupled
Maximum Input Voltage (L

+ RIN)

IN

L

or RIN < 2.0 Vrms for THD ≤ 0.3%

IN

< 4.5 V for THD ≤ 0.3%

PEAK

Sensitivity 100 mV at 1 KHz for 88 dB SPL at 1 meter
Connector Type RCA jack

CablePro Audio Input

Input Impedance 10K ohm nominal, AC coupled
Maximum Input Voltage (L

+ RIN)

IN

L

or RIN < 2.0 Vrms for THD ≤ 0.3%

IN

< 4.5 V for THD ≤ 0.3%

PEAK

Sensitivity 100 mV at 1 KHz for 88 dB SPL at 1 meter
Connector Type 3.5 mm (1/8 inch) stereo phone jack

50

Accessories

Standard Accessories
(ship with the projector)

Boxlight 3750/6750 Quick Start card
Boxlight 3750/6750 User’s Guide

Shipping Box
CablePro and Cables

CablePro Audio Cable
CablePro Computer Cable
CablePro Mouse Cable
CablePro SGI/SUN Workstation Cables

(Boxlight 6750 only)
Projection Lamp Module
Lens Cap
Audio/Video Cable
Remote Control and 2 Batteries

Power Cords (one ships with projector, type depends on country)

North American Power Cord
Australian Power Cord
UK Power Cord
European Power Cord
Danish Power Cord
Swiss Power Cord

NOTE: Use only Boxlight­approved accessories. Other prod­ucts have not been tested with the
projector.

51

Appendix

Optional Accessories

Soft Case
ATA Shipping Case
CablePro Lite, 6.5 ft (2 m)

Mac Adapter for CablePro Lite

CablePro Extension Cable, non-plenum rated,

60.7 ft (18.5 m)
CablePro Extension Cable, plenum-rated,

60.7 ft (18.5m)
Full-Feature Smart Remote Control

Remote Cable
Kensington MicroSaver Security System
S-Video Cable
Ceiling Mount

52

Portable and Laptop Activation Chart

Many laptop computers do not automatically turn on their exter­nal video port when a secondary display device such as a projec­tor is connected. Activation commands for some laptop
computers are listed in the following table. (If your computer is
not listed or the given command does not work, refer to the com­puter’s documentation for the appropriate command.) On some
laptops, the activation function key is labeled with an icon, for

example or the text CRT/LCD.

Key command to

Computer

Acer Ctrl-Alt-Esc (for setup) Ctrl-Alt-Esc (for setup)
AST* ** FN-D or Ctrl-D FN-D or Ctrl-D

Advanced Logic
Research

Altima Shift-Ctrl-Alt-C Shift-Ctrl-Alt-L

Ambra** FN-F12 FN-F12

Amrel* ** setup menu setup menu

Apple see Mac Portable and Mac PowerBook
Aspen automatic automatic
BCC* automatic reboot computer
Bondwell LCD or CR T options after

Chaplet** setup screen setup screen

Commax Ctrl-Alt-#6 Ctrl-Alt-#5

activate port

Ctrl-FN-D Ctrl-FN-D
FN-F5 FN-F5
type from A:/IVG A/CRT type from A:/IVGA/CRT
FN-F12 FN-F12
Ctrl-Alt-V Ctrl-Alt-V

setup VGA/
Conf.Simulscan

FN-F5 FN-F5
F2/Choose Option/F5 F2/Choose Option/F5

Shift-Ctrl-D Shift-Ctrl-D

bootup

FN-F6 FN-F6
FN-F4 FN-F4

Key command to
de-activate port

setup VGA/
Conf.Simulscan

reboot for LCD or CRT
options to appear

NOTE: Often, pressing the key
commands once activates the
external video port, pressing it
again activates both the external
and internal ports, and pressing it
a third time activates the internal
port. Refer to your computer’s doc­umentation for details on your spe­cific model.

53

Appendix

Key command to

Computer

Compaq* ** Ctrl-Alt-< Ctrl-Alt->

Compuadd* ** automatic automatic

Data General Ctrl-Alt-Command Ctrl-Alt-Command
Data General

Walkabout
Datavue Ctrl-Shift-M Ctrl-Shift-M
Dell** Ctrl-Alt-< Ctrl-Alt->

Digital* automatic reboot

Dolch dip switch to CRT dip switch to LCD
Epson dip switch to CRT dip switch to LCD
Everex* setup screen option setup screen option
For-A Ctrl-Alt-Shift-C Ctrl-Shift-Alt-L
Gateway FN-F1/FN-F1 again simul-

Grid* ** FN-F2, choose auto or

Hyundai setup screen option setup screen option
IBM 970* automatic warm reboot

activate port

FN-F4 FN-F4
automatic automatic
mode/? (for setup option) mode/? (for setup option)

Alt-F for screen setup
option

2 CRT/X at DOS prompt reboot

Ctrl-Alt-F10 Ctrl-Alt-F10
FN-F8 (CRT/LCD) FN-F8
FN-D FN-D
FN-F12 FN-F12

FN-F2 FN-F2

taneous

simultaneous
Ctrl-Alt-Tab Ctrl-Alt-Tab

Key command to
de-activate port

Alt-F for screen setup
option

FN-F1

FN-F2

54

Key command to

Computer

IBM ThinkPad** reboot, enter setup menu FN-F2

Kaypro boot up, monitor plugged inunplug monitor

Kris Tech FN-F8 FN-F8
Mac Portable

100
Mac PowerBook
140, 145, 150,

170
160, 165, 180,

520, 540, 5300

210, 230, 250,
270, 280, 2300

Magitronic FN-F4 FN-F4
Mastersport FN-F2 FN-F1
Micro Express* automatic warm reboot
Microslate* automatic warm reboot
Mitsubishi SW2 On-Off-Off-Off SW2 Off-On-On-On
NCR setup screen option setup screen option
NEC* ** setup screen option setup screen option

Olivetti* automatic automatic

activate port

FN-F7, select choice fro m
setup menu

FN-F1, select choice
FN-F5, select choice
PS/2 SC select choice

(CRT, LCD, etc.)

no video port: not compatible

no video port: requires a 3rd-party interface

Control Panel folder,
PowerBook Display
folder; Activate Video
Mirroring

requires Apple Docking Station or Mini Dock

CRT at the DOS prompt LCD at the DOS prompt
FN-F31 FN-F3

FN-O/* FN-O/*
FN- | | FN- | |

Key command to
de-activate port

warm reboot

55

Appendix

Key command to

Computer

Packard Bell** FN-F2 FN-F2

Panasonic FN-F2 FN-F2
Samsung* setup screen option setup screen option
Sanyo setup screen option setup screen option
Sharp dip switch to CRT dip switch to LCD
Sun SPARC-

Dataview
Tandy** Ctrl-Alt-Insert Ctrl-Alt-Insert

Texas Instru­ments*

Top-Link* ** setup screen option setup screen option

Toshiba* ** Ctrl- A l t -End Ctrl-Al t -H ome

Twinhead* FN-F7 FN-F7

WinBook Ctrl-Alt-F10 Ctrl-Alt-F10
Wyse software driven software driven
Zenith** FN-F10 FN -F10

activate port

Ctrl-Alt-< Ctrl-Alt->

Ctrl-Shift-M Ctr l-Shift-M

setup screen option setup screen option
setup screen option setup screen option

FN-F6 FN-F6

FN-End FN-Home
FN-F5 FN-F5
setup screen option setup screen option

FN-F5 FN-F5
Automatic Automatic

FN-F2 FN-F2
FN-F1 FN-F1

Key command to
de-activate port

56

* These manufacturers have models that automatically send video

to the external CRT port when some type of display device is
attached.

** These manufacturers offer more than one key command depend-

ing on the computer model.

Using Video Mirroring with a PowerBook Computer

When you turn video mirroring on (called SimulScan in newer
PowerBooks-see below), the projector displays the same informa­tion that appears on your PowerBook’s built-in screen. When
video mirroring is off, the projector acts like a separate display.

To turn on video mirroring for the first time:

1 Open the Monitors control panel; click on Monitor 2.
2 Set the number of colors you want.
3 Open the Control Strip; click on the monitor icon.
4 Select “Turn Video Mirroring On.”

Now you can turn video mirroring on and off from the Control
Strip without having to open the Monitors control panel again.

When using video mirroring and high color graphics such as
slide shows, the projected image occasionally might turn black
and white. If this happens, perform the following steps:

1 Turn off video mirroring.
2 Open the Monitors control panel.
3 Move the white menu bar to Monitor 2 to set the projector as

the primary monitor.

4 Restart the PowerBook.

Using SimulScan

Some newer PowerBooks display images on an external monitor
or projector differently than previous ones. When using
SimulScan, the projector displays the same information that
appears on your PowerBook

To select SimulScan:

1 Open the Control Panel, then double-click Monitors and

Sound.

2 In the Resolution list, choose the SimulScan mode, then click

OK.

3 If this changes your display settings, a dial og box appears.

Click OK to confirm the change.

57

Appendix

Projected Image Size

Use the chart below and the tables on the next page to help you
determine projected image sizes.

58

F

38

IGURE

Projected image size

Table 1:

Image Size, Width and Height for Lens at Maximum

Image Size

Distance to

Screen (feet)

4362922
10 91 73 55
15 137 110 82
20 182 146 109
25 228 182 137
30 274 219 164
35 319 255 191
40 365 292 219

Image Size, Width and Height for Lens at

Distance to

Screen (feet)

4 282217
10 71 57 43
15 106 85 64
20 142 114 85
25 177 142 106
30 212 170 127
35 248 198 149
40 283 226 170

Diagonal

(inches)

Minimum Image Size

Maximum

Diagonal

(inches)

Width

(inches)

Table 2:

Maximum

Width

(inches)

Height

(inches)

Maximum

Height

(inches)

59

INDEX

A

accessories, ordering 51, 52
activation comm ands for laptop com-

puters 53

adjusting

balance 33
bass 34
brightness 27, 31
color 32
contrast 31
fade 34
Menu Position 32
tint 31
treble 34

volume 29, 33
adjusting the height of the projector 25
altitude limits 49
annotating 28
assistance. See Technical Support
Audio menu 33
Audio menu options

Balance 3 3

Bass 34

Fade 34

Treble 34

Volume 33
Auto Source Select 38

B

balance, adjusting 33
bass, adjusting 34
Blank Screen 32
Boxlight 3750/6750

cases 52
ceiling mounted 7, 38
hot surfaces iv
not working 44
project fr om be hi nd the screen 38
setting up 7
specifications 49
turning off 22
turning on 21
ventilation and overheating iv

voiding the warranty iv
Brightness buttons 27
brightness, adjusting 27, 31
buttons on k e y p ad

Brightness 27

Computer 27

Freeze 27

Help 27

Menu 28

Mute 28

Scribble 28

Standby 29

Video 29

Volume 29

61

Index

62

C

cables

A/V 19, 51
CablePro 3, 8–18, 51
CablePro extension 52
composite video 19
extension 7, 52
ordering 51, 52
power iii, 51
remote contro l 52
S-video 19, 52

CablePro

cables 3, 8–18, 51
connecting to equipment 10
connecting to the projector 8
extension cable 52

selecting connect or s 8
CablePro Lite, ordering 52
ceiling-moun ted p roj e ction 38, 52
cleaning the projection lens 39
color, adjusting 32
colors

don’t match monitor colors 48

not displayed 45
compatibility

IBM-compatible 2

Macintosh 2
composite video cable

connecting 19

ordering (A/V cable) 51
Computer button 27
computers, compatible 2
connecting

Apple PowerBook 15–16

external speakers 21

IBM-compatible desktop

computer 13–14
IBM-compatible laptop 11–12
Macintosh 17–18
power cord 21
video player 19–20

connector panel

audio out 10

contrast, adjusting 31
Controls menu 37

Controls menu options

Auto Source Select 38
Ceiling 38
Default Source 38
Language 37
Rear Projection 38
Video Standard 37

cords. See cables

D

Default Source 38
Display menu 31
Display menu options

Blank Screen 32
Brightness 31
Color 32
Contrast 31
Menu Position 32
Reset All 32
Tint 31

displaying

on-screen help informa tion 27
on-screen menus 28

E

extension cable 7, 52
external speakers, connecting 21

F

fade, adjusting 34
filter, cleaning 39
Freeze button 27
freezing the display 27
fuzzy lines 23, 36

H

Help button 27
hot surfaces iv

I

IBM-compatible compu t er s

compatibilit y 2
connecting 11–14

icons

on CablePro 8–18
on projector labels iii
on the projector 4, 10

image

adjusting 21, 23
centering 23, 36
colors don’t match computer’s 48
focusing 25
fuzzy lines 23, 36
has lines or spots 47
not centered 45
not displayed 45
out of focus 47
quality 45–48
resolution 1
reversed 38, 47
size 7, 58
streaked 47
too dark or too light 27

too wide or too narrow 23, 46
Image menu 35
Image menu options

Auto Image 35

Auto Resize 35

Horiz. Position 36

Manual Sync 36

Manual Tracking 36

Vert. Position 36
intake filter, cleaning 39

K

Kensington lock 43, 52

L

labels on projector iii
lamp

LED 41
ordering 51
overheating iv
replacing 41
safety iii–iv

turns off unexpectedly 48
lamp hour count e r 30
language, selecting for menus 37
laptop computers

activation sequence to allow

secondary display 53
connecting IBM-compatible 11
connecting PowerBook 15

lens

cap 51
cleaning 39
safety iii

leveling the pro jector 25

M

Macintosh computers

compatibilit y 2
connecting desktop

models 17–18
connecting PowerBooks 15–16

Menu 28
Menu button 28, 29
Menu Position 32
menus. See on-screen menus
monitor, projected colors don’t match

48

Mute button 28

N

NTSC video 37

63

Index

64

O

on-screen menus

Audio menu 33
changing language of 37
Controls menu 37
Display menu 31
displaying 29
Image menu 35
making changes to menu

functions 30

removing from the screen 29

P

PAL video 31, 37
power cord

connecting 21
grounding iv
ordering 51

safety iii
power source, safety ii i
power strip 21
power switch 22
power up sequence 21, 46
PowerBook, conn e ct ing 15
project from behind the screen 38

R

rear projection 38
remote contro l

not working 48

ordering 51

replacing t h e batteries 43

specifications 50

using 23
repair. See Technical Support
replacing

projection lamp module 41
re-positioning the image on the

screen 36
resetting adjustments 32
resolution 1

S

safety guidelines iii–iv
Scribble button 28

SECAM video 31, 37
security feature 43
service. See Technical Support
SimulScan, using with PowerBooks 57
speakers

external 21, 28
internal 28

muting 28
specifications 49
Standby button 29
start-up screen 21, 45
S-video

connecting 19

ordering cable 52

T

Technical Support

things to try before you call 44

voiding the warra nty iv
temperature limits 49
text not visible 45
tint, adjusting 31
treble, adjusting 34
troubleshooting 44
turning off

projector 22

sound 28
turning on the projector 21

U

using the remote cont rol 23

V

vertical lines displayed 36, 47
Video button 29
video mirroring on a PowerBook 15,

57
video standards 31, 37
volume

adjusting 29, 33
muting 28

Volume buttons 29

W

warranty iv, 5

LIMITED WARRANTY

Boxlight Corporation (“Boxlight”) warrants that each Boxlight 3750/6750 (“the Product”) sold hereunder will conform to
and function in accordance with the written specifications of Boxlight. Said limited warranty shall apply only to the first
person or entity that purch ase s t h e Prod uct for personal or business use and not for the purpose of distri bution or resale.
The product may contain recycled components that are in new condition. Said warranty shall continue for a period of one
(1) year from the date of such purchase. The standard limited warranty excludes the lamps in projectors after 90 days. Box­light does not warrant that the Product will meet the specific requirements of the first person or entity that purchases the
Product for personal or business use. Boxlight’s liability for the breach of the foregoing limited warranty is limited to the
repair or replacement of the Product or refund of the purchase price of the Product, at Boxlight’s sole option. To exercise
the Purchaser ’s rights under the foregoing warrant y, the Product must be returned at the Purchaser’s sole cost and
expense, to Boxlight or to any authorized Boxlight service center provided, however, that the Product must be accompa­nied by a written letter explaining the problem and which includes (i) proof of date of purchase; (ii) the dealer’s name; and
(iii) the model and serial number of the Product. A return authorizatio n number, issued by the Boxlight customer service
department, must also be clearly displayed on the outside of the shipping carton containing the Product.

WARRANTY LIMITATION AND EXCLUSION

Boxlight shall have no further obligation under the foregoing limited warranty if the Product has been damaged due to
abuse, misuse, neglect, accident, unusual physical or electrical stress, unauthorized modifications, tampering, alterations,
or service other than by Boxlight or its authorized agents, causes other than from ordinary use or failure to properly use the
Product in the applicat ion for which said Product is intended.

DISCLAIMER OF UNSTATED WARRANTIES

THE WARRANTY PRINTED ABOVE IS THE ONLY WARRANTY APPLICABLE TO THIS PURCHASE. ALL OTHER
WAR RANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER­CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. THERE ARE NO WARRANTIES
THAT EXTEND BEYOND THE FACE HEREOF AND THE FOREGOING WARRANTY SHALL NOT BE EXTENDED,
ALTERED OR VARIED EXCEPT BY WRITTEN INSTRUMENT SIGNED BY BOXLIGHT.

LIMITATION OF LIABILITY

IT IS UNDERSTOOD AND AGREED THAT BOXLIGHT’S LIABILITY WHETHER IN CONTRACT, IN TORT, UNDER
ANY WARRANTY, IN NEGLIGENCE OR OTHERWISE SHALL NOT EXCEED THE RETURN OF THE AMOUNT OF
THE PURCHASE PRICE PAID BY PURCHASER AND UNDER NO CIRCUMSTANCES SHALL BOXLIGHT BE LIABLE

FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR LOST PROFITS,
INGS. THE PRICE STATED FOR THE PRODUCT IS A CONSIDERATION IN LIMITING BOXLIGHT’S LIABILITY. NO
ACTION, REGARDLESS OF FORM, ARISING OUT OF THE AGREEMENT TO PURCHASE THE PRODUCT MAY BE
BROUGHT BY PURCHASER MORE THAN ONE YEAR AFTER THE CAUSE OF ACTION HAS ACCRUED.

LOST REVENUES OR LOST SAV-

Part Number 010-0172-00