• DLP, BrilliantColor and DynamicBlack are trademarks of Texas Instruments.
• IBM is a trademark or registered trademark of International Business Machines Corpora-
tion.
•Macintosh, Mac OS X and PowerBook are trademarks of Apple, Inc., registered in the
U.S. and other countries.
•Windows, Windows 98, Windows Me, Windows XP or Windows 2000 are trademarks or
registered trademarks of Microsoft Corporation.
• VESA is a registered trademark of Video Electronics Standards Association.
• Trademark PJLink is a trademark applied for trademark rights in Japan, the United States
of America and other countries and areas.
•Other product and company names mentioned in this user's manual may be the trade-
marks or registered trademarks of their respective holders.
Notes
(1) The contents of this user’s manual may not be reprinted in part or whole without permis-
sion.
(2) The contents of this user’s manual are subject to change without notice.
(3) Great care has been taken in the preparation of this user’s manual; however, should you
notice any questionable points, errors or omissions, please contact us.
(4) Notwithstanding article (3), NEC will not be responsible for any claims on loss of profit or
other matters deemed to result from using the Projector.
Important Information
Safety Cautions
Precautions
Please read this manual carefully before using your NEC NP4001/NP4000 projector and
keep the manual handy for future reference. Your serial number is located on the bottom
of your projector.
Record it here:
CAUTION:
To turn off main power, be sure to remove the plug from power outlet. The
power outlet socket should be installed as near to the equipment as possible,
and should be easily accessible.
CAUTION:
• TO PREVENT SHOCK, DO NOT OPEN THE CABINET.
• THERE ARE HIGH-VOLTAGE COMPONENTS INSIDE.
• REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
This symbol warns the user that un-insulated voltage within the unit may be
sufficient to cause electrical shock. Therefore, it is dangerous to make any
kind of contact with any part inside of the unit.
This symbol alerts the user that important information concerning the operation and maintenance of this unit has been provided.
The information should be read carefully to avoid problems.
WARNING:
To prevent fire or shock, do NOT expose this unit to rain or moisture. Do NOT use
this unit’s plug with an extension cord or in an outlet unless all the prongs can be
fully inserted.
DOC Compliance Notice (for Canada only)
This Class B digital apparatus meets all requirements of the Canadian InterferenceCausing Equipment Regulations.
Machine Noise Information Regulation - 3. GPSGV (for Germany only)
The highest sound pressure level is less than 70 dB (A) in accordance with EN ISO
7779.
i
Important Information
g
s
)
j
y
y
y
g
Laser Rating
This label is on the side of the remote control.
CAUTION
CAUTION
Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
Do not look into the laser pointer while it is on and do not point the laser
beam at a person. Serious injury could result.
Disposing of your used product
EU-wide le
that used electrical and electronic products carrying the mark (left
must be disposed of separately from normal household waste. This
includes pro
you dispose of such products, please follow the guidance of your local authorit
After collecting the used products, they are reused and rec
proper wa
ative impact such as mercury contained in a lamp to the human
ne
health and the environment at the minimum level. The mark on the
electrical and electronic products only applies to the current European Union Member States.
islation as implemented in each Member State require
ectors and their electrical accessories or lamps. When
and/or ask the shop where you purchased the product.
. This effort will help us reduce the wastes as well as the
This mark is on the top
of the remote control.
cled in a
WARNING TO CALIFORNIA RESIDENTS:
Handling the cables supplied with this product will expose you to lead, a chemical known
to the State of California to cause birth defects or other reproductive harm. Wash hands
after handling.
ii
Important Information
RF Interference (for USA only)
WARNING:
The Federal Communications Commission does not allow any modifications or
changes to the unit EXCEPT those specified by NEC Display Solutions of America, Inc. in this manual. Failure to comply with this government regulation could
void your right to operate this equipment. This equipment has been tested and
found to comply with the limits for a Class B 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 harmful 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:
z Reorient or relocate the receiving antenna.
z Increase the separation between the equipment and receiver.
z Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
zConsult the dealer or an experienced radio / TV technician for help.
For UK only: In UK, a BS approved power cable with molded plug has a Black (five
Amps) fuse installed for use with this equipment. If a power cable is not supplied with
this equipment please contact your supplier.
Important Safeguards
These safety instructions are to ensure the long life of your projector and to prevent fire
and shock. Please read them carefully and heed all warnings.
Installation
• Do not place the projector in the following conditions:
On an unstable cart, stand, or table.
Near water, baths or damp rooms.
In direct sunlight, near heaters or heat radiating appliances.
In a dusty, smoky or steamy environment.
On a sheet of paper or cloth, rugs or carpets.
iii
Important Information
• If you wish to have the projector installed on the ceiling:
Do not attempt to install the projector yourself.
The projector must be installed by qualified technicians in order to ensure proper
operation and reduce the risk of bodily injury.
In addition, the ceiling must be strong enough to support the projector and the in-
stallation must be in accordance with any local building codes.
Please consult your dealer for more information.
CAUTION:
When shipping the projector, remove the optional lens beforehand. The lens
and the lens shift mechanism may encounter damage caused by improper
handling during transportation.
Place the projector in a horizontal position
Do not put the projector on its side when the lamp is turned on. Doing so may cause
damage to the projector. Tilting the front of the projector up or down by more than 45°
from level could reduce lamp life by up to 20%.
CAUTION:
Do not drop the projector on your hand or fingers while lifting the projector to
replace the filters. Doing so could injure your hand or fingers.
iv
Important Information
Fire and Shock Precautions
• Ensure that there is sufficient ventilation and that vents are unobstructed to prevent
the build-up of heat inside your projector. Allow at least 8 inches (20cm) of space between your projector and a wall.
• Do not try to touch the ventilation outlet on the rear as it can become heated while
the projector is turned on and immediately after the projector is turned off.
• Prevent foreign objects such as paper clips and bits of paper from falling into your
projector. Do not attempt to retrieve any objects that might fall into your projector. Do
not insert any metal objects such as a wire or screwdriver into your project. If something should fall into your projector, disconnect it immediately and have the object
removed by qualified service personnel.
• Do not place any objects on top of the projector.
• Do not touch the power plug during a thunderstorm. Doing so can cause electrical
shock or fire.
• The projector is designed to operate on a power supply of 100-240V AC 50/60 Hz.
Ensure that your power supply fits this requirement before attempting to use your
projector.
•Do not look into the lens while the projector is on. Serious damage to your eyes could
result.
• Keep any items such as magnifying glass out of the light path of the projector. The
light being projected from the lens is extensive, therefore any kind of abnormal objects that can redirect light coming out of the lens, can cause unpredictable outcome
such as fire or injury to the eyes.
• Do not cover the lens with the black lens cap or equivalent while the projector is on.
Doing so can lead to melting of the cap and possibly burning your hands due to the
heat emitted from the light output.
• Do not place any objects, which are easily affected by heat, in front of the projector
lens or a projector exhaust vent. Doing so could lead to the object melting or getting
your hands burned from the heat that is emitted from the light output and exhaust.
• Handle the power cable carefully. A damaged or frayed power cable can cause elec-
tric shock or fire.
Do not use any power cables other than the one supplied by NEC.
Do not bend or tug the power cable excessively.
Do not place the power cable under the projector, or any heavy object.
Do not cover the power cable with other soft materials such as rugs.
Do not heat the power cable
Do not handle the power plug with wet hands.
v
Important Information
• Turn off the projector, unplug the power cable and have the projector serviced by
qualified service personnel under the following conditions:
When the power cable or plug is damaged or frayed.
If liquid has been spilled into the projector, or if it has been exposed to rain or
water.
If the projector does not operate normally when you follow the instructions
described in this user's manual.
If the projector has been dropped or the cabinet has been damaged.
If the projector exhibits a distinct change in performance, indicating a need for
service.
• Disconnect the power cable and any other cables before carrying the projector.
• Turn off the projector and unplug the power cable if the projector is not to be used for
an extended period of time.
•When using a LAN cable:
For safety, do not connect to the connector for peripheral device wiring that might
have excessive voltage.
• Turn off the projector and unplug the power cable before cleaning the cabinet or re-
placing the lamp.
CAUTION:
• Always carry your projector by using the carrying handle.
• Do not use the tilt-foot for purposes other than originally intended. Misuses
such as using the tilt foot to carry or hang (from the wall or ceiling) the projector can cause damage to the projector.
• Do not send the projector in the soft case by parcel delivery service or cargo
shipment. The projector inside the soft case could be damaged.
• If heavy use for a number of consecutive days is expected, select the High
setting in the Fan Mode window to reduce heat stress on the projector (see
1Fan Mode).
• Do not unplug the power cable from the wall outlet or projector when the projector is powered on. Doing so can cause damage to the AC IN connector of
the projector and (or) the prong plug of the power cable.
• To turn off the AC power supply when the projector is powered on, use a
power strip equipped with a switch and a breaker.
• The projector can be unplugged during its cool down period after it is turned
off.
• Do not try to touch the ventilation outlet on the rear as it can become heated
while the projector is turned on and immediately after the projector is turned
off.
• Do not turn off the AC power for 60 seconds after the lamp is turned on and
while the POWER indicator is blinking green. Doing so could cause premature
lamp failure.
• Do not place your hands near the lens opening while shifting the lens. Shifting
the lens could pinch your fingers or hands causing injury.
vi
Important Information
Remote Control Precautions
• Handle the remote control carefully.
• If the remote control gets wet, wipe it dry immediately.
• Avoid excessive heat and humidity.
• Do not heat, take apart, or throw batteries into fire.
• If you will not be using the remote control for a long time, remove the batteries.
• Ensure that you have the batteries' polarity (+/–) aligned correctly.
• Do not use new and old batteries together, or use different types of batteries together.
• Dispose of used batteries according to your local regulations.
Lamp Replacement
To replace either of the lamps, follow all instructions provided on page 107.
Be sure to replace the lamp when the following is displayed on the screen:
If you continue to use the lamp after the lamp has reached the end of its usable life, the
lamp bulb may shatter, and pieces of glass may be scattered in the lamp case. Do not
touch them as the pieces of glass may cause injury.
If this happens, contact your dealer for lamp replacement.
Important Lamp Characteristic
The projector has a high-pressure mercury lamp as a light source.
A characteristic of mercury lamps is that brightness gradually decreases with age. Also
repeatedly turning the lamp on and off will increase the possibility of reduced brightness.
CAUTION:
When removing the lamp from a ceiling-mounted projector, make sure that no
one is under the projector. Glass fragments could fall if the lamp has been
burned out.
vii
Table of Contents
IMPORTANT INFORMATION............................................................................................................. I
Carefully unpack the projector and check that the following items are included:
NP4001/NP4000 Projector Remote Control (79TD5521)
CD-ROM
(This User’s manual)
(79TD5501)
Power cable
3.6m/11.8 ft.
(North America:
79TD5701)
(Europe: 79TD5711)
(Japan: 79TD 5691)
Remote Cable
10m/33ft
(79TD5481)
6 Segment Color
Wheel
(79TD5371)
Lens Hole Cap
(Installed)
(with Two AA alkaline batteries)
Quick setup guide
(79TD5741)
Important Information
(79TD5751)
For North America Only:
Registration Card
Limited Warranty
For Europe only:
Guarantee Policy
For Japan Only:
User's manual
Warranty card
Anti-Theft Screw for
lens x 1
(79TD5811)
Security Sticker
Contact your dealer immediately if any items are missing, appear damaged, or if the unit does not
work.
CAUTION
Avoid using the projector in dusty environments.
1
1. Introduction
o Introduction to the Projector
Features you’ll enjoy:
z DLP projector with high resolution
z Native WXGA support (NP4001 only)
A WXGA (1280 x 768) resolution provides wide screen display with an aspect ratio of
15:9.
zHigh brightness
High brightness output of 5200 and 4500 lumens (NP4000 and NP4001 respectively) is achieved using the 4-segment color wheel.
zDual Lamp system
Two lamp system offers increased lamp life and energy savings along with redundancy.
zExtensive optional lens with bayonet mount
Five types of optional lenses are available.
zPowered Lens Shift, Zoom, and Focus offer installation flexibility
Powered Horizontal and Vertical lens shift provides the ability to project from off center
screen installations. Powered zoom and focus provide quick and easy adjustment.
zDirect Power Off & Auto Start
The projector has a feature called “Direct Power Off”. This feature allows the projector
to be turned off (even when projecting an image) using a power strip equipped with a
switch and a breaker.
Note:
Before using Direct Power Off, be sure to allow at least 20 minutes immediately
after turning on the projector and starting to display an image.
Also, the power cable can be removed immediately after turning off the projector.
Auto Start eliminates the need to always use the POWER (ON/STANDBY) button
on the remote control or projector cabinet.
zA variety of input ports and a comprehensive array of system control interfaces
This projector supports input signals including BNC, DVI-D, analog RGB, component,
S-video, and composite.
z3W+3W Stereo speaker
Built in 3W x 2 speakers are provided.
zPreventing unauthorized use of the projector
Enhanced smart security settings for password protection, cabinet control panel lock to
help prevent unauthorized access, adjustments and theft deterrence.
z Integrated RJ-45 connector for wired networking capability for property management.
z Combination of BrilliantColor™ and 6-segment color wheel offers a more true color re-
production
2
p Part Names of the Projector
1. Introduction
Front-right view
ITEMLABELDESCRIPTIONSEE PAGE:
1.
2.
IR receiver Receiver for IR signal from remote control
Lamp cover Remove cover to replace lamp or color wheel
12
107
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Lens control panel See Lens Controls
OSD control panel See OSD Controls and Status LEDS
I/O connector panel Connect various input devices
Intake vent Lamp cooling vent – do not obstruct
Speakers Built-in stereo speakers
Height adjuster Adjusts level of projector
Lens Remove lens hole cap before use
Lens release button
Anti-Theft Screw Prevent theft of the lens
Intake vent and front
filter
Important:
Grill openings on the projector allow for good air circulation, which keeps the projector lamp cool. Do not obstruct any of the grill openings.
Press the release button before removing the
lens
Keeps the front fan free of dust
– clean regularly for optimum performance
– do not obstruct
3
7
8
10
—
—
6, 44
—
—
—
103
1. Introduction
Top View
ITEMLABELDESCRIPTIONSEE PAGE:
1.
2.
3.
4.
5.
6.
7.
Lens control panel See 3Lens Controls
Right-hand speaker Right-hand speaker
Lamp cover Remove cover to replace lamp or color wheel
Exhaust vent Exhaust vent – do not obstruct
OSD control panel See 3OSD Controls and Status LEDS
Rear intake vent Rear cooling intake – do not obstruct
Left intake vent Left-hand cooling intake – do not obstruct
7
—
107
—
8
—
—
4
1. Introduction
Carrying the Projector
Always carry your projector by the handle.
Before moving or carrying the projector, disconnect the power cable and any other cables that may be attached to it.
When moving the projector or when the projector is not in use, cover the lens with the
lens cap.
To extend the projector handle, refer to the following guide.
1. Stand the projector on its end with the control panels at the bottom.
Note:
Stand the projector on its end by lifting the cabinet. Do not use the handle to place
the projector upright.
2. Lift the handle in the direction shown until it is fully extended.
5
1. Introduction
Bottom view
ITEMLABELDESCRIPTIONSEE PAGE:
1.
2.
3.
4.
5.
6.
7.
Height adjusters Adjust projection height
Intake vent Color wheel cooling vent – do not obstruct
Front filter
Ceiling support holes
Security chain
opening
Rear filter
Side filter
With ceiling installation, use approved mounting hardware & M4 screws;
CAUTION
maximum depth of screw: 12 mm; distance from ceiling/ wall: 50/50 cm,
20/20 inch for proper ventilation; distance from fluorescent lamps: at least
50 cm front and back of then projector. For permanent installations, follow
local codes.
Keep the fan free of dust – clean regularly for
optimum performance
Contact your dealer for information on
mounting the projector on a ceiling
Attach anti-theft device –
see
u Using the Physical Lock
Keep the fans free of dust –
clean regularly for optimum performance
44
—
103
—
60
103
6
q Top Features
1. Introduction
Lens Controls
ITEMLABELDESCRIPTIONSEE PAGE:
1.
ZOOM Increase/decrease projected image size
50
2.
3.
4.
5.
6.
UP CURSOR
RIGHT CURSOR
Move image left, right, up, or down
DOWN CURSOR
LEFT CURSOR
FOCUS Focus the projected image
7
50
1. Introduction
OSD Controls and Status LEDS
ITEMLABELDESCRIPTIONSEE PAGE:
1.
2.
3.
4.
5.
6.
7.
MENU Open / Close the OSD
SELECT PAD Navigate and change settings in the OSD
RIGHT CURSOR/
VOLUME
INCREASE
EXIT Exit the On-Screen Display (OSD)
SOURCE
AUTO ADJUST Optimize image size, position, and resolution
LAMP 1
Increase volume
Change or select the input device
Green
See Indicator Messages
Flashing
61
61
46
62
39
45
113
8
1. Introduction
ITEMLABELDESCRIPTIONSEE PAGE:
Green
8.
9.
10.
11.
12.
LAMP 2
See Indicator Messages
Flashing
Green
POWER (LED)
Orange
See Indicator Messages
Flashing
STATUS (LED) Green
ON/STAND BY
Turn the projector on or off
(main power switch must be turned on first)
Lamp ready you can safely turn
on or off the projector
ENTER Select or change settings in the OSD
113
112
112
10, 37
61
13.
LEFT
CURSOR/VOLUME
DECREASE
Decrease volume
9
46
1. Introduction
r Terminal Panel Features
ITEMLABELDESCRIPTIONSEE PAGE:
1.
2.
3.
4.
5.
6.
7.
8.
9.
COMPUTER 3 IN
AUDIO IN (3)
AUDIO OUT Audio loop-thru
MONITOR OUT Connect to a monitor
REMOTE 2 Connect the remote to the projector
AUDIO IN (2)
L/MONO, R
(COMPONENT)
PC CONTROL Installation control
REMOTE 1 For external control
Connect the DVI cable (not supplied) from a
computer
Connect the audio cable (not supplied) from
the input device
Connect the audio cable (not supplied) from
the input device
Connect an RCA audio cables (not supplied)
from the input device right and left channels
31
—
—
—
16
—
—
128
136
10
1. Introduction
ITEMLABELDESCRIPTIONSEE PAGE:
When connected to the screen through a
commercially available cable, the screen de-
10.
SC TRIGGER
ploys automatically on start up of the
projector. The screen retracts when the projector is powered off (see notes below)
130
11.
12.
13.
14.
15.
16.
17.
18.
19.
S-VIDEO
POWER SWITCH Turn on/off the projector
AC IN Connect the supplied power cable
L/MONO, R
VIDEO IN
COMPONENT IN
(Y, Cb/Pb, Cr/Pr)
COMPUTER 2 IN
(R/Cr, G/Y, B/Cb,
H, V)
COMPUTER 1 IN
AUDIO IN (1)
Connect a commercially available S-video
cable from a video device
Connect RCA audio cables (not supplied)
from the input device right and left channels.
This audio jack is shared with S-Video input.
Connect a composite video cable (not supplied) from a video device to the yellow RCA
jack
Connect a component video enabled device
Connect RGBHV or Component signal from
computer or component video enabled device
Connect a VGA cable (not supplied) from a
computer
Connect the audio cable (not supplied) from
the input device
35
37, 47
36
—
35
34
31
31
—
20.
21.
LAN
SERVICE
Note:
y
To use this feature, you must turn on the Screen Trigger function on OSD.
y
Screen controllers are supplied and supported by screen manufacturers.
y
Do not use this jack for anything other than intended use. Connecting the wired
remote control to the Trigger mini jack causes damage to the remote control.
Connect a LAN cable (not supplied) from a
computer
Connect the USB cable (not supplied) from a
computer. For service personnel only.
11
91
—
1. Introduction
s Part Names of the Remote Control
The Remote Control unit supplied with the projector combines ergonomic design and utility
and includes features such as Volume and Zoom Control, Freeze Frame and a useful pointing tool in the form of a laser. Refer to the following diagram and table for button location and
functionality.
ITEMLABELLABELITEM
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
Remote jack Exit button
Laser pointer Laser button
Infrared transmitter L-Click button
LED R-Click button
Power OFF button* Focus/ Zoom button
Power ON button** Freeze button
Computer 1 button Lens shift button
Computer 2 button Aspect button
Video button Lamp mode button
Viewer button
(The VIEWER and
PAGE buttons will
work with the other
models, which have a
Viewer function.
NP4001/NP4000 does
not have this function).
Component button Volume buttons
Computer 3 button
S-Video button
LAN button
(Not available on
NP4001/NP4000)
Menu button Keystone button
Select ▲▼◄►
button
Enter button
18.
19.
20.
21.
22.
23.
24.
25.
26.
Auto ADJ. button
27.
28.
Magnify button (Not
available on NP4001)
Page Up/Down buttons
(The VIEWER and
PAGE buttons will
work with the other
models, which have a
Viewer function.
NP4001/NP4000 does
not have this function).
Picture button
29.
30.
31.
32.
PIC-Mute button
Help button
33.
34.
12
1. Introduction
Important:
1. Avoid using the projector with bright fluorescent lighting turned on. Certain high-
frequency fluorescent lights can disrupt remote control operation.
2. Be sure nothing obstructs the path between the remote control and the projector. If the path between remote and projector is obstructed, you can bounce the
remote signal off certain reflective surfaces such as projector screens.
3. The buttons and keys on the projector have the same functions as the corresponding buttons on the remote control. This user’s manual describes the
functions based on the remote control.
Note:
*To turn off the projector, press the Power OFF button twice.
**To turn on the projector, press and hold the Power On button for a minimum of
two seconds.
13
1. Introduction
Battery Installation
The Remote Control unit included with the projector does not contain batteries, though
batteries are supplied as part of the complete package. To insert (or replace) the batteries, refer to the following guide.
Remove the battery compartment
1.
cover by squeezing the locking
catch (A) and sliding the cover in
the direction of the arrow (B).
Insert the supplied batteries tak-
2.
ing note of the polarity (+/-) as
shown.
Replace the cover locator (A),
3.
and then click locking catch into
place (B).
14
1. Introduction
Operating Range for Wireless Remote Control
The infrared signal operates by line-of-sight up to a distance of about 22 feet (7m) and
within a 60-degree angle of the remote sensor on the projector cabinet.
The projector will not respond if there are objects between the remote control and the
sensor, or if strong light falls on the sensor. Weak batteries will also prevent the remote
control from properly operating the projector.
Remote Control Precautions
The following precautions ensure that the remote operates correctly and safely.
Handle the remote control carefully.
If the remote control gets wet, wipe it dry immediately.
Avoid excessive heat and humidity.
Do not heat, take apart, or throw batteries into fire.
For extended periods of inactivity, remove the batteries.
Ensure that the batteries' polarity (+/–) aligned correctly.
Do not use new and old batteries together, or different types of batteries together.
Dispose of used batteries according to local regulations.
15
1. Introduction
Using the Remote Control in Wired Operation
Connect the supplied remote cable to the REMOTE2 jack on the projector (see r Terminal Panel Features on page
control (see item 1,
s Part Names of the Remote Control on page 12).
Note:
Connecting the remote cable to the REMOTE2 jack on the terminal panel will
make the wireless operation unavailable.
10) and the other end to the remote jack on the remote
16
2. Installation and Connections
n Setting Up the Screen and the Projector
This section briefly describes how to set up your projector and how to connect video and
audio sources.
Your projector is simple to set up and use. But before you get started, you must first:
• Set up a screen and the projector.
• Connect your computer or video equipment to the projector.
See
s Making Connections on pages 31, 32, 33, 34, and 35.
•Connect the supplied power cable.
See
t Connecting the Supplied Power Cable on page 36.
Note:
Ensure that the power cable and any other cables are disconnected before moving the projector. When moving the projector or when it is not in use, cover the
lens with the lens cap.
17
2. Installation and Connections
o Selecting a Location
Locating the projector correctly ensures optimum performance and a longer parts life.
Take note of the following when setting up the projector:
• The projector table or stand should be level and sturdy.
• Position the projector so that it is perpendicular to the screen.
• Ensure cables do not cause a trip hazard.
18
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