NEC Lt170 Portable Projector Users Manual

							LT170
Portable Projector
User’s Manual 
						

							E-2
IMPORTANT INFORMATION
RF Interference
WARNING
The Federal Communications Commission does not allow any
modifications or changes to the unit EXCEPT those specified by
NEC Soluctions (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 residen-
tial installation. This equipment generates, uses, and can radi-
ate radio frequency energy and, if not installed and used in ac-
cordance 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 equip-
ment does cause harmful interference to radio or television re-
ception, 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:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
•Consult the dealer or an experienced radio / TV technician for help.
In UK, a BS approved power cable with moulded 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 warn-
ings.
Installation
1. For best results, use your projector in a darkened room.
2. Place the projector on a flat, level surface in a dry area away from
dust and moisture.
To avoid premature lamp failure, do not tilt the front of the projector
up or down by more than 10° from level.
3. Do not place your projector in direct sunlight, near heaters or heat
radiating appliances.
4. Exposure to direct sunlight, smoke or steam can harm internal com-
ponents.
5. Handle your projector carefully. Dropping or jarring can damage in-
ternal components.
6. Do not place heavy objects on top of the projector.
7. If you wish to have the projector installed on the ceiling:
a. Do not attempt to install the projector yourself.
b.The projector must be installed by qualified technicians in order
to ensure proper operation and reduce the risk of bodily injury.
c. In addition, the ceiling must be strong enough to support the pro-
jector and the installation must be in accordance with any local
building codes.
d. Please consult your dealer for more information.
8. Do not use the projector upside down on the surface of a tall cabinet,
a table, or a floor. Doing so can hit the POWER button before you
notice.
Safety Cautions
Precautions
Please read this manual carefully before using your NEC LT170 Projec-
tor 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.
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED NEC SERVICE PER-
SONNEL.
This symbol warns the user that uninsulated 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 concern-
ing the operation and maintenance of this unit has been pro-
vided.
The information should be read carefully to avoid problems.
WARNINGTO 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 THREE PRONGS CAN BE FULLY
INSERTED.
DO NOT OPEN THE CABINET. THERE ARE HIGH-VOLTAGE COM-
PONENTS INSIDE. ALL SERVICING MUST BE DONE BY QUALI-
FIED NEC SERVICE PERSONNEL.
DOC Compliance Notice
This Class B digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Acoustic Noise Information Ordinance-3. GSGV:
The sound pressure level is less than 70 dB (A) according
to ISO 3744 or ISO 7779.
Copyright© 2003 by NEC Viewtechnology, Ltd.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 de-
fects or other reproductive harm. Wash hands after handling. 
						

							E-3
Fire and Shock Precautions
1. Ensure that there is sufficient ventilation and that vents are unob-
structed to prevent the build-up of heat inside your projector. Allow at
least 4 inches (10 cm) of space between your projector and a wall.
2. 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 projec-
tor. Do not insert any metal objects such as a wire or screwdriver into
your projector. If something should fall into your projector, disconnect
it immediately and have the object removed by a qualified NEC ser-
vice personnel.
3. Do not place any liquids on top of your projector.
4. Do not look into the lens while the projector is on. Serious damage to
your eyes could result.
5. Keep any items such as magnifying glass out of the light path of the
projector. The light being projected from the lens is extensive, there-
fore 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.
6. Do not cover the lens with anything other than the built-in lens shutter
while the projector is on. Doing so can lead to melting of the cover
and possibly burning your hands due to the heat emitted from the
light output.
7. The projector is designed to operate on a power supply of 100-120 or
200-240 V 50/60 Hz AC. Ensure that your power supply fits this re-
quirement before attempting to use your projector.
8. Handle the power cable carefully and avoid excessive bending.
A damaged cord can cause electric shock or fire.
9. If the projector is not to be used for an extended period of time, dis-
connect the plug from the power outlet.
10. Do not touch the power plug during a thunderstorm. Doing so can
cause electrical shock or fire.
11. Do not handle the power plug with wet hands.
CAUTION
1. Do not try to touch the ventilation outlet on the rear as it can become
heated while the projector is turned on.
2. Do no use the tilt-foot for purposes other than originally intended.
Misuses such as gripping the tilt-foot or hanging on the wall can cause
damage to the projector.
3. When carrying the projector, heed the following:
*Use the supplied soft carrying case. Before putting the projector in
the soft carrying case, be sure to close the lens shutter so as not
to mar the lens.
*Do not handle the projector roughly.
*Do not send the soft carrying case by parcel delivery service or
cargo shipment. The projector inside the soft carrying case could
be damaged. (However, it is possible to use it as a carrier case on
board.)
4. Select “High” in the Fan mode if you continue to use the projector for
consecutive days. (From the menu, select [To Advanced Menu] →
[Setup 2] → [Fan Mode].)
5. Do not unplug the power cable from the wall outlet under any one of
the following circumstances.
Doing so can cause damage to the projector:
*While the Hour Glass icon appears.
*While the cooling fans are running. (The cooling fans continue to
work for 60 seconds after the projector is turned off).
Whats in the Box?Make sure your box contains everything listed. If any pieces are missing,
contact your dealer.
Please save the original box and packing materials if you ever need to
ship your LT170 Projector.
Remote control
(7N900431)
Power cable
(US: 7N080206)
(EU: 7N080005) Projector
Soft carrying case and its accessory pouch
(24BS7281)
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Batteries
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STATUS
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COMPUTER S-VID
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VIDEO INPUSH
RGB signal cable
(7N520012)
Quick
Connect
GuideImportant
InformationFor North America only
Registration card
Limited warranty
For Europe only
Guarantee policy
Lamp Replacement
•To replace the lamp, follow all instructions provided on page E-35.
•Be sure to replace the lamp when the message The lamp has
reached the end of its usable life. Please replace the lamp. ap-
pears. 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 NEC dealer for lamp replacement.
•Allow a minimum of 60 seconds to elapse after turning off the projec-
tor. Then  disconnect the power cable and allow 60 minutes to cool
the projector before replacing the lamp.
Tripod adapter
(24H49051)CD-ROM
User’s manual
IMPORTANT INFORMATION
Band (24B17871)
Use for bundling cables.
Flat-blade screwdriver
(24C05941)
12 
						

							E-4
TABLE OF CONTENTS
IMPORTANT INFORMATION ................................ E-2Safety Cautions ........................................................................... E-2
Whats in the Box? ...................................................................... E-3
INTRODUCTION .................................................... E-5Introduction to the Projector ....................................................... E-5
Part Names of the Projector ........................................................ E-6
Top Features ............................................................................. E-7
Terminal Panel Features ............................................................ E-7
Part Names of the Remote Control ........................................... E-8
Battery Installation ................................................................. E-9
Remote Control Precautions .................................................. E-9
Operating Range for Wireless Remote Control ...................... E-9
INSTALLATION AND CONNECTIONS ............... E-10Setting Up the Screen and the Projector .................................... E-10
Selecting a Location ............................................................... E-10
Throw Distance and Screen Size ............................................. E-11
Making Connections .................................................................. E-12
Connecting Your PC or Macintosh Computer ......................... E-12
To connect SCART output (RGB) ............................................ E-13
Connecting Your DVD Player .................................................. E-14
Connecting Your VCR or Laser Disc Player ............................. E-15
Attaching the Projector to a Tripod ......................................... E-16
Connecting the Supplied Power Cable .................................... E-17
PROJECTING AN IMAGE (BASIC OPERATION) ......E-18Turning on the Projector ............................................................ E-18
Selecting a Source ..................................................................... E-19
Adjusting the Picture Size and Position ..................................... E-19
Correcting the Vertical Keystone Distortion ............................... E-20
Optimizing RGB Picture Automatically ....................................... E-21
Turning Up or Down Volume ..................................................... E-21
Turning off the Projector ............................................................ E-22
After Use ................................................................................... E-22
CONVENIENT FEATURES ................................. E-24Turning Off the Image and Sound .............................................. E-24
Freezing a Picture ...................................................................... E-24
Enlarging and Moving a Picture ................................................. E-24
Getting the Information ............................................................. E-24
Security ..................................................................................... E-24
USING ON-SCREEN MENU ................................ E-27Basic Menu Operation ............................................................... E-27
Using the Menus ..................................................................... E-27
Adjusting and Setting Items .................................................... E-28
List of Menu Items .................................................................... E-29
Menu Elements .......................................................................... E-30
Menu Descriptions & Functions ................................................ E-31
Basic Menu ..................................................................E-31
Auto Adjust Executed .............................................................. E-31
Aspect Ratio ........................................................................... E-31
Picture Management ............................................................... E-31
Brightness .............................................................................. E-32
Contrast .................................................................................. E-32
Sharpness ............................................................................... E-32
Color ....................................................................................... E-32
Hue ......................................................................................... E-32
Keystone ................................................................................. E-32Advanced Manu ..........................................................E-32
[Image]
Auto Adjust / Horizontal / Vertical / Clock / Phase /
Noise Reduction / Flicker Reduction .................................... E-32
[Setup 1]
Lamp Mode / Language / Menu Color Select /
Menu Display Time /Background / Orientation /
Cabinet Button / Security/ Portrait ....................................... E-33
[Setup 2]
Power Management / Auto Start / Fan Mode / Signal Select E-33
[Information]
Page 1-4 .............................................................................. E-34
[Default]
Factory Default / Clear Lamp Hour Meter ............................. E-34
MAINTENANCE ................................................... E-35Replacing the Lamp ................................................................... E-35
Cleaning the Cabinet and the Lens ............................................. E-36
TROUBLESHOOTING ......................................... E-37Power Indicator (POWER) ......................................................... E-37
Status Indicator (STATUS) ......................................................... E-37
Lamp Indicator (LAMP) ............................................................. E-37
Common Problems & Solutions ................................................ E-38
SPECIFICATIONS ............................................... E-39
APPENDIX ........................................................... E-40
Cabinet Dimensions ................................................................... E-40
Pin Assignments of D-Sub COMPUTER Input Connector .......... E-40
Compatible Input Signal List ..................................................... E-41
TravelCare Guide ........................................................................ E-42 
						

							E-5
INTRODUCTION
Introduction to the ProjectorThis section introduces you to your new LT170 Projector and describes the features and
controls.
Congratulations on Your Purchase of The LT170 Projector
The LT170 is one of the very best projectors available today. The LT170 enables you to project
precise images up to 200 inches (measured diagonally) from your PC or Macintosh computer
(desktop or notebook), VCR, DVD player, document camera, or a laser disc player.
You can use the projector on a tabletop or cart, you can use the projector to project images
from behind the screen, and the projector can be permanently mounted on a ceiling*
1. The
remote control can be used wirelessly.
*
1 Do not attempt to mount the projector on a ceiling 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 installation
must be in accordance with any local building codes. Please consult your dealer for more
information.
Features youll enjoy:
•Auto vertical keystone correction up to +/- 30 degrees
•Security feature prevents the projector from being used by unauthorized individuals.
Password protection prevents unauthorized individuals from changing projector settings.
Cabinet Button Lock helps prevent unauthorized adjustments to the projector.
•One touch projection angle adjustment
•Manual lens shutter for protecting the lens
•Supplied carrying case with pouch for accessories
•Short focal length lens
•Remote features one touch source change buttons
•New Color Management system
•Newly designed menu system with dial control
•Multi-language on-screen menu
•The projector can be used with a tripod
•NEC’s exclusive Advanced AccuBlend intelligent pixel blending technology - an extremely
accurate image compression technology - offers image display from sources up to UXGA
(1600 
 1200) resolution*
2.
•Supports most IBM VGA, SVGA, XGA , SXGA/UXGA (with Advanced AccuBlend)*2,
Macintosh, component signal (YCbCr/ YPbPr) or any other RGB signals within a horizontal
frequency range of 24 to 100 kHz and a vertical frequency range of 50 to 120 Hz. This
includes NTSC, PAL, PAL-N, PAL-M, PAL60, SECAM and NTSC4.43 standard video sig-
nals.
*
2A UXGA (1600 
 1200) and SXGA image (1280 
 1024) are displayed with NEC’s Ad-
vanced AccuBlend.
NOTE: Composite video standards are as follows:
NTSC: U.S. TV standard for video in U.S. and Canada.
PAL: TV standard used in Western Europe.
PAL-N: TV standard used in Argentine, Paraguay and Uruguay.
PAL-M: TV standard used in Brazil.
PAL60: TV standard used for NTSC playback on PAL TVs.
SECAM: TV standard used in France and Eastern Europe.
NTSC4.43: TV standard used in Middle East countries. 
						

							E-6
Part Names of the Projector
INTRODUCTION
ZOOMFOCUS
LAMPM
E
N
U
SOURCEE
N
T
E
R
STATUS
POWER
O
N
/S
T
A
N
D
 B
YSELECT
COMPUTER S-VIDEO IN AUDIO IN
VIDEO IN
P
U
S
H
CLOSE
Zoom Ring
Focus Ring
Remote Sensor
Lens
Adjustable Tilt FootAdjustable Tilt Foot Button
Controls
Ventilation (inlet)
AC Input
Connect the supplied power cables two-pin plug here, and
plug the other end into an active wall outlet.
ZO
O
MFO
C
U
SPUSHPUSH
LAMPMENUS
O
U
R
C
EENTER
STATUS
POWER
ON/STAND BYSELECT
Lamp Cover
Lamp Cover Screw
Ventilation (outlet)
Built-in Security Slot ( 
 )* Monaural Speaker (0.5W)
*This security slot supports the MicroSaver® Security System. MicroSaver® is a registered trademark of Kensington Microware Inc. The logo is
trademarked and owned by Kensington Microware Inc.
Lens Shutter Lever
Opens or closes the lens shutter.
Terminal Panel
Fine Adjustment Ring for Tilt Foot
Fine Adjustment Ring for Tilt Foot 
						

							E-7
INTRODUCTION
Top Features
LAMP
STATUS
POWER
ON/STAND BY
SELECT
MENUSOURCEENTER3
2 4
56
17
1. POWER Button (ON / STAND BY)(  )
Use this button to turn the power on and off when the main power is
supplied and the projector is in standby mode.
To turn on the projector, press and hold this button for a minimum of
two seconds. To turn off the projector, press this button twice.
2. POWER Indicator
When this indicator is green, the projector is on; when this indicator is
orange, it is in standby mode. See the Power Indicator section on page
E-37 for more details.
3. STATUS Indicator
If this light blinks red rapidly, it indicates that an error has occurred, the
lamp cover is not attached properly or the projector has overheated. If
this light remains orange, it indicates that you have pressed a cabinet
button while the Cabinet Button is locked. See the Status Indicator
section on page E-37 for more details.
4. LAMP Indicator
If this light blinks red rapidly, its warning you that the lamp has reached
the end of its usable life. After this light appears, replace the lamp as
soon as possible (See page E-35). If this is lit green continually, it
indicates that the lamp mode is set to Eco. See the Lamp Indicator
section on page E-37 for more details.
5. MENU Button
Displays the menu. Press again to close the menu.
6. SELECT +/–, Volume Dial
*When the menu is displayed, rotating the dial makes menu selec-
tions. See page E-27.
*When the menu is not displayed, rotating the dial increases or de-
creases the volume. See page E-21.
7. SOURCE/ENTER Button
*When the menu is not displayed, this button works as the SOURCE
button. A press of the SOURCE button displays the Source Select
screen. See page E-19.
*When the menu is displayed, this button works as the ENTER but-
ton. A press of the ENTER button executes your menu selection and
activates items selected from the menu. See page E-27.
COMPUTER S-VIDEO IN
AUDIO IN
AC IN
VIDEO IN
14
532
Terminal Panel Features
1. COMPUTER / Component Input Connector (Mini D-Sub 15 Pin)
Connect your computer or other analog RGB equipment such as IBM
compatible or Macintosh computers. Use the supplied RGB cable to
connect to your computer. This also serves as a component input con-
nector that allows you to connect a component video output of compo-
nent equipment such as a DVD player (optional adapter ADP-CV1
required). This connector also supports SCART output signal. See page
E-13 for more details.
2. VIDEO IN Connector (RCA)
Connect a VCR, DVD player, laser disc player, or document camera
here to project video.
3. S-VIDEO IN Connector (Mini DIN 4 Pin)
Here is where you connect the S-Video input from an external source
like a VCR.
NOTE: S-Video provides more vivid color and higher resolution than the tradi-tional composite video format.
4. AUDIO IN Mini Jack (Stereo Mini)
This is where you connect the audio output from your computer or
DVD player. A commercially available audio cable is required.
5. Maintenance Terminal
For service use only. 
						

							E-8
INTRODUCTION
Part Names of the Remote Control
OFF
COMPUTER
AUTO ADJ.
PC-MUTE MAGNIFY
P0WER ON
VIDEO
AUTO
MENU
HELP
MUTE
PICTURE
FREEZE
CANCEL
ASPECT
COMP.S-VIDEO
ENTER
1
2
6
8
12
1610 3
4
5
7
9
11
13
14
15
17
1. Infrared Transmitter
Direct the remote control toward the remote sensor on the projector
cabinet.
2. POWER ON Button
When the main power is supplied, you can use this button to turn your
projector on.
NOTE: To turn on the projector, press and hold the POWER ON button for aminimum of two seconds.
3. POWER OFF Button
You can use this button to turn your projector off.
NOTE: To turn off the projector, press the POWER OFF button twice.
4. VIDEO  Button
Press this button to select a video source from a VCR, DVD player,
laser disc player or document camera.
5. S-VIDEO Button
Press this button to select an S-Video source from a VCR.
6. COMPUTER Button
Press this button to select Computer input.
7. AUTO ADJ. Button
Use this button to adjust an RGB source for an optimal picture.
See page E-21.
8. ASPECT Button
Press this button to display the Aspect Ratio select screen. See page
E-31.
9. 
 Button

 : Use these buttons to select the menu of the item you wish to
adjust.
 : Use these buttons to change the level of a selected menu item.
When no menus appear, these buttons work as a volume con-
trol.
When an image is magnified, the 
 button moves the image.10. ENTER Button
Executes your menu selection and activates items selected from the
menu.
11. MENU Button
Displays the menu for various settings and adjustments.
Press again to close the menu.
12. CANCEL Button
Pressing this button will return to the previous menu. While you are in
the Basic menu, pressing this button will close the menu.
13. HELP Button
Provides the projector information.
14. PICTURE Button
Press this button to display the Picture adjustment screen such as
Brightness, Contrast, Sharpness, Color and Hue. See page E-32.
15. PIC-MUTE Button
This button turns off the image and sound for a short period of time.
Press again to restore the image and sound.
16. FREEZE Button
This button will freeze a picture. Press again to resume motion.
17. MAGNIFY (+)(–) Button
Use this button to adjust the image size up to 400%.
The image is magnified about the center of the screen. See page E-
24. 
						

							E-9
1
2
30°
30°
7m / 22 feet
INTRODUCTION
Battery Installation
1. Press firmly and slide the battery cover off.
2. Remove both old batteries and install new ones (AAA). Ensure that
you have the batteries polarity (+/-) aligned correctly.
3. Slip the cover back over the batteries until it snaps into place. Do not
mix different types of batteries or new and old batteries.
Remote Control Precautions
•Handle the remote control carefully.
•If the remote control gets wet, wipe it dry immediately.
•Avoid excessive heat and humidity.
•If you will not be using the remote control for a long time, remove the
batteries.
•Do not place the batteries upside down.
•Do not use new and old batteries together, or use different types of
batteries together
Operating Range for Wireless Remote Control
Remote control
Remote sensor on
projector cabinet
Actual operating range may differ from the above drawing.
•The infrared signal operates by line-of-sight up to a distance of about
22 feet/7 m 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 bat-
teries will also prevent the remote control from properly operating the
projector. 
						

							E-10
INSTALLATION AND CONNECTIONS
This section describes how to set up your projector and how to connect video and audio sources.
To the wall outlet.
Setting Up the Screen and the Projector
Selecting a Location
The further your projector is from the screen or wall, the larger the image. The minimum size the image can be is approximately 30 (0.76 m) measured
diagonally when the projector is roughly 44.5 inches (1.1 m) from the wall or screen. The largest the image can be is 200 (5.0 m) when the projector is
about 305.5 inches (7.8 m) from the wall or screen. Use the drawing below as a guide.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
pages E-12 to 15.
Connect the supplied power cable.
See page E-17.
NOTE: Ensure that the power cable and any
other cables are disconnected before mov-
ing the projector. When moving the projec-
tor or when it is not in use, close the lens
shutter.
1
32
200
180
150
120
100
80
60
4030
1.1
44.51.5/59.82.3/90.63.1/121.33.9/152.24.6/182.75.8/228.77.0/274.87.8/305.5
Screen size (Unit: cm / inch)
Screen size
Lens center 406.4 (W) 
 304.8 (H) / 160 (W) 
 120 (H)
365.8 (W) 
 274.3 (H) / 144 (W) 
 108 (H)
304.8 (W) 
 228.6 (H) / 120 (W) 
 90 (H)
243.8 (W) 
 182.9 (H) / 96 (W) 
 72 (H)
203.2 (W) 
 152.4 (H) / 80 (W) 
 60 (H)
162.6 (W) 
 121.9 (H) / 64 (W) 
 48 (H)
121.9 (W) 
 91.4 (H) / 48 (W) 
 36 (H)
81.3 (W) 
 61.0 (H) / 32 (W) 
 24 (H)
61.0 (W) 
 45.7 (H) / 24 (W) 
 18 (H)
Distance (Unit: m/inch)
CAUTION:To avoid premature lamp failure, do not tilt the front of
the projector up or down by more than 10° from level.