NEC LT75Z User Manual
Micro-Portable Projector
LT75Z
User’s Manual
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IMPORTANT INFORMATION
Precautions
Please read this manual carefully before using your NEC LT75Z
Projector and keep the manual handy for future reference.
Your serial number is located on the bottom of your LT75Z.
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 PR EVENT SHOCK, DO NOT OPEN THE
CABINET.
NO USER-SERVICEABLE P AR TS INSIDE. REFER SERVICING TO QUALIFIED NEC SERVICE PERSONNEL.
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 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 GROUNDED 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-V OLTAGE COMPONENTS INSIDE. ALL SERVICING MUST BE
DONE BY QUALIFIED NEC SERVICE PERSONNEL.
RF Interference
WARNING
The Federal Communications Commission does not allow any modifications or changes to the unit EXCEPT
those specified by NEC Technologies 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, pur suant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interf erence 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:
• 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.
DOC Compliance Notice
This Class B digital apparatus meets all requirements of the
Canadian Interference-Causing Equipment Regulations.
3. GSGV Acoustic Noise Information Ordinance:
The sound pressure level is less than 70 dB (A) according to
ISO 3744 or ISO 7779.
• IBM is a registered trademark of International Business Machines Corporation.
• Macintosh and PowerBook are registered trademarks of Apple Computer, Inc.
• Other product and company names mentioned in this user's manual may be the trademarks of their respective holders.
E-2
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
1. For best results, use your projector in a darkened room.
2. Place the projector on a flat, level surf ace in a dry area away
from dust and moisture.
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 components.
5. Handle your projector carefully . Dropping or jarring can damage internal 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
projector and the installation must be in accordance with any
local building codes.
d. Please consult your dealer for more information.
Power Supply
1. The projector is designed to operate on a power supply of
100-120 or 200-240 V 50/60 Hz A C. Ensure that y our power
supply fits this requirement before attempting to use your
projector.
2. Handle the power cab le carefully and avoid e xcessive bending. A damaged cord can cause electric shock or fire.
3. If the projector is not to be used for an extended period of
time, disconnect the plug from the power outlet.
CAUTION
Do not turn off the main power or unplug the power
cable from the wall outlet under any one of the following circumstances. Doing so can cause damage to the
projector:
• Immediately after the power cable is plugged into the
wall outlet (when the POWER indicator has not
changed to a steady orange glow).
• Immediately after the cooling fan stops working (The
cooling fan continues to work for 90 seconds after
the projector is turned off with the POWER button).
Cleaning
1. Unplug the projector before cleaning.
2. Clean the cabinet periodically with a damp cloth. If heavily
soiled, use a mild detergent. Ne ver use strong detergents or
solvents such as alcohol or thinner.
3. Use a blower or lens paper to clean the lens, and be careful
not to scratch or mar the lens.
E-3
Lamp Replacement
•To replace the lamp, follo w all instructions provided on page
E-34.
• Be sure to replace the lamp when the message "The lamp
has reached the end of its usable life. Please replace the
lamp." appears. 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 90 seconds to elapse after turning off
the projector. Then disconnect the power cable and allo w 60
minutes to cool the projector before replacing the lamp.
Fire and Shock Precautions
1. Ensure that there is sufficient ventilation and that vents are
unobstructed to prevent the build-up of heat inside y our projector. Allow at least 3 inches (10cm) of space betw een 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 projector. 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 service personnel.
3. Do not place any liquids on top of your projector.
• Do not look into the lens while the projector is on. Serious dam-
age 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 supplied 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.
E-4
TABLE OF CONTENTS
1. INTRODUCTION
Introduction to the LT75Z Projector ............................... E-6
Getting Started................................................................ E-6
What’s in the Box............................................................ E-7
Getting to Know Your LT75Z Projector .......................... E-8
Front / Side Features ............................................................... E-8
Attaching the lens cap ............................................................. E-8
Rear / Side Features ................................................................E-9
Top Features..........................................................................E-10
Terminal Panel Features .........................................................E-11
Remote Control Features ....................................................... E-12
Remote Control Battery Installation.................................E-13
Operating Range ............................................................E-13
Remote Control Precautions...........................................E-13
2. INSTALLATION
Setting Up Your Projector............................................. E-14
Selecting a Location ..................................................... E-14
Screen and Projection Distance...................................E-14
Distance Chart ..............................................................E-15
Reflecting the Image..................................................... E-15
Wiring Diagram ............................................................. E-16
Connecting Your PC or Macintosh Computer ........................E-17
Connecting Your DVD Player .................................................E-18
Connecting Your VCR or Laser Disc Player............................E-19
About Startup screen (Menu Language Select screen)...........E-20
3. OPERATION
Connecting the Power Cable and Turn on the Projector
Adjusting the Image Size and the Focus ..................... E-22
Adjusting the Image Using Auto Adjust .......................E-23
Enlarging and Moving a Picture ................................... E-24
Using the Menus ........................................................... E-24
Menu Tree......................................................................E-25
Menu Elements .............................................................E-26
Menu Descriptions & Functions ................................... E-27
Source Select ................................................................E-27
RGB/Video/S-Video
Picture ...........................................................................E-27
Brightness/Contrast/Color/Hue/Sharpness
Volume........................................................................... E-27
Image Options............................................................... E-27
Keystone ............................................................................... E-27
Lamp Mode ...........................................................................E-28
Aspect Ratio .......................................................................... E-28
Position/Clock .......................................................................E-29
Resolution .............................................................................E-29
Video Filter.............................................................................E-29
Factory Default ......................................................................E-29
Color Management .......................................................E-30
Gamma Correction ................................................................E-30
White Balance .......................................................................E-30
Projector Options.......................................................... E-30
Menu .....................................................................................E-30
Menu Mode....................................................................E-30
Basic Menu/Advanced Menu
Language .......................................................................E-30
Source Display ............................................................... E-30
No Input Display .............................................................E-30
Volume Bar.....................................................................E-30
Keystone Bar..................................................................E-31
Menu Display Time .........................................................E-31
.....E-21
Setup.....................................................................................E-31
Orientation......................................................................E-31
Cinema Position ............................................................. E-31
Background ...................................................................E-31
Signal Select RGB ..........................................................E-31
Signal Select Video/S-Video ...........................................E-31
Auto Adjust ....................................................................E-32
Auto Start.......................................................................E-32
Power Management .......................................................E-32
Power Off Confirmation .................................................. E-32
Keystone Save ............................................................... E-32
White Segment...............................................................E-32
Default Source Select .....................................................E-32
Communication Speed ................................................... E-32
Control Panel Key Lock ..................................................E-32
Clear Lamp Hour Meter ..................................................E-33
Information .................................................................... E-33
4. MAINTENANCE
Replacing the Lamp...................................................... E-34
5. TROUBLESHOOTING
Power/Status Light Messages .....................................E-35
Common Problems & Solutions ................................... E-35
6. SPECIFICATIONS
Optical/Electrical/Mechanical ......................................E-36
Cabinet Dimensions...................................................... E-37
D-Sub Pin Assignments................................................ E-38
Compatible Input Signal List ........................................ E-39
PC Control Codes ......................................................... E-40
Cable Connection .........................................................E-40
E-5
1. INTRODUCTION
Introduction to the LT75Z Projector
This section introduces you to your new LT75Z Projector and
describes the features and controls.
Congratulations on Y our Purchase of The L T75Z
Projector
The LT75Z is one of the very best projectors available today.
The LT75Z enables you to project precise images up to 200
inches across (measured diagonally) from your PC or
Macintosh computer (desktop or notebook), VCR, D VD pla yer ,
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.
Features you’ll enjoy:
• Simple set up and operation.
•A high-performance 135 watt NSH lamp.
• The supplied wireless remote control that operates the projector from the front or rear.
• The image can be projected between 30 and 200 inches
(measured diagonally).
•Keystone correction allows you to correct trapezoidal distortion so that the image is square.
•You can choose between video modes depending on your
source:
"normal" for a typical picture, "natural" for true color reproduction.
• An image can be projected from in front or behind a screen,
and the projector can even be installed on the ceiling.
• NEC Technologies’ exclusive Advanced AccuBlend intelligent pixel blending technology - an extremely accurate image compression technology - offers a crisp image with
UXGA (1600⳯1200) resolution*2.
• Supports most IBM VGA, SV GA, XGA*2 , SXGA*2, UXGA*
Macintosh, component signal (YCbCr / YPbPr) or any other
RGB signals within a horizontal frequency range of 15 to
100 kHz and a vertical frequency range of 50 to 120Hz. This
includes NTSC, PAL, PAL-N, PAL-M, PAL60, SECAM and
NTSC4.43 standard video signals.
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-M: TV standard used in Brazil.
PAL-N: TV standard used in Argentina, Paraguay and Uruguay.
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.
Getting Started
The fastest way to get started is to take your time and do everything right the first time. Take a few minutes now to review
the user’s manual. This may save you time later on. At the
beginning of each section of the manual you’ll find an overview. If the section doesn’t apply, you can skip it.
2
•You can control the projector with a PC using the PC Control port.
• The contemporary cabinet design is light, compact, easy to
carry, and complements any office, boardroom or auditorium.
*1Do 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.
2
An XGA image (1024⳯768), SXGA image (1280⳯1024) and UXGA
*
image (1600⳯1200) are converted into an 800⳯600 crisp image
with NEC technology’s Advanced AccuBlend.
E-6
What's 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 LT75Z Projector.
L
E
C
N
A
C
R
E
T
N
E
SELECT
U
N
E
M
AUTO ADJUST
SOURCE
NEC LT75Z Projector
STAND BY
ON/
POWER
STATUS
PICTURE FREEZE
MEN
U
EN
T
E
R
RD-372E
MUTE
HELP
CANCEL
R
G
B
VIDEO S-VIDEO
A
U
T
MAGNIFY
O
A
D
POWER
J
.
V
O
L
U
M
E
ASPECT
Lens cap
Soft carrying case
Quick
Connect
Guide
Remote control
Batteries
String and rivet
Power cable
User's
Manual
RGB signal cable
E-7
C
Getting to Know Your LT75Z Projector
Front/Side Features
L
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SELECT
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M
Adjustable Tilt Foot
Controls
N
A
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R
E
T
N
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AUTO ADJUST
SOURCE
STAND BY
ON/
POWER
STATUS
Ventilation (inlet)
Zoom Ring
Focus Ring
Lens
Attaching the lens cap to the bottom with the supplied string and rivet
1. Thread the string through the hole on the lens cap and then tie a knot in the string.
2. Use the rivet to attach the string to the bottom of the projector.
Adjustable Tilt Foot Button
Remote Sensor
Lens Cap
E-8
Rear/Side Features
Monaural Speaker (1W)
PC
C
O
N
TR
O
L
Remote Sensor
STATUS
POW
ER
ON/
STAND BY
SOURCE
A
U
D
IO
V
ID
E
O
S-V
ID
E
O
R
AUTO ADJUST
M
E
N
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SELECT
E
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T
E
G
B
R
C
A
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E
L
Terminals
Bottom
AC Input
Slot for Kensington MicroSaver
Security System
Rear Foot
Rotate to fine-adjust horizontally position
Lamp cover
Lamp cover screw
Rear Foot
(not adjustable)
Ventilation (inlet)
A
C
IN
Ventilation (outlet)
Heated air is exhausted from here.
Rear Foot
Spacer (black rubber)
Spacer (black rubber)
To fine-adjust the height of the rear
foot, remove the spacer and rotate
the rear foot to the desired height.
Ventilation (inlet)
NOTE: The projector has an internal temperature sensor. The sensor controls the speed of the fan to keep constant temperature in the inside.
When the internal temperature rises, the built-in fan automatically runs at a high speed (high-speed mode).
During this time, the sound of exhaust may be heard. This is not a malfunction.
E-9
Top Features
CONTROL
AUDIO
STATUS
POWER
3
VIDEO
2
1
ON/
STAND BY
S-VIDEO
RGB
4
SOURCE
5
AUTO ADJUST
9
8
M
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N
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C
SELECT
A
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6
7
1. Power Button (ON / STAND BY)
Use this button to turn the power on and off when the power is
supplied and the projector is in standby mode.
NOTE: To turn off the projector , press and hold this button for a minimum of two seconds.
2. Status Indicator
When this is lit red continually , it's warning you that the projection lamp has exceeded 1000 hours (1500 houres in Eco mode)
of service. After this light appears, it is advisable to replace the
projection lamp as soon as possible. (See page E-34). In addition the message
able life. Please replace the lamp."
the lamp is replaced.
If this light blinks red rapidly, it indicates that the lamp cov er is
not attached properly or the projector is overheated.
See the Power/Status Light Messages on page E-35 for more
details.
3. Power Indicator ( )
When this indicator is green, the projector is on; when the indicator is orange, it is in standby mode.
4. Source Button
Use this button to select a video source such as a PC, VCR or
DVD player.
Each time this button is pressed, the input source will change
as follows:
"The lamp has reached the end of its us-
appears continually until
RGB Video S-Video
5. Auto Adjust Button (RGB only)
Use this button to adjust Position-H/V and Pixel Clock/Phase
for an optimal picture. Some signals may not be displa yed correctly or take time to switch between sources.
6. Enter Button
Executes your menu selection and activates items selected
from the menu.
7. Cancel Button
Press this button to close the menu.
8. Select (▲▼䊴 䊳) Buttons
▲▼: Use these buttons to select the menu of the item you
wish to adjust.
䊴 䊳
: Use these buttons to change the level of a selected
menu item.
9. Menu Button
Displays the menu.
If no input signal is present, the input will be skipped.
E-10
S
Terminal Panel Features
POWER
1
2
PC CONTROL
AUDIO
TATUS
3
VIDEO
ON/
STAND BY
4
S-VIDEO
RGB
SOURCE
AUTO ADJUST
M
E
5
C
SELECT
A
N
C
E
L
AC IN
E
N
T
E
R
N
U
1. PC Control Port (Mini DIN 8 Pin)
Use this port to connect your PC to control your projector via a
serial cable. This enables y ou to use your PC and serial communication protocol to control the projector. The NEC optional
serial cable is required to use this port.
If you are writing your own program, typical PC control codes
are on page E-40.
A cap is put on the port at the factory. Remove the cap when
using the port.
2. Audio Input Mini Jack (3.5 mm ∅)
This is where you connect audio output from your computer,
VCR, DVD player or laser disc player.
A commercially available audio cable is required.
3. Video Input (RCA)
Connect a VCR, DVD player, laser disc player, or document
camera here to project video.
4. S-Video Input (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 traditional composite video format.
5. RGB Input/Component Input Connector
(Mini D-Sub 15 pin)
Connect your PC or other RGB equipment such as IBM or
compatible computers. Use the supplied RGB cable to connect to a PC. Or connect a Macintosh computer here using the
supplied RGB cable. This also serves as a component input
connector that allows you to connect a component video output of component equipment such as a DVD player.
6
7
6. AC Input
Connect the supplied power cable's three-pin plug here. When
you plug the other end into an active wall outlet, the POWER
indicator turns orange and the projector is in standby mode.
7. Built-in Security Slot ( )
This security slot supports the MicroSaver® Security System.
MicroSaver® is a registered trademark of Kensington
Microware Inc.
The logo is trademarked and owned by K ensington Microware
Inc.
E-11
Remote Control Features
1. Infrared Transmitter
Direct the remote control toward the remote sensor on the projector cabinet.
2. Power Button
If power is applied, you can use this button to turn your projector on and off.
NOTE: To turn off the projector , press and hold the POWER button for
a minimum of two seconds.
3. Source Buttons
Press to select a video source.
4. Auto Adjust Button
Use this button to adjust Position-H/V and Pixel Clock/Phase
for an optimal picture. Some signals may not be displa y ed correctly, or in some cases it may take some time for a source to
switch between sources.
5. Magnify Buttons
Use the (+) or (–) button to adjust the image size up to 400%.
6. Volume Buttons
Press (+) to increase the volume and (–) to decrease it.
7. Picture Button
Press this button to display the Picture adjustment window.
Each time this button is pressed, the current picture adjustment item will change as follows:
Brightness Contrast Color Hue Sharpness
Remote Control
RGB
VIDEO S-VIDEO POWER
1
2
3
4
5
7
8
11
AUTO ADJ.
VOLUME
MAGNIFY
PICTURE FREEZE MUTE ASPECT
MENU
HELP
6
10
9
12
13
14
ENTER
CANCEL
RD-372E
13. Select (▲▼䊴 䊳) Buttons
▲▼ : Use these buttons to select the menu of the item you
wish to adjust.
䊴 䊳
: Use these buttons to change the level of a selected
menu item.
15
Unavailable items will be skipped.
8. Freeze Button
This button will freeze a picture. Press again to resume motion.
9. Mute Button
This button turns off the image and sound for a short period of
time. Press again to restore the image and sound.
10. Aspect Button
Press this button to display the Aspect Ratio select window.
Each time this button is pressed, the current aspect ratio will
change as follows:
Normal Zoom Wide Zoom Cinema
You can also select the aspect ratio by using the Select 䊴 or
button. If no adjustments are performed within 3 seconds, the
Aspect Ratio select window will disappear. (See also page E-
28.)
11. Menu Button
Displays the menu.
12. Help Button
Provides information about the current signal and the status of
the projector.
14. Enter Button
Executes your menu selection and activates items selected
from the menu.
15. Cancel Button
Press this button to exit the menu. While you are in the adjustment or setting menu, pressing this button will return to the
previous menu.
䊳
E-12
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