Kensington Projector DT20 User Manual
Multi-Function LCD Projector DT20  
User’s Manual  
English  
Deutsch  
Français  
Italiano  
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Svenska  
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Warnings and Safety Precautions  
● Warning Symbols  
To alert the user to important safety precautions, the following symbols are used  
in this manual and on the product. Make sure you understand what these sym-  
bols mean before operating the projector.  
: Death or serious injury may result if this warning is ignored.  
WARNING  
CAUTION  
: Injury or damage to the equipment may result if this warning is  
ignored.  
: This indicates an item that you should take care of when handling  
your projector.  
NOTE  
: This symbol alerts the user to high voltage that could cause electric  
shock.  
● Safety Precautions  
WARNING  
• If a fault occurs:  
•
If you detect smoke, or a strange smell or sound, immediately disconnect the  
power cord.  
It is dangerous to continue using the projector after a fault occurs. Return the  
projector to the dealer where it was purchased for repair.  
• Avoid placing the projector near dangerous substances.  
•
Make sure that no metallic or flammable material can get into the projector  
through the air vents.  
•
Do not place any objects containing water on top of or next to the projector.  
• If foreign matter gets inside the projector:  
•
If foreign matter such as water or metal gets inside, immediately disconnect  
the power cord.  
It is dangerous to continue using the projector when foreign matter gets  
inside. Return the projector to the dealer where it was purchased for servic-  
ing.  
• Do not remove the cabinet.  
Do not remove the cabinet. There are high-voltage components inside and  
touching these parts could cause electric shock, or damage the equipment.  
•
• Handle the power cade safely.  
•
Do not place any heavy objects on top of the power cord.  
Damage to the power cord can cause wire breakage, fire, or electric shock.  
Do not pull the power cord when disconnecting the power plug.  
•
Pulling the cable may break the wires or cause fire or electric shock. Always  
hold the plug itself when pulling it out of the power outlet.  
•
Do not damage the power cable. If the power cord is damaged (e.g. the core  
is exposed or cut), contact the sales office of purchase.(charged) it could  
cause fire or electric shock if you continue using the damaged power cord.  
E-3  
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• Do not look through the lens.  
Do not look through the lens into the projector during operation. The powerful  
rays passing through the lens could damage the eyes.  
•
• Do not put the projector in unstable places.  
•
Do not put the projector in unstable places such as on unstable desks or  
slopes.  
Doing so could cause the projector to drop or turn over, resulting in injury.  
• Do not use any voltages other than specified.  
•
Do not use any voltages other than specified. Doing so could cause fire or  
electric shock.  
• Do not disassemble the alkaline batteries  
•
Do not short-circuit, disassemble, or burn the alkaline batteries.  
Doing so could cause the alkaline solution to leak, which could cause eye  
injury, as well as cause a fire or damage the surrounding area due to heat or  
explosion. If the alkaline solution touches skin or clothes, wash them with  
clean water. If it get into eyes, immediately wash them with clean water and  
see a doctor.  
• Do not bump the glass surface  
Do not bump the glass surface over the scanner. Doing so may break the  
glass, resulting in injury.  
•
• Do not touch the air vents or lamp cover  
•
The air vents, lamp cover, and peripheral surfaces may be hot during opera-  
tion or just after the light is turned off.  
Do not touch those for a long time.  
• Do not block the lens front  
•
Do not block the lens front during operation.  
The powerful rays passing through the lens may cause fire or burns if you put  
anything in front of the lens or block the lens with your hand during operation.  
CAUTION  
• Installation  
Avoid installing the projector in places where it may be exposed to:  
•
- Strong vibrations  
- Soot or steam  
- Direct sunlight or near a heater (35˚C/95˚F or higher)  
- High humidity or dust  
- Extreme cold (0˚C/32˚F or lower)  
- Strong magnetic or electric field generated from a nearby appliance  
- Wobbling on an unstable surface  
• Do not block the air vents.  
Do not block the air vents with cloth or an object.  
•
When you put anything around the unit, be sure to ensure a space of 10 cm/4  
inches or more between the unit and the air vent. Be sure to prevent paper or  
cloth from blocking the air vent at the bottom of the unit. If blocked, the  
internal temperature may increase, resulting in malfunctions.  
• Do not bump the projector.  
Avoid bumping the projector when moving or handling. Shocks can cause  
damage.  
•
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• Care of the projector  
•
•
•
To prevent risk of accidents, always disconnect the power plug before clean-  
ing the projector.  
Clean the lens surface with a commercial blower or lens cleaning paper.  
Wiping with tissue paper or a handkerchief can damage the lens.  
To clean the cabinet, operation panel, and glass surface, wipe gently with a  
soft cloth. For particularly dirty spots, soak the cloth in a neutral detergent  
mixed in water, wring out well and wipe off the dirt, then use a dry cloth to  
wipe dry.  
•
Do not wipe the projector with any volatile solvent such as benzine or thinner.  
Solvents can cause surface deformation or flaking of the paint.  
If using an impregnated cloth, follow the instructions.  
• Avoid scratching the glass surface.  
•
Take care not to scratch the glass surface of the scanner with hard or pointed  
objects.  
Scratches on the glass may distort the projected image.  
• Batteries  
•
When inserting batteries in the remote control, note the polarity (plus and  
minus signs) and insert correctly as indicated. Inserting a battery in a wrong  
direction can cause rupture or leakage, and could result in fire and injury or  
soil the surrounding area.  
•
•
Do not use batteries other than the type specified for the equipment. Do not  
use a new battery and an old battery together. Incorrect battery usage could  
result in rupture or leakage, and could cause fire and injury.  
Do not heat, break open, burn, or immerse the batteries. Battery rupture or  
leakage could cause fire and injury.  
• Servicing and cleaning  
Have the internal components cleaned by a retailer about once a year. There  
•
is a risk of fire or faulty operation if the inside of the projector gets dusty and  
is not cleaned for a long time. For best results, the projector should be  
serviced before the wet season brings damp conditions. Cleaning charges  
are at the discretion of the retailer.  
• If not using the projector for a long period:  
•
If you do not plan to use the projector for a long time, disconnect the power  
cord for safety.  
• Disposal  
Follow the recommendations of your local authority when disposing of the  
projector.  
•
• Transporting the projector  
•
Use the special packaging when transporting the projector. The manufacturer  
cannot accept responsibility in the event of damage or accident if other  
packaging is used.  
•
•
Use the special packaging no more than two times. Repeated usage reduces  
the shock absorbency of the packaging and can lead to damage or accident.  
Contact the retailer if you require new packaging.  
• Lamp implosion  
An AC type New Super High pressure lamp is used in this projector and it is  
•
rare for the lamp to explode during use. The lamp is also designed to forcibly  
turn off because there is a high possibility that the lamp will break if it is used  
beyond the lamp usage of 1500 hours (Refer to pages E-54 and E-55).  
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Note the following things  
•
A noise occurs because the internal pressure of the New Super High pres-  
sure lamp gets extremely high.  
The unit is designed so that no pieces of glass come out of it when the lamp  
explodes.  
•
However, the gas inside of the lamp can escape and looks like white smoke.  
It will not cause any fire.  
Remedy  
If a lamp explodes in a product, there will be pieces of lamp inside. Do not  
•
replace the lamp. Return the product to the sales office or agent of purchase.  
Even though the lamp has exploded, never try to replace the lamp by your-  
self. The lamp pieces could cause injury.  
• Replacing the lamp  
Be sure to turn the lamp off and disconnect the power cord when the fan  
•
stops, and wait an hour or more before replacing the lamp.  
Replacing the lamp during operation or just after the power is turned off may  
cause burns due to heat.  
Refer to “Lamp Unit Replacement” on page E-54 for the procedure.  
• Replacing / cleaning the air filter  
Be sure to disconnect the power cord when the cooling fan stops before  
•
removing the air filter.  
Removing the air filter while the cooling fan is rotating could cause a burn.  
Refer to “Cleaning the Air Filter” on page E-56 for the procedure.  
• Avoiding malfunctions and accidents  
•
Adjust the Adjustable feet to keep the projector horizontal.  
Using the projector in a tilted status may cause injury if it turns over. Refer to  
“Adjusting the Tilt” on page E-18 for the adjusting procedure.  
• Do not disassemble the manganese batteries  
Do not short-circuit, disassemble, or burn the manganese batteries.  
•
Doing so could cause the batteries to generate heat or explode due to the  
leaked solution, resulting in fire, injury, or damages to the surrounding area.  
• Do not do the followings  
•
Do not put anything heavy on the projector.  
•
Do not step on the projector, rack, or stand. Do not hold or hang on the  
projector.  
Doing so could cause the projector to turn over or break, resulting in injury.  
Especially be careful if small children are near.  
•
•
Do not use the rack unless the casters are locked when placing the projector  
on a rack with casters.  
Doing so may cause the projector to move or turn over, resulting in injury.  
Do not turn the lamp on/off within one minute after it is turned off/on. Ex-  
tremely high voltage is generated in the lamp just after it is turned on. Turning  
the lamp on/off too frequently could cause the lamp to deteriorate or break,  
resulting in malfunctions of the projector.  
•
Do not project an image with the lens cap attached.  
• Moving the projector  
•
Be sure careful of the glass surface when moving the projector while holding  
the handles with both hands.  
•
If not inserted fully, the materials cover may get loose and fall off while you  
carry it.  
E-6  
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• Care of the power cord and plug  
•
Do not put the power cord near a heater.  
Doing so could cause the sheath of the cable to melt down, resulting in fire or  
electric shock.  
•
•
Do not connect or disconnect the power cord with wet hands. Doing so could  
cause electric shock.  
Be sure to pull out the power cord and disconnect any cable connections  
between units and release the anti-theft lock before moving the projector.  
Moving the projector with cables connected may cause fire or electric shock if  
the cables are damaged.  
•
If you do not plan to use the projector for a long time, disconnect the power  
cord for safety.  
• DO NOT REMOVE ANY SCREWS except the lamp cover screw and two lamp  
unit screws.You could receive an electric shock.  
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  
DT20 Projector.  
DT20 Projector (1)  
Remote control(1)  
Power codes (2)  
Three-pin type for U.S.A and Canada;  
For North America  
Two-pin type for Europe.  
For Europe  
PC Signal cable (1)  
Lens cap(1)  
Batteries(2) (AA×2)  
Documents:  
User’s manual (1)  
Registration card (1)  
Warranty Policy for Europe (1)  
E-7  
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Contents  
Part Names and Functions............................................................ E-9  
Projector ................................................................................................................... E-9  
Terminal Panel ................................................................................................... E-11  
Buttons and Indicator Lights .............................................................................. E-12  
Remote Controller................................................................................................... E-15  
Remote Control Operations ............................................................................... E-17  
Battery Replacement ......................................................................................... E-17  
How to Install the Projector ......................................................... E-18  
Installation Sequence ........................................................................................ E-18  
Adjusting the Tilt ................................................................................................ E-18  
Projection Distance and Projected Image Size.................................................. E-19  
Typical Installation.............................................................................................. E-20  
Compensating Keystone.................................................................................... E-21  
Connecting to a Personal Computer ........................................... E-22  
Connecting to a Personal Computer.................................................................. E-22  
About RGB Video Output................................................................................... E-23  
When Images on the Personal Computer Screen are not Projected ................. E-24  
Input Signal Compatibility Table (PC video input terminal) ................................ E-25  
Connecting to a Video Source or DVD Player.................................................... E-28  
Basic Operation........................................................................... E-29  
Preparation ........................................................................................................ E-29  
Basic Operations in the OHP Mode ................................................................... E-30  
Basic Operation of PC or Video Input ................................................................ E-37  
How to Quit ........................................................................................................ E-41  
Performing Various Adjustments........................................................................ E-42  
Menu Structure ............................................................................................. E-42  
Description of Menu Items ............................................................................ E-43  
Basic Operation ................................................................................................. E-47  
Quick Menu........................................................................................................ E-51  
Description of Menu Items ............................................................................ E-51  
Maintenance................................................................................ E-52  
Fault Protection.................................................................................................. E-52  
Lamp Unit Replacement .................................................................................... E-54  
Cleaning the Air Filter ........................................................................................ E-56  
Troubleshooting ........................................................................... E-57  
Specifications .............................................................................. E-58  
* Company names and product names herein are trademarks and registered trademarks of those  
companies.  
E-8  
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Part Names and Functions  
Part Names and Functions  
Projector  
Materials Cover  
Handle  
The scanner and printed matter is located  
under this cover.  
■ Extended  
Press lightly on the left side  
of the handle and it rotates  
180˚ and comes out.  
■ Retracted  
Rotate the handle while  
pressing on its right side to  
store it.  
See page E-31.  
Operation panel  
Buttons for operating the projector are  
located here.  
See page E-12.  
Speakers  
Air Vent A (air filter)  
Remote Control  
Sensor  
(side of main unit)  
Air is taken in through  
this vent. An air filter is  
provided to prevent  
dust from getting inside  
the projector.  
See page E-56.  
Anti-theft Lock  
See the NOTE below.  
Adjustable Feet  
Focus adjuster  
Turn this to adjust the focus.  
See page E-30.  
Tilt Adjustment Buttons  
Press this to adjust the adjustable feet.  
See page E-18.  
Projection Lens  
Images are projected through this lens.  
* Be sure to remove the lens cap when  
projecting images.  
Adjustable Feet  
These feet are for adjusting the tilt  
angle as well as the left and right  
balance of the projected image. Turning  
them counterclockwise raises the main  
unit, and turning them clockwise lowers  
the main unit.  
Lens cap  
Zoom lever  
Turn this ring to adjust the screen size.  
See page E-30.  
See page E-18.  
NOTE  
About the anti-theft lock  
The anti-theft lock is compatible with smart cable lock and other security wires.  
Contact the following for more information about the products.  
© 1998 Kensington Technology Group.  
7mm  
3mm  
Kensington Technology Group  
2855 Campus Drive  
San Mateo, CA 94403, U.S.A.  
Phone:(650)572-2700  
Fax:(650)572-9675  
E-9  
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Scanner  
Place documents or printed matter here  
to project images when OHP is selected.  
See page E-31  
Speakers  
Power (Cord connecter)  
Connect the power cord into  
this terminal.  
See page E-20.  
Sensor  
Adjustable Feet  
Adjustable Feet  
Air Vent B  
Air is discharged from the inside to the  
outside through this vent.  
I/O Terminal Panel  
Connection terminals  
for a PC or video source  
are located here.  
See page E-11.  
Lamp Unit Cover  
(bottom of main unit)  
The scanner lamp unit is housed inside  
this cover.  
See page E-54.  
E-10  
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Part Names and Functions  
■ Terminal Panel  
q
w
e
r
PC AUDIO  
IN2  
RGB-IN 2  
RGB-IN 1  
TEST  
R
RGB-OUT  
V
PC AUDIO PC AUDIO  
L
S-VIDEO  
VIDEO  
IN1  
OUT  
y
u
i
t
q PC Video Input  
w PC Audio Input  
e RGB Video Output  
Input terminal for the PC analog RGB signals. Two personal  
computers can be connected.  
Audio input terminal for a PC (stereo compatible). Two personal  
computers can be connected.  
When OHP is selected, OHP images are output. When PC/VIDEO  
input is selected, input PC video is output as it is. During standby,  
RGB-IN1 images that are input from the personal computer are  
output directly.  
r Test (maintenance)  
This exclusive terminal is used when performing maintenance and  
in-house tests. It cannot be used for other connections.  
t Audio Output  
Audio output terminal for DT20  
This terminal outputs audio (either from the PC or video source) that  
is currently being input. In the standby mode, PC audio is output.  
When OHP input is selected, PC audio is output.  
y S-VIDEO Input  
Input terminal for video source (Y/C)  
u Video Source Video Input  
i Video Source Audio Input  
Input terminal for video source (NTSC/PAL/SECAM)  
Audio input terminals for a video source (stereo compatible)  
E-11  
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■ Buttons and Indicator Lights  
q w e r  
t
POWER  
ON/  
SCROLL  
OHP  
PC1/PC2  
VIDEO  
STANDBY  
LAMP/  
COVER  
TEMP  
KEYSTONE  
MUTE  
BRIGHTNESS  
ZOOM  
MENU  
y
u
i
o
!
!
Name  
q POWER Button  
Description  
• Press this button to turn the lamp on or off.  
• Only this button can be used when the lamp is off.  
• This LED blinks for ten seconds and lights when the  
temperature inside the projector has built up.  
Page to see  
E-20, 29,  
41  
w TEMP LED  
E-52  
e LAMP/COVER LED  
• This LED lights while the lamp is on.  
• When the lamp is turned on, it blinks for about six seconds  
then remains on.  
• When the lamp is off, it blinks for about 60 seconds then  
remains off.  
E-29  
E-41  
• This LED blinks when the lamp fails to light. (The LED  
blinking pattern in this case is longer than other instances.)  
• Blinks when the lamp usage time exceeds 1400 hours, it  
remains on after lamp usage time exceeds 1500 hours.  
• Lights when the air filter cover or the lamp unit cover is not  
in place.  
E-54  
E-54, 56  
r ON/STANDBY LED  
• This LED lights (red) in a standby state, and lights (green)  
when the lamp is on.  
E-29, 41  
E-29  
t INPUT SELECT Buttons • Press this button to switch the input screen.  
(OHP, PC1/PC2, VIDEO) • When PC is selected, images from the PC input terminal  
are projected; when VIDEO is selected, images from the  
video source input terminal are projected; or, when OHP is  
selected, an image of the printed matter or document  
placed on the scanner on the main unit is projected.  
Pressing on the PC1/PC2 button when PC input is selected  
switches between PC input 1 and PC input 2.  
y KEYSTONE Button  
• Press this button to compensate keystone.  
E-21  
E-34, 40  
u MUTE Button  
• Press to stop projecting the image without turning off the  
lamp. Press it again and the image will reappear.  
BRIGHTNESS  
i BRIGHTNESS Buttons  
• These buttons adjust the brightness. Pressing the  
button darkens the projected image, and pressing the  
E-31, 37  
BRIGHTNESS  
button lightens the projected image.  
E-12  
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Part Names and Functions  
ZOOM  
o ZOOM Buttons  
• These buttons adjust the zoom ratio. Pressing the  
E-32, 38  
ZOOM  
button reduces the image, and pressing the  
button  
enlarges the image.  
! MENU Button  
! SCROLL Button  
• Display the menu display.  
• Set and select the variable and adjustable values on the  
menu display.  
E-42  
E-47  
• Move the zoom position when using the zoom display.  
• Move the pointer when the pointer is displayed.  
E-32, 38  
E-34, 38  
* Once a menu or an adjustment is displayed, their display automatically disappears, and adjustment values are  
stored to memory if buttons are not operated for about 30 seconds.  
* For details of menu adjustment, see page E-43 onwards.  
E-13  
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■ Buttons and Indicator Lights  
!
!
!
POSITION  
LIVE  
IMAGE  
RESIZE ROTATION  
V
H
REFRESH  
OHP STORED  
IMAGE  
SET  
POINTER  
VOLUME  
FREEZE  
!
!
!
Name  
Description  
Page to see  
! RESIZE Button  
• Press to change the size of the projected image when OHP  
E-33  
is selected.  
• Press to do automatic synchronous adjustments when PC  
is selected.  
E-38  
E-31  
! POSITION Buttons  
• Press to change the orientation of the projected image  
ROTATION  
when OHP is selected. Press the  
button to reverse the  
V
H
top and bottom of the projected image. Press the button  
to switch between vertical display and horizontal display.  
! LIVE IMAGE Button  
• Press to confirm the projected image while moving the  
document when OHP is selected.  
E-32  
! SET/POINTER Button  
• Press this button to apply a menu item in the menu display.  
• Display the pointer when the menu display is not displayed.  
Press it again to hide the pointer.  
E-48  
E-34, 38  
! OHP STORED IMAGE/  
• A maximum of eight pages of images are stored to internal  
memory when the display is refreshed, when OHP is  
selected. Press to access those images.  
E-33  
E-39  
VOLUME Buttons  
• Adjust the volume when PC or video is selected. Press the  
OHP STORED  
OHP STORED  
IMAGE  
IMAGE  
button to reduce the volume. Press the  
button to  
VOLUME  
VOLUME  
increase the volume.  
! REFRESH/FREEZE  
• Press to refresh the projected image when OHP is selected.  
Press it again to refresh the projected image if you have  
switched or moved the document.  
• Press to freeze the projected image when PC or video is  
selected.  
E-32  
E-39  
Button  
E-14  
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Part Names and Functions  
Remote Controller  
POWER  
MUTE  
MENU  
t
y
u
q
w
POINTER TYPE  
REFRESH  
FREEZE  
POINTER/  
SET  
e,r  
ZOOM  
!
POSITION  
RESIZE ROTATION  
V
H
i
o
!
!
!
!
!
!
!
OHP  
PC1/PC2  
VIDEO  
BRIGHTNESS  
VOLUME  
OHP STORED IMAGE  
P in P LIVE IMAGE KEYSTONE  
Name  
q POWER Button  
Description  
• Press this button to turn the lamp on or off.  
Page to see  
E-20,29,41  
• Only this button can be used when the lamp is off.  
w POINTER TYPE Button  
e POINTER/SET Button  
• Press this button to select a pointer type.  
E-34,39  
E-48  
E-34,38  
• Press this button to apply a menu item in the menu.  
• Display the pointer when the menu is not displayed. Press it  
again to hide the pointer.  
E-47  
r SCROLL Button  
• Set and select the variable and adjustable values on the  
menu display.  
• Move the zoom position when using the zoom display.  
• Move the pointer when the pointer is displayed.  
• Press to stop projecting the image without turning off the  
lamp. Press it again and the image will reappear.  
E-32,38  
E-34,38  
E-34,40  
t MUTE Button  
y MENU Button  
• Press this button to display the menu display, or select  
menus.  
• Press to refresh the projected image when OHP is selected.  
Press it again to refresh the projected image if you have  
switched or moved the document.  
E-42  
E-32  
u REFRESH/FREEZE  
Button  
E-39  
• Press to freeze the projected image when PC or video is  
selected.  
i RESIZE Button  
• Press to change the size of the projected image when OHP  
is selected.  
• Press to do automatic synchronous adjustments when PC  
is selected.  
E-33  
E-38  
o INPUT SELECT Buttons • Press this button to switch the input screen.  
(OHP, PC1/PC2, VIDEO) • When PC is selected, images from the PC input terminal  
are projected; when VIDEO is selected, images from the  
E-29  
video source input terminal are projected; or, when OHP is  
selected, an image of the printed matter or document  
placed on the scanner on the main unit is projected.  
! P in P Button  
• Press to display the image from the video source that is  
connected in a window on the lower right side of the  
projected image when PC selected.  
E-40  
E-15  
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! ZOOM Buttons  
• These buttons adjust the zoom ratio. Pressing the  
E-32, 38  
E-31  
button reduces the image, and pressing the  
button  
enlarges the image.  
! POSITION Buttons  
• Press to change the orientation of the projected image  
ROTATION  
when OHP is selected. Press the  
button to reverse the  
V
H
top and bottom of the projected image. Press the  
button to switch between vertical display and horizontal  
display.  
! BRIGHTNESS Buttons  
• These buttons adjust the brightness. Pressing the  
button darkens the projected image, and pressing the  
button lightens the projected image.  
E-31, 37  
E-39  
! VOLUME Buttons  
• Adjust the volume when PC or video is selected. Press the  
button to reduce the volume. Press the  
increase the volume.  
button to  
! OHP STORED IMAGE  
• A maximum of eight pages of images are stored to internal  
memory when the display is refreshed, when OHP is  
selected. Press to access those images.  
E-33  
Buttons  
! KEYSTONE Button  
! LIVE IMAGE Button  
• Press this button to compensate keystone.  
• Press to confirm the projected image while moving the  
document when OHP is selected.  
E-21  
E-32  
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Part Names and Functions  
■ Remote Control Operations  
• Use the remote control within about seven meters (7.7 yards) from the remote control  
sensors (on the front and rear sides) of the projector and within 10 degrees to the left and  
right. This distance may become shorter as the battery wears down.  
• The remote controller does not work if there are obstacles between the remote control and  
the remote sensor on the main unit.  
■ Battery Replacement  
1. Remove the battery compartment cover  
by pushing in the claw and lifting the  
cover up.  
2. Install two batteries in the battery com-  
partment, making sure that they are  
aligned as indicated by the (+) and (-)  
marks.  
3. Return the battery compartment cover  
to its original position.  
CAUTION  
Handling the remote controller  
• Do not subject the remote controller to such severe impact as dropping it on the floor. Doing so may damage it  
and cause it to cease functioning.  
• Keep the remote sensor away from water. Wipe the remote controller immediately if it gets wet.  
• Avoid heat or hot water. Remove the dry cells when you are not using the remote controller for a long period of  
time.  
• Do not mix new and old dry cells, or use different types of dry cells at the same time.  
• Do not disassemble or heat batteries, or throw them into a fire.  
• Follow your local government's disposal instructions for used dry cells.  
• The remote controller may not work when it is used near inverter-driven equipment.  
• The remote controller may not work or may work ineffectively when it is used near inverter-driven fluorescent  
lighting.  
NOTE  
• When replacing the batteries, buy AA batteries.  
• Ni-Cad batteries or other chargeable batteries cannot be used. Use manganese batteries or alkaline batteries.  
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How to Install the Projector  
■ Installation Sequence  
Check the  
installation site  
and image size.  
Install the input  
devices.  
Prepare the screen.  
Install the projector.  
End  
PC, video source, etc.  
See “Projection Distance and  
Projected Image Size” on page E-19.  
■ Adjusting the Tilt  
The position and tilt angle of the projected image can be adjusted by adjusting the adjustable  
feet. Press both the left and right tilt adjustment levers to lift the main unit, and release them  
when the desired height is reached.You can fine-adjust the tilt by turning the bottom section  
of the adjustable feet. Turning this section counterclockwise raises the main unit, and turning  
it clockwise lowers the main unit. Also, you can adjust the tilt angle by turning the adjustable  
foot located on the rear left of the main unit.  
Tilt adjust levers  
Extends  
foot.  
Retracts  
foot.  
Adjustable feet  
Retracts  
foot.  
Extends  
foot.  
CAUTION  
• Do not tilt the main unit at extreme angles by turning only one side of the adjustable feet. Doing so may cause the  
main unit to slip or fall down, resulting in accidents or failures.  
• Vent A on the bottom of the main unit takes in air to cool the inside of the projector. As air is taken in by large  
suction force, cloth or paper may be sucked in against the vent. If this happens, the temperature inside may build  
up, and cause an accident or failure.  
• The rubber feet may soil the installation surface depending on where the projector is installed.  
E-18  
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How to Install the Projector  
■ Projection Distance and Projected Image Size  
Use the following diagrams to determine the projected image size and the type of screen  
required for any given projector location.  
• The projection distance that provides good focusing is 1.4 m (1.5 yd) to 13.9 m (15.2 yd)  
from the front of the lens. Install the projector within this range.  
Horizontal  
Dimension  
Projected Image Size  
Projection Distance  
(1.43 m to 13.9 m/1.5 yd to 15.2 yd)  
300  
250  
200  
150  
100  
610 x 457  
508 x 381  
406 x 305  
305 x 229  
203 x 152  
Wide: The largest  
image that can be  
projected by  
adjusting the  
image with the  
zoom lens.  
Wide  
Tele: The smallest  
image that can be  
projected by  
Tele  
adjusting the  
image with the  
zoom lens.  
50  
(inch)  
102 x 76  
(cm)  
1
3
5
7
9
11  
13 13.9 (m)  
Width x Height  
Projection Distance  
CAUTION  
Installation location  
• Do not install the projector in excessively hot or cold locations. The ambient temperature should be within 0°C to  
35°C (32°F to 95°F).  
• Position the projector so that the screen does not directly receive sunlight or other light from other lighting.  
Otherwise, the projected image becomes white and is difficult to view. In a bright room, use a curtain or other  
means to darken the area around the screen.  
• Do not install the projector where it will be subject to excessive humidity, dust, or cigarette smoke.  
Otherwise, image quality may deteriorate as dirt builds up on the lens, mirrors and other optical components.  
• Do not install the projector in a small room with poor air circulation or any place where the air vents may be  
blocked. Temperature build-up inside the projector may result in fire or a failure. (Vents are located on the bottom  
and right side of the projector.)  
E-19  
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■ Typical Installation  
1. Select the installation site  
Place the projector on an even and stable surface such as a table.  
POWER  
POWER  
2. Connect the power cord (supplied), and press the  
button.)  
button (or  
90°  
3. Turn the direction of the lens so that it is perpendicular to the screen.  
Turn the unit to the left or right so that the top and bottom lines of the projected image  
are parallel.  
Adjustable feet  
4. Adjust the adjustable feet to move the projected image to the desired  
height. (Adjust the tilt angle between 0° to 7°.)  
The position of the projected image can be moved up or down by adjusting tilt.  
E-20  
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How to Install the Projector  
■ Compensating Keystone  
If the projected image is distorted, you can eliminate the distortion by doing keystone  
compensation.  
● How to Compensate Keystone  
Keystone  
KEYSTONE  
Horizontal  
0
0
KEYSTONE  
Press the  
button (or the  
button on the  
Vertical  
remote controller) to display the “Keystone  
menu.”  
MENU  
SET  
Set standard  
Quit  
Keystone menu  
Press the  
button to make the top of  
the projected image narrower.  
Press the  
button to make the  
bottom of the projected image  
narrower.  
Press the v button to make the left  
side of the projected image narrower.  
Press the u button to make the right  
side of the projected image narrower.  
MENU  
MENU  
Press the  
button (or the  
button on the remote controller) to return to “0” (No  
compensation).  
NOTE  
• When keystone compensation is performed, the resolution at the edges of the projected image is reduced, making  
small characters difficult to read. To prevent this, place the projector on as level a surface as possible, and set the  
Keystone menu to “0” (No compensation).  
• As image processing is performed for keystone compensation, displayed images (characters, etc.) are displayed  
slightly blurred when keystone compensation is used compared with when it is not used.  
• When displaying an image with VGA resolution less than 640 x 480 pixels with a excessive horizontal keystone  
compensation may cause parts of the image to become fuzzy. See page E-25 for more information.  
• The degree to which keystone compensation can be adjusted depends on the image signal.  
• If the horizontal value is adjusted to its largest (or smallest) the vertical adjustment value can not be moved in the plus  
direction when doing keystone compensation.  
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Connecting to a Personal Computer  
CAUTION  
Cautions on Connection  
• Before connecting other devices, turn off each device to protect the projector and other connected devices.  
• For details of how to connect and use devices connected to the projector, refer to the User’s Manual for each  
device.  
• Sometimes images are not displayed on the screen properly when they are displayed on a notebook PC LCD as  
well. If this happens, turn the notebook PC display off to remedy this. The method for turning off a notebook PC  
display varies according to the notebook PC manufacturer. For details, refer to the User’s Manual of the notebook  
PC.  
• You may not be able to connect the projector depending on the model of personal computer and personal  
computer settings. Consult your dealer for details.  
■ Connecting to a Personal Computer  
● List of cables and adapters  
RGB output  
Manufacturer  
Type  
Connection  
Supplied cable  
Model  
15-pin Mini D-Sub (VGA)  
Respective companies  
PC/AT  
Notebook,  
desktop  
compatible  
machine  
Apple Macintosh  
Notebook  
Power Book G3 (with Mini D-Sub 15-pin Supplied cable  
monitor output terminal)  
Power Book (excluding iBook, DUO,  
100, 140, 145B, 150, 170, etc.)  
Adapter (third party)*+ adapter +  
supplied cable  
PowerBook DUO  
Adapter (third party)*+ adapter +  
supplied cable  
* Models having no monitor output  
terminal such as iBook, Power Book  
100, 140, 145B, 150, 170 cannot be  
connected.  
* DUO Dock or Mini Dock is  
required.  
Desktop  
G3, G4 (with Mini D-Sub 15-pin monitor  
output terminal)  
Supplied cable  
Various models (excluding integrated  
monitor type)  
Adapter + supplied cable  
* Monitor integrated models such as  
iMac, Classic and some Performa  
models cannot be connected as they  
have no monitor output terminal.  
* The separate display adapter  
(Apple) is required for the  
Power Mac 6100.  
* Adapter (sold separately): Power Book exclusive adapter (Apple Power Book Video Adapter Cable M3927LL/A, or equivalent). It may be  
provided with the Power Book.  
E-22  
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Connecting to a Personal Computer  
About the PC Input and Output  
The 15-pin mini D-Sub connectors are used for the PC input and output terminals. The  
following shows the relationship between the pins and the input and output signals.  
q RED VIDEO  
w GREEN VIDEO  
e BLUE VIDEO  
r GND  
y GND  
u GND  
i GND  
o NC  
! NC  
5
4
3
2
1
! Pull up (+5V)  
! H.SYNC  
! V.SYNC  
! Pull up (+5V)  
10  
9
8
7
6
15 14 13 12 11  
t NC  
! GND  
NOTE  
• This projector uses a 15-pin RGB input and an analog type output terminals. For this reason, it cannot be  
connected to a digital output type personal computer.  
• Plug and play is not supported.  
■ About RGB Video Output  
● Signal timing  
The following shows the timing that signals are output from the RGB video output terminal.  
(XGA 60Hz speed or equivalent)  
The video signal output is determined by whether “PC/OHP” or “OHP” is selected in “RGB-  
OUT Selection” on the “Setting 2” menu. See page E-45 for more information.  
r
i
Horizontal  
sync signal  
Vertical  
sync signal  
e
u
w
y
q
t
q Cycle  
w Sync signal width  
e Back porch  
20.677 µs  
2.092 µs  
2.462 µs  
15.754 µs  
Horizontal  
sync signal  
r Display interval  
t Cycle  
806 H  
6 H  
29 H  
768 H  
Vertical  
sync signal  
y Sync signal width  
u Back porch  
i Display interval  
Scan mode  
Non-interlaced  
NOTE  
• The screen is sometimes not displayed normally depending on the monitor or projector that is connected.  
• Images from a PC are output in standby.  
E-23  
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■
When Images on the Personal Computer Screen are not Projected  
Check the following when images on the personal computer screen are not projected or  
projected images are incorrect.  
● When images are not projected  
When external output signals are input to the DT20 from the PC, “No signal” is displayed on  
the screen. When this is displayed, check the following.  
1
Try restarting the personal computer.  
The DT20 is sometimes not recognized by the PC if it is connected after the PC is started  
up. If this happens, images are not projected as external output signals are not output  
from the PC.  
2
Check the functions on the personal computer.  
Some notebook PCs require a special operation to transmit the signals from the external  
output terminal. The external output signals may not be transmitted from the notebook PC  
unless the operation is performed. Refer to the manuals of your notebook PC for the  
information about how to output signals from the external output terminal.  
Procedure example  
• In the case of IBM PC/AT:  
Fn  
F1 F12  
-
Press key together with one of the keys,  
. This procedure may  
vary depending on the model.)  
List of remedies when connection trouble with the PC occurs  
Manufacturer  
IBM  
Series  
External Output Switching Method  
Think Pad  
Fn+f7  
Fn+f4  
COMPAQ  
CONTURA  
ARMADA  
DELL  
LATITUDE  
Fn+f8  
* The above table summarizes conditions that have occurred to date; it is not a comprehensive  
summary of all connections.  
* Company names and product names listed in the above table are trademarks or registered  
trademarks of respective companies.  
●Images are not projected correctly even though they are displayed normally  
on the notebook PC screen  
1
Verify the functions of the notebook PC.  
Even if the LCD screen of a notebook PC displays normal images, the projected images  
may be displayed incorrectly. In most cases, because of the limitations of the notebook  
PC, the simultaneous display function (the external output signals are sent out  
simultaneously while the images are displayed on the PC screen) produces signals, which  
do not satisfy the standard specification and are outside the range supported by the  
projector. In this case, the incorrect display images can not be corrected even if the fine  
adjustments are made at the projector side. The correct images may be projected if only  
external output signals are provided without using the simultaneous display. Refer to the  
user’s manual of your notebook PC for details.  
E-24  
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Connecting to a Personal Computer  
■ Input Signal Compatibility Table (PC video input terminal)  
The DT20 supports the signals marked by ● in the following table. Note that on some PC mod-  
els, flickering and blurring occur in the projected image. If this happens, adjust the projected  
image in the Sync Adjustment menu.  
Resolution  
Horizontal Frequency Vertical Frequency  
Signal Name  
NTSC RGB  
Compatibility  
(Horizontal ✕ Vertical)  
(kHz)  
15.7  
15.6  
31.5  
31.5  
31.5  
31.5  
31.5  
37.8  
37.5  
43.2  
35.0  
35.1  
37.8  
48.0  
46.8  
49.7  
35.5  
48.3  
56.4  
60.0  
68.7  
60.2  
68.7  
60.0  
85.9  
64.0  
80.0  
91.1  
75.0  
81.3  
87.5  
93.8  
106.3  
(Hz)  
60  
50  
60  
70  
70  
70  
70  
72  
75  
85  
66  
56  
60  
72  
75  
74  
43  
60  
70  
75  
85  
75  
75  
60  
85  
60  
75  
85  
60  
65  
70  
75  
85  
-
-
✕
✕
●
●
●
●
●
●
●
●
●
●
●
●
●
●
✕
●
●
●
●
●
●
●
●
●
●
●
●
✕
✕
✕
✕
PAL/SECAM RGB  
VGA-GR1  
-
-
640  
480  
400  
350  
400  
350  
480  
480  
480  
480  
600  
600  
600  
600  
624  
768  
768  
768  
768  
768  
768  
864  
960  
960  
1024  
1024  
1024  
1200  
1200  
1200  
1200  
1200  
VGA-GR2*  
640  
VGA-GR3*  
640  
VGA-TX1*  
720  
VGA-TX2*  
720  
640✕480 72Hz  
640✕480 75Hz  
640✕480 85Hz  
Mac13"RGB  
640  
640  
640  
640  
800✕600 56Hz  
800✕600 60Hz  
800✕600 72Hz  
800✕600 75Hz  
Mac16"RGB  
800  
800  
800  
800  
832  
1024✕768 43Hz  
1024✕768 60Hz  
1024✕768 70Hz  
1024✕768 75Hz  
1024✕768 85Hz  
MAC19"1024✕768  
MAC21"1152✕864  
1280✕960 60Hz  
1280✕960 85Hz  
1280✕1024 60Hz  
1280✕1024 75Hz  
1280✕1024 85Hz  
1600✕1200 60Hz  
1600✕1200 65Hz  
1600✕1200 70Hz  
1600✕1200 75Hz  
1600✕1200 85Hz  
1024  
1024  
1024  
1024  
1024  
1024  
1152  
1280  
1280  
1280  
1280  
1280  
1600  
1600  
1600  
1600  
1600  
• When the input signal resolution is lower than 1024✕768 dots, enlarge the display. When it is higher,  
compress the display.  
• Signals marked with an * may become fuzzy if too much vertical keystone compensation is applied. When  
using one of these signals, set the keystone compensation so that it does not distort the image.  
E-25  
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● Basic connections  
To RGB output  
connector on PC  
To analog RGB  
connector on monitor  
The connector cable  
model No. differs  
according to the type  
of PC.  
To audio output  
terminal on PC  
Fix the connector cable using  
the screw-in fasteners.  
To speaker  
input  
terminals  
Terminal panel on the back  
of the DT20 main unit  
NOTE  
• The personal computer has input terminals for both image and sound for “1” and “2”. Hook up the sound and  
image to the corresponding terminals. If they are not hooked up to the corresponding terminals, the image and  
sound will not be output correctly.  
• See page E-11 for information about the input and output terminals.  
● Connecting to IBM NOTE and Compatible  
Signal cable (supplied)  
To RGB-IN1  
or RGB-IN2  
terminal  
DT20  
NOTE  
After you have connected the supplied cable, check the external CRT output/internal LCD output states and set the  
mode in the software running on the PC.  
The connection with the PC will not be made if you do not set the external CRT output mode.  
E-26  
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Connecting to a Personal Computer  
● Connecting to an IBM Desktop and Compatible  
Cable supplied with monitor  
To RGB-OUT  
terminal  
To RGB-IN1  
or RGB-IN2  
terminal  
Signal Cable  
(supplied)  
DT20  
NOTE  
When connecting the projector directly to the PC without using the monitor supplied with the PC, you can connect  
by the supplied cable only.  
● Connecting to Apple Macintosh Notebook  
Excluding Power Book Duo, 100, 140, 145B, 150, 170  
Signal cable  
(supplied)  
Display adapter  
for Power Book  
Conversion adapter  
(not supplied)  
To RGB-IN1  
or RGB-IN2  
terminal  
DT20  
NOTE  
• When connecting the Power Book Duo, the Duo Dock or Mini Dock is required.  
• The Power Book display adapter is sometimes not supplied with the Power Book. If it is not supplied, buy a  
separate display adapter from a Macintosh computer store. (Apple M3927LL/A or equivalent)  
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■ Connecting to a Video Source or DVD Player  
Images from a video source or DVD player can be projected on a large screen.  
V
L
R
VIDEO  
Terminal panel on the  
back of the DT20 main  
unit  
To Audio Output Terminal  
To Video Output Terminal  
Or  
DVD Player  
Video Source  
NOTE  
• When both VIDEO and S-VIDEO are connected, S-VIDEO is given higher display priority.  
• Before using the video source or DVD player, close the materials cover. (Otherwise, the glass on the scanner may  
vibrate and cause a rattling sound.)  
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Basic Operation  
Basic Operation  
■ Preparation  
2
1
1
1
Connect the power cord.  
The projector is in the standby mode, and the power indicator  
LED lights (red).  
ON/  
STANDBY  
LAMP/  
COVER  
Press the POWER button. The fan spins, the LED lights, and  
the ON/STANDBY LED lights (green).  
TEMP  
The LAMP/COVER LED lights (green).  
If the LAMP/COVER LED lights red after turning on the  
POWER button, then there is something wrong. (See page E-  
52 for details.)  
NOTE  
Make sure that the lens cap has been removed before turning on the power.  
2
Select the external input device.  
Select the video source to be displayed from OHP, PC1/PC2,  
or VIDEO.  
Main Unit Operation  
OHP  
PC1/PC2  
VIDEO  
The selected input display is displayed.  
Remote Control Operation  
OHP  
PC/video  
OHP  
PC1/PC2  
VIDEO  
See page E-30.  
See page E-37.  
NOTE  
When PC/VIDEO is selected and the device is not connected, or the connected device is not turned on, “No  
input” is displayed.  
E-29  
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■ Basic Operations in the OHP Mode  
5
3,6,7,8,9,10,  
11,12,13,14,  
15,17  
2
1
NOTE  
The projected image in the OHP display (projection of actual object) may be slightly distorted as a very wide-  
angle lens is used.  
1
2
3
Adjust the size of the projected image.  
Rotate the zoom adjuster on the projection lens to adjust the  
size of the projected image.  
Adjust the focus.  
Adjust the focus adjuster on the projection lens until the  
projected image is sharp.  
Compensate the keystone.  
Main Unit Operation  
See “Compensating Keystone” on page E-21.  
KEYSTONE  
Remote Control Operation  
KEYSTONE  
4
Check the OHP’s initial screen.  
When you select OHP, the “Set your document and press the REFRESH button” message appears  
and the projected image becomes all white, and a window that shows how the document is moving  
appears on the bottom right of the projected image.  
E-30  
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Basic Operation  
5
6
7
Set the object you want to project.  
Open the materials cover, and place the document or printed  
matter you want to project on the scanner.  
A video image of the projected material appears in the  
window.  
Close the materials cover.  
NOTE  
Objects can be projected even if the materials cover is not closed. However, unwanted objects will  
also be picked up, making the projected image difficult to view.  
Adjust the brightness.  
BRIGHTNESS  
Main Unit Operation  
Pressing the  
button (or the  
button on the remote  
BRIGHTNESS  
controller) darkens the projected image, and pressing the  
button (or the button on the remote controller) lightens  
the projected image.  
The “Brightness” value on the “Image Adjustment” menus  
changes in accordance with the brightness adjustment. See  
page E-43 for more information.  
BRIGHTNESS  
Remote Control Operation  
BRIGHTNESS  
NOTE  
When projecting dark documents or printed matter, adjust to lighten the projected image, and when projecting  
bright documents or printed matter, adjust to darken the projected image.  
Switch the orientation of the projected image.  
Orient the image in the direction of the document.  
Press the POSITION button to switch the orientation of the  
Main Unit Operation  
POSITION  
projected image.  
ROTATION  
V
H
ROTATION button: Flip the projected image top to bottom.  
V ↔ H button:  
Switch the image from a vertical to a  
horizontal display.  
Remote Control Operation  
POSITION  
ROTATION  
V
H
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8
Freeze the projected image.  
Main Unit Operation  
Press the REFRESH/FREEZE button to project a frozen  
image, of the material that you set in step five, on the white  
area of the projected image.  
REFRESH  
FREEZE  
Remote Control Operation  
REFRESH  
FREEZE  
9
Close the window.  
Press the LIVE IMAGE button to close the window that is  
displayed, the entire projected image freezes.  
Main Unit Operation  
LIVE  
IMAGE  
Remote Control Operation  
LIVE IMAGE  
10  
Adjust the zoom ratio.  
Main Unit Operation  
You can adjust the zoom between 1x to 2.5x.  
ZOOM  
Pressing the  
controller) reduces the image, and pressing the  
the button on the remote controller) enlarges the image.  
button (or the  
button on the remote  
ZOOM  
ZOOM  
button (or  
Remote Control Operation  
ZOOM  
11  
Move the zooming position.  
Main Unit Operation  
Press the arrow buttons on the remote controller to move the  
zooming position of the image. You can move in eight  
directions. (Up, down, left, right and diagonally).  
SCROLL  
Remote Control Operation  
POINTER/  
SET  
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Basic Operation  
12  
13  
Project a full-screen image.  
Main Unit Operation  
When projecting a vertical image, press the RESIZE button to  
switch between a projected image that fills the screen from  
side to side or to one that fills the screen from top to bottom.  
(You can switch them even when adjusting the zoom.)  
RESIZE  
Remote Control Operation  
RESIZE  
Make the projected image live.  
There are the two following methods to move the document  
while checking the projected image.  
Main Unit Operation  
LIVE  
IMAGE  
q Make the window live.  
Set “Window” in “Movie mode” in the quick menu (page E-  
51). Pressing the LIVE IMAGE button displays live images  
in the window on the bottom right of the image.  
w Make the entire image live.  
Remote Control Operation  
LIVE IMAGE  
Set “Full” in “Movie mode” in the quick menu (page E-51).  
Pressing the LIVE IMAGE button displays live images on the  
entire projected image at about 1 frame per second. In this  
setting, the image doesn't change even if you press the LIVE  
button.  
View OHP STORED IMAGE.  
14  
Main Unit Operation  
When you press the REFRESH button and the image  
freezes, a maximum of eight pages of the OHP images are  
stored on the internal DT20 memory.  
OHP STORED  
IMAGE  
Press the OHP STORED IMAGE button to view and change  
the stored images on the internal memory. See page E-40 for  
details.  
VOLUME  
Remote Control Operation  
button: Display the image previous to the currently  
displayed image from stored image.  
OHP STORED IMAGE  
button: Display the image following the currently dis-  
played image from stored image.  
You can switch the stored images from the quick menu (page  
E-51) when viewing the OHP stored image.  
NOTE  
• Pressing the POWER button and going into standby erases the OHP stored images.  
• The brightness can not be adjusted when viewing OHP stored image. Adjust the brightness before  
pressing the REFRESH/FREEZE button.  
E-33  
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15  
Display the pointer.  
Press the SET/POINTER button to display the pointer. Press  
it again to hide the pointer.  
Main Unit Operation  
SET  
Press the SCROLL button to move the pointer.  
POINTER  
Remote Control Operation  
POINTER/  
SET  
NOTE  
Adjusting the zoom or the brightness while the pointer is displayed may cause it to disappear momentarily, but it  
will reappear after a short time.  
16  
17  
Select the type of pointer.  
Remote Control Operation  
You can switch the type of pointer with the POINTER TYPE  
POINTER TYPE  
button on the remote controller. (Select from  
,
, or .)  
You can also select the type from “Pointer type” on the  
“Setting 2” menu. See page E-45 for details.  
Mute the image.  
Main Unit Operation  
Press the MUTE button to stop projecting the image without  
turning off the lamp.You can select the image projected while  
the image is muted from the following two images.  
q Project a completely black image while the projected  
image is muted.  
MUTE  
Remote Control Operation  
Set “Black” in “Mute mode” on the “Setting 2” menu (page  
E-45). While the image is muted, the projecting black  
MUTE  
image  
icon is displayed on the top right side of the  
projected image.  
w Project an arbitrary image while the projected image is muted.  
Set “logo” in “Mute mode” on the “Setting 2” menu (page E-  
45).  
While the image is muted, the projecting image  
displayed on the top right side of the screen.  
icon is  
NOTE  
After the projected image has been muted for a certain amount of time (about 15 minutes) it automatically goes  
into standby.  
E-34  
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Basic Operation  
Document Orientation and Scan Size  
Place the document or printed matter face down at the orientation shown in the figure below.  
The maximum size that documents or printed matter can be scanned is 216 mm/8.5 in  
(vertical) and 288 mm/11.3 in (horizontal). For this reason, the projected sizes are as follows  
when an A4-size sheet of paper is placed at the respective orientations. (Shaded section is the  
projected area.)  
A4 horizontal orientation  
297 mm/11.6 in (paper size)  
288 mm/11.3 in (scan size)  
Parts protruding outside the scan area are  
not projected on the screen. To project these  
parts, move the paper.  
Displaying Live image in the window  
While it is possible to display Live images in the window, the Live image is low resolution and is  
displayed against a background of a high definition frozen image on the main part of the  
projected image.  
When the window is displayed, the  
High definition  
“BRIGHTNESS,” “V ↔ H,” and “ROTATION”  
frozen image.  
buttons are enabled for the window, but the  
ZOOM buttons are enabled for the main part  
of the projected image. (When you press the  
Low-resolution  
Live image  
ZOOM buttons, the window disappears  
momentarily, but is displayed again after a  
short time.  
E-35  
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Displaying OHP stored image  
OHP STORED  
IMAGE  
Pressing the  
buttons display and switch the stored images in the internal memory.  
OHP STORED  
IMAGE  
VOLUME  
button: Displays the image previous to the stored image that is currently displayed.  
button: Displays the image following the stored image that is currently displayed.  
VOLUME  
OHP STORED  
IMAGE  
VOLUME  
OHP STORED  
IMAGE  
* Pressing the  
button while a stored image is not displayed causes the most recently  
VOLUME  
refreshed image that was stored to be displayed.  
When you press the REFRESH button and the image freezes, a maximum of eight pages of  
the OHP images are stored on the internal DT20 memory.  
Press the POWER button, then after selecting OHP mode, the image of the first frozen image  
is stored to position q in the diagram below. After that, every time you refresh the display the  
images are stored in the internal memory. When the stored images exceed the maximum of  
eight images the oldest images are overwritten in the order shown in the diagram below  
(starting from q).  
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
VOLUME  
VOLUME  
VOLUME  
q
w
e
r
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
VOLUME  
VOLUME  
VOLUME  
VOLUME  
VOLUME  
VOLUME  
OHP STORED  
IMAGE  
VOLUME  
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
VOLUME  
VOLUME  
VOLUME  
i
u
y
t
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
VOLUME  
VOLUME  
VOLUME  
E-36  
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Basic Operation  
■ Basic Operation of PC or Video Input  
3,4,5,6,7,  
8,10,11,13  
2
1
1
2
3
Adjust the size of the projected image.  
Rotate the zoom adjuster on the projection lens to adjust the  
size of the projected image.  
Adjust the focus.  
Adjust the focus adjuster on the projection lens until the  
projected image is sharp.  
Compensate keystone.  
See “Compensating Keystone” on page E-21.  
Main Unit Operation  
KEYSTONE  
Remote Control Operation  
KEYSTONE  
4
Adjust the brightness.  
Main Unit Operation  
BRIGHTNESS  
Pressing the  
button (or the  
button on the remote  
BRIGHTNESS  
controller) darkens the projected image, and pressing the  
BRIGHTNESS  
button (or the  
button on the remote controller) lightens the  
projected image.  
The “Brightness” value on the “Image Adjustment” menus  
changes in accordance with the brightness adjustment. See  
page E-47 for more information.  
Remote Control Operation  
BRIGHTNESS  
E-37  
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5
6
Adjust the zoom ratio.  
Main Unit Operation  
You can adjust the zoom between 1x to 4x.  
ZOOM  
Pressing the  
controller) reduces the image, and pressing the  
the button on the remote controller) enlarges the image.  
button (or the  
button on the remote  
ZOOM  
ZOOM  
button (or  
Remote Control Operation  
ZOOM  
Move the zooming position.  
Main Unit Operation  
Press the arrow buttons on the remote controller to move the  
zooming position of the image. You can move in eight  
directions. (Up, down, left, right and diagonally).  
SCROLL  
Remote Control Operation  
POINTER/  
SET  
7
8
Synchronized Adjustments  
Main Unit Operation  
Press the RESIZE button to do automatic synchronous  
adjustments of each setting to the most suitable status on the  
“Sync Adjust” menu (Page E-44).  
RESIZE  
Remote Control Operation  
RESIZE  
Display the pointer.  
Press the SET/POINTER button to display the pointer. Press  
it again to hide the pointer.  
Main Unit Operation  
SET  
Press the SCROLL button to move the pointer.  
POINTER  
Remote Control Operation  
POINTER/  
SET  
NOTE  
Adjusting the zoom or the brightness while the pointer is displayed may cause it to disappear momentarily, but it  
will reappear after a short time.  
E-38  
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Basic Operation  
9
Select the type of pointer.  
You can switch the type of pointer with the POINTER TYPE  
button on the remote controller. (Select from , or .)  
Remote Control Operation  
POINTER TYPE  
,
You can also select the type from “Pointer type” on the  
“Setting 2” menu. See page E-45 for details.  
10  
Adjust the volume.  
Main Unit Operation  
OHP STORED  
IMAGE  
Press the  
Press the  
button to reduce the volume.  
button to increase the volume.  
VOLUME  
OHP STORED  
IMAGE  
OHP STORED  
IMAGE  
VOLUME  
VOLUME  
Remote Control Operation  
VOLUME  
11  
Freeze the projected image.  
Press the FREEZE button to freeze the image from the  
personal computer or video.  
Main Unit Operation  
REFRESH  
To unfreeze the image, press the FREEZE button again, or  
press the LIVE button.  
FREEZE  
Remote Control Operation  
REFRESH  
FREEZE  
NOTE  
• You can not adjust the brightness when the image is frozen. Adjust the brightness before pressing the  
FREEZE button.  
• Press the INPUT SELECT button to unfreeze the image when it is frozen.  
E-39  
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12  
13  
Display images from the personal computer  
and the video at the same time.  
If you select personal computer input while a video source and a  
personal computer are both connected, you can display video  
images in the window at the lower right side of the projected image.  
Set “Picture in Picture” to “ON” on the quick menu to display  
video images. See page E-51 for details.  
Remote Control Operation  
P in P  
NOTE  
• The P in P button is only enabled when a personal computer is selected.You can not use it when video is  
selected.  
• You can not use the picture in picture function if the signal from the personal computer is not being input.  
Mute the image.  
Press the MUTE button to stop projecting the image without  
Main Unit Operation  
turning off the lamp.You can select the image projected while  
MUTE  
the image is muted from the following two images.  
q Project a completely black image while the projected image  
is muted.  
Remote Control Operation  
Set “Black” in “Mute mode” on the “Setting 2” menu (page  
E-45). While the image is muted, the projecting black image  
MUTE  
icon is displayed on the top right side of the projected  
image.  
w Project an arbitrary image while the projected image is  
muted.  
Set “logo” in “Mute mode” on the “Setting 2” menu (page E-  
45).  
While the image is muted, the projecting image  
icon is  
displayed on the top right side of the projected image.  
NOTE  
After the projected image has been muted for a certain amount of time (about 15 minutes) it automatically goes  
into standby.  
E-40  
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Basic Operation  
■ How to Quit  
1
2
1
Turn the lamp off.  
Press the POWER button. (Hold down for at least one  
second.)  
Main Unit Operation  
POWER  
“Press POWER button again to turn off.” is displayed on the  
projected image.  
Remote Control Operation  
POWER  
Press the POWER button again.  
The LAMP/COVER LED blinks green, and then goes out after  
about one minute.  
The ON/STANDBY LED lights (red.)  
NOTE  
The lamp will not turn on even if you press the POWER button if the LAMP/COVER LED is blinking green.  
To turn the lamp on again, press the POWER button again after the ON/STANDBY LED lights red.  
2
Disconnect the power cord.  
ON/  
STANDBY  
The ON/STANDBY LED on the operation panel goes out.  
LAMP/  
COVER  
TEMP  
CAUTION  
• Do not disconnect the power cord before the lamp goes off or the LAMP/COVER LED lights. Doing so may  
shorten the life of the lamp.  
• Disconnect the power cord from the power outlet if you are not going to use the projector for a long period of time.  
• After disconnecting the power cord from the power outlet, wait a certain period of time (about 10 seconds) before  
connecting it again.  
E-41  
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■ Performing Various Adjustments  
Menu Structure  
You can perform various adjustments and make various settings by operating the buttons  
with the menu display displayed on the projected image.  
There are two menus, the “Quick menu” on which there are frequently used items, and the  
“Main menu” on which more detailed settings can be done.  
When a personal computer or video is connected and the power is on, you can open the  
MENU  
MENU  
“Quick menu” by pressing the button (or the  
button on the remote controller.) (See  
Page E-51 for information about the Quick menu.)  
MENU  
MENU  
Press the button (or the  
button on the remote controller) again and the Main menu  
opens.You can go to the Adjust Settings menu from the Main menu display. A map of the  
menu displays is shown below.  
SET  
MENU  
MENU  
Main menu  
Menu  
S
ET/  
POINTER  
button on  
P
O
I
N
T
E
R
Image adjustment  
MENU  
Image adjustment  
Sync adjustment  
Setting 1  
(or the  
button on  
(or the  
the remote controller)  
Displayed only  
when PC input  
is selected  
0
0
0
0
Contrast  
Brightness  
Red  
the remote controller)  
Blue  
Setting 2  
Sharpness  
Image mode  
Standard  
1
2
3
4
5
Standard / Natural  
Return  
Language selection  
Projection mode  
Quit  
Image adjustment  
Displayed only  
when VIDEO  
input is selected  
0
0
0
3
0
Contrast  
Brightness  
Color  
<When PC Input is Selected>  
Sharpness  
Hue  
Standard / Natural  
Return  
Image mode  
Standard  
Image adjustment  
Displayed only  
when OHP input  
is selected  
0
0
Red  
Blue  
Image mode  
Gamma  
Standard / Natural  
PHOTO  
/
TEXT  
Standard  
Return  
MENU  
Image adjustment  
Setting 1  
Sync adjustment  
Displayed only  
when PC input  
is selected  
0
0
0
0
Clock  
Phase  
Horizontal  
Vertical  
Setting 2  
Language selection  
Projection mode  
Video select  
Quit  
Standard  
Return  
24H  
Setting 1  
Lamp usage time  
Input signal  
<When VIDEO Input is  
Selected>  
1024 x 768 / 48.6KHz 60Hz  
Auto power off  
Start-up display  
Economy mode  
ON  
ON  
ON  
/
/
/
OFF  
OFF  
OFF  
Standard  
Return  
Setting 2  
Pointer type  
RGB-OUT select  
Mute mode  
PC · OHP  
Black  
/
OHP  
Logo  
/
Standard  
Return  
MENU  
Image adjustment  
Setting 1  
Language selection  
English  
Deutsch  
Français  
Italiano  
Española  
Svenska  
Setting 2  
Language selection  
Projection mode  
Return  
Quit  
Projection mode  
Front  
<When OHP is Selected>  
Rear  
Return  
Video select  
Displayed only  
when VIDEO input  
is selected  
Auto  
NTSC 4.43  
PAL M  
PAL B,G,H,I  
NTSC 3.58  
SEC AM  
PAL N  
PAL 60  
Return  
E-42  
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Basic Operation  
Description of Menu Items  
The following describes each of the menu displays, and the items and functions that can be  
set in these menu displays. For details of how to set these menu items, see “Basic  
Operation” on page E-47.  
◆ Image Adjustment (when PC input is selected)  
Image adjustment  
Setting Item  
Description  
Menu Item  
0
0
0
0
Contrast  
Brightness  
Red  
-100 ~ +100  
Contrast  
Adjusts the contrast of the  
projected image.  
Blue  
Adjusts the brightness of the  
projected image.  
-100 ~ +100  
Brightness  
1
2
3
4
5
Sharpness  
Image mode  
Standard  
Standard / Natural  
Return  
Adjusts the depth of the color red.  
Adjusts the depth of the color blue.  
-100 ~ +100  
-100 ~ +100  
1 ~ 5  
Red  
Blue  
<Image Adjustment Menu>  
Sharpness*  
Adjusts image sharpness. The  
higher the number goes the more  
clear the image becomes. The  
standard is “3.”  
Standard/  
Natural  
Image mode  
If you want to display an image  
that has high contrast and  
sharpness select “Standard”; if  
you want to reproduce colors that  
are close to the original select  
“Natural.”  
* Sharpness is especially effective when the images are  
enlarged and zoomed or if keystone compensation has been  
done.  
◆ Image Adjustment (when VIDEO input is selected)  
Image adjustment  
Setting Item  
Description  
Menu Item  
0
0
0
3
0
Contrast  
Brightness  
Color  
-100 ~ +100 Adjusts the contrast of the  
projected image.  
Contrast  
Sharpness  
Hue  
Adjusts the brightness of the  
projected image.  
-100 ~ +100  
Brightness  
Standard / Natural  
Return  
Image mode  
Standard  
Adjusts the color of projected images.  
Adjusts image sharpness.  
-100 ~ +100  
0 ~ 6  
Color  
Sharpness  
Hue  
<Image Adjustment Menu>  
-100 ~ +100 Adjusts the hue of projected images.  
Standard/  
Natural  
Image mode  
If you want to display an image that  
has high contrast and sharpness  
select “Standard”; if you want to  
reproduce colors that are close to  
the original select “Natural.”  
E-43  
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◆ Image Adjustment (when OHP is selected)  
Image adjustment  
Setting Item  
-100 ~ +100 Adjusts the depth of the color red.  
Menu Item  
Description  
0
0
Red  
Red  
Blue  
-100 ~ +100  
Blue  
Adjusts the depth of the color blue.  
Image mode  
Gamma  
Standard / Natural  
PHOTO TEXT  
/
Standard/  
Natural  
Image mode  
If you want to display an image that  
has high contrast and sharpness  
select “Standard”; if you want to  
reproduce colors that are close to  
the original select “Natural.”  
Standard  
Return  
<Image Adjustment Menu>  
PHOTO/ The TEXT setting compensates for  
Gamma  
TEXT  
text documents, and the PHOTO  
setting compensates for photo  
documents.  
Select the setting to suit the  
document you are projecting.  
◆ Sync Adjustment (only when PC input is selected)  
Sync adjustment  
Setting Item  
Menu Item  
Clock  
Description  
0
0
0
0
Clock  
-100 ~ +100  
Adjusts the horizontal size of the  
image.  
Phase  
Horizontal  
Vertical  
-100 ~ +100  
Phase  
Adjusts noise and flickering.  
-100 ~ +100 Adjusts the horizontal position of  
the image.  
Horizontal  
Standard  
Return  
-100 ~ +100  
Vertical  
Adjusts the vertical position of the  
image.  
<Sync Adjustment Menu>  
NOTE  
Menu items sometimes cannot be adjusted within the range -100 to +100 depending on the PC input signal.  
E-44  
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Basic Operation  
◆ Setting 1  
Setting 1  
Setting Item  
Menu Item  
Description  
Lamp usage time  
Input signal  
24H  
1024 x 768 / 48.6KHz 60Hz  
ON/OFF Sets the auto power off function ON/  
OFF. When auto power off is set to  
ON, the projector automatically  
goes to standby mode if no signals  
are input for a fixed period of time  
(about 15 minutes).  
Auto power off  
ON  
ON  
ON  
/
/
/
OFF  
OFF  
OFF  
Auto power off  
Start-up display  
Economy mode  
Standard  
Return  
ON/OFF  
Start-up display  
Economy mode  
Sets whether or not to display the  
Logo while the lamp is on.  
<Setting 1 Menu>  
ON/OFF  
Sets the lamp in Economy mode.  
NOTE  
In the “Setting 1” menu, the currently set input signals and lamp usage time can be displayed for confirmation.  
◆ Setting 2  
Setting 2  
Setting Item  
Description  
Menu Item  
Pointer type  
/
/
Pointer type  
Selects a type of pointer from  
among the three types.  
PC · OHP  
Black  
/
OHP  
Logo  
RGB-OUT select  
Mute mode  
/
PC·OHP/  
OHP  
RGB-OUT  
select  
When PC·OHP is selected:  
If the input selection is OHP, then the  
image is output as an OHP image for  
which the timing is changed to (XGA  
60Hz) on page E-23.  
Standard  
Return  
<Setting 2 Menu>  
If the input selection is personal  
computer/video, then the personal  
computer image is a straight  
through output.  
When OHP is selected:  
No matter what input selection is  
made, OHP images are output at  
(XGA 60Hz) timing on page E-24.  
Sets the image to be displayed  
when the projected image is muted.  
When black is selected:  
Black/Logo  
Mute mode  
The entire projected image appears  
black.  
When Logo is selected:  
Logo is displayed.  
E-45  
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◆ Language Selection  
Language selection  
Menu Item  
Setting Item  
English  
Description  
English  
Deutsch  
Français  
Española  
Svenska  
Language  
selection  
Sets the language used in display.  
Deutsch  
Français  
Italiano  
Italiano  
Return  
Española  
Svenska  
<Language Selection Menu>  
◆ Projection Mode  
Projection mode  
Setting Item  
Menu Item  
Description  
Front  
Front  
Projection  
mode  
Adjusts the projection mode  
according to the installation  
method (front (standard)  
Rear  
Rear  
projection or rear projection).  
Return  
<Projection Mode Menu>  
◆ Video Select (only when video source input is selected)  
Video select  
Setting Item  
AUTO  
Description  
Menu Item  
Auto  
NTSC 4.43  
PAL M  
Video select  
Selects the input signal type.  
PAL B,G,H,I  
NTSC 3.58  
SEC AM  
PAL B,G,H,I  
NTSC 3.58  
SECAM  
PAL N  
PAL 60  
NTSC 4.43  
PAL M  
Return  
<Video Select Menu>  
PAL N  
PAL 60  
E-46  
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Basic Operation  
■ Basic Operation  
The following describes basic operations in the following menus: “Image Adjustment”, “Sync  
Adjustment”, “Setting”, “Language Selection”, “Video Adjustment”, and “Projection Mode” .  
MENU  
MENU  
1
Press the button (or the  
remote controller).  
The main menu is displayed.  
button on the  
Main Unit Operation  
MENU  
Image adjustment  
Sync adjustment  
Setting 1  
SCROLL  
RESIZE  
Setting 2  
MENU  
SET  
Language selection  
Projection mode  
POINTER  
Quit  
<Example: When PC input is selected>  
1
2
2
Press the  
you want to set.  
buttons to select the item  
MENU  
Image adjustment  
Sync adjustment  
Setting 1  
Remote Control Operation  
POWER  
MUTE  
MENU  
1
2
Setting 2  
POINTER TYPE  
REFRESH  
Language selection  
Projection mode  
FREEZE  
POINTER/  
SET  
Quit  
<Example: When “Sync adjustment” is selected>  
ZOOM  
POSITION  
RESIZE ROTATION  
V
H
OHP  
PC1/PC2  
VIDEO  
BRIGHTNESS  
VOLUME  
OHP STORED IMAGE  
P in P LIVE IMAGE KEYSTONE  
E-47  
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SET  
POINTER/  
SET  
3
Press the  
remote controller).  
button (or the  
button on the  
POINTER  
Main Unit Operation  
The menu for the item you want to set is displayed.  
To return to the initial settings when you bought the  
SET  
POINTER/  
SET  
projector, select “Standard” and press the  
button (or  
POINTER  
button) in the “Image adjustment”, “Sync adjustment”,  
“Setting” or “Video adjustment” menus.  
SCROLL  
RESIZE  
Sync adjustment  
0
0
0
0
Clock  
MENU  
SET  
Phase  
Horizontal  
Vertical  
POINTER  
4-1  
3
Standard  
Return  
<Example: Sync Adjustment Menu>  
Remote Control Operation  
When selecting “ON” or “OFF”.  
POWER  
MUTE  
Menu items that require selection of “ON” or “OFF” are  
MENU  
“Auto power off”, “Start up display”, and “Economy mode”.  
For details of these menu items, see page E-45.  
POINTER TYPE  
REFRESH  
FREEZE  
POINTER/  
SET  
4-1 Press the  
buttons to select the item  
3
you want to set.  
4-1  
Setting 1  
ZOOM  
Lamp usage time  
Input signal  
24H  
POSITION  
RESIZE ROTATION  
V
H
1024 x 768 / 48.6KHz 60Hz  
OHP  
PC1/PC2  
VIDEO  
BRIGHTNESS  
VOLUME  
ON / OFF  
ON / OFF  
ON / OFF  
Auto power off  
Start-up display  
Economy mode  
OHP STORED IMAGE  
P in P LIVE IMAGE KEYSTONE  
Standard  
Return  
<Example: When “Auto power off” is selected>  
E-48  
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Basic Operation  
4-2 Press the  
buttons to select “ON” or  
“OFF”.  
Main Unit Operation  
Setting 1  
Lamp usage time  
24H  
Input signal  
1024 x 768 / 48.6KHz 60Hz  
SCROLL  
RESIZE  
ON / OFF  
ON / OFF  
ON / OFF  
Auto power off  
Start-up display  
Economy mode  
MENU  
SET  
Standard  
Return  
POINTER  
4-1 4-2  
When adjusting in single point units  
Menu items that require adjustment in single point units are  
“Contrast”, “Red”, “Blue”, “Clock”, “Phase”, “Horizontal”,  
“Vertical”, “Hue”, “Color”, and “Sharpness”. For details of  
these menu items, see page E-43.  
Remote Control Operation  
POWER  
MUTE  
MENU  
4-1 Press the  
buttons to select the item  
POINTER TYPE  
REFRESH  
you want to set.  
FREEZE  
Sync adjustment  
POINTER/  
SET  
0
0
0
0
Clock  
Phase  
Horizontal  
Vertical  
ZOOM  
POSITION  
RESIZE ROTATION  
V
H
4-1  
4-2  
OHP  
PC1/PC2  
VIDEO  
BRIGHTNESS  
VOLUME  
Standard  
Return  
OHP STORED IMAGE  
<Example: When “CLOCK” is selected>  
P in P LIVE IMAGE KEYSTONE  
E-49  
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4-2 Press the  
buttons to adjust the setting.  
Main Unit Operation  
Sync adjustment  
0
0
0
0
Clock  
Phase  
Horizontal  
Vertical  
SCROLL  
RESIZE  
MENU  
SET  
Standard  
Return  
POINTER  
Others  
4-1,5 4-2 5  
Other menu items include “Language selection”, “Projection  
mode” and “Video select”. For details of menu items, see  
page E-46.  
Remote Control Operation  
POWER  
MUTE  
MENU  
4-1 Press the  
buttons to select the item  
you want to set.  
POINTER TYPE  
REFRESH  
FREEZE  
Language selection  
POINTER/  
SET  
English  
Deutsch  
Français  
Española  
Svenska  
5
ZOOM  
Italiano  
POSITION  
RESIZE ROTATION  
V
H
4-2  
4-1,5  
OHP  
PC1/PC2  
VIDEO  
BRIGHTNESS  
VOLUME  
Return  
<Example: When “English” is selected from the “Language  
Selection” menu>  
OHP STORED IMAGE  
P in P LIVE IMAGE KEYSTONE  
5
Press the  
buttons to select “Quit” and  
SET  
POINTER/  
SET  
then press the button (or  
button on the  
POINTER  
remote controller).  
This returns the display to the main menu. The display  
automatically disappears, and adjustment values are  
stored to memory if buttons are not operated for about 30  
seconds.  
E-50  
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Basic Operation  
■ Quick Menu  
The Quick menu has frequently used items. This section describes the items and functions  
that can be set on the Quick menu.  
MENU  
MENU  
Press the button (or the  
button on the remote controller) to display the quick menu.  
Description of Menu Items  
◆ When OHP Is Selected  
QUICK MENU  
Setting Item  
Menu Item  
Description  
Full  
ON  
/
Window  
OFF  
Movie mode  
Full/Window  
Movie mode  
When “Full” is selected:  
/
Scanner lamp  
The entire projected image shows  
the video image. The document  
scanning speed is 1 frame per  
second.  
Stored images clear all  
Quit  
When “Window” is selected:  
The window on the bottom right side  
of the projected image shows the  
video image. The document  
scanning speed is 20 frames per  
second.  
Sets whether the OHP scanner  
lamp is on or off.  
ON/OFF  
Scanner lamp*  
Deletes the entire OHP stored  
images from the internal memory.  
–
Stored images  
clear all  
*If the ambient temperature is low when the scanner lamp is  
turned ON, the OHP images will appear a little red.  
◆ When the OHP stored image Is Displayed  
QUICK MENU  
Menu Item  
Setting Item  
Description  
Display the next stored image  
Display the next  
–
Displays the image following the  
currently displayed image from  
stored image.  
Display the previous stored image  
stored image  
Stored images clear all  
–
–
Displays the image previous to the  
currently displayed image from  
stored image.  
Display the  
previous stored  
Quit  
image  
Deletes the entire OHP stored  
images from the internal memory.  
Stored images  
clear all  
◆ When PC Input Is Selected  
QUICK MENU  
Setting Item  
Description  
Menu Item  
Picture in Picture  
ON  
/
OFF  
ON/OFF  
Picture in Picture  
*
Set this item to ON todisplay  
images, from the video source that  
is connected, in the window on the  
lower right side of the projected  
image.  
Quit  
* Does not display without input from the computer.  
◆ When VIDEO Input Is Selected  
No quick menu.  
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Maintenance  
■ Fault Protection  
Your projector is provided with internal protection circuits for preventing fire and damage to  
internal components due to abnormal temperature.  
● When the LAMP/COVER LED is blinking:  
❍ Action  
1. Disconnect the power plug from the power outlet.  
2. Correctly install the air filter. For details, see “Cleaning the Air Filter” on page E-56.  
3. Correctly install the lamp unit cover. For details, see “Lamp Unit Replacement”  
on page E-54.  
● When the temperature LED is blinking or on.  
❍ Action  
1. Disconnect the power cord from the power outlet.  
2. Check the following and take corrective actions.  
Is the ambient temperature  
more than 35°C(95°F)?  
Use your projector within an ambient temperature of  
0°C to 35°C (32°F to 95°F).  
Are any vent holes blocked?  
Is the air filter clogged?  
Place your projector away from walls and other objects.  
See “Do not block the air vents” on page E-4.  
Clean the air filter.  
See “Cleaning the Air Filter” on page E-56.  
A probable cause is an  
internal circuit problem.  
Ask your dealer for repair.  
* When the TEMP LED is OFF, your projector is working properly.  
* Replace the lamp at the same time when the LAMP/COVER LED is on.  
For details on how to replace the lamp, see page E-54.  
* A blinking TEMP LED is a warning that the temperature is too high. If the operating  
environment improves within 10 seconds after the LED starts blinking, the warning will  
stop. (When the TEMP LED goes out, normal operation continues.)  
If the TEMP LED blinks for more than 10 seconds and the operating status does not  
change, the LED stops blinking and stays on and the lamp turns off.  
E-52  
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Maintenance  
● When the power fails (all LEDs are off when the power is turned ON)  
❍ Action  
1.Disconnect the power plug from the power outlet.  
2.Check the following and take corrective actions.  
Is the ambient temperature  
more than 35°C (95°F)?  
Use your projector within an ambient temperature of  
0°C to 35°C (32°F to 95°F).  
Are any vent holes blocked?  
Place your projector away from walls and other  
objects.  
See “Do not block the air vents” on page E-4.  
A probable cause is an  
internal circuit problem.  
Call qualified service personnel.  
E-53  
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■ Lamp Unit Replacement  
The target replacement time of the lamp used on this projector is 1400 hours. (This may be  
shortened depending on the conditions of use.) Since there is a high possibility of lamp  
explosion if the cumulative usage time exceeds more than 1500 hours, the power to the  
lamp is cut off at 1500 hours.In the following instances where the cumulative usage time of  
the lamp is more than 1400 hours, replace the lamp unit (sold separately). When the  
projected image becomes dark or projected colors are unsatisfactory, the lamp has reached  
the end of its life. In this case, replace the lamp unit.  
● When the message shown below is displayed while the lamp is on (This appears when  
the cumulative usage time of the lamp is more than 1400 hours.)  
Lamp usage 1400 hours.  
Replace the lamp.  
● When “Lamp usage time” on the menu display has reached 1400 hours, the LAMP/  
COVER LED blinks red.  
The lamp usage time is displayed in the “Setting 1” menu for confirmation. (For details,  
see page E-45.)  
● When the LAMP/COVER LED is on red without the lamp lighting.  
(When the cumulative usage time of the lamp is more than 1500 hours.)  
ON/  
STANDBY  
LAMP/  
COVER  
TEMP  
WARNING  
• Do not replace the lamp unit immediately after you have turned the projector off.  
The lamp becomes very hot and may cause a burn injury. Turn off the lamp, disconnect the power cord from the  
power outlet, and then wait at least one hour before replacing the lamp.  
• Do not touch the lamp with your hands. This may result in reduced brightness or reduced lamp life.  
• This projector contains many glass components (e.g. a lamp and mirrors). If these glass components break,  
handle them with care to prevent personal injury from glass fragments. Contact your dealer or an NEC qualified  
service presonnel for repair.  
CAUTION  
• This lamp unit is not compatible with the lamp unit for DT100. Specify the exclusive lamp unit DT02LP.  
Procedure  
1
Remove the lamp unit cover.  
Loosen the lamp unit cover screws using a flathead  
screwdriver.  
E-54  
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Maintenance  
2
3
4
Loosen the lamp unit retaining screws.  
Loosen the lamp unit screws. (2 pieces)  
Draw out the lamp unit.  
Hold the handle and lift the lamp unit upward.  
Install a new lamp unit.  
q Hold the lamp unit and push it in.  
w Make sure that the two positioning protrusions fit  
properly into the holes.  
e Tighten the two lamp unit retaining screws.  
r Align the three tabs on the lamp unit cover with the  
slots on the projector to attach it. Then tighten the  
two lamp unit cover retaining screws.  
5
6
Reset the lamp usage time.  
OHP  
PC1/PC2  
VIDEO  
Perform the following in the standby state.  
MENU  
VIDEO  
PC1/PC2  
OHP  
Press the  
,
and  
buttons once in that order with  
MENU  
the button held down.  
The LAMP/COVER LED then blinks green.  
q
w
e
CAUTION  
Do not reset the lamp usage time without replacing the lamp.  
The probability of a lamp explosion increases if the  
cumulative usage time of the lamp is more than 1500 hours.  
Verify that the display of lamp usage time  
in the Lamp Setting menu is “0H” as  
shown to the left.  
If the lamp usage time is not reset, reset it by repeating  
step 5.  
Setting 1  
Lamp usage time  
Input signal  
0H  
1024 x 768 / 48.6KHz 60H  
ON  
ON  
ON  
/
/
/
OFF  
OFF  
OFF  
Auto power off  
Start-up display  
Economy mode  
Standard  
Return  
CAUTION  
Be sure to reset the lamp usage time after replacing the  
lamp. Otherwise, the correct usage time cannot be known.  
When the display exceeds 1500 hours, the power to the lamp  
is forcibly turned off regardless of the lamp’s life.  
NOTE  
• As a safety precaution, the lamp does not turn on unless the lamp unit cover is installed.  
• The lamp unit sold separately comes with an air filter as part of the lamp kit. When replacing the lamp unit, be  
sure to replace the air filter as well. (See page E-56.)  
• The lamp can be disposed as a regular household fluorescent light, follow the disposal procedure recommended  
by the local government.  
E-55  
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■ Cleaning the Air Filter  
The air filter is an important part as it keeps the optical components inside your projector  
free from dirt and dust. A clogged air filter can cause the temperature to rise inside your  
projector and the fan speed to increase. This, in turn, may reduce lamp life or cause the  
projector to malfunction. The air filter should be cleaned regularly (about once a month if  
the projector is used four hours a day).  
Replace with a new air filter if it is difficult to remove dust and dirt from the air filter.  
Procedure  
1
2
Remove the air filter.  
To remove the air filter, press down on the claw on the  
air filter while pulling it outwards.  
Vacuum the sponge to take off dust.  
Vacuum the outside surface of the sponge as shown in  
the illustration.  
3
Mount the air filter.  
Follow step 1 in reverse order.  
Press it in until you hear a “click” sound.  
CAUTION  
Caring for the Air Filter and Cautions  
• Do not wash the air filter with water or other liquids. This may cause the filter to clog.  
• Do not wipe the air filter with a cloth or a wet rag as this, too, may cause the filter to clog.  
• Always vacuum from the outside of the air filter. If you vacuum from the inside of the air filter, this will reduce the  
effectiveness of the air filter.  
• Do not forget to install the air filter. If the projector is left without the air filter installed, dust may enter the projector  
and cause dirty projected images.  
• When the air filter becomes damaged, be sure to replace it with a new one (sold separately). If the projector is  
used with the air filter damaged, dust may enter the projector and cause dirty projected images.  
NOTE  
The lamp will not light unless the air filter is mounted.  
E-56  
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Troubleshooting  
Troubleshooting  
If you think a problem has occurred, check the following items before asking for a repair.  
To be Checked  
Symptom  
Page(s)  
E-20  
• Verify that the power cord is connected.  
• Verify that the lamp has not blown.  
• Verify that the lamp unit cover is installed.  
• Verify that the air filter is installed.  
Power is not on.  
The projection lamp does not light.  
E-54  
E-54  
E-56  
• Verify the internal temperature. The lamp does not light due to a  
protection control if the temperature is too high.  
• Verify that the lamp usage time is less than 1500 hours.  
• Verify the selection of the connected input.  
• Verify that the cable for the connected device is appropriately  
connected.  
E-52  
E-54  
E-29  
No image is displayed.  
E-22, 28  
• Verify sure that Brightness or Contrast in the Image Adjustment  
menu is not set to minimum.  
E-43  
• Verify that the resolution on the PC is correctly set.  
• Verify the functions of the PC.  
E-24  
E-24  
• Verify that the projector is placed properly.  
• Keystone compensation may be applied.  
• Check the focus.  
The image is distorted.  
The image is blurred.  
E-20  
E-21  
E-30, 37  
E-19  
• Make sure that the projection distance is within the focusing  
distance.  
• Keystone compensation may be applied.  
• Verify whether the lens cap is on.  
E-21  
E-29  
E-44  
E-44  
E-44  
E-39  
• Adjust Phase in the Sync Adjustment menu.  
• Check the setting of the Sync Adjustment menu.  
• Adjust Phase in the Sync Adjustment menu.  
• Make sure that the setting in the Volume menu is not set to  
minimum.  
The image is flickering.  
The image is out of alignment.  
The color is out of alignment.  
No sound.  
• A sound is produced when the cabinet slightly expands or contracts  
due to the changes in the room temperature. This will not affect  
projector performance.  
The cabinet produces a cracking  
sound.  
• Follow the procedures for protection against overheating.  
• Make sure that the air filter is not disconnected.  
• Make sure that the lamp unit cover is in place.  
• Check whether the lamp usage has exceeded 1500 hours.  
• Make sure that the battery is not blown or worn.  
• Make sure that other light from lighting, for example, is not entering  
the remote control sensor.  
The TEMP LED lights up or blinks.  
The LAMP/COVER LED lights red.  
E-52  
E-56  
E-54  
E-54  
The remote controller does not  
work.  
E-17  
E-9, 10  
• Make sure that the remote control sensor of the main unit is not  
obstructed.  
E-9, 10  
E-17  
• Make sure that the projector is not installed near inverter-driven  
equipment.  
• Press the RESIZE button to do automatic synchronous adjustment.  
• Make adjustments on the “Synch adjustment” menu.  
The image may not be positioned  
correctly or the display may be  
compressed, when personal  
computer input is selected.  
E-38  
E-44  
E-57  
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Specifications  
Specifications  
Model Name  
DT20  
Type  
3 primary Color LCD Shutter Projection Type  
1.0 inches x 3 Panels, Aspect Ratio 4:3  
Poly Silicon TFT Active Matrix with Micro Lens Array  
786,432 pixels (1,024 x 768 dots)
ן
3  
Stripe  
Manual Zoom: 1 to 1.25x, f=36.5 mm to 45.6 mm, F1.7 to 2.2  
260W Super High-pressure Mercury Lamp  
32-300 inches diagonal (projection distance 1.4 to 13.9 m)  
Full color (16,770,000 colors)  
LCD Panel Size  
Drive System  
Number of Pixels  
Arrangement  
Projection Lens  
Optical Source  
Image Size  
Color Reproducibility  
Brightness  
2800 ANSI lumens  
Scan Frequency  
Horizontal 21 to 80 kHz, Vertical 50 to 85 Hz  
Maximum Resolution At RGB signal input 1,024
ן
768 dots (Compressed display of 1,600
ן
1,200 dots is possible.)  
OHP  
Scanner  
2 Mega-pixels color CCD camera  
288 mm
ן
216 mm (11.3 in
ן
8.5 in)  
Separate Signal System  
PC  
(Analog  
RGB Input  
Signal system  
Video signal  
Sync Signal  
Analog: 0.7Vp-p/75Ω  
)
Separate/composite: TTL Level (positive/negative)  
Sync on green: 0.3 Vp-p (Negative)  
15 pin Mini D-sub 2 ch  
NTSC/PAL/SECAM/PAL-N/PAL-M/PAL60/NTSC4.43  
RCA Pin Jack 1 ch, S-Video (Mini DIN4-pin) 1ch  
0.7Vp-p/75Ω  
Separate TTL Level, Negative Polarity  
15 pin Mini D-sub 1 ch  
0.4Vrms/47KΩ  
Stereo Mini Jack 2 ch  
Terminal Panel  
Signal system  
Input Terminal  
Video signal  
Video  
Monitor  
Output  
Sync Signal  
Output Terminal  
Audio Signal  
Input Terminal  
Audio Signal  
Input Terminal  
Audio Signal  
Output Terminal  
PC  
Video  
0.4Vrms/47KΩ  
RCA Pin Jack 1 ch  
0.4Vrms/47KΩ  
Stereo Mini Jack 1 ch  
Monitor  
Output  
Audio Output  
1 W
ן
2 stereo  
Operating Range of Temperature and Humidity  
Power Source  
Power Consumption  
Input Current  
External Dimensions (mm/in)  
Temperature: 0 to 35°C (32 to 95°F), humidity: 20 to 80% (no condensation)  
100-120/220-240VAC , 50/60 Hz  
390W (100-120VAC), 370W (220-240VAC)  
4.5A (100-120VAC), 2.2A (220-240VAC)  
400 (W)
ן
315 (D)
ן
145 (H) /15.7 (W)
ן
12.4 (D)
ן
5.7 (H)  
(not including protrusions, Including the cover)  
7.3kg  
Weight  
Accessories  
Power Cord (3 m/3.3 yd), Remote Control, User's Manual, Warranty, Battery  
(AA x 2), PC cable, Lens cap  
Regulation  
UL Approved (UL 60950, CSA 950)  
Meets DOC Canada Class A requirements  
Meets FCC Class A requirements  
Meets AS/NZS3548 Class A  
Meets EMC Directive (EN55022, EN55024, EN61000-3-2, EN61000-3-3)  
Meets Low Voltage Directive (EN60950, TUV GS Approved)  
Specifications and designs are subject to change without prior notice in order to improve the product.  
•
For additional information visit:  
US : http://www.necvisualsystems.com/  
Europe : http://www.nec-europe.com/  
Global : http://www.nec-pj.com/  
LCD panels are inherently susceptible to pixel defects.  
For additional information regarding pixel data, please contact your local NEC sales office.  
The specifications are subject to change without notice.  
E-58  
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