NEC Projector LT20 User Manual

							7... English
Control Panel
1. Lamp Indicator LED
2. Status Indicator LED
3. Power Indicator LED
4. Enter
5 . Keystone Correction
6 . Exit
7. Source
8. On/Standby
9 . Four Directional  Select Keys
10. Menu
11. Auto Adjustment
Introduction
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Introduction
Connection Ports
1. KensingtonTM Lock Port
2 . For Service Use Only
3. S-Video Input Connector
4. Composite Video Input Connector
5. VGA Connector (PC Analog Signal/HDTV/Component Video
Input)
6 . Remote Sensor
7. AC Inlet
2354176 
						

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Remote Control
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1. IR LEDS
2. Auto Adjustment
3. Power
4 . Keystone Correction
5 . Exit
6. Aspect Ratio
7 . Freeze
8. Source
9. Four Directional  Select
Keys
10. Menu
11. Enter
12. Picture Mute
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Introduction
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1. .............................................................................................................Power Cord
2. ..............................................................................................................VGA Cable
3. .........................................................................................Composite Video Cable
4. .........................................................................................................S-Video Cable
Connecting the Projector
™To ensure the projector works well with your computer, please
set the display mode of your graphic card less than or equal to
1024 X 768 resolution. Make sure the timing of the display mode is
compatible with the projector.  Refer to the “Compatibility Modes”
section on page 31.
S-Video Output
Video Output
Installation
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Installation
On/Standby
Powering On the Projector
1.Remove the lens cap.
2.Ensure that the power cord and signal cable are securely
connected.  The Power LED will turn orange.
3.Turn on the lamp by pressing “On/Standby” button on the
control panel. n And the Power LED will flash green.
The startup screen will display for 20 seconds and the
Power LED will turn green.
4.Turn on your source (computer, notebook, video player,
etc.).  The projector will detect your source automatically.
™If the screen displays “No Input”,  please make sure the signal
cables are securely connected.
™If you connect multiple sources at the same time, use the
“Source” button on the remote control or control panel to select
your desired source.
Powering On/Off the Projector
™Turn on the
projector first and then
the signal sources.
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Installation
Warning Indicator
™When the “LAMP” indicator lights solid red, the projector will
automatically shut itself down.  Please contact your local
reseller or service center.
™When the “STATUS” indicator lights solid red, it indicates the
projector has been overheated.  You will see a message “Projec-
tor Overheated” on the on-screen display.  The projector will
automatically shut itself down.
Under normal conditions, the projector can be switched on
again after it has cooled down.  If the problem persists, you
should contact your local dealer or our service center.
™When the “STATUS” indicator flashes red for about 10
seconds, you will see a message “The cooling fan has stopped”
on the on-screen display.  Please contact your local dealer or
our service center.
Powering Off the Projector
1.Press the “On/Standby” button to turn off the projector
lamp, you will see a message “Power Off” on the on-screen
display.
2.Press the “On/Standby” button again to confirm.
Otherwise the message will disappear after 5 seconds.
3.The cooling fans continue to operate  for about 100 seconds
for cooling cycle and the Power LED will flash orange.
When the light stops flashing and turns orange, the
projector has entered standby mode.
If you wish to turn the projector back on, you must wait
until the projector has completed the cooling cycle and has
entered standby mode.  Once in standby mode, simply
press “On/Standby” button to restart the projector.
4.Disconnect the power cord from the electrical outlet and
the projector.
5.Do not turn on the projector immediately following a
power off procedure. 
						

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Adjusting the Projected Image
Adjusting the Projector Image Height
Tilt Adjusting Wheel Elevator Foot
1
2
3
Elevator Button
The projector is equipped with an elevator foot for adjusting
the image height.
To raise the image:
1.Press the elevator button 
n.
2.Raise the image to the desired height angle o, then release
the button to lock the elevator foot into position.
3.Use
p to fine-tune the display angle.
To lower the image:
1.Press the elevator button.
2.Lower the image, then release the button to lock the elevator
foot into position.
3.Use
p to fine-tune the display angle.
Installation 
						

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63.4"
(160.9cm)105.6"
(268.2cm)147.8"
(375.5cm)169.0"
(429.2cm)211.2"
(536.5cm)
36.9"
(93.8cm)73.8"
(187.5cm)123.0"
(312.5cm)172.2"
(437.5cm)196.9"
(500.0cm)246.1"
(625.0cm)
4.92'
32.81' 26.25' 22.97' 16.40'9.84'(1.5m)
(10.0m) (8.0m) (7.0m) (5.0m) (3.0m)31.7"
(80.5cm)
Max.36. 9"(93.8cm)73. 8"(187. 5cm)123.0"(312.5cm)172.2"(437.5cm)196.9"(500.0cm)246.1"(625.0cm)
Min. 31. 7"(80.5cm) 63. 4"(160. 9cm) 105.6"(268.2cm) 147.8"(375.5cm) 169.0"(429.2cm) 211. 2"( 536. 5cm)
Max.(WxH)29. 52" x 22.14"
(75. 0 x 56. 3cm)59. 04" x 44.28"
(150.0 x 112.5cm)98. 40" x 73.80"
(250.0 x 187. 5cm)137.76" x 103.32"
(350.0 x 262. 5cm)157.52" x 118.14"
(400.0 x 300. 0cm)196.88" x 147.66"
(500.0 x 375. 0cm)
Min.(WxH)25. 36" x 19.02"
(64. 4 x 48. 3cm)50. 72" x 38.04"
(128.7 x 96.5cm)84. 48" x 63.36"
(214.6 x 160. 9cm)118. 24" x 88.68"
(300.4 x 225. 3cm)135.20" x 101.40"
(343.4 x 257. 5cm)168.96" x 126.72"
(429.2 x 321. 9cm)
4.92'(1.5m)9.84'(3.0m)16. 40'(5. 0m)22.97'(7.0m)26. 25'(8. 0m)32.81'(10.0m)
Focus Ring Zoom Lever
Adjusting the Projector Zoom / Focus
You may turn the zoom lever to zoom in or out.  To focus the
image, rotate the  focus ring until the image is clear. The projec-
tor will focus at distances from 4.9 to 32.8 feet (1.5 to 10.0 meters).
Adjusting Projected Image Size
Screen
(Diagonal)
Screen
Size
Distance
™This graph is for user’s reference only.
Installation
Diagonal 
						

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User Controls
Remote Control Control Panel
Control Panel & Remote Control
There are two ways for you to control the functions: Remote
Control and Control Panel.
Using the Control Panel
On/Standby
Refer to the “Powering On/Off the Projector” section on pages
11-12.
Source
Press “Source” to choose RGB, Component, HDTV, Composite
video and S-video sources.
Menu
Press “Menu” to launch the on-screen menu  (OSM).
Keystone / 
Adjusts image distortion caused by tilting the projector (±8
degrees).
Four Directional Select Keys
Use to select items or make adjustments to
your selection.
Enter
Confirm your selection of items. 
						

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User Controls
Using the Remote Control
Power
Refer to the “Powering On/Off the Projector” section on pages
11-12.
AUTO ADJ. (Auto adjustment)
Automatically synchronizes the projector to the input source.
Keystone
Adjusts image distortion caused by tilting the projector (±8
degrees). Press the gyro-wheel first, and then slip up or down.
Source
Press “Source” to choose RGB, Component, HDTV, Composite
video and S-video sources.
PIC-MUTE (Picture Mute)
Press “PIC-MUTE” to hide image, press again to restore
display of the image.
Freeze
Press “Freeze” to pause the screen image.
Aspect Ratio
Selects the desired aspect ratio.
Menu
Press “Menu” to launch the on-screen display menu.
Four Directional Select Keys
Use to select items or make adjustments to
your selection.
Enter
Confirm your selection of items.
Exit
 Exit the OSM menu.
AUTO ADJ. (Auto adjustment)
Automatically synchronizes the projector to the input source.
Exit
 Exit the OSM menu.
™“..” should be
pressed, the keystone
could be adjust.