Mitsubishi Tx20u Projector User Manual

							Installation (continued)
EN-11
When the aspect ratio of the screen is 4:3
When the aspect ratio of the screen is 4:3, the positional relation between the 
projected image and the screen is as shown on the right. Refer to the following table 
for installation.
When the aspect ratio of the image is 16:10 (WXGA)
 The above figures are approximate and may be slightly different from the actual measurements.
When the aspect ratio of the image is 16:9
 The above figures are approximate and may be slightly different from the actual measurements.Screen size Size of the projected image
Blank space:
BProjection distance: L
Hd
4:3 
diagonal sizeWidth: SW Height: SH16:10
diagonal sizeWidth: W Height: HShortest 
(Wide)Longest 
(Tele)
inch cm inch cm inch cm inch cm inch cm inch cm inch cm inch m inch m inch cm
40 102 32 81 24 61 38 96 32 81 20 51 2 5 47 1.2 59 1.5 2.5 6
60 152 48 122 36 91 57 144 48 122 30 76 3 8 71 1.8 89 2.2 3.8 10
80 203 64 163 48 122 75 192 64 163 40 102 4 10 96 2.4 118 3.0 5.0 13
100 254 80 203 60 152 94 240 80 203 50 127 5 13 120 3.0 148 3.8 6.3 16
120 305 96 244 72 183 113 288 96 244 60 152 6 15 144 3.7 178 4.5 7.5 19
150 381 120 305 90 229 142 359 120 305 75 191 8 19 180 4.6 223 5.7 9.4 24
200 508 160 406 120 305 189 479 160 406 100 254 10 25 240 6.1 297 7.5 12.5 32
250 635 200 508 150 381 236 599 200 508 125 318 13 32 301 7.6 372 9.4 15.6 40
300 762 240 610 180 457 283 719 240 610 150 381 15 38 361 9.2 - - 18.8 48
Screen size Size of the projected image
Blank space:
BProjection distance: L
Hd
4:3 
diagonal sizeWidth: SW Height: SH16:9
diagonal sizeWidth: W Height: HShortest 
(Wide)Longest 
(Tele)
inch cm inch cm inch cm inch cm inch cm inch cm inch cm inch m inch m inch cm
40 102 32 81 24 61 37 93 32 81 18 46 3 8 46 1.2 57 1.5 3.5 9
60 152 48 122 36 91 55 140 48 122 27 69 5 11 69 1.8 86 2.2 5.3 13
80 203 64 163 48 122 73 187 64 163 36 91 6 15 93 2.4 115 2.9 7.0 18
100 254 80 203 60 152 92 233 80 203 45 114 8 19 116 3.0 144 3.7 8.8 22
120 305 96 244 72 183 110 280 96 244 54 137 9 23 140 3.6 173 4.4 10.5 27
150 381 120 305 90 229 138 350 120 305 68 171 11 29 175 4.4 217 5.5 13.1 33
200 508 160 406 120 305 184 466 160 406 90 229 15 38 234 5.9 289 7.3 17.5 44
250 635 200 508 150 381 229 583 200 508 113 286 19 48 293 7.4 361 9.2 21.9 56
300 762 240 610 180 457 275 699 240 610 135 343 23 57 351 8.9 - - 26.3 67
SW=W
H SH
B
B
Screen size 
						

							EN-12
Installation (continued)
When entire projected image isn’t 
displayed within the screen 
(DIGITAL ZOOM)
To adjust the projected image size and position, use 
DIGITAL ZOOM function.
1. Press the DIGITAL ZOOM button.
 The DIGITAL ZOOM menu appears at the center
of the screen.
2. Press the + or - button to adjust the projected image
size.
 Every time the + button is pressed, the projected
image becomes larger.
 Every time the - button is pressed, the projected
image becomes smaller.
 Projected image is a maximum as factory default
(0).
3. Press the ENTER button.
 The SHIFT menu appears at the center of the
screen.
4. Press the S,T,W or X button to move the projected
image position.
 Every time the S button is pressed, the projected
image moves up.
 Every time the T button is pressed, the projected
image moves down.
 Every time the W button is pressed, the projected
image moves to the left.
 Every time the X button is pressed, the projected
image moves to the right.Important:
 When you reduce the projected image using the 
DIGITAL ZOOM function, the resolution decreases.
In addition, stripes may appear or straight lines may
bend in images with complicated patterns.
 When you use DIGITAL ZOOM and KEYSTONE in
combination, the adjustable range becomes
narrower than that when these functions are used
individually.
Changing the AUTO POWER OFF 
setting
The AUTO POWER OFF function of this projector is 
enabled by default. 
Change the AUTO POWER OFF setting as necessary.
(See page 28.)
 
To change the AUTO POWER OFF setting: 
(See page 25 for menu setting.)
1. Display the INSTALLATION menu.
2. Select AUTO POWER OFF by pressing the S or T
button.
3. Select your desired item by pressing the W or X
button. 
Important:
 This function does not work when the input source is
LAN DISPLAY, USB DISPLAY or USB VIEWER.
 The AUTO POWER OFF function does not work
during AV MUTE.
Setting IMAGE REVERSE
Set IMAGE REVERSE in the INSTALLATION menu 
according to the orientation of the projector. The default 
setting is OFF. 
 Select OFF for the combination of floor installation
and front projection. 
 Select MIRROR INVERT for the combination of
ceiling installation and front projection. 
 Select MIRROR for the combination of floor
installation and rear projection.
 Select INVERT for the combination of ceiling
installation and rear projection.
(See page 25 for menu setting.)
1. Display the INSTALLATION menu.
DIGITAL ZOOM
10
ENTER: SHIFT
DIGITAL ZOOM
10
ENTER: SHIFT
Original image size 
(= maximum image size)
Reduced image
SHIFT
ENTER: DIGITAL ZOOM
SHIFT
ENTER: DIGITAL ZOOM
Adjustable in any 
of four directions 
						

							Installation (continued)
EN-13
2. Select IMAGE REVERSE by pressing the S or T
button.
3. Select OFF, MIRROR, INVERT or MIRROR INVERT
by pressing the W or X button.
Front projection, ceiling mounting
For ceiling mounting, you need the ceiling mount kit 
designed for this projector. Ask a specialist for 
installation. For details, consult your dealer.
 The warranty on this projector does not cover any
damage caused by use of any non-recommended
ceiling mount kit or installation of the ceiling mount
kit in an improper location.
 When using the projector mounted on the ceiling,
set IMAGE REVERSE in the INSTALLATION menu to
MIRROR INVERT. See page 28.
 When the projector is mounted on the ceiling,
images may appear darker than those projected in
the case of tabletop mounting. This isn’t a product
malfunction.
Ceiling mount installation
If you wish to install the projector using a ceiling mount, 
please use the screw holes as the illustration shows.
Important:
 Screws are not included. Please obtain the 
appropriate screws for your type of ceiling. (M4 
diameter)
 It is recommended that you keep a reasonable 
space between the bracket and the projector to 
allow for proper heat distribution.
Caution:
 Installation must be done by a qualified professional. 
When the project is installed on the ceiling using the 
ceiling mount kit, it is recommended to hold the 
mount kit and the projector using a metal bar or wire in addition to the mount kit fixing screws to prevent 
the projector from falling due to an earthquake or 
other cause. For that purpose, use a metal bar, wire, 
or screw that bears a load of at least 40kgf. When 
using a metal wire, secure one end to a screw hole 
marked with an arrow on the rear terminal panel and 
the other end to the mount kit. (Don’t use screw 
holes without arrow marks.) On this case, make sure 
that the screw is inserted in the projector at least 
5mm. The length of the screw should be 20 mm or 
shorted. Also make sure that no electrical current is 
flowing in the mount kit due to current leakage or 
other cause.
Rear projection
Ask a specialist for installation. For details, consult your 
dealer.
 For rear projection, set IMAGE REVERSE in the 
INSTALLATION menu to MIRROR. See page 28.
Caution:
 Placing the projector directly on a carpet impairs 
ventilation by the fans, causing damage or failure. 
Put a hard board under the projector to facilitate 
ventilation.
 Place the projector at least 50 cm (or 20 inch) away 
from the wall to prevent the air inlet grille and the air 
outlet grilles that emit hot air from being blocked.
 Do not use the projector in the following locations 
and manners, which may cause fire or electric 
shock.
 In a dusty or humid place.
 In a sideways or upside-down position.
 Near a heater.
 In an oily, smoky, or damp place such as a
kitchen.
 In direct sunlight.
 Where the temperature rises high, such as in a
closed car.
 Where the temperature is lower than +41°F (or
+5°C) or higher than +95°F (or +35°C ).
Important:
 Do not apply force to the lens, because the lens may 
be damaged.
 Be sure to use this projector at an altitude of less 
than 1500 meters. 
						

							EN-14
This projector can be connected with various devices such as a VCR, video camera, videodisc player, and personal 
computer that have analog RGB output connectors.
Important: 
 Make sure that the connected device is turned off before starting connection.
 Plug in the power cords of the projector and the connected devices firmly. When unplugging, hold and pull the
plug. Do not pull the cord.
 When the projector and the connected devices are located too close to each other, the projected image may be
affected by their interference.
 See the owner’s guide of each device for details about its connections.
Projector + AV device
Important: 
 Match the colors of the video and audio plugs on the Audio cable with those of the terminals.
 Speaker output is mono.
Projector + DVD player or HDTV decoder
Some DVD players have an output connector for 3-line fitting (Y, CB, CR). When connecting such DVD player with this 
projector, use the COMPUTER/COMPONENT VIDEO IN terminal.
Important: 
 The terminal’s names Y, P
B, and PR are given as examples of when a HDTV decoder is connected.
 The terminal’s names vary depending on the connected devices.
 Use a Mini D-SUB 15-pin - BNC conversion cable for connection.
 Image may not be projected correctly with some DVD players.
 When connecting a HDTV decoder having RGB output terminals, set COMPUTER INPUT to RGB in the SIGNAL
menu.
S-VIDEO 
(option)
VIDEO
(option)
AUDIO IN 
(option)
To audio output (L)
To audio output (R)
To video output
To S-video output
BRG
Audio cable (option)
To audio output DVD player or HDTV decorder
BNC - RCA connector (option)
No connection
Mini D-SUB 15-pin - BNC conversion cable (option)
COMPUTER IN
Basic connections 
						

							Basic connections (continued)
EN-15
Connection (for video equipment having an HDMI terminal)
Important: 
 Use a commercially available HDMI (with HDMI logo) cable.
 You don’t have to connect any cable for audio input. You can input video and audio using an HDMI cable only.
 When HDMI audio isn’t output, it may be output by turning off the power of the video equipment with the projector
and the video equipment connected to each other and then turning back on the power.
 Some cables may not be connected correctly depending on the size and shape of their connectors.
 To connect the projector and video equipment via a distributor, use a Deep Color supported distributor compliant
with HDMI1.3 or higher (or a 3D display supported distributor compliant with HDMI1.4 or higher when displaying
3D images.)
When you connect this projector and a Digital device (such as a DVD player) via the HDMI terminal, black color 
may appear dark and deep, depending on the type of the connected device.
 This depends on the black level setting of the connected device. There are two kinds of methods to digitally
transfer image data, in which different black level settings are employed respectively. Therefore, the specifications
of the signals output from DVD players differ, depending on the type of the digital data transfer method they use.
 Some DVD players are provided with a function to switch the methods to output digital signals. When your DVD
player is provided with such function, set it as follows.
EXPAND or ENHANCED J NORMAL
 See the users guide of your DVD player for details.
 When your digital device does not have such function, set INPUT LEVEL to ENHANCED in the ADVANCED MENU
of the IMAGE menu of this projector, or adjust the black color by viewing the image.
Equipment having an 
HDMI terminal
to HDMI IN 1 terminal  
or HDMI IN 2 terminal
HDMI (with HDMI logo) cable (option) 
						

							EN-16
Basic connections (continued)
Projector + Computer
For computer with Mini D-SUB
For analog connection:
1. Connect one end of the supplied computer cable to the COMPUTER/COMPONENT VIDEO IN terminal (1, 2) of the 
projector.
2. Connect the other end of the computer cable to the monitor port of the computer.
For monitor connection:
Connect the computer cable from the monitor to the MONITOR OUT terminal of the projector.
 Images may not be displayed correctly depending on the type of the input signal. See the instruction manual of the
monitor.
 Signals are coming from the COMPUTER/COMPONENT VIDEO IN-1 terminal of the projector.
 When the STANDBY MODE in the INSTALLATION menu is set to STANDARD the MONITOR OUT terminal outputs
signals during standby mode.  
Important:
 When you use a longer computer cable instead of the provided cable, the image may not be projected correctly.
 Some computers require additional connectors or analog RGB output adapters to be connected with this projector.
Contact your dealer for further information.
 This projector uses stereo mini jack for its audio input. Check the type of the audio output terminal of the
connected computer and prepare a proper cable for connection. Some computers don’t have the audio output
terminal.
 Speaker output is mono.
 When the audio cable is connected to the AUDIO OUT terminal, the speaker output is muted.
 The audio output can be available during power standby.
For Mac computers
 If your Mac computer has no video port, a monitor output adapter is required. Contact your dealer for further
information.
 Some Mac computers require a MAC adapter for the computer cable for connection with this projector. Contact
your dealer for further information.
About DDC
The COMPUTER/COMPONENT VIDEO IN terminals (1,2) of this projector comply with the DDC 1/2B standard. When 
a computer supporting this standard is connected to this terminal, the computer will automatically load the information 
from this projector and prepare for output of appropriate images.
 After connecting a computer supporting this standard to this terminal, plug the power cord of the projector in the
wall outlet first, and then boot up the computer.
Computer cable
COMPUTER IN
AUDIO INAUDIO OUT
Audio cable (option)Computer cable 
(option) Necessary when outputting to both a 
PC monitor and the projector.
MONITOR OUTTo monitor port 
						

							EN-17
Preparation for projection
1. Attach the provided power cord to the projector.
2. Plug the power cord in the wall outlet.
Warning:
 Do not look into the lens directly when the projector
is on.
 One of power cords for the U.S., Europe, U.K., 
Australia, and South Korea is provided appropriately.
 This projector uses the power plug of three-pin
grounding type. Do not remove the grounding pin
from the power plug. If the power plug doesn’t fit
your wall outlet, ask an electrician to change the wall
outlet.
 In case that the power cord for the U.S. is provided
with this projector, never connect this cord to any
outlet or power supply using other voltages or
frequencies than rated. If you want to use a power
supply using other voltage than rated, prepare an
appropriate power cord separately.
 Use 100-240 V AC 50/60 Hz to prevent fire or
electric shock.
 Do not place any objects on the power cord or do
not place the projector near heat sources to prevent
damage to the power cord. If the power cord should
be damaged, contact your dealer for replacement
because it may cause fire or electric shock.
 Do not modify or alter the power cord. If the power
cord is modified or altered, it may cause fire or
electric shock.
Caution:
 Plug in the power cord firmly. When unplugging,
hold and pull the power plug, not the power cord.
 Do not plug in or out the power cord with your hand
wet. It may cause electric shock.
Important:
 When STANDBY MODE in the INSTALLATION menu
is set to STANDARD, the fans rotate at very low
speed during standby after plugging the power cord
(with 5 second high speed rotation at the beginning)
and after turning off the lamp. This is to cool down
the projector operating various functions during
standby and is not a malfunction. (When STANDBY
MODE is set to LOW or LAN, the fans stop during
standby.)
Adjustment of the projection angle
For the best projection, project images on a flat screen 
installed at 90 degrees to the floor. If necessary, tilt the 
projector using the two adjustment feet on the bottom 
of the projector.
Using the adjustment feet (front)
1. Tilt up the projector to the appropriate angle.
2. Rotate the adjustment feet (front) for fine 
adjustment.Important:
 Install the screen on a flat wall at 90 degrees to the
floor.
 Slanting the projector more than ±10° (right and left)
or ±15° (front and rear) may cause trouble or
explosion of the lamp. You can tilt the projector up to
7 degrees using the adjustment feet only.
 Images may not be projected in a shape of a regular
rectangle or with its aspect ratio 4:3, depending on
the installation conditions of the projector and the
screen.
When projected images are distorted 
to a trapezoid
When AUTO KEYSTONE in the INSTALLATION menu is 
set to ON, this projector automatically corrects vertical 
keystone distortion. For fine adjustment, press the 
KEYSTONE button on the projector or the remote 
control to display KEYSTONE, and adjust the image by 
pressing the S,T button (or +, - button on the remote 
control).
KEYSTONE menu
You can correct the distortion vertically focusing on the 
screen center.
In the following cases: 
 Press the S 
or + button.
Press the T 
or - button.
Preparation 
						

							EN-18
Preparation (continued)
Important:
 The automatic keystone adjustment may not be
carried out correctly because of the ambient
temperature and the installation conditions of the
projector and the screen. In such cases, correct the
keystone manually.
 When the projector is projecting images where
acceleration is present, such as in a vehicle and
aircraft, the automatic keystone adjustment may not
function correctly. In such a case, set AUTO
KEYSTONE in the INSTALLATION menu to OFF and
correct the keystone manually.
 When the KEYSTONE-mode adjustment is carried
out, the adjustment value is indicated. Note that this
value doesn’t mean a projection angle. 
 When the KEYSTONE-mode adjustment takes
effect, the resolution decreases. In addition, stripes
may appear or straight lines may bend in images
with complicated patterns. They are not due to
product malfunctions. 
 When the KEYSTONE-mode adjustment is
performed, the displayed image may be distorted.
 Noise may appear on the screen during the
KEYSTONE-mode adjustment because of the type
of the video signal being projected and the setting
values of the KEYSTONE-mode adjustment. In such
cases, set the KEYSTONE-mode adjustment values
in the range where the image is displayed without
noise. 
 When the KEYSTONE-mode adjustment is
performed, the menu display is distorted. To relieve
such symptom, set the MENU POSITION to center.
 When you use DIGITAL ZOOM and KEYSTONE in
combination, the adjustable range becomes
narrower than that when these functions are used
individually. 
						

							
EN-19
Power-on
1. Turn on the device connected to the projector first.
2. Plug the power cord in the wall outlet. The POWER indicator lights up.
 If the power cord is unplugged from the wall outletbefore the projector is cooled down completely
after use, the fans may start rotating when the
power cord is plugged in next time and the
POWER button may not function. In this case,
wait for the fans to stop and press the POWER
button to light the indicator.
3. Press the POWER button on the control panel or the ON button on the remote control.
 It may take about one minute for the lamp to lightup.
 The lamp occasionally fails  to light up. Wait a few
minutes and try to light the lamp again.
 After the POWER button is pressed, the image may flicker before the la mp becomes stable. This
is not a product malfunction.
 Regardless of the setting of LAMP MODE in the INSTALLATION menu, th e STANDARD lamp mode
is activated by default whenever the projector is
turned on. The LAMP MODE is set to either
STANDARD or LOW depending on the setting last
selected, and you cannot switch the LAMP MODE
in about one minute after the lamp is on. 
 Furthermore, you cannot switch LAMP MODE LOW1 to LOW2 in about three minutes after the
lamp is on. 
Important:
 If the lamp exceptionally turned off due to the power interruption or voltage drop, it can happen that the
lamp does not turn on even if you switch again the
power supply on. In that case, please pull the
electric cord out of the consent and put it again in
the consent about 10 minutes later.  Do not cover the lens while the lamp is on.
 The projector starts warming up when the POWER
button is pressed. During the warm-up process,
images may appear dark and no commands are
accepted.
 By blinking red, the STATUS indicator indicates that the lamp should be replaced soon. Replace the lamp
when the STATUS indicator blinks red. (See page
76.)
 Images may not be projected with good quality in an extremely hot or cold environment. (This is not a
product malfunction.)
 In order to ensure the safety in case of trouble with the projector, use an electrical outlet having an earth
leakage breaker to supply the power to the projector.
If you do not have such outlet, ask your dealer to
install it.
4. Adjust the focus by turning the focus ring.  You are recommended to adjust the focus at thescreen center.
5. Select an input source.
 Press the SOURCE button.
 When the SOURCE button ispressed, the SOURCE dialog
shown right appears. Press
the  S or  T button to select
an input and press the
ENTER button.
 The projector automatically selects the appropriate
signal format. The selected
signal format is displayed on
the screen.
 You cannot change the input source while the menu is being displayed.
 Though it may take some  time before an image is
displayed on the screen depending on the type of
the input signal, such symptom is not a
malfunction.
 Images may not be projected in the correct position, depending on the type of the input
signal. In such a case, press the AUTO POSITION
button. (The AUTO POSI TION only works when
the input is COMPUTER (1  or 2).) (See page 21.).
 When COMPUTER 1 or COMPUTER 2 is chosen as the source, images supplied from the
computer may flicker. Press the  W or  X button on
Indicator
STATUS POWER
Condition
Stand-by - Red
When the lamp is on. Green Green
3,  1, 2
5TIMER
EFFICIENT
MODE
AUTOPOSITIONSEARCH
ENTER
3D
ASPECT
SOURCE
ON STANDBY
MENU
COLOR.E
KEYSTONE MAGNIFY AV MUTE
FREEZE INFO.
VOL
1, 23
5
4. Focus
6. Zoom
Basic operation 
						

							EN-20
Basic operation (continued)
the remote control to reduce flicker, if it occurs.
(Fine adjustment).
 To avoid permanently imprinting a fixed image
onto your projector, please do not display the
same stationary images for long period.
6. Adjust the image size by turning the zoom ring.
 If necessary, adjust the focus and zoom again.
When fine streaks are seen on projected 
images
This is due to interference with the screen surface and 
is not a malfunction. Replace the screen or displace the 
focus a little.
Detect input signal and switch the 
projected image automatically (SEARCH)
You can also switch the projected image by pressing 
the SEARCH button on the remote control. The 
projector starts to search for signals which are being 
input to each input source automatically.
 When two or more input signals are input, repeat
pressing the SEARCH button until the target image
is projected.
 If input signal can not be detected, the projector
returns to the input source when pressed the
SEARCH button.
Important:
 When you connect the equipments such as
computer, DVD player, or Blu-ray player, turn on their
equipments before this operation
 Input signals may not be detected depending on the
type of equipments. It also may not be detected
when unsupported signals are input, or when
computer is starting-up.
Power-off
Use the following procedure to turn off the projector.
The lamp may deteriorate if the projector is powered off 
and on repeatedly within 30 minutes after the lamp is 
lighted.
1. Press the POWER button on the control panel or the
STANDBY button on the remote control.
 The message “POWER OFF? YES: PRESS
AGAIN” appears on the screen.
 To cancel, press any button except the POWER
button.
(Some buttons on the remote control don’t 
function for cancel.)
2. Press the POWER button on the control panel or the
STANDBY button on the remote control within 10
seconds again.
 The lamp will go out and the STATUS indicator will
start blinking.
3. Wait about 90 seconds for the STATUS indicator to
be turned off.
4. Unplug the power cord. The POWER indicator will go out.
 If the power cord should be unplugged
accidentally while either the STATUS indicator is
blinking or the lamp is on, allow the projector to
cool down for 10 minutes with the power off. To
light the lamp again, press the POWER button (or
ON button). If the lamp doesn’t light up
immediately, repeat pressing the POWER button
(or ON button) two or three times. If it should still
fail to light up, replace the lamp.
Caution:
 The lamp can’t be lit again for one minute after
turned off for safety purpose. It will take another one
minute for the STATUS indicator to go out. If you
want to turn on the projector again, wait until the
indicator goes out, and then press the POWER
button.
 The air outlet fans rotate faster as the temperature
around the projector rises.
 When the temperature around the projector rises
high, the sign “TEMPERATURE!!” blinks red on the
screen. If the temperature stays high, the lamp will
go out automatically.
Important:
 When storing the projector in the carrying case, the
lens should face up.
Before carrying the projector, rotate the focus ring 
and zoom ring to adjust the lens to the shortest. This 
prevents the possible damages of the lens.
Direct Power OFF
You can turn off this projector just by unplugging the 
power cord without pressing the POWER button.
 Don’t shut down the projector while the STATUS
indicator is blinking after the lamp lights up because
the lamp’s life may be shortened.
 Don’t turn the projector back on right after shutting it
down because the lamp’s life may be shortened.
(Wait about 10 minutes before turning the projector
back on.)
 Before shutting down the projector, be sure to close
the menu screen. If you shut down the projector
without closing the menu, the setting data of the
menu may not be saved.
 If you shut down the projector while controlling the
projector using the network function, the application
software such as ProjectorView may fail. For details,
see “User Manual of LAN Control Utility” contained
in the CD-ROM.