Mitsubishi Hl2750u Projector User Manual

							EN-31
How to adjust the image supplied from the computer using the menu:
Carry out the following procedures according to the symptoms. 
Wide strips appear.  ……………………………………… Adjust TRACKING in the SIGNAL menu. 
The projected image fl ickers. 
The projected image is blurred. ......................................Adjust FINE SYNC. in the SIGNAL menu. 
The projected image is displaced horizontally. ..............Adjust HORIZ.POSITION in the SIGNAL menu. Every time the 
W button is pressed, the image moves to the right. Every time 
the 
X button is pressed, the image moves to the left. 
The projected image is displaced vertically....................Adjust VERT.POSITION in the SIGNAL menu. Every time the 
W 
button is pressed, the image moves down. Every time the 
X 
button is pressed, the image moves up. 
The top part of the image fl ags. .....................................Change the setting of HOLD in the SIGNAL menu. Select ON , 
press the ENTER button, and adjust BEGIN or END to minimize 
the fl agging.
A solid black or solid white appears in the image.  ........ Adjust CLAMP POSITION or CLAMP WIDTH in the SIGNAL - 
USER menu.
The motion doesn’t run smoothly. ..................................Adjust VERT. SYNC in the SIGNAL - USER menu. Select 
AUTO for normal use. 
Noise appears on the right or left half of the image.
 ......Adjust SHUTTER(LS) or SHUTTER(RS) in the SIGNAL - USER 
menu.
Noise appears on the top or bottom part of the image.
 .......Adjust SHUTTER(U) or SHUTTER(L) in the SIGNAL - USER 
menu.
1.  Display the SIGNALmenu. 
2. Press the 
S or 
T button to select an item to adjust. 
3.  Adjust the selected item by pressing the 
W or 
X button. 
To cancel the menu:
4.  Press the MENU button. 
•  Do not change the settings of the SIGNAL menu in normal use. 
Simple method to adjust the image position
To adjust the horizontal position: 
1.  Align the left edge of the image with the left side of the screen by adjusting HORIZ.POSITION. Then, align the 
right edge of the image with the right side of the screen by adjusting TRACKING. 
2.  Repeat step 1 above to complete the adjustment of the horizontal position. 
To adjust the vertical position: 
3.  Align the upper edge of the image with the upper side of the screen by adjusting VERT.POSITION. 
LPF (Progressive fi lter) 
You can select whether or not to enable the LPF. 
Vertical or horizontal streak noise may appear on the projected image, depending on the type of the DVD player or 
game console you use. In such a case, you can reduce such streak noise by enabling the LPF. However, projected 
images become softened slightly. 
Adjusting projected images  (continued) 
						

							EN-32
CAPTURE : ENTER + ENTER
CANCEL : MENUCAPTURE : ENTER X2
CANCEL : MENU
CAPTURE : ENTER X2
CANCEL : MENU
LVP-XD300 LVP-XD300CAPTURING IMAGE !
x1 x4 FULL 
Setting of the image displayed during 
startup or muting
You can display your desired image as the startup 
screen (or splash screen). Using the menu, you can 
also use such image as a background that is displayed 
while the video is muted or no signal is supplied.
Important:
• You can’t set IMAGE CAPTURE when PASSWORD 
FUNCTION in the FEATURE menu has been set to 
SPLASH ID SCREEN to enable the password lock.
• You can’t set IMAGE CAPTURE when the compo-
nent video signal is inputted.
Setting procedure 
1.  Press the COMPUTER button to select the image 
supplied to the COMPUTER/COMPONENT VIDEO 
IN terminal.
2.  Display your desired image.
3.  Display the INSTALLATION menu.
4.  Select IMAGE CAPTURE by pressing the 
S or 
T 
button.
5.  Press the ENTER button.
• The setting menu will be displayed.
Advanced features
opt.
INSTALLATION
CUSTOM IMAGE CAPTURE
BACK COLOR
SIZEGRAY
x1
CAPTURE
GO
12.Adjust the size of the image to be captured so that 
such image stays within the red frame. 
• Press the 
S, 
T, W or X button to move the red 
frame.
• You can’t move the red frame outside the 
screen. 
13. Press the ENTER button twice.
• Image capture will start.
• Press the MENU button to cancel the procedure.
• When the image capture completes, the cap-
tured image will be displayed for three seconds. 
Important:
• You can’t change the new startup screen back to 
the original startup screen. (Even when you select 
RESET ALL in the FEATURE menu, the factory 
default screen isn’t available any longer.) When you 
want to change the startup screen again, capture 
another image.
• The captured image will be displayed from the next 
startup. If the captured image isn’t displayed, make 
sure that the setting of SPLASH SCREEN in the 
INSTALLATION menu isn’t OFF. (See page 24.)
• To display the captured image while the video is 
muted, set MUTE MODE in the INSTALLATION 
menu to IMAGE. (See page 24.)
• When BACK COLOR in the INSTALLATION menu is 
set to IMAGE, the captured image will be displayed 
while no signal is supplied. 
• Some images can’t be captured correctly because 
of their signal type. 
Set the background color
(Set the background color only when you set the im-
age size to x1 or x4.)
6.  Select BACK COLOR by pressing the 
S or 
T but-
ton.
7.  Select your desired color for the background (GRAY, 
RED, GREEN, BLUE, BLACK, WHITE, RED50%, 
GREEN50%, or BLUE50%) by pressing the 
W or X 
button. 
Set the image size
8.  Select SIZE by pressing the 
S or 
T button.
9.  Select x1, x4, or FULL by pressing the 
W or X but-
ton. 
Capture the image
10. 
 Select CAPTURE by pressing the 
S or 
T button.
11.Press the ENTER button.
• A red frame appears. (The size of the red frame 
is 320x240 pixels.) 
						

							EN-33
MENU ACCESSFEATURE
opt.
LOCK
UNLOCKOK
OK
PASSWORD
CONFIRM
1
32 4
O K : ENTER CANCEL : MENU
MENU ACCESSFEATURE
opt.
LOCK
UNLOCKOK
OK
PASSWORD
1
32 4
O K : ENTER CANCEL : MENU
Password function
This projector is equipped with the password function 
that is designed for prevention of wrong operation by 
children and restriction on operation by other than 
specifi ed users. 
DISPLAY INPUT ...........When the projector is turned 
on, the startup screen (or splash screen) will ap-
pear and stay on the screen until the password is 
entered. When the password is entered, the startup 
screen will switch to the regular operation screen.
MENU ACCESS ........... All the buttons except for the 
POWER button on the projector are disabled. (The 
buttons on the remote control are enabled.) You 
can use this mode as a measure of prevention 
of wrong operation by children and restriction on 
operation by other than specifi ed users.
SPLASH ID SCREEN ... IMAGE CAPTURE and SPLASH 
SCREEN in the menu become unavailable. SPLASH 
SCREEN will be set to ON automatically.
To enable the password function:
1.  Display the FEATURE menu.
2. Press the 
S or 
T button to select PASSWORD 
FUNCTION.
3. Press the W or X button to change the mode 
among DISPLAY INPUT 
, MENU ACCESS  and 
SPLASH ID SCREEN 
.
•  When the password has already been set, the 
mode won’t be changed. In such cases, press 
the ENTER button to cancel the password func-
tion and try again. 
4.  Press the ENTER button.
•  The screen for setting the password function will 
appear. 
5.  Press the ENTER button.
•  The screen for entering a password will appear. 
6.  Enter a 4 - 8 digit password using the 
S, X, 
T or 
W
 button on the remote control as shown below.
 (
S=1, X=2, T=3, W=4) 
7.  Press the ENTER button.
•  To cancel the procedure, press the MENU 
button. 
8.  Enter the password again for confi rmation using the 
same steps.
Advanced features  (continued)
9.  Press the ENTER button. 
•  If the entered passwords don’t match, an error 
message will appear. 
•  To cancel the procedure, press the MENU 
button. 
To cancel the password function: 
1.  Display the FEATURE menu.
2. Press the 
S or 
T button to select PASSWORD 
FUNCTION.
3.  Press the ENTER button.
•  The screen for canceling the password function 
will appear.
4.  Press the ENTER button.
•  The screen for entering the password will 
appear. 
5.  Enter a 4 - 8 digit password using the 
S, X, 
T or 
W
 button on the remote control as shown below.
 (
S=1, X=2, T=3, W=4) 
6.  Press the ENTER button.
•  If you enter a wrong password, an error message 
will appear.
•  To cancel the procedure, press the MENU 
button. 
Important:
•  Disable the password by pressing the MENU and 
ENTER buttons on the control panel at the same 
time about three seconds. 
						

							EN-34
Expand
By pressing the EXPAND button on the remote control, 
you can magnify the image to view the details.
•  The EXPAND mode doesn’t function with some 
input signals. For details, see page 45.
•  The EXPAND mode doesn’t work with video or 
S-video signal. •  When the COMPUTER 1, COMPUTER 2 or DVI-D 
(HDCP) button on the remote control or the 
COMPUTER button on the control panel is pressed, 
the PinP mode will be canceled. 
•  The PinP mode is available only when the ASPECT 
ratio is set to AUTO. 
Still
To stop the motion in the image temporarily (or to dis-
play a still image):
Press the STILL button on the remote control.
•  The image will freeze temporarily.
To resume the motion in the image:
Press the STILL button on the remote control again.
Important:
•  Do not display a still picture for a long time because 
the afterimages may persist on the screen. (See 
page 42.) To use the EXPAND mode:
1.  Press the EXPAND button. 
•  You can select the area to be magnifi ed by 
pressing the S, T, W, or X button on the remote 
control.
•  You can change the magnifi cation of the selected 
area by pressing the + or - button.
2.  Press the EXPAND button again to exit the EXPAND 
mode.
•  The regular operation screen will appear.
Important:
•  In the EXPAND mode, you can’t adjust the volume.
Picture in Picture (PinP) 
One of the special features of this projector is the 
picture-in-picture (PinP) mode. The PinP mode allows 
you to view the images from different sources at the 
same time. 
To use the PinP mode
1.  Press the PinP button on the remote control. 
•  When you press the PinP button with the image 
from the COMPUTER/COMPONENT VIDEO 
IN-1/IN-2 or COMPUTER/COMPONENT VIDEO 
DVI-D (HDCP) terminal displayed on the screen, 
the image from the VIDEO IN or S-VIDEO IN 
terminal is displayed as the sub image. 
•  When the image from the VIDEO IN or S-VIDEO 
IN terminal is displayed, the PinP mode isn’t 
activated. 
•  When the component video signal is inputted, 
the PinP mode isn’t activated. 
2.  If necessary, select the desired external input 
source of the sub image by using the VIDEO or 
S-VIDEO button on the remote control or the VIDEO 
button on the control panel.
3.  Press the PinP button on the remote control. 
•  The PinP mode will be canceled.
To change the position of the sub image:
Press the W or X button on the remote control.
•  When there is no video signal for sub image, you 
can’t change the display position.
Important:
•  The motion may not run smoothly in the PinP mode.
•  The PinP mode isn’t available with some input 
signals. For further information, see page 45. 
EXPAND
Magnifi ed image
Advanced features  (continued) 
						

							EN-35
Mouse remote control
By connecting to personal computer through the USB port, you can operate your computer with the projector remote 
control. 
Projector + computer with USB connector
Operation
•  You can use the mouse remote control function with a computer supporting USB only. 
•  When the lamp is turned ON, the computer connected with the USB cable may not work correctly. In this case, 
restart the computer.
•  The mouse doesn’t function for a while after the power is turned on. 
•  When a computer is connected using a long USB cable, it may not be controlled by the remote control correctly. 
To extend the cable length, you are recommended to use a repeater.
COMPUTER
VIDEO S-VIDEO
DVI-D(HDCP)
HOME PageUP
END PageDOWNAUTO POSITION
KEYSTONE
12
MENUENTER
LASER
R-CLICK
USB 
Mouse pointer
Use to move the cursor on 
the image, instead of the 
computer mouse.
R-CLICK button
This operates in the same 
way as the right button on 
the computer mouse.L-CLICK button
This operates in the 
same way as the left 
button on the computer 
mouse.  USB cable
USB 4-pin
(type B)USB 4-pin
(type A)
To USB port
HOME button
Press to jump back 
to the fi rst page.
END button
Press to jump to the 
last page.PageUp button
Press to go back to 
the previous page.
PageDown button
Press to go to the 
next page.
Advanced features  (continued) 
						

							EN-36
Supervising and controlling by computer
You can supervise and control the projector’s operation using a personal computer via a LAN network. 
•  To supervise and control the projector, install the software “Projector-Control Device Installer *” contained in the 
attached CD-ROM. For the installation procedure and usage of the software, see “User Manual for LAN Control 
Utility” contained in the attached CD-ROM. 
 *) Functions
•  Setting of the projector’s IP address
•  Setting of password, display language, and LAN control
• PJLink™ certifi cation setting (telnet function)
•  Startup of the controlling /supervising tool (ProjectorView) using the Web browser
Major functions
ProjectorView
The controlling /supervising tool using the Web browser 
PJLink™
This projector supports standard protocol 
PJLink™ for projector control and you can control and monitor projector’s 
operations using the same application among projectors of different models and different manufacturers. 
About PJLink™
•  To use PJLink™ function, the PJLink™ application software is required. 
•  For the specifi cations of 
PJLink™, access to the Web site of Japan Business Machine and Information System 
Industries Association (JBMIA)
. (http://pjlink.jbmia.or.jp/english)
•  This projector is fully compliant to the specifi cations of JBMIA 
PJLink™ Class 1. It supports all the commands 
defi ned by 
PJLink™ Class 1, and the compliance has been verifi ed with the PJLink™ standard specifi cations 
Version 1.0.
Connection
Computer
To LAN terminal
LAN cable (option)
(100BASE-TX or 10BASE-T should be supported.)LAN cable (option)
(100BASE-TX or 10BASE-T should be 
supported.)
External HUB
•  Use a straight-through category-5 cable for LAN connection.
•  Don’t touch the metal parts of the LAN connector and LAN cable because static electricity may be discharged from 
your body, causing damage to the projector.
Using the User Manual
The User Manual for LAN Control Utility is prepared in the Portable Document Format (PDF) in the CD-ROM. 
Opening the User Manuals
1.  Load the CD-ROM into the CD-ROM drive.
2.  Open CD-ROM “HL2750.”
3.  Double-click on “MANUAL_LAN.HTML” within the CD-ROM. A language selection list for the User Manual will be 
displayed.
4.  Move the mouse pointer to the desired language and click. 
Advanced features  (continued) 
						

							EN-37
Indicators
POWER 
Steady  
g r een 
or 
Steady  r ed 
Steady  r ed 
Steady  
g r een 
Steady  r ed 
Steady  r ed 
Blinking  
g r een/ r ed 
Blinking  
g r een/ r ed 
S TA  TUS 
Blinking orange 
Blinking g r een 
Blinking g r een/ r ed 
Blinking  r ed 
Steady  r ed 
O f f 
Steady 
or 
Blinking 
CONDITION 
Abnormal temperatu r e 
• The ventilation grilles a r e clogged with dust or dirt. 
• The  r oom temperatu r e is high. 
The p r otection ci r cuit is working or the lamp is in an 
abnormal condition.   
The lamp cover isn ’ t closed.  
Abnormal. POSSIBLE SOLUTION 
•   Clean the ventilation grilles. 
•   Relocate the p r ojector to a cooler place. 
•   W ait until the S TA  TUS indicator goes out,  
then p r ess the POWER button. 
•   If the above solution is not e f fective,    
replace the lamp. 
Replace the lamp. 
Change with a new lamp if this p r oblem  
r ecurs. 
Close the cover cor r ectl y . 
Contact your deale r .  Lamp operation time warning. (Total lamp operation time 
reached 3750 hours
*1 while the power was on.) 
Lamp operation time warning. (Total lamp operation time 
reached 3750 hours
*1 while the power was off.) 
Lamp operation time warning. (Total lamp operation time 
reached 5000 hours
*1*2 while the power was off.) 
*1: Duration when LAMP MODE of the INSTALLATION menu is set to LOW. When it is set to STANDARD, this duration will be 
shorted.
*2: When LAMP MODE is set to STANDARD, this duration will be shorted up to 2000 hours.
This projector has 2 indicators, each of which shows the operation condition of the projector. 
The following offer solutions to possible problems. If these problems persist, turn the projector off and consult your 
dealer. 
Normal condition
Abnormal condition
POWER indicator
STATUS indicator 
POWER 
Steady  
red
Steady
green
S TA  TUS 
Off
Steady 
green
CONDITION 
Stand-by
Lamp stand-by for power-on (about 1 minute)
The power is on. (Normal condition)
NOTE 
The power cannot be turned off by pressing 
the POWER button.
For the first one minute, the power cannot be 
turned on by pressing the POWER button.
Steady
greenBlinking Lamp stand-by for power-off (about 2 minutes)
r
green 
						

							EN-38
Replacing the lamp
This projector is equipped with a lamp to project images. This lamp is a consumable. It may burn out or its brightness 
may decrease during use. In such cases, replace the lamp with a new one as soon as possible. Be sure to replace the 
lamp with a new lamp separately sold that is exclusive to this projector. Contact your dealer for purchase of the lamp. 
Spare lamp  VLT-XL650LP
Warning:
•  Be careful not to drop the lamp fi xing screws into the inside of the projector. Don’t put a metal piece or fl ammable 
object into the projector. Using the projector with any foreign object present inside may result in electric shock or 
fi re. When you can’t remove the foreign object from the inside, contact your dealer for removal. 
•  Be sure to install the lamp securely. When the lamp isn’t installed properly, it won’t illuminate. Improper installation 
may also result in fi re.
•  Don’t shake the removed lamp or don’t lift it above your face. You may be injured in your eye by fl ying or falling 
glass fragments.
•  Don’t replace the lamp immediately after use because the lamp cover is very hot. You may get burned. Turn off the 
power using the POWER button. After the lamp goes out, wait about 2 minutes until the intake and exhaust fans 
for cooling the lamp stop rotating. Then unplug the power cord, and wait at least 1 hour to allow the lamp to cool 
down enough to the touch.
•  Do not touch the lamp directly. It may break and cause injury or burn.
Interval of lamp replacement
The recommended interval of lamp replacement is about 5000 hours*1*2 of consecutive use. Such interval differs 
depending on the operating environment and may be shorter than 5000 hours*1*2. Decrease in luminescence and/or 
color brightness indicates that the lamp needs to be replaced. When the lamp operation time exceeds 3750 hours*1, 
the indicator will blink alternately between green and red (while the lamp is lit; when the lamp is not lit, the indicator 
will be lit red only) and the lamp replacement message will appear on the screen for 1 minute everytime the lamp 
is turned on. When the lamp has been used for about 4750 hours
*1, the replacement message (LAMP EXCHANGE) 
will appear on the screen for 1 minute every 25 hours*1 thereafter. When the lamp operation time exceeds 5000 
hours*1*2, the projector automatically shuts off and can’t be used until the lamp is replaced and the lamp 
operation time is reset.
*1: Duration when LAMP MODE of the INSTALLATION menu is set to LOW. When it is set to STANDARD, this duration will be 
shorted.
*2: When LAMP MODE is set to STANDARD, this duration will be shorted to 2000 hours.
Caution:
•  Don’t remove the lamp for any purpose other than replacement. Unnecessary removal of the lamp may result in a 
breakdown.
•  This projector uses a high-pressure mercury lamp as the light source. The high-pressure mercury lamp may 
explode or fail to illuminate permanently because of an impact, scratch, or deterioration through use. The period 
of time until explosion or permanent failure to illuminate varies considerably from lamp to lamp, depending on 
operation conditions. Therefore, the lamp may explode soon after the start of use. 
•  The possibility of explosion of the lamp increases if you use it beyond its replacement period. When the instruction 
of lamp replacement appears, replace it with a new one immediately even if the lamp is still lighting normally. 
•  When the high-pressure mercury lamp explodes, glass fragments will scatter inside or outside the lamp box and 
the gas charged inside the lamp will diffuse inside or outside the projector. The gas inside the lamp contains 
mercury. Be careful not to breathe it or avoid it from entering your eye or mouth. If you should breathe it or if it 
should enter your eye or mouth, see a doctor immediately.
•  In the event that the high-pressure mercury lamp exploded, glass fragments may have been scattered inside the 
projector. Ask your dealer to replace the lamp and to inspect the inside of the projector. When you clean or replace 
the lamp by yourself, be sure to hold the handle of the lamp. You may get injured by glass fragments. 
•  When removing the lamp from the ceiling-mounted projector, use the lamp replacement tray packed with the 
projector or option lamp to prevent glass fragments from scattering. 
•  Be sure to use the lamp exclusive to this projector, VLT-XL650LP. Use of other lamps may cause a failure of the 
projector. 
						

							EN-39
To replace the lamp: 
1.  Unplug the power cord.
2.  Loosen the screw (a) using a Phillips screwdriver (+), and 
remove the lamp cover (b).
3.  Loosen the screws (c) using a Phillips screwdriver (+).
4. Pull the handle. 
5.  Pull out the lamp box by the handle while holding the 
projector.
•  Pull the lamp box out of the projector slowly. If it is 
pulled out quickly, the lamp may break scattering glass 
fragments. 
•  Do not spill liquid on the removed lamp box or do not 
place it near any fl ammable object or where children 
can reach to prevent injury or fi re.
6.  Load a new lamp box securely into the projector in the right 
orientation.
7.  Put the handle back to the original position.
•  Make sure that the handle is locked.
8.  Tighten up the screws (c) using a Phillips screwdriver (+).
9.  Tighten up the screw (a) using a Phillips screwdriver (+) to 
secure the lamp cover.
Reset of the lamp operation time
Plug in the power cord and reset the lamp operation time by 
holding down the 
W, 
X, and POWER buttons on the control 
panel at the same time about three seconds.
Important:
•  Unless these 3 buttons are pressed at the same time, the lamp operation time isn’t reset. 
•  Make sure that the STATUS indicator is lit twice and the lamp operation time is reset successfully. 
•  The projector doesn’t turn on if the lamp cover isn’t attached securely. 
•  Be sure to reset the lamp operation time whenever you replace the lamp. 
•  Do not reset the lamp operation time unless you replace the lamp. 
When removing the lamp from the ceiling-mounted projector 
When removing the lamp from the ceiling-mounted projector, use the lamp replacement tray packed with the 
projector or option lamp to prevent glass fragments from scattering. 
•  Assemble the lamp replacement tray according to the procedure shown on it. 
(a)(b)
(c)
(c)
(a)
Important:
•  The lamp is fragile. If it is broken, be careful not to cut yourself with glass fragments.
Caution:
•  This projector uses a lamp that contains mercury. Disposal of the lamp or the projector 
with the lamp may be regulated due to environmental considerations. For disposal or 
recycling information, please contact your local authorities or the Electronic Industries 
Alliance: www.eiae.org. (For the U.S. only.)
1.  Follow steps 1 to 4 shown above. 
2.  Attach the lamp replacement tray to the projector as shown 
in the fi gure. 
3.  Secure the lamp replacement tray on the projector using 
the tape packed with the tray. 
4  Pull out the lamp box by the handle while holding the 
projector. 
•  Hold the lamp replacement tray to prevent glass 
fragments from scattering.
•  Don’t put the lamp directly on the lamp replacement 
tray because it may fall. 
5.  Detach the lamp replacement tray together with the 
removed lamp. 
Tape
Replacing the lamp (continued) 
						

							EN-40
Maintenance
Warning:
•  Never use fl ammable air duster or other materials when cleaning the air-fi lter. Flammable substances may ignite 
causing fi re or backdown when the lamp is illuminated.
•  Do not use fl ammable solvents (benzene, thinner, etc.) and fl ammable aerosols when cleaning the projector body 
and lens. Flammable substances may ignite causing fi re or breakdown while the lamp is illuminating.
Caution:
Be sure to turn off the lamp and unplug the power cord from the wall outlet before you perform any maintenance on 
the projector. 
Cleaning of the air-fi lter
Clean the air-fi lter frequently (about once a month). If the fi lter or ventilation grilles become clogged with dirt or dust, 
the temperature inside the projector may rise and cause troubles, such as damage to the inside parts and shortening 
the life of the panels.
•  When the temperature inside the projector rises, the STATUS indicator will blink orange and the lamp will be turned 
off. 
1.  Raise the lock of the fi lter cover in the direction of the arrow.
2.  Remove the air-fi lter.
3.  Wash the air-fi lter or change it with a new fi lter.
•  Use water or diluted mild detergent to clean the fi lter. Rinse the fi lter thoroughly 
and let it dry completely. 
4.  Attach the air-fi lter.
5.  Attach the fi lter cover to the projector.
•  Make sure that the air-fi lter is attached correctly without 
displacement.
Important:
•  If the fi lter is damaged or becomes extremely dirty, change it with a new fi lter. Contact your dealer for a new fi lter.
•  Use the dedicated fi lter only.
Caution:
Be sure to use the projector with an air-fi lter. If not, dust may get inside the projector causing fi re and failure.
Cleaning of the projector and the ventilation slots
Use a soft cloth to clean the projector and the ventilation grilles. When the grilles become dirty, wipe them with a soft 
cloth dampened with diluted mild detergent, and then wipe them with a dry cloth.
To protect the surface of the projector from fading or deteriorating:
•  Do not spray insecticide on or inside the projector.
•  Do not use benzine or thinner to clean it.
•  Do not let rubber or plastic materials contact with projector.
Cleaning of the lens
Use a standard lens-cleaning brush or a piece of lens tissue dampened with lens cleaning fl uid. The lens surface is 
fragile. Use only recommended, nonabrasive lens-cleaning materials. Do not touch the lens with your fi ngers.
Filter cover
Air-fi lter