Mitsubishi Ex321u St Projector User Manual

EX321U-ST/EW331U-ST
ENGLISH
DLP™ PROJECTOR
MODEL
EX321U-ST/EW331U-ST
User Manual
This User Manual is important to you.
Please read it before using your projector. 

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The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsu-
lated dangerous voltage within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric 
shock. 
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and 
maintenance (servicing) instructions in the literature accompanying the appliance. 
WA R N I N G  Use the attached...

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ENGLISH
WA R N I N G
• The lens cap is for protecting the lens. If you leave the lens cap on 
the lens with the projector turned on, it may be deformed because of 
heat build-up. Remove the lens cap when you turn on the projector. 
• One of power cords for the U.S., Europe/Indonesia, U.K., Australia, 
South Korea and Argentina 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...

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Contents
Important safeguards ............................................................................................................................. 5
Projector exterior view .......................................................................................................................... 7
Controls and functions ........................................................................................................................... 8
Positioning your projector...

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ENGLISH
Important safeguards
Please read all these instructions regarding your projector and retain 
them for future reference. Follow all warnings and instructions marked 
on the projector. 
1. Read instructions 
All the safety and operating instructions should be read before 
the appliance is operated. 
2. Retain instructions 
The safety and operating instructions should be retained for 
future reference. 
3. Warnings 
All warnings on the appliance and in the operating instructions 
should be...

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WA R N I N G :  
Unplug immediately if there is something wrong with 
your projector.
Do not operate if smoke, strange noise or odor comes out of your pro-
jector. It may cause fire or electric shock. In this case, unplug immedi-
ately and contact your dealer. 
Never remove the cabinet. This projector contains high voltage circuitry. An inadvertent contact 
may result in an electric shock. Except as specifically explained in User 
Manual, do not attempt to service this product by yourself. Please...

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ENGLISH
Projector exterior view
1. External control panel 
(See Projector on page 8 for details.)
2. Lamp cover
3. Vent (heated air exhaust)
4. Quick-release button
5. Lens cover
6. Focus ring
7. Front IR remote sensor
8. Projection lens
9. Vent (air intake)
Do not replace the lamp immediately after using the projector 
because the lamp would be extremely hot and it may cause 
burns.
10. RGB signal output socket
11. RGB (PC)/Component Video (YPbPr/ YCbCr) signal 
input socket x 2
12. HDMI input...

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Controls and functions
Projector
1. Focus ring
Adjusts the focus of the projected image. See Fine-
tuning the image size and clarity on page 25 for details.
2. POWER indicator light
Lights up or flashes when the projector is under 
operation. See Indicators on page 53 for details.
3. SOURCE
Displays the source selection bar. See Switching input 
signal on page 24 for details.
4. Left/BLANK
Used to hide the screen picture. See Hiding the image 
on page 32 for details.
5. MODE/ENTER
Selects an...

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ENGLISH
Remote control
1. POWER (ON/STANDBY)
Toggles the projector between standby mode and on. See 
Starting up the projector on page 21andShutting 
down the projector on page 33for details.
2. FREEZE
Freezes the projected image. See Freezing the image 
on page 32 for details.
3. Left
Selects the desired menu items and makes adjustments. 
See Using the menus on page 22 for details.
4. BLANK
Used to hide the screen picture. See Hiding the image 
on page 32 for details.
5. VOLUME keys (+, -)
Adjusts...

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Using the remote control for the first time
Pull the tab before using the remote control.
Remote control effective range
Infra-Red (IR) remote control sensor is located on the front of the projector. The 
remote control must be held at an angle within 30 degrees perpendicular to the 
projectors IR remote control sensor to function correctly. The distance between 
the remote control and the sensor should not exceed 8 meters (~ 26 feet).
Make sure that there are no obstacles between the remote...