BenQ Mw821st Digital Projector User Manual

							Introduction 11
Remote control
1. POWER
Toggles the projector between standby 
mode and on.
2. Info
Shows the status information of the 
projector.
3. MENU/EXIT
Turns on the On-Screen Display (OSD) 
menu. Goes back to previous OSD menu, 
exits and saves menu settings.
4. Left
5. MODE/ENTER
Selects an available picture setup mode.
Activates the selected On-Screen Display 
(OSD) menu item.
6. ECO BLANK
Used to hide the screen picture.
7. Keystone/Arrow keys ( / Up,  /
Down)
Manually corrects distorted images 
resulting from an angled projection.
8. SmartEco
Displays the lamp mode selection bar. 
(Normal/Economic/SmartEco)
9. Aspect
Selects the display aspect ratio.10. Page Up/Page Down
Operate your display software program (on 
a connected PC) which responds to page up/
down commands (like Microsoft 
PowerPoint).
11. Digital Zoom (+, -)
Magnifies or reduces the projected picture 
size.
12. Timer On
Activates or displays an on-screen timer 
based on your own timer setting.
13. Timer Set up
Enters presentation timer setting directly.
14. 3D settings
Enters 3D settings directly.
15. AUTO
Automatically determines the best picture 
timings for the displayed image.
16. Right
When the On-Screen Display (OSD) menu 
is activated, the #4, #7, and #16 keys are 
used as directional arrows to select the 
desired menu items and to make 
adjustments.
17. SOURCE
Displays the source selection bar.
18. Volume +/-
Adjusts the sound level.
19.Mute
Toggles projector audio between on and off.
20. Freeze
Freezes the projected image.
21. Test
Displays the test pattern.
22. CC
Displays the video term description on 
screen which is provided for hard-of-hearing 
viewers.
23. Teaching template
Enters Teaching template setting directly.
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							Introduction
12
Remote control effective range
The remote control must be held at an angle within 30 degrees perpendicular to the 
projectors IR remote control sensor(s) to function correctly. The distance between the 
remote control and the sensor(s) should not exceed 8 meters (~ 26 feet).
Make sure that there are no obstacles between the remote control and the IR sensor(s) on 
the projector that might obstruct the infra-red beam.
Replacing the remote control batteries
1. To open the battery cover, turn the remote control over to view its back, push on 
the finger grip on the cover and slide it up in the direction of the arrow as illustrated. 
The cover will slide off.
2. Remove any existing batteries (if necessar y) and install two AAA batteries observing 
the battery polarities as indicated in the  base of the battery compartment. Positive 
(+) goes to positive and negative (-) goes to negative.
3. Refit the cover by aligning it with the base  and sliding it back down into position. Stop 
when it clicks into place.
•  Avoid leaving the remote control and batteries in  an excessive heat or humid environment like the 
kitchen, bathroom, sauna, su nroom or in a closed car.
•  Replace only with the same or  equivalent type recommended by the battery manufacturer.
•  Dispose of the used batteries according to the  manufacturers instructions and local environment 
regulations for your region.
•  Never throw the batteries into a fire. There may be danger of an explosion.
•  If the batteries are dead or if you will not be usin g the remote control for an extended period of time, 
remove the batteries to avoid damage to the remote control from possible battery leakage.
•  Operating the projector from the front
A p
p
ro x
. 
+
1 5
º
•  Operating the projector from the top
A pp
ro
x.
 +
1
5º 
						

							Positioning your projector 13
Positioning your projector
Choosing a location
Your projector is designed to be installed in one of four possible installation locations: 
Your room layout or personal preference will dictate which installation location you select. 
Take into consideration the size and position of your screen, the location of a suitable 
power outlet, as well as the location and distance between the projector and the rest of 
your equipment.1. Front Table
Select this location with the projector 
placed on the table in front of the screen. 
This is the most common way to position 
the projector for quick setup and 
portability.
2. Front Ceiling
Select this location with the projector 
suspended upside-down from the ceiling in 
front of the screen.
Purchase the BenQ Projector Ceiling 
Mount Kit from your dealer to mount your 
projector on the ceiling.
Set Front Ceiling in the SYSTEM 
SETUP: Basic > Projector Installation 
menu after you turn the projector on.3. Rear Ceiling
Select this location with the projector 
suspended upside-down from the ceiling 
behind the screen.
Note that a special rear projection screen 
and the BenQ Projector Ceiling Mount Kit 
are required for this installation location.
Set Rear Ceiling in the SYSTEM 
SETUP: Basic > Projector Installation 
menu after you turn the projector on.
4. Rear Table
Select this location with the projector 
placed on the table behind the screen.
Note that a special rear projection screen 
is required.
Set Rear Table in the SYSTEM SETUP: 
Basic > Projector Installation menu 
after you turn the projector on. 
						

							Positioning your projector 14
Obtaining a preferred projected image size
The distance from the projector lens to the screen, the zoom setting, and the video format 
each factors in the projected image size.
Projection dimensions 
Refer to Dimensions on page 55 for the center of lens dimensions of this projector 
before calculating the appropriate position.
The screen aspect ratio is 16:10 and the projected picture is 16:10
For example, if you are using an 120-inch screen, the recommended projection distance is 
1263 mm and the vertical offset is 18 mm.
If your measured projection distance is 2.5 m (2500 mm), the closest match in the 
Distance from screen (mm) column is 2526 mm. Looking across this row shows that a 
240 (about 6.1 m) screen is required.
All measurements are approximate and may vary from the actual sizes. 
BenQ recommends that if you intend to permanently install the projector, you should physically test the 
projection size and distance using the actual projector in situ before you permanently install it, so as to make 
allowance for this projectors optical characteristics. This will help you determine the exact mounting position 
so that it best suits your installation location.
Screen size
Distance from screen (mm)Ve r t i c a l  
offset 
(mm)DiagonalW 
(mm)H 
(mm)
Inchmm
80 2032 1723 1077 842 54 
100 2540 2154 1346 1053 67 
120 3048 2585 1615 1263 81 
150 3810 3231 2019 1579 101 
180 4572 3877 2423 1895 121 
200 5080 4308 2692 2105 135 
220 5588 4739 2962 2316 148 
240 6096 5169 3231 2526 162 
270 6858 5816 3635 2842 182 
300 7620 6462 4039 3158 202 
Screen size
Projection distanceCenter of lens Screen
Vertical offset H
W 
						

							Connection 15
Connection
When connecting a signal source to the projector, be sure to:
1. Turn all equipment off before making any connections.
2. Use the correct signal cables for each source.
3. Ensure the cables are firmly inserted.
•  In the connections shown below, some cables may not be included with the projector (see Shipping 
contents on page 8). They are commercially available from electronics stores.
•  The connection illustrations below are for reference only. The rear connecting jacks available on the 
projector vary with each projector model.
•  Many notebooks do not turn on their external video ports when connected to a projector. Usually a key 
combo like FN + F3 or CRT/LCD key turns the external display on/off. Locate a function key labeled CRT/
LCD or a function key with a monitor symbol on the notebook. Press FN and the labeled function key 
simultaneously. Refer to your notebooks documentation to find your notebooks key combination.
•  The D-Sub output only works when an appropriate D-Sub input is made to the COMPUTER 1 jack.
1. VGA cable
2. VGA to DVI-A cable
3. USB cable
4. Component Video to VGA (D-Sub) 
adapter cable
5. S-Video cable6. Video cable
7. Audio cable
8. Audio L/R cable
9. HDMI cable
10. Microphone
87741213957106
Notebook or desktop computer
Speakers A/V device
Monitor
(DVI)
(VGA)
orMicrophone
or 
						

							Connection 16
•  If you wish to use this connection method when the projector is in standby mode, make sure the 
Monitor Out function is turned on in the SYSTEM SETUP: Advanced menu. See Standby Settings 
on page 44 for details.
Connecting video source devices
You need only connect the projector to a video source device using just one of the 
connecting methods, however each provides a different level of video quality. The method 
you choose will most likely depend upon the availability of matching terminals on both the 
projector and the video source device as described below:
Connecting audio
The projector has built-in mono speaker(s) which are designed to provide basic audio 
functionality accompanying data presentations for business purposes only. They are not 
designed for, nor intended for stereo audio reproduction use as might be expected in 
home theater or home cinema applications. Any stereo audio input (if provided), is mixed 
into a common mono audio output through the projector speaker(s).
The built-in speaker(s) will be muted when the AUDIO OUT jack is connected.
•  The projector is only capable of playing mixed mono audio, even if a stereo audio input is connected. See 
Connecting audio on page 16 for details.
•  If the selected video image is not displayed after the projector is turned on and the correct video source 
has been selected, check that the video source device is turned on and operating correctly. Also check 
that the signal cables have been connected correctly.
Playing sound through the projector
You can make use of the projector (mixed mono) speaker(s) in your presentations, and 
also connect separate amplified speakers to the AUDIO OUT socket of the projector.
If you have a separate sound system, you will most likely want to connect the audio output 
of your Video source device to that sound system, instead of to the mono audio projector.
You can also use a microphone to output the sound through the projector speaker(s).
Once connected, the audio can be controlled by the projector On-Screen Display (OSD) 
menus. See Audio Settings on page 43 for details.
Te r m i n a l  n a m eTerminal appearancePicture quality
HDMI
Best
Component Video
Better
S-Video
Good
Video
Normal 
						

							Connection 17 The table below describes the connection methods for different devices, and where the 
sound is from.
The projector can play sound if the connected RJ45 cable or USB cable carries audio signal. There is no need 
to connect the audio cable when the USB Display or Network Display source is selected.
About the microphone input
•  If you wish to use a microphone, connect a 3.5 mini jack cable microphone to the 
projector.
•  You can use a wireless microphone as long as a wireless module is attached to the 
projector’s microphone input jack and it works well with the associated devices. To 
ensure a quality use of the wireless microphone, it is recommended that your 
microphone conforms to the specifications listed in the table below. 
•  To adjust microphone volumes
• Directly set microphone volume levels in the SYSTEM SETUP: Advanced 
> Audio Settings > Microphone Volume menu. 
•  To make the microphone input available when the projector is in standby mode, turn 
on the SYSTEM SETUP: Advanced > Standby Settings > Microphone menu.
•  If the microphone is not working, check the volume setting and cable connection.
• You might get feedback noise from the microphone when you are too close to the 
speaker(s) of the projector. Move the microphone away from the speaker(s) of the 
projector. The greater volume you require, the greater distance you need to be away 
from the speaker(s) to prevent the noise.
DevicePC/Component Video Video/S-Video Microphone
Audio input portAUDIO IN 1/AUDIO IN 
2AUDIO (L/R)
MIC
The projector can play 
the sound from...AUDIO IN 1/AUDIO IN 
2/MICAUDIO (L/R)/MIC• MIC
• AUDIO IN 1/MIC
• AUDIO IN 2 (L/R)/
MIC
Audio output portAUDIO OUT AUDIO OUT AUDIO OUT
The selected input signal determines which sound will be played by the projector speaker(s), and which 
sound will be output from the projector when AUDIO OUT is connected. If you select the COMPUTER 
1/Y Pb Pr 1 signal, the projector can play the sound received from AUDIO IN 1/MIC. If you select the 
COMPUTER 2/Y Pb Pr 2 signal, the projector can play the sound received from AUDIO IN 2/MIC.
SignalParameterMinTy p eMax
MicrophoneTr a n s d u c e r  P r i n c i p l e D y n a m i c
Impedance 300 1K ohm
Frequency response 600 16k Hz 
						

							Operation
18
Operation
Starting up the projector
1. Plug the power cord into the projector and into a 
power outlet. Turn on the power outlet switch 
(where fitted). Check that the  POWER indicator 
light  on the projector lights orange after power 
has been applied.
Please use the original accessories (e.g. power cord) only with the 
device to avoid possible dangers such as electric shock and fire.
2. Press   POWER to start the projector. As soon as the lamp lights up, a  Pow e r  
On Tone  will be heard. The  POWER indicator light  flashes green and stays 
green when the projector is on.
The start up procedure takes about 30 seconds. In the later stage of start up, a 
startup logo is projected.
(If necessary) Rotate the focus ring  to adjust the image clearness.
To turn off the ring tone, see  Turning off the Power On/Off Ring Tone on page 33 
for details.
If the projector is still hot from previous activity, it  will run the cooling fan for approximately 90 seconds 
before energizing the lamp.
3. If the projector is activated for the first 
time, select your OSD language following 
the on-screen instructions.
4. If you are prompted for a password, press  the arrow keys to enter a six-digit 
password. See  Utilizing the password 
function on page 22  for details.
5. Switch all of the connected equipment on.
6. The projector will start to search for input  signals. The current input signal being 
scanned displays in the upper left corner of 
the screen. If the projector doesnt detect 
a valid signal, the message “No Signal” will 
continue displaying until an input signal is 
found.
You can also press  SOURCE on the 
projector or remote control to select your 
desired input signal. See  Switching input 
signal on page 24  for details.
•  If the frequency/resolution of the input signal exce eds the projectors operating range, you will see the 
message “Out of Range”  displayed on the background screen. Please  change to an input signal which is 
compatible with the projectors resolution or  set the input signal to a lower setting. See Timing chart on 
page 57  for details.
•  If no signal is detected for 3 minutes, the projector automatically enters ECO BLANK mode. 
						

							Operation 19
Adjusting the projected image
Adjusting the projection angle
The projector is equipped with 1 quick-release adjuster foot and 1 rear adjuster foot. 
These adjusters change the image height and projection angle. To adjust the projector:
1. Press the quick-release button and lift the 
front of the projector. Once the image is 
positioned where you want it, release the 
quick-release button to lock the foot in 
position.
2. Screw the rear adjuster foot to fine-tune the 
horizontal angle.
To retract the foot, hold up the projector while 
pressing the quick-release button, then slowly lower 
the projector. Screw the rear adjuster foot in a 
reverse direction.
If the projector is not placed on a flat surface or the 
screen and the projector are not perpendicular to 
each other, the projected image becomes 
trapezoidal. To correct this situation, see Switching 
input signal on page 24 for details.
Auto-adjusting the image
In some cases, you may need to optimize the picture quality. To do this, press AUTO on 
the projector or remote control. Within 3 seconds, the built-in Intelligent Auto 
Adjustment function will re-adjust the values of Frequency and Clock to provide the best 
picture quality. 
The current source information will be displayed in the corner of the screen for 3 seconds.
This function is only available when PC signal (analog RGB) is selected.
Fine-tuning the image clarity
Sharpen the image by rotating the focus ring. 
21
Do not look into the lens while the 
lamp is on. The strong light from the 
lamp may cause damage to your eyes.
Be careful when you press the quick-
release button as it is close to the 
exhaust vent where hot air comes 
from. 
						

							Operation 20
Correcting keystone
Keystoning refers to the situation where the projected image is noticeably wider at either 
the top or bottom. It occurs when the projector is not perpendicular to the screen. 
To correct this, you will need to manually correct it following ONE of these steps.
•  Using the remote control
Press  /  on the projector or remote 
control to display the Keystone correction page. 
Press   to correct keystoning at the top of the 
image. Press   to correct keystoning at the 
bottom of the image.
•  Using the OSD menu
1. Press MENU/EXIT and then press  /  until the DISPLAY menu is highlighted.
2. Press  to highlight Keystone and press MODE/ENTER. The Keystone 
correction page displays.
3. Press   to correct keystoning at the top of the image. Press   to correct 
keystoning at the bottom of the image.
Press/.Press /.