Bench Mx750/mp780st Digital Projector User Manual

							Operation 31 Yo u  c a n  a l s o  p r e s s  SOURCE on the projector or remote control to select your desired 
input signal. See Switching input signal on page 36 for details.
If the frequency/resolution of the input signal exceeds the projectors operating range, you will 
see the message Out of Range displayed on a 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 94 for details.
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 Correcting keystone on page 32 for details.
• 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 adjuster button as it is close to the exhaust vent where hot 
air comes from.
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 screen will be blank while AUTO is 
functioning.
• This function is only available when PC signal (analog RGB) is selected.
12
#- / ,/, 
						

							Operation 32
Fine-tuning the image size and clarity
1. Adjust the projected image to the size that 
you need using the zoom slide lever. (MX750 
only)
2. Then sharpen the image by using the focus 
ring/focus slide lever.
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, besides adjusting the height of the projector, 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 or press   to correct keystoning 
at the bottom of the image.
#- / ,#- / ,
Press/.Press /. 
						

							Operation 33
Using the menus
The projector is equipped with On-Screen Display (OSD) menus for making various 
adjustments and settings.
Below is the overview of the OSD menu.
The following example describes how to set the OSD language.
1. Press MENU/EXIT on the projector or 
remote control to turn the OSD menu on.3. Press  to highlight Language 
and press  /  to select a 
preferred language.
2. Use  /  to highlight the SYSTEM 
SETUP: Basic menu.4. Press MENU/EXIT twice* on 
the projector or remote control 
to leave and save the settings.
*The first press leads you back to 
the main menu and the second 
press closes the OSD menu.
Current input signal
Main menu icon
Main menu
Sub-menu
Highlight
Press 
MENU/EXIT 
to the 
previous 
page or to 
exit. Status 
						

							Operation 34
Securing the projector
Using a security cable lock
The projector has to be installed in a safe place to prevent theft. Otherwise, purchase a lock, 
such as the Kensington lock, to secure the projector. You can locate a Kensington lock slot on 
the rear side of the projector. See item 24 on page 10 for details.
A Kensington security cable lock is usually a combination of key(s) and the lock. Refer to the 
locks documentation for finding out how to use it.
Utilizing the password function
For security purposes and to help prevent unauthorized use, the projector includes an 
option for setting up password security. The password can be set through the On-Screen 
Display (OSD) menu.
WARNING: You will be inconvenienced if you activate the power-on lock functionality and 
subsequently forget the password. Print out this manual (if necessary) and write the password 
you used in this manual, and keep the manual in a safe place for later recall.
Setting a password
Once a password has been set, the projector cannot be used unless the correct password is 
entered every time the projector is started.
1. Open the OSD menu and go to the SYSTEM SETUP: Advanced > Security Settings 
menu. Press MODE/ENTER. The Security Settings page displays.
2. Highlight Change Security Settings and press MODE/ENTER.
3. Highlight Power on Lock and select On by pressing  / .
4. As pictured to the right, the four arrow keys ( , 
,  ,  ) respectively represent 4 digits (1, 2, 
3, 4). According to the password you desire to set, 
press the arrow keys to enter six digits for the 
password.
5. Confirm the new password by re-entering the 
new password.
Once the password is set, the OSD menu returns 
to the Security Settings page.
IMPORTANT: The digits being input will display as asterisks on-screen. Write your selected 
password down here in this manual in advance or right after the password is entered so that it 
is available to you should you ever forget it.
Password: __ __ __ __ __ __
Keep this manual in a safe place.
6. To leave the OSD menu, press MENU/EXIT.
If you forget the password
If the password function is activated, you will be asked 
to enter the six-digit password every time you turn on 
the projector. If you enter the wrong password, the 
password error message as pictured to the right displays 
lasting for three seconds, and the message INPUT 
PASSWORD follows. You can retry by entering another  
						

							Operation 35 six-digit password, or if you did not record the password in this manual, and you absolutely 
do not remember it, you can use the password recall procedure. See Entering the password 
recall procedure on page 35 for details.
If you enter an incorrect password 5 times in succession, the projector will automatically 
shut down in a short time.
Entering the password recall procedure
1. Press and hold AUTO on the projector or remote 
control for 3 seconds. The projector will display a 
coded number on the screen.
2. Write down the number and turn off your 
projector.
3. Seek help from the local BenQ service center to 
decode the number. You may be required to 
provide proof of purchase documentation to 
verify that you are an authorized user of the 
projector.
Changing the password
1. Open the OSD menu and go to the SYSTEM SETUP: Advanced > Security Settings > 
Change password menu.
2. Press MODE/ENTER. The message INPUT CURRENT PASSWORD displays.
3. Enter the old password.
• If the password is correct, another message INPUT NEW PASSWORD displays. 
• If the password is incorrect, the password error message displays lasting for three 
seconds, and the message INPUT CURRENT PASSWORD displays for your retr y. 
Yo u  c a n  p r e s s  MENU/EXIT to cancel the change or try another password.
4. Enter a new password.
IMPORTANT: The digits being input will display as asterisks on-screen. Write your selected 
password down here in this manual in advance or right after the password is entered so that it 
is available to you should you ever forget it.
Password: __ __ __ __ __ __
Keep this manual in a safe place.
5. Confirm the new password by re-entering the new password.
6. You have successfully assigned a new password to 
the projector. Remember to enter the new 
password next time the projector is started.
7. To leave the OSD menu, press MENU/EXIT.
Disabling the password function
To disable password protection, go back to the SYSTEM SETUP: Advanced > Security 
Settings > Change Security Settings > Power on Lock menu after opening the OSD menu 
system. Select Off by pressing  /. The message INPUT PASSWORD displays. Enter the 
current password.  
						

							Operation 36•If the password is correct, the OSD menu returns to the Security Settings page with 
Off shown in the row of Power on Lock. You will not have to enter the password 
next time you turn on the projector.
• If the password is incorrect, the password error message displays lasting for three 
seconds, and the message INPUT PASSWORD displays for your retry. You can 
press MENU/EXIT to cancel the change or try another password.
Though the password function is disabled, you need to keep the old password in hand should 
you ever need to re-activate the password function by entering the old password.
Switching input signal
The projector can be connected to multiple devices at the same time. However, it can only 
display one full screen at a time. When starting up, the projector automatically searches for 
the available signals.
Be sure the Quick Auto Search function in the SOURCE menu is On (which is the default of 
this projector) if you want the projector to automatically search for the signals.
You can also manually cycle through the available 
input signals.
1. Press SOURCE on the projector or remote 
control. A source selection bar displays. 
2. Press  /  until your desired signal is 
selected and press MODE/ENTER.
Once detected, the selected source information 
will display on the screen for seconds. If there 
is multiple equipment connected to the 
projector, repeat steps 1-2 to search for another 
signal.
• The brightness level of the projected image will 
change accordingly when you switch between 
different input signals. Data (graphic) PC 
presentations using mostly static images are 
generally brighter than Video using mostly 
moving images (movies).
• The input signal type effects the options available 
for the Picture Mode. See Selecting a picture 
mode on page 39 for details.
• The native display resolution of MX750 is in a 4:3 aspect ratio while the native display 
resolution of MP780 ST is in a 16:10 aspect ratio. For best display picture results, you 
should select and use an input signal which outputs at this resolution. Any other 
resolutions will be scaled by the projector depending upon the aspect ratio setting, which 
may cause some image distortion or loss of picture clarity. See Selecting the aspect 
ratio on page 37 for details.
Changing Color Space
In the unlikely event that you connect the projector to a DVD player via the projectors 
HDMI input and the projected picture displays wrong colors, please change the color space 
to YUV.
1. Press MENU/EXIT and then press   / until the SOURCE menu is highlighted.
2. Press   to highlight Color Space Conversion and press  /  to select a suitable 
color space.
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							Operation 37
This function is only available when the HDMI input port is in use.
Magnifying and searching for details
If you need to find the details on the projected picture, magnify the picture. Use the 
direction arrow keys for navigating the picture.
• Using the remote control
1. Press ZOOM+/ZOOM- to display the Zoom 
bar.
2. Press ZOOM + to magnify the center of the 
picture. Press the key repeatedly until the 
picture size is suitable for your need.
3. Use the directional arrows ( ,  ,  ,  ) on 
the projector or remote control to navigate the 
picture.
4. To restore the picture to its original size, press 
AUTO. You can also press ZOOM -. When the key is pressed again, the picture is 
further reduced until it is restored to the original size.
• Using the OSD menu
1. Press MENU/EXIT and then press  /  until the DISPLAY menu is highlighted.
2. Press
  to highlight Digital Zoom and press MODE/ENTER. The Zoom bar displays.
3. Repeat steps 2-4 in the section of Using the remote control above. Or if you are using 
the projector control panel, continue to the following steps.
4. Press   on the projector repeatedly to magnify the picture to a desired size.
5. To navigate the picture, press MODE/ENTER to switch to the paning mode and press 
the directional arrows ( ,  ,  ,  ) to navigate the picture.
6. Use the directional arrows ( ,  ,  ,  ) on the projector or remote control to 
navigate the picture.
7. To reduce size of the picture, press MODE/ENTER to switch back to the zoom in/out 
functionality, and press AUTO to restore the picture to its original size. You can also 
press   repeatedly until it is restored to the original size.
The picture can only be navigated after the picture is magnified. You can further magnify the 
picture while searching for details.
Selecting the aspect ratio
The aspect ratio is the ratio of the image width to the image height. Most analog TV and 
computers are in 4:3 ratio, which is the default for MX750.
With the advent of digital signal processing, digital display devices like this projector can 
dynamically stretch and scale the image output to a different aspect than that of the image 
input signal. 
To change the projected image ratio (no matter what aspect the source is): 
						

							
Operation
38 • Using the remote control
1. Press 
ASPECT to show the current setting.
2. Press  ASPECT repeatedly to select an aspect 
ratio to suit the format of the video signal and 
your display requirements.
• Using the OSD menu
1. Press  MENU/EXIT  and then press  /  
until the  DISPLAY  menu is highlighted.
2. Press
  to highlight  Aspect Ratio.
3. Press  /  to select an aspect ratio to suit the format of the video signal and your  display requirements.
About the aspect ratio
In the pictures below, the black portions are inactive areas and the white portions are active 
areas. OSD menus can be displayed on those unused black areas.
1.Auto: Scales an image proportionally to fit the 
projectors native resolution in its horizontal or 
vertical width. This is suitable for the incoming 
image which is neither in 4:3 nor 16:9 and you want 
to make most use of the screen without altering the 
images aspect ratio.
2.
Real : The image is projected as its original 
resolution, and resized to fit within the display area. 
For input signals with lower resolutions, the 
projected image will display smaller than if resized 
to full screen. You could adjust the zoom setting or 
move the projector towards the screen to increase 
the image size if necessary. You may also need to 
refocus the projector after making these 
adjustments.
3. 4:3: Scales an image so that it is displayed in the 
center of the screen with a 4:3 aspect ratio. This is 
most suitable for 4:3 images like computer 
monitors, standard definition TV and 4:3 aspect 
DVD movies, as it displays them without aspect 
alteration.
4. 16:9: Scales an image so that  it is displayed in the 
center of the screen with a 16:9 aspect ratio. This is 
most suitable for images which are already in a 16:9 
aspect, like high definition TV, as it displays them 
without aspect alteration.
5. 16:10: Scales an image so that  it is displayed in the 
center of the screen with a 16:10 aspect ratio. This is 
16:10 picture
16:9 picture
4:3 picture
16:9 picture
4:3 picture
16:9 picture
16:10 picture 
						

							Operation 39 most suitable for images which are already in a 16:10 aspect, like high definition TV, as 
it displays them with out aspect alteration.
Optimizing the image
Selecting a picture mode
The projector is preset with several predefined 
picture modes so that you can choose one to suit 
your operating environment and input signal 
picture type.
To select an operation mode that suits your need, 
you can follow one of the following steps.
•Press MODE/ENTER on the remote control or 
projector repeatedly until your desired mode is selected.
•Go to the PICTURE > Picture Mode menu and press  /  to select a desired mode.
The picture modes are listed below.
1.Dynamic mode: Maximizes the brightness of the projected image. This mode is 
suitable for environments where extra-high brightness is required, such as using the 
projector in well lit rooms.
2.Presentation mode (Default): Is designed for presentations. The brightness is 
emphasized in this mode.
3.sRGB mode: Maximizes the purity of RGB colors to provide true-to-life images 
regardless of brightness setting. It is most suitable for viewing photos taken with an 
sRGB compatible and properly calibrated camera, and for viewing PC graphic and 
drawing applications such as AutoCAD.
4.Cinema mode: Is appropriate for playing colorful movies, video clips from digital 
cameras or DVs through the PC input for best viewing in a blackened (little light) 
environment.
5.User 1/User 2 mode: Recalls the settings customized based on the current available 
picture modes. See Setting the User 1/User 2 mode on page 39 for details.
Picture mode is fixed in Presentation mode when PointDrawTM function is on (MP780 ST only).
Setting the User 1/User 2 mode
There are two user-definable modes if the current available picture modes are not suitable 
for your need. You can use one of the picture modes (except the User 1/User 2) as a starting 
point and customize the settings.
1. Press MENU/EXIT to open the On-Screen Display (OSD) menu.
2. Go to the PICTURE > Picture Mode menu.
3. Press  /  to select User 1 to User 2.
4. Press  to highlight Reference Mode.
This function is only available when User 1 or User 2 mode is selected up in the Picture Mode 
sub-menu item.
5. Press  /  to select a picture mode that is closest to your need.
6. Press  to select a sub-menu item to be changed and adjust the value with  / . 
See Fine-tuning the image quality in user modes below for details.
#- / ,/, 
						

							Operation 407. When all settings have been done, highlight Save Settings and press MODE/ENTER to 
store the settings.
8. The confirmation message Setting Saved displays.
Using Wall Color
In the situation where you are projecting onto a colored surface such as a painted wall which 
may not be white, the Wall Color feature can help correct the projected picture’s color to 
prevent possible color difference between the source and projected pictures.
To use this function, go to the DISPLAY > Wall Color menu and press  /  to select a 
color which is the closest to the color of the projection surface. There are several 
precalibrated colors to choose from: Light Yellow, Pink, Light Green, Blue, and Blackboard.
Fine-tuning the image quality in user modes
According to the detected signal type, there are some user-definable functions available 
when User 1 or User 2 mode is selected. Based on your needs, you can make adjustments 
tothese functions by highlighting them and pressing  /  on the projector or remote 
control
Adjusting Brightness
The higher the value, the brighter the image. And the 
lower the setting, the darker the image. Adjust this 
control so the black areas of the image appear just as 
black and that detail in the dark areas is visible.
Adjusting Contrast
The higher the value, the greater the contrast. Use this 
to set the peak white level after you have previously 
adjusted the Brightness setting to suit your selected 
input and viewing environment.
Adjusting Color
Lower setting produces less saturated colors. If the setting is too high, colors on the image 
will be overpowering, which makes the image unrealistic.
Adjusting Tint
The higher the value, the more reddish the picture becomes. The lower the value, the more 
greenish the picture becomes.
Adjusting Sharpness
The higher the value, the sharper the picture becomes. The lower the value, the softer the 
picture becomes.
Adjusting Brilliant Color
This feature utilizes a new color-processing algorithm and system level enhancements to 
enable higher brightness while providing truer, more vibrant colors in picture. It enables a 
greater than 50% brightness increase in mid-tone images, which are common in video and 
natural scenes, so the projector reproduces images in realistic and true colors. If you prefer 
images with that quality, select On. If you don’t need it, select Off.
On is the default and recommended selection for this projector. When Off is selected, the 
Color Temperature function is not available.
Selecting a Color Temperature
+50+30+70
0+30-30