BenQ Mh740 Digital Projector User Manual

							Connection21
Playing sound through the projector
You can make use of the projector (mixed mono) speaker 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.
Once connected, the audio can be controlled by the projector On-Screen Display (OSD) 
menus.
The table below describes the connection methods for different devices, and where the 
sound is from.
Device Computer/PC Component/
S Video/VideoHDMI 1/2
Audio input port AUDIO IN (mini jack) AUDIO (L/R) HDMI
The projector can play the 
sound from...AUDIO IN (mini jack) AUDIO (L/R) HDMI
Audio output port AUDIO OUT AUDIO OUT AUDIO OUT
The selected input signal determines which sound will be played by the projector speaker, and 
which sound will be output from the projector when AUDIO OUT is connected. If you select the 
COMPUTER/PC signal, the projector can play the sound received from AUDIO IN mini jack. If you 
select the COMPONENT/VIDEO signal, the projector can play the sound received from AUDIO 
(L/R). 
						

							Operation 22
Operation
Starting up the projector
1. Remove the lens cap.
2. Plug the power cord into the projector and into a 
wall socket. Turn on the wall socket 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 cable) only with the 
device to avoid possible dangers such as electric shock and fire.
3. Press POWER on the projector   or remote 
control   to start the projector and a start up tone sounds. 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 39 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. 
4. To use the OSD menus, please set them to 
your familiar language first.
5. If you are prompted for a password, press the 
arrow keys to enter a five digit password. See 
Utilizing the password function on page 26 
for details.
6. Switch all of the connected equipment on.
7. 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 29 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 blank 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 63 for details.
To maintain the lamp life, once you turn the projector on, wait at least 5 minutes before turning if off.
Please select language
Press Enter to confirm, Exit to leave 
						

							Operation23
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 24 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 current source information will be displayed in the upper left corner of the screen for 
3 seconds. 
• The screen will be blank while AUTO is functioning.
• This function is only available when PC signal (analog RGB) is selected.
PUSH1
2 
						

							Operation 24
Fine-tuning the image size and clarity
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 can use Auto Keystone or 
Keystone 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. 1. Adjust the projected image to the 
size that you need using the ZOOM 
ring.2. Sharpen the image by rotating the 
FOCUS ring.
Press /.Press /. 
						

							Operation25
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.
To use the OSD menus, please set them to your familiar language first.
1. Press MODE/ENTER 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 MODE/ENTER 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
Wall Color
Aspect Ratio
Keystone
Phase
H. Size
Digital Zoom
3DOff
15
0
ENTER
MENU
Exit
S-VIDEOPositionAuto
DISPLAY
Teaching Template
DisplayWall Color
Aspect Ratio
Position
Phase
H. Size
Digital ZoomAuto
MENUExit
Keystone
15
0
S-VIDEO3DOff
Teaching TemplateENTER
System Setup: BasicPresentation Timer
Language
Menu Settings
Operation Settings
Remote Receiver
Panel Key LockFront+Rear
MENUExit
Projector Position
S-VIDEOBackground ColorFront Table
Splash ScreenBlueOff
BenQ
System Setup: BasicPresentation Timer
Language
Menu Settings
Operation Settings
Remote Receiver
Panel Key LockFront+Rear
MENUExit
Projector Position
S-VIDEOBackground ColorFront Table
Splash ScreenBlueOff
BenQ 
						

							Operation
26
Securing the projector
Using a security cable lock
The projector has to be installed in a safe pl ace to prevent theft. Otherwise, purchase a 
lock, such as a Kensington lock, to secure th e projector. You can locate a Kensington lock 
slot on the left side of the projector. See  Kensington anti-theft lock slot on page 9  for 
details. 
A Kensington security cable lock is usually a  combination of key(s) and a lock. Refer to the 
lock’s documentation for finding out how to use it.
Utilizing the password function
For security purposes and to help prevent una uthorized 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. 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 five 
digits for the password.
4. Confirm the new password by re-entering the  new password.
Once the password is set, the OSD menu 
returns to the  Security Settings  page.
5. To activate the  Power on Lock function, press 
▲ /▼  to highlight  Power on Lock  and press ◄/►  to select  On.
6. To activate the We b  C o n t r o l  L o c k  function, press ▲/▼  to highlight  We b  
Control Lock  and press ◄/►  to select  On.
When the  Web Control Lock  is activated, you have to enter the correct password 
to change projector settings via  the Projector Network Display System
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.
7. To leave the OSD menu, press  MENU/EXIT.
INPUT PASSWORD
BackMENU 
						

							Operation27
If you forget the password
If the password function is activated, you will be asked 
to enter the five-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 five-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 27 
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 retry. You can press MENU/EXIT to cancel the change or try another 
password.
4. Enter a new password.
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.
Password Error
Please Try again.
Please write down the recall code, 
and contact BenQ 
Customer Center.
Recall code:
12345678
RECALL PASSWORD
BackMENU 
						

							Operation 28
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 menu after opening the OSD menu system. Press 
MODE/ENTER. The message INPUT PASSWORD appears. Enter the current 
password. 
i. If the password is correct, the OSD menu returns to the Security Settings. 
Press ▼ highlight Pow e r  O n  L o c k and press ◄/► to select Off. You will not 
have to enter the password next time you turn on the projector.
Press ▼ to highlight We b  C o n t r o l  L o c k and press ◄/► to select Off. The 
Web Control Lock function is released and the projector settings can be 
change via the Projector Network System.
ii. 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.
Password Changed 
						

							Operation29
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. 
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 press input source directly from the 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).
• 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 30 for 
details.
Changing Color Space
In the unlikely event that you connect the projector to a DVD player via the projector’s
HDMI input and the projected picture displays wrong colors, please change the color 
space.
To  d o  t h i s :
1. Press MENU/EXIT and then press ◄/► until the SOURCE menu is highlighted.
2. Press ▼ to highlight Color Space Conversion and press ◄/► to select the 
setting.
This function is only available when the HDMI input socket is in use. 
						

							Operation 30
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 Digital Zoom+/- to display the Zoom bar. Press Digital Zoom+ to magnify 
the center of the picture. Press the key repeatedly until the picture size is suitable for 
your need.
2. Use the directional arrows (▲, ▼, ◄, ►) on the projector or remote control to 
navigate the picture.
3. To restore the picture to its original size, press AUTO. You can also press Digital 
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. Press ▼ on the projector repeatedly to magnify the picture to a desired size.
4. To navigate the picture, press MODE/ENTER to switch to the paning mode and 
press the directional arrows (▲, ▼, ◄, ►) to navigate the picture.
5. 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, and digital TV and DVDs are usually in 16:9 ratio.
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):
• 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.