BenQ Projector MH741 User Manual

							Connection21
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.  
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 
1. HDMI cable
2. Audio cable
3. S-Video cable
4. Video cable
5. Audio L/R cable6. VGA cable
7. VGA to DVI-A cable
8. USB cable
9. Microphone
10. Type-A port power 1.5A
11. HDMI-Micro USB cable
123456786229
10
11
1
Notebook or desktop 
computer A/V device
Speakers Monitor
(VGA) (DVI)orMicrophone
Smartphone or 
tablet or 
						

							Connection 22
FN and the labeled function key simultaneously. Refer to your notebooks documentation to find 
your notebooks key combination.
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 one built-in mono speaker 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.
The built-in speaker 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 22 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.
Te r m i n a l  n a m eTerminal appearancePicture quality
HDMI Best
Component Video Better
S-Video Good
Video Normal 
						

							Connection23
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 PC Component/
S Video/VideoHDMI-1/
HDMI-2/MHL
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 
PC signal, the projector can play the sound received from AUDIO IN mini jack. If you select the 
S-VIDEO/VIDEO signal, the projector can play the sound received from AUDIO (L/R). 
						

							Operation 24
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 42 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 six digit 
password. See Utilizing the password 
function on page 29 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 32 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 67 for details.
To maintain the lamp life, once you turn the projector on, wait at least 5 minutes before turning 
if off. 
						

							Operation25
Adjusting the projected image
Adjusting the projection angle
The projector is equipped with 1 front adjuster foot and 1 rear adjuster foot. These 
adjusters change the image height and projection angle. To adjust the projector:
1. Screw the front adjuster foot. Once the image 
is positioned where you want it. 
2. Screw the rear adjuster foot to fine tune the 
horizontal angle.
To retract the foot. Screw the front and 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 2D Keystone on page 26 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.
Fine-tuning the image size and clarity 
1
2
1. Adjust the projected image to the 
size that you need using the ZOOM 
ring.2. Sharpen the image by rotating the 
FOCUS ring. 
						

							Operation 26
Correcting 2D Keystone
2D Keystone function enables a wider projector installation area compared to 
conventional projectors with limited positioning in front of the screen.
To correct this, you will need to manually correct it following one of these steps.
• Using the projector or remote control 
Press  /  on the projector or remote 
control to display the 2D Keystone  page. Press ▲/▼ to adjust 
vertical values from -30 to 30. Press ◄/► to adjust horizontal 
values from -30 to 30. 
•Using the OSD menu 
1. Press MENU/EXIT and then press ◄/► until 
the 
Display menu is highlighted.
2. Press ▼ to highlight 2D Keystone and press 
MODE/ENTER. The 2D Keystone page 
displays.
3. Press ▲, ▼, ◄, ► to adjust the keystone 
values.
•Using the QUICK INSTALL key 
1. Press QUICK INSTALL on the remote control.
2. Press ▼ to highlight 2D Keystone and press 
MODE/ENTER. The 2D Keystone page 
displays. 
3. Press ▲, ▼, ◄, ► to adjust the keystone 
values. 
						

							Operation27
Correcting Corner Fit
Manually adjust four corners of the image by setting the horizontal and vertical values.
•Using the OSD menu
1. Press MENU/EXIT and then press ◄/► until 
the 
Display menu is highlighted. 
2. Press ▼ to highlight Corner Fit and press 
MODE/ENTER. The Corner Fit  page 
displays.
3. Press ▲, ▼, ◄, ► to select one of the four 
corners and press MODE/ENTER. 
4. Press ▲/▼ to adjust vertical values from 0 to 
60. 
5. Press ◄/► to adjust horizontal values from 0 
to 60. 
						

							Operation 28
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-menuHighlight
Press MENU/
EXIT to the 
previous page 
or to exit.Status 
						

							Operation29
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 a Kensington lock, to secure the 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 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. 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.
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.
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. 
						

							Operation 30
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 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 30 
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.
Password Error
Please Try again.
Please write down the recall code, 
and contact BenQ 
Customer Center.
Recall code:
12345678
RECALL PASSWORD
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