BenQ Projector MX810ST/MW811ST/MX812ST User Manual

Connection 21
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.
You can also use a microphone to output the sound through the projector speaker.
Once connected, the audio can...

Connection 22•  You might get feedback noise from the microphone when you are too close to the 
speaker of the projector. Move the microphone away from the speaker of the projector. 
The greater volume you require, the greater distance you need to be away from the 
speaker to prevent the noise. 

Operation 23
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 on the projector or   ON on the remote control to start the 
projector. As soon as the lamp...

Operation 24
Adjusting the projected image
Adjusting the projection angle
The projector is equipped with 1 quick-release adjuster foot and 2 rear adjuster feet. 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 feet to fine-tune the 
horizontal angle.
To...

Operation 25
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, if you want the projector to 
automatically correct image keystoning, be sure the Auto Keystone function in the DISPLAY 
menu is On.
Or you will need to manually correct it following ONE of these steps.
•  Using the remote control...

Operation 26
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...

Operation 27
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.
A Kensington security cable lock is usually a combination of key(s) and the lock. Refer to the 
lock’s documentation for finding out how to use it.
Utilizing the password function
For security purposes and to help...

Operation 28
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 is 
displayed lasting for 3 seconds, and the INPUT 
PASSWORD message 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...

Operation 29
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” is displayed. Enter the current 
password. 
i. If the password is correct, the OSD menu returns to the Security Settings page.
Press  to highlight Power On Lock and press  /  to select Off. You will not 
have to enter the password next time when turning on...

Operation 30
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 if you want the 
projector to automatically search for the signals.
To select the source:
•  Using the remote control or projector
Press one of the Source buttons on the remote control, 
or press...