BenQ Projector MU686 User Manual

Operation 21
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 Ring Tone will be...

Operation 22
Adjusting the projected image
Adjusting the projection angle
The projector is equipped with a quick-release 
adjuster foot and 2 rear adjuster feet. These 
adjusters change the image height and projection 
angle.
To adjust the projection angle:
1. Press the quick-release button and lift the 
front of the projector. Once the image is 
positioned as desired, 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 23
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. 
You can correct this automatically following these steps:
1. Press MENU and then press  /  until the DISPLAY menu is highlighted.
2. Press  to highlight Auto Keystone and press  /  to select On.
To manually correct this, you will need to 
follow these steps:
1. Do one of the following steps to...

Operation 243. Press  /  to adjust vertical values.
4. Press  /  to adjust horizontal values.
Corner Fit
Back
Enter 

Operation 25
Using the menus
The projector is equipped with On-Screen Display (OSD) menus for making various 
adjustments and settings.
The OSD screenshots below are for reference only, and may differ from the actual design.
Below is the overview of the OSD menu.
The following example describes how to set the OSD language.
1. Press MENU on the projector or remote 
control to turn the OSD menu on.3. Press  to highlight Language 
and press OK. 
2. Use  /  to highlight the SYSTEM 
SETUP: Basic menu.4. Press...

Operation 26
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 25 on page 9 for details.
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...

Operation 27 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...

Operation 28ii. If the password is incorrect, the password error message will appear, and the 
message “INPUT PASSWORD” appears for your retry. You can press 
BACK 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...

Operation 29
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.
1. Press MENU and then press  /  until the DISPLAY menu is highlighted.
2. Press
  to highlight Digital Zoom and press OK. The Zoom bar appears.
3. Press   repeatedly to magnify the picture to a desired size.
4. To navigate the picture, press OK to switch to the panning mode and press the 
directional arrows ( ,  ,  ,  )...

Operation 30
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...